SemaInit.cpp revision 3c394c54511b27be0ff6968f159bba3521ab3c3e
10cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===--- SemaInit.cpp - Semantic Analysis for Initializers ----------------===// 20cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 30cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// The LLVM Compiler Infrastructure 40cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 50cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// This file is distributed under the University of Illinois Open Source 60cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// License. See LICENSE.TXT for details. 70cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 80cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===----------------------------------------------------------------------===// 90cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 105d3d41d0873d51b405972baf38e1f3a7ef5b49e0Sebastian Redl// This file implements semantic analysis for initializers. 11dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// 120cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===----------------------------------------------------------------------===// 130cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1419510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/Designator.h" 15e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Initialization.h" 16e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Lookup.h" 172d88708cbe4e4ec5e04e4acb6bd7f5be68557379John McCall#include "clang/Sema/SemaInternal.h" 181e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner#include "clang/Lex/Preprocessor.h" 190cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff#include "clang/AST/ASTContext.h" 207cd088e519d7e6caa4c4c12db52e0e4ae35d25c2John McCall#include "clang/AST/DeclObjC.h" 212078bb9c9336da56ea521e98e718556b227541f6Anders Carlsson#include "clang/AST/ExprCXX.h" 2279e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner#include "clang/AST/ExprObjC.h" 23d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor#include "clang/AST/TypeLoc.h" 242b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl#include "llvm/ADT/APInt.h" 258fe83e1df954d72c0f4ffc15d20a5222ec151c21Benjamin Kramer#include "llvm/ADT/SmallString.h" 2620093b4bf698f292c664676987541d5103b65b15Douglas Gregor#include "llvm/Support/ErrorHandling.h" 27191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin#include "llvm/Support/raw_ostream.h" 28c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor#include <map> 2905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorusing namespace clang; 300cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 31dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 32dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Sema Initialization Checking 33dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 34dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 35ce6c9b7da219c8640a0559f75770cfc6622de083John McCallstatic Expr *IsStringInit(Expr *Init, const ArrayType *AT, 36ce6c9b7da219c8640a0559f75770cfc6622de083John McCall ASTContext &Context) { 378718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman if (!isa<ConstantArrayType>(AT) && !isa<IncompleteArrayType>(AT)) 388718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman return 0; 398718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman 408879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // See if this is a string literal or @encode. 418879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner Init = Init->IgnoreParens(); 421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 438879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Handle @encode, which is a narrow string. 448879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (isa<ObjCEncodeExpr>(Init) && AT->getElementType()->isCharType()) 458879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner return Init; 468879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 478879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Otherwise we can only handle string literals. 488879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner StringLiteral *SL = dyn_cast<StringLiteral>(Init); 49220b6369d7717bfe6894b46cef055d3e763827f2Chris Lattner if (SL == 0) return 0; 50bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman 51bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman QualType ElemTy = Context.getCanonicalType(AT->getElementType()); 525cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor 535cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor switch (SL->getKind()) { 545cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::Ascii: 555cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::UTF8: 565cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // char array can be initialized with a narrow string. 575cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // Only allow char x[] = "foo"; not char x[] = L"foo"; 58bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman return ElemTy->isCharType() ? Init : 0; 595cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::UTF16: 605cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return ElemTy->isChar16Type() ? Init : 0; 615cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::UTF32: 625cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return ElemTy->isChar32Type() ? Init : 0; 635cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::Wide: 645cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // wchar_t array can be initialized with a wide string: C99 6.7.8p15 (with 655cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // correction from DR343): "An array with element type compatible with a 665cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // qualified or unqualified version of wchar_t may be initialized by a wide 675cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // string literal, optionally enclosed in braces." 685cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor if (Context.typesAreCompatible(Context.getWCharType(), 695cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor ElemTy.getUnqualifiedType())) 705cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return Init; 718879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 725cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return 0; 735cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor } 741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 755cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor llvm_unreachable("missed a StringLiteral kind?"); 76dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 77dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 78ce6c9b7da219c8640a0559f75770cfc6622de083John McCallstatic Expr *IsStringInit(Expr *init, QualType declType, ASTContext &Context) { 79ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = Context.getAsArrayType(declType); 80ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (!arrayType) return 0; 81ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 82ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return IsStringInit(init, arrayType, Context); 83ce6c9b7da219c8640a0559f75770cfc6622de083John McCall} 84ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 85fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCallstatic void CheckStringInit(Expr *Str, QualType &DeclT, const ArrayType *AT, 86fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall Sema &S) { 8779e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner // Get the length of the string as parsed. 8879e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner uint64_t StrLength = 8979e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner cast<ConstantArrayType>(Str->getType())->getSize().getZExtValue(); 9079e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner 911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 92dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner if (const IncompleteArrayType *IAT = dyn_cast<IncompleteArrayType>(AT)) { 931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // C99 6.7.8p14. We have an array of character type with unknown size 94dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // being initialized to a string literal. 95dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner llvm::APSInt ConstVal(32); 9619da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner ConstVal = StrLength; 97dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // Return a new array type (C99 6.7.8p22). 9846a617a792bfab0d9b1e057371ea3b9540802226John McCall DeclT = S.Context.getConstantArrayType(IAT->getElementType(), 9946a617a792bfab0d9b1e057371ea3b9540802226John McCall ConstVal, 10046a617a792bfab0d9b1e057371ea3b9540802226John McCall ArrayType::Normal, 0); 10119da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner return; 102dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner } 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1048718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman const ConstantArrayType *CAT = cast<ConstantArrayType>(AT); 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 106bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // We have an array of character type with known size. However, 1078718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // the size may be smaller or larger than the string we are initializing. 1088718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // FIXME: Avoid truncation for 64-bit length strings. 1094e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus) { 110b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (StringLiteral *SL = dyn_cast<StringLiteral>(Str)) { 111b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // For Pascal strings it's OK to strip off the terminating null character, 112b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // so the example below is valid: 113b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // 114b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // unsigned char a[2] = "\pa"; 115b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (SL->isPascal()) 116b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson StrLength--; 117b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson } 118b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson 119bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // [dcl.init.string]p2 120bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength > CAT->getSize().getZExtValue()) 12196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar S.Diag(Str->getLocStart(), 122bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::err_initializer_string_for_char_array_too_long) 123bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 124bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } else { 125bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // C99 6.7.8p14. 126bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength-1 > CAT->getSize().getZExtValue()) 12796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar S.Diag(Str->getLocStart(), 128bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::warn_initializer_string_for_char_array_too_long) 129bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 130bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } 1311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1328718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // Set the type to the actual size that we are initializing. If we have 1338718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // something like: 1348718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // char x[1] = "foo"; 1358718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // then this will set the string literal's type to char[1]. 1368718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman Str->setType(DeclT); 137dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 138dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 139dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 140dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Semantic checking for initializer lists. 141dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 142dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 1439e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// @brief Semantic checking for initializer lists. 1449e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1459e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// The InitListChecker class contains a set of routines that each 1469e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// handle the initialization of a certain kind of entity, e.g., 1479e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// arrays, vectors, struct/union types, scalars, etc. The 1489e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// InitListChecker itself performs a recursive walk of the subobject 1499e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure of the type to be initialized, while stepping through 1509e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// the initializer list one element at a time. The IList and Index 1519e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// parameters to each of the Check* routines contain the active 1529e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// (syntactic) initializer list and the index into that initializer 1539e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list that represents the current initializer. Each routine is 1549e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// responsible for moving that Index forward as it consumes elements. 1559e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1569e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// Each Check* routine also has a StructuredList/StructuredIndex 15763e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// arguments, which contains the current "structured" (semantic) 1589e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initializer list and the index into that initializer list where we 1599e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// are copying initializers as we map them over to the semantic 1609e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. Once we have completed our recursive walk of the subobject 1619e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure, we will have constructed a full semantic initializer 1629e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. 1639e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1649e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// C99 designators cause changes in the initializer list traversal, 1659e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// because they make the initialization "jump" into a specific 1669e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// subobject and then continue the initialization from that 1679e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// point. CheckDesignatedInitializer() recursively steps into the 1689e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// designated subobject and manages backing out the recursion to 1699e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initialize the subobjects after the one designated. 1708b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattnernamespace { 171c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorclass InitListChecker { 1720820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner Sema &SemaRef; 173c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool hadError; 17414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool VerifyOnly; // no diagnostics, no structure building 175c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool AllowBraceElision; 176a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer llvm::DenseMap<InitListExpr *, InitListExpr *> SyntacticToSemantic; 177c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *FullyStructuredList; 1781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1798ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckImplicitInitList(const InitializedEntity &Entity, 180987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, QualType T, 1819e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 182629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman unsigned &StructuredIndex); 1838ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckExplicitInitList(const InitializedEntity &Entity, 18446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 1859e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 186eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 187eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckListElementTypes(const InitializedEntity &Entity, 18946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &DeclType, 1901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 191c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1929e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 193eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 194eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1958ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckSubElementType(const InitializedEntity &Entity, 19646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType ElemType, 197c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1989e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1999e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2000c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman void CheckComplexType(const InitializedEntity &Entity, 2010c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 2020c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 2030c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 2040c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex); 2058ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckScalarType(const InitializedEntity &Entity, 20646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 207c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 2089e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2099e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2108ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckReferenceType(const InitializedEntity &Entity, 2118ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 212930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 213930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 214930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex); 2158ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckVectorType(const InitializedEntity &Entity, 21646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, unsigned &Index, 2179e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2189e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2198ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckStructUnionTypes(const InitializedEntity &Entity, 2202bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, QualType DeclType, 2211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator Field, 222c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2239e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 224eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 225eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 2268ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckArrayType(const InitializedEntity &Entity, 227784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 2281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::APSInt elementIndex, 229c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2309e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2319e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2328ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson bool CheckDesignatedInitializer(const InitializedEntity &Entity, 2339a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, DesignatedInitExpr *DIE, 234711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 2351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &CurrentObjectType, 236c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor RecordDecl::field_iterator *NextField, 237c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor llvm::APSInt *NextElementIndex, 238c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 239c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 240c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &StructuredIndex, 241eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 242eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject); 243c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 244c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor QualType CurrentObjectType, 245c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 246c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned StructuredIndex, 247c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor SourceRange InitRange); 2489e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor void UpdateStructuredListElement(InitListExpr *StructuredList, 2499e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex, 250c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor Expr *expr); 251c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numArrayElements(QualType DeclType); 252c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numStructUnionElements(QualType DeclType); 253930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 254d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor void FillInValueInitForField(unsigned Init, FieldDecl *Field, 255d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 256d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 257cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor void FillInValueInitializations(const InitializedEntity &Entity, 258cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 259f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool CheckFlexibleArrayInit(const InitializedEntity &Entity, 260f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, FieldDecl *Field, 261f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject); 2623ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl void CheckValueInitializable(const InitializedEntity &Entity); 2633ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 264c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorpublic: 265cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker(Sema &S, const InitializedEntity &Entity, 266c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl InitListExpr *IL, QualType &T, bool VerifyOnly, 267c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool AllowBraceElision); 268c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool HadError() { return hadError; } 269c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 270c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // @brief Retrieves the fully-structured initializer list used for 271c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // semantic analysis and code generation. 272c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getFullyStructuredList() const { return FullyStructuredList; } 273c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor}; 2748b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattner} // end anonymous namespace 27568355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 2763ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redlvoid InitListChecker::CheckValueInitializable(const InitializedEntity &Entity) { 2773ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl assert(VerifyOnly && 2783ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl "CheckValueInitializable is only inteded for verification mode."); 2793ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 2803ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SourceLocation Loc; 2813ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 2823ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl true); 2833ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializationSequence InitSeq(SemaRef, Entity, Kind, 0, 0); 2843ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (InitSeq.Failed()) 2853ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 2863ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl} 2873ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 288d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregorvoid InitListChecker::FillInValueInitForField(unsigned Init, FieldDecl *Field, 289d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 290dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitListExpr *ILE, 291d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor bool &RequiresSecondPass) { 29296a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = ILE->getLocStart(); 293d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned NumInits = ILE->getNumInits(); 294dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity MemberEntity 295d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = InitializedEntity::InitializeMember(Field, &ParentEntity); 296d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 297d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // FIXME: We probably don't need to handle references 298d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // specially here, since value-initialization of references is 299d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // handled in InitializationSequence. 300d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->getType()->isReferenceType()) { 301d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // C++ [dcl.init.aggr]p9: 302d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // If an incomplete or empty initializer-list leaves a 303d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // member of reference type uninitialized, the program is 304d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // ill-formed. 305d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Loc, diag::err_init_reference_member_uninitialized) 306d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << Field->getType() 307d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << ILE->getSyntacticForm()->getSourceRange(); 308d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Field->getLocation(), 309d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor diag::note_uninit_reference_member); 310d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 311d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 312d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 313dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 314d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 315d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor true); 316d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationSequence InitSeq(SemaRef, MemberEntity, Kind, 0, 0); 317d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (!InitSeq) { 318d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitSeq.Diagnose(SemaRef, MemberEntity, Kind, 0, 0); 319d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 320d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 321d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 322dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 32360d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult MemberInit 324f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, MemberEntity, Kind, MultiExprArg()); 325d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (MemberInit.isInvalid()) { 326d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 327d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 328d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 329dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 330d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) { 331d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Do nothing 332d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (Init < NumInits) { 333d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->setInit(Init, MemberInit.takeAs<Expr>()); 3347491c499e826682e128a400038361ebcbde30eecSebastian Redl } else if (InitSeq.isConstructorInitialization()) { 335d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Value-initialization requires a constructor call, so 336d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // extend the initializer list to include the constructor 337d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // call and make a note that we'll need to take another pass 338d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // through the initializer list. 339709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek ILE->updateInit(SemaRef.Context, Init, MemberInit.takeAs<Expr>()); 340d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor RequiresSecondPass = true; 341d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 342d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitListExpr *InnerILE 343d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 344dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(MemberEntity, InnerILE, 345dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi RequiresSecondPass); 346d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor} 347d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 3484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Recursively replaces NULL values within the given initializer list 3494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// with expressions that perform value-initialization of the 3504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// appropriate type. 351dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 352cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::FillInValueInitializations(const InitializedEntity &Entity, 353cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, 354cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool &RequiresSecondPass) { 3551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((ILE->getType() != SemaRef.Context.VoidTy) && 356930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor "Should not have void type"); 35796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = ILE->getLocStart(); 35887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (ILE->getSyntacticForm()) 35996a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar Loc = ILE->getSyntacticForm()->getLocStart(); 3601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3616217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) { 362d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion() && 363d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->getInitializedFieldInUnion()) 364d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(0, ILE->getInitializedFieldInUnion(), 365d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Entity, ILE, RequiresSecondPass); 366d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor else { 367d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned Init = 0; 368d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor for (RecordDecl::field_iterator 369d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field = RType->getDecl()->field_begin(), 370d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FieldEnd = RType->getDecl()->field_end(); 371d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field != FieldEnd; ++Field) { 372d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->isUnnamedBitfield()) 373d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor continue; 374d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 375d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 37687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 37787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 378581deb3da481053c4993c7600f97acf7768caac5David Blaikie FillInValueInitForField(Init, *Field, Entity, ILE, RequiresSecondPass); 379d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 380cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 381cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 382d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ++Init; 383d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 384d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Only look at the first initialization of a union. 385d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion()) 386d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor break; 387d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 3884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 3894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 3911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType ElementType; 3941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 395cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializedEntity ElementEntity = Entity; 39687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumInits = ILE->getNumInits(); 39787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumElements = NumInits; 3980820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (const ArrayType *AType = SemaRef.Context.getAsArrayType(ILE->getType())) { 3994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = AType->getElementType(); 40087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) 40187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = CAType->getSize().getZExtValue(); 402dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 403cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 404183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = ILE->getType()->getAs<VectorType>()) { 4054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = VType->getElementType(); 40687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = VType->getNumElements(); 407dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 408cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 4091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else 4104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = ILE->getType(); 4111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 412dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 41387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor for (unsigned Init = 0; Init != NumElements; ++Init) { 41416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (hadError) 41516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return; 41616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor 417d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement || 418d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson ElementEntity.getKind() == InitializedEntity::EK_VectorElement) 419cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity.setElementIndex(Init); 420cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 42121f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis Expr *InitExpr = (Init < NumInits ? ILE->getInit(Init) : 0); 42221f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis if (!InitExpr && !ILE->hasArrayFiller()) { 423cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 424cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor true); 425cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationSequence InitSeq(SemaRef, ElementEntity, Kind, 0, 0); 426cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!InitSeq) { 427cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitSeq.Diagnose(SemaRef, ElementEntity, Kind, 0, 0); 42887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor hadError = true; 42987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 43087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 43187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 43260d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult ElementInit 433f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, ElementEntity, Kind, MultiExprArg()); 434cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (ElementInit.isInvalid()) { 43516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor hadError = true; 436cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 437cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 438cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 439cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (hadError) { 440cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // Do nothing 441cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } else if (Init < NumInits) { 4423e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4433e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // of the "holes" in the array. 4443e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) 4453e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4463e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis else 4473e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setInit(Init, ElementInit.takeAs<Expr>()); 4484423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } else { 4494423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4504423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // of the rest of elements and exit. 4514423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) { 4524423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4534423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis return; 4544423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 4554423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis 4567491c499e826682e128a400038361ebcbde30eecSebastian Redl if (InitSeq.isConstructorInitialization()) { 4574423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // Value-initialization requires a constructor call, so 4584423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // extend the initializer list to include the constructor 4594423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // call and make a note that we'll need to take another pass 4604423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // through the initializer list. 4614423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->updateInit(SemaRef.Context, Init, ElementInit.takeAs<Expr>()); 4624423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis RequiresSecondPass = true; 4634423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 464cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 465ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else if (InitListExpr *InnerILE 46621f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis = dyn_cast_or_null<InitListExpr>(InitExpr)) 467cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(ElementEntity, InnerILE, RequiresSecondPass); 4684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 4694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 4704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 47168355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 472cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::InitListChecker(Sema &S, const InitializedEntity &Entity, 47314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *IL, QualType &T, 474c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool VerifyOnly, bool AllowBraceElision) 475b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith : SemaRef(S), VerifyOnly(VerifyOnly), AllowBraceElision(AllowBraceElision) { 4760cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff hadError = false; 477c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 478b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman unsigned newIndex = 0; 4794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FullyStructuredList 481ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor = getStructuredSubobjectInit(IL, newIndex, T, 0, 0, IL->getSourceRange()); 482dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckExplicitInitList(Entity, IL, T, newIndex, 48346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson FullyStructuredList, newStructuredIndex, 484eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor /*TopLevelObject=*/true); 485c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 48614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && !VerifyOnly) { 487cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool RequiresSecondPass = false; 488cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(Entity, FullyStructuredList, RequiresSecondPass); 48916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (RequiresSecondPass && !hadError) 490dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(Entity, FullyStructuredList, 491cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor RequiresSecondPass); 492cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 4930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4940cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4950cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numArrayElements(QualType DeclType) { 496638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // FIXME: use a proper constant 497638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman int maxElements = 0x7FFFFFFF; 498c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const ConstantArrayType *CAT = 4990820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 5000cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = static_cast<int>(CAT->getSize().getZExtValue()); 5010cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 5020cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return maxElements; 5030cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5040cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5050cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numStructUnionElements(QualType DeclType) { 5066217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *structDecl = DeclType->getAs<RecordType>()->getDecl(); 5074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor int InitializableMembers = 0; 5081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (RecordDecl::field_iterator 50917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = structDecl->field_begin(), 51017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = structDecl->field_end(); 5114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Field != FieldEnd; ++Field) { 512d61db33331c264d6361283602b248a7423040597Douglas Gregor if (!Field->isUnnamedBitfield()) 5134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++InitializableMembers; 5144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 51539ba4aeca296b1c9f04bde7d9d3cbbf129f1abd3Argyrios Kyrtzidis if (structDecl->isUnion()) 516f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return std::min(InitializableMembers, 1); 517f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return InitializableMembers - structDecl->hasFlexibleArrayMember(); 5180cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5190cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5208ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckImplicitInitList(const InitializedEntity &Entity, 521987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, 5224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType T, unsigned &Index, 5234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 524629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman unsigned &StructuredIndex) { 5250cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff int maxElements = 0; 5261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (T->isArrayType()) 5280cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numArrayElements(T); 529fb87b89fc9eb103e19fb8e4b925c23f0bd091b99Douglas Gregor else if (T->isRecordType()) 5300cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numStructUnionElements(T); 531b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman else if (T->isVectorType()) 532183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall maxElements = T->getAs<VectorType>()->getNumElements(); 5330cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff else 534b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("CheckImplicitInitList(): Illegal type"); 535b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 536402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman if (maxElements == 0) { 53714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 53814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(ParentIList->getInit(Index)->getLocStart(), 53914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_implicit_empty_initializer); 5404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 541402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman hadError = true; 542402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman return; 543402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman } 544402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman 5454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Build a structured initializer list corresponding to this subobject. 5464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredSubobjectInitList 5471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = getStructuredSubobjectInit(ParentIList, Index, T, StructuredList, 5481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredIndex, 54996a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceRange(ParentIList->getInit(Index)->getLocStart(), 550ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor ParentIList->getSourceRange().getEnd())); 5514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredSubobjectInitIndex = 0; 5524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 5534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Check the element types and build the structural subobject. 55487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned StartIndex = Index; 555dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, ParentIList, T, 556987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 5571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredSubobjectInitList, 558629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman StructuredSubobjectInitIndex); 559c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl 560c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (VerifyOnly) { 561c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (!AllowBraceElision && (T->isArrayType() || T->isRecordType())) 562c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl hadError = true; 563c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl } else { 56414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->setType(T); 56514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 566c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl unsigned EndIndex = (Index == StartIndex? StartIndex : Index - 1); 56714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the structured sub-object initializer so that it's ending 56814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // range corresponds with the end of the last initializer it used. 56914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (EndIndex < ParentIList->getNumInits()) { 57014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceLocation EndLoc 57114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = ParentIList->getInit(EndIndex)->getSourceRange().getEnd(); 57214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->setRBraceLoc(EndLoc); 57314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 57414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 575c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl // Complain about missing braces. 57614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (T->isArrayType() || T->isRecordType()) { 57714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(StructuredSubobjectInitList->getLocStart(), 578c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl AllowBraceElision ? diag::warn_missing_braces : 579c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl diag::err_missing_braces) 58014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << StructuredSubobjectInitList->getSourceRange() 58114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << FixItHint::CreateInsertion( 58214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->getLocStart(), "{") 58314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << FixItHint::CreateInsertion( 58414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PP.getLocForEndOfToken( 585dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi StructuredSubobjectInitList->getLocEnd()), 58614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "}"); 587c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (!AllowBraceElision) 588c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl hadError = true; 58914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 5901e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner } 5910cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5920cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckExplicitInitList(const InitializedEntity &Entity, 59446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 5954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 597eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 598eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 599c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman assert(IList->isExplicit() && "Illegal Implicit InitListExpr"); 60014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 60114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SyntacticToSemantic[IList] = StructuredList; 60214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setSyntacticForm(IList); 60314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 604dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, IList, T, /*SubobjectIsDesignatorContext=*/true, 60546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson Index, StructuredList, StructuredIndex, TopLevelObject); 60614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 6075c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman QualType ExprTy = T; 6085c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman if (!ExprTy->isArrayType()) 6095c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman ExprTy = ExprTy.getNonLValueExprType(SemaRef.Context); 61014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setType(ExprTy); 61114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setType(ExprTy); 61214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 613638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (hadError) 614638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 615c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 616638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (Index < IList->getNumInits()) { 617c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman // We have leftover initializers 61814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 6194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus || 6204e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie (SemaRef.getLangOpts().OpenCL && 62114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getType()->isVectorType())) { 62214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 62314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 62414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 62514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 62614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 627e540858b289b23653bcb23646f135729203635cbEli Friedman if (StructuredIndex == 1 && 628e540858b289b23653bcb23646f135729203635cbEli Friedman IsStringInit(StructuredList->getInit(0), T, SemaRef.Context)) { 6297c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers_in_char_array_initializer; 6304e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus) { 6317c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor DK = diag::err_excess_initializers_in_char_array_initializer; 632e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 633e540858b289b23653bcb23646f135729203635cbEli Friedman } 634bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman // Special-case 6350820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 636dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getInit(Index)->getSourceRange(); 637d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman } else if (!T->isIncompleteType()) { 638b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // Don't complain for incomplete types, since we'll get an error 639b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // elsewhere 640eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType CurrentObjectType = StructuredList->getType(); 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int initKind = 642eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isArrayType()? 0 : 643eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isVectorType()? 1 : 644eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isScalarType()? 2 : 645eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isUnionType()? 3 : 646eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 4; 6477c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 6487c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers; 6494e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus) { 650e540858b289b23653bcb23646f135729203635cbEli Friedman DK = diag::err_excess_initializers; 6510863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman hadError = true; 6520863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman } 6534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().OpenCL && initKind == 1) { 6540863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman DK = diag::err_excess_initializers; 655e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 656e540858b289b23653bcb23646f135729203635cbEli Friedman } 6577c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 6580820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 659eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << initKind << IList->getInit(Index)->getSourceRange(); 660c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 661c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 662cda25a977e4b7fe4e080b87586410eaeab7b62f6Eli Friedman 66314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && T->isScalarType() && IList->getNumInits() == 1 && 66414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !TopLevelObject) 6650820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init) 666a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor << IList->getSourceRange() 667849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocStart()) 668849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocEnd()); 6690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6718ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, 67246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &DeclType, 67487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool SubobjectIsDesignatorContext, 6754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 677eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 678eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 6790c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (DeclType->isAnyComplexType() && SubobjectIsDesignatorContext) { 6800c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Explicitly braced initializer for complex type can be real+imaginary 6810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // parts. 6820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckComplexType(Entity, IList, DeclType, Index, 6830c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 6840c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (DeclType->isScalarType()) { 68546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, DeclType, Index, 68646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 687c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (DeclType->isVectorType()) { 688dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckVectorType(Entity, IList, DeclType, Index, 68946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 69020599392a99956eaac4cf351a0935574090cb6c3Richard Smith } else if (DeclType->isRecordType()) { 69120599392a99956eaac4cf351a0935574090cb6c3Richard Smith assert(DeclType->isAggregateType() && 69220599392a99956eaac4cf351a0935574090cb6c3Richard Smith "non-aggregate records should be handed in CheckSubElementType"); 69320599392a99956eaac4cf351a0935574090cb6c3Richard Smith RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 69420599392a99956eaac4cf351a0935574090cb6c3Richard Smith CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 69520599392a99956eaac4cf351a0935574090cb6c3Richard Smith SubobjectIsDesignatorContext, Index, 69620599392a99956eaac4cf351a0935574090cb6c3Richard Smith StructuredList, StructuredIndex, 69720599392a99956eaac4cf351a0935574090cb6c3Richard Smith TopLevelObject); 69820599392a99956eaac4cf351a0935574090cb6c3Richard Smith } else if (DeclType->isArrayType()) { 69920599392a99956eaac4cf351a0935574090cb6c3Richard Smith llvm::APSInt Zero( 70020599392a99956eaac4cf351a0935574090cb6c3Richard Smith SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 70120599392a99956eaac4cf351a0935574090cb6c3Richard Smith false); 70220599392a99956eaac4cf351a0935574090cb6c3Richard Smith CheckArrayType(Entity, IList, DeclType, Zero, 70320599392a99956eaac4cf351a0935574090cb6c3Richard Smith SubobjectIsDesignatorContext, Index, 70420599392a99956eaac4cf351a0935574090cb6c3Richard Smith StructuredList, StructuredIndex); 705613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 706613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 7074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 70814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 70914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 71014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 711d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 712930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 7138ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 7148ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 715c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (DeclType->isObjCObjectType()) { 71614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 71714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_objc_class) 71814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7194d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7200cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 72114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 72214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 72314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7244d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7250cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 7260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 7270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 7288ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 72946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 7301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 7314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 7324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 7346fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 735c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 73620599392a99956eaac4cf351a0935574090cb6c3Richard Smith if (!ElemType->isRecordType() || ElemType->isAggregateType()) { 73720599392a99956eaac4cf351a0935574090cb6c3Richard Smith unsigned newIndex = 0; 73820599392a99956eaac4cf351a0935574090cb6c3Richard Smith unsigned newStructuredIndex = 0; 73920599392a99956eaac4cf351a0935574090cb6c3Richard Smith InitListExpr *newStructuredList 74020599392a99956eaac4cf351a0935574090cb6c3Richard Smith = getStructuredSubobjectInit(IList, Index, ElemType, 74120599392a99956eaac4cf351a0935574090cb6c3Richard Smith StructuredList, StructuredIndex, 74220599392a99956eaac4cf351a0935574090cb6c3Richard Smith SubInitList->getSourceRange()); 74320599392a99956eaac4cf351a0935574090cb6c3Richard Smith CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 74420599392a99956eaac4cf351a0935574090cb6c3Richard Smith newStructuredList, newStructuredIndex); 74520599392a99956eaac4cf351a0935574090cb6c3Richard Smith ++StructuredIndex; 74620599392a99956eaac4cf351a0935574090cb6c3Richard Smith ++Index; 74720599392a99956eaac4cf351a0935574090cb6c3Richard Smith return; 74820599392a99956eaac4cf351a0935574090cb6c3Richard Smith } 74920599392a99956eaac4cf351a0935574090cb6c3Richard Smith assert(SemaRef.getLangOpts().CPlusPlus && 75020599392a99956eaac4cf351a0935574090cb6c3Richard Smith "non-aggregate records are only possible in C++"); 75120599392a99956eaac4cf351a0935574090cb6c3Richard Smith // C++ initialization is handled later. 75220599392a99956eaac4cf351a0935574090cb6c3Richard Smith } 75320599392a99956eaac4cf351a0935574090cb6c3Richard Smith 75420599392a99956eaac4cf351a0935574090cb6c3Richard Smith if (ElemType->isScalarType()) { 755fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckScalarType(Entity, IList, ElemType, Index, 756fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 757930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 758fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckReferenceType(Entity, IList, ElemType, Index, 759fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 760fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 761930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 762fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (const ArrayType *arrayType = SemaRef.Context.getAsArrayType(ElemType)) { 763fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // arrayType can be incomplete if we're initializing a flexible 764fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // array member. There's nothing we can do with the completed 765fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // type here, though. 766930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 767fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Expr *Str = IsStringInit(expr, arrayType, SemaRef.Context)) { 7688a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman if (!VerifyOnly) { 7698a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, ElemType, arrayType, SemaRef); 7708a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 7718a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman } 772fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 773fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 774930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 775930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 776fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization. 777fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 7784e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (SemaRef.getLangOpts().CPlusPlus) { 779930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 780fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // All implicit type conversions (clause 4) are considered when 7815d3d41d0873d51b405972baf38e1f3a7ef5b49e0Sebastian Redl // initializing the aggregate member with an initializer from 782fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // an initializer-list. If the initializer can initialize a 783fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // member, the member is initialized. [...] 784fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 785fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // FIXME: Better EqualLoc? 786fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind Kind = 787fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 788fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 789fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 790fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Seq) { 79114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 792b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith ExprResult Result = 793b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Seq.Perform(SemaRef, Entity, Kind, MultiExprArg(&expr, 1)); 794b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith if (Result.isInvalid()) 795b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith hadError = true; 79614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 79714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 798b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Result.takeAs<Expr>()); 79914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 800fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 801fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 802fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 803fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 804fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 805fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 806fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C99 6.7.8p13: 8071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 808fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // The initializer for a structure or union object that has 809fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // automatic storage duration shall be either an initializer 810fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // list as described below, or a single expression that has 811fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // compatible structure or union type. In the latter case, the 812fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // initial value of the object, including unnamed members, is 813fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // that of the expression. 814429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult ExprRes = SemaRef.Owned(expr); 815fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if ((ElemType->isRecordType() || ElemType->isVectorType()) && 81614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.CheckSingleAssignmentConstraints(ElemType, ExprRes, 81714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !VerifyOnly) 818fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall == Sema::Compatible) { 819429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 820429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 821429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley else { 822429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes = SemaRef.DefaultFunctionArrayLvalueConversion(ExprRes.take()); 823429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 824429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 825429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 826429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley UpdateStructuredListElement(StructuredList, StructuredIndex, 827429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.takeAs<Expr>()); 828930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 829fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 830930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 831429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.release(); 832fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 833fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 834fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 835fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C++ [dcl.init.aggr]p12: 836fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // 837fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // [...] Otherwise, if the member is itself a non-empty 838fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // subaggregate, brace elision is assumed and the initializer is 839fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // considered for the initialization of the first member of 840fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // the subaggregate. 8414e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().OpenCL && 84261b4bc80e943578ae855810918a1dc9697dbd15bTanya Lattner (ElemType->isAggregateType() || ElemType->isVectorType())) { 843fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 844fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredIndex); 845fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 846fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 84714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 84814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // We cannot initialize this element, so let 84914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // PerformCopyInitialization produce the appropriate diagnostic. 85014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 85114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 85214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 85314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 854fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall hadError = true; 855fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 856fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 857930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 858b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 859b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 8600c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedmanvoid InitListChecker::CheckComplexType(const InitializedEntity &Entity, 8610c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 8620c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 8630c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 8640c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex) { 8650c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(Index == 0 && "Index in explicit init list must be zero"); 8660c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8670c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // As an extension, clang supports complex initializers, which initialize 8680c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number component-wise. When an explicit initializer list for 8690c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number contains two two initializers, this extension kicks in: 8700c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // it exepcts the initializer list to contain two elements convertible to 8710c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the element type of the complex type. The first element initializes 8720c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the real part, and the second element intitializes the imaginary part. 8730c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8740c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (IList->getNumInits() != 2) 8750c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman return CheckScalarType(Entity, IList, DeclType, Index, StructuredList, 8760c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredIndex); 8770c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8780c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // This is an extension in C. (The builtin _Complex type does not exist 8790c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // in the C++ standard.) 8804e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().CPlusPlus && !VerifyOnly) 8810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman SemaRef.Diag(IList->getLocStart(), diag::ext_complex_component_init) 8820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman << IList->getSourceRange(); 8830c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8840c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Initialize the complex number. 8850c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman QualType elementType = DeclType->getAs<ComplexType>()->getElementType(); 8860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity ElementEntity = 8870c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8890c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman for (unsigned i = 0; i < 2; ++i) { 8900c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman ElementEntity.setElementIndex(Index); 8910c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckSubElementType(ElementEntity, IList, elementType, Index, 8920c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 8930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } 8940c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman} 8950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8960c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8978ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 89846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 8996fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 9004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9014c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 902b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Index >= IList->getNumInits()) { 9036b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith if (!VerifyOnly) 9046b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith SemaRef.Diag(IList->getLocStart(), 9054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie SemaRef.getLangOpts().CPlusPlus0x ? 9066b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::warn_cxx98_compat_empty_scalar_initializer : 9076b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::err_empty_scalar_initializer) 9086b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith << IList->getSourceRange(); 9094e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie hadError = !SemaRef.getLangOpts().CPlusPlus0x; 9104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 9114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 912bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 9130cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 914b934c2d77144471f35c5ebae9e925b056dac8112John McCall 915b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *expr = IList->getInit(Index); 916b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { 91714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 91814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(SubIList->getLocStart(), 91914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::warn_many_braces_around_scalar_init) 92014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SubIList->getSourceRange(); 921b934c2d77144471f35c5ebae9e925b056dac8112John McCall 922b934c2d77144471f35c5ebae9e925b056dac8112John McCall CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, 923b934c2d77144471f35c5ebae9e925b056dac8112John McCall StructuredIndex); 924b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 925b934c2d77144471f35c5ebae9e925b056dac8112John McCall } else if (isa<DesignatedInitExpr>(expr)) { 92614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 92796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(expr->getLocStart(), 92814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_for_scalar_init) 92914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << expr->getSourceRange(); 930b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; 931b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 932b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 933b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 934b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 935b934c2d77144471f35c5ebae9e925b056dac8112John McCall 93614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 93714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 93814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 93914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 94014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 94114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 94214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 943b934c2d77144471f35c5ebae9e925b056dac8112John McCall ExprResult Result = 944b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 945191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(expr), 946191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 947b934c2d77144471f35c5ebae9e925b056dac8112John McCall 948b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *ResultExpr = 0; 949b934c2d77144471f35c5ebae9e925b056dac8112John McCall 950b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Result.isInvalid()) 951b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; // types weren't compatible. 952b934c2d77144471f35c5ebae9e925b056dac8112John McCall else { 953b934c2d77144471f35c5ebae9e925b056dac8112John McCall ResultExpr = Result.takeAs<Expr>(); 954dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 955b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (ResultExpr != expr) { 956b934c2d77144471f35c5ebae9e925b056dac8112John McCall // The type was promoted, update initializer list. 957b934c2d77144471f35c5ebae9e925b056dac8112John McCall IList->setInit(Index, ResultExpr); 958b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 959b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 960b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (hadError) 961b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 962b934c2d77144471f35c5ebae9e925b056dac8112John McCall else 963b934c2d77144471f35c5ebae9e925b056dac8112John McCall UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 964b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 9650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 9660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 9678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 9688ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 969930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 970930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 971930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 97214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Index >= IList->getNumInits()) { 973390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 974390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 975390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 976390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 97714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 97814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), 97914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_init_reference_member_uninitialized) 98014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType 98114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IList->getSourceRange(); 982930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 983930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 984930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 985930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 986930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 98714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 98814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Expr *expr = IList->getInit(Index); 9894e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (isa<InitListExpr>(expr) && !SemaRef.getLangOpts().CPlusPlus0x) { 99014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 99114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 99214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << IList->getSourceRange(); 99314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 99414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 99514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 99614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 99714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 99814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 99914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 100014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 100114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 100214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 100314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 100414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 100514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 100614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ExprResult Result = 100714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 100814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 100914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 101014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Result.isInvalid()) 101214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 101314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl expr = Result.takeAs<Expr>(); 101514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setInit(Index, expr); 101614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (hadError) 101814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 101914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 102014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 102114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 1022930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 1023930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 10248ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 102546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 10264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 10274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 10284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 102920e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 103020e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned maxElements = VT->getNumElements(); 103120e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numEltsInit = 0; 103220e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType elementType = VT->getElementType(); 103320e047abc5f19dc948436c0fb891450d9cd40667John McCall 10343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Make sure the element type can be value-initialized. 10363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10373ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 10383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity)); 10393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl return; 10403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 10413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 10424e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().OpenCL) { 104320e047abc5f19dc948436c0fb891450d9cd40667John McCall // If the initializing element is a vector, try to copy-initialize 104420e047abc5f19dc948436c0fb891450d9cd40667John McCall // instead of breaking it apart (which is doomed to failure anyway). 104520e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *Init = IList->getInit(Index); 104620e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!isa<InitListExpr>(Init) && Init->getType()->isVectorType()) { 104714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 104814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(Init))) 104914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 105014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 105114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 105214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 105314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 105420e047abc5f19dc948436c0fb891450d9cd40667John McCall ExprResult Result = 105520e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.PerformCopyInitialization(Entity, Init->getLocStart(), 1056191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(Init), 1057191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 105820e047abc5f19dc948436c0fb891450d9cd40667John McCall 105920e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *ResultExpr = 0; 106020e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Result.isInvalid()) 106120e047abc5f19dc948436c0fb891450d9cd40667John McCall hadError = true; // types weren't compatible. 106220e047abc5f19dc948436c0fb891450d9cd40667John McCall else { 106320e047abc5f19dc948436c0fb891450d9cd40667John McCall ResultExpr = Result.takeAs<Expr>(); 1064dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 106520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (ResultExpr != Init) { 106620e047abc5f19dc948436c0fb891450d9cd40667John McCall // The type was promoted, update initializer list. 106720e047abc5f19dc948436c0fb891450d9cd40667John McCall IList->setInit(Index, ResultExpr); 10682ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 10692ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 107020e047abc5f19dc948436c0fb891450d9cd40667John McCall if (hadError) 107120e047abc5f19dc948436c0fb891450d9cd40667John McCall ++StructuredIndex; 107220e047abc5f19dc948436c0fb891450d9cd40667John McCall else 107314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 107414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ResultExpr); 107520e047abc5f19dc948436c0fb891450d9cd40667John McCall ++Index; 107620e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 10770cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 107920e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 108020e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1081dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 108220e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 108320e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 10843ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10853ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10863ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(ElementEntity); 108720e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 10883ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 1089dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 109020e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 109120e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 109220e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 109320e047abc5f19dc948436c0fb891450d9cd40667John McCall } 109420e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 109520e047abc5f19dc948436c0fb891450d9cd40667John McCall } 109620e047abc5f19dc948436c0fb891450d9cd40667John McCall 109720e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 109820e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1099dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 110020e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL initializers allows vectors to be constructed from vectors. 110120e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i) { 110220e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 110320e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 110420e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 1105dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 110620e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 110720e047abc5f19dc948436c0fb891450d9cd40667John McCall 110820e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType IType = IList->getInit(Index)->getType(); 110920e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!IType->isVectorType()) { 111020e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 111120e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 111220e047abc5f19dc948436c0fb891450d9cd40667John McCall ++numEltsInit; 111320e047abc5f19dc948436c0fb891450d9cd40667John McCall } else { 111420e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType VecType; 111520e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *IVT = IType->getAs<VectorType>(); 111620e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numIElts = IVT->getNumElements(); 1117dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 111820e047abc5f19dc948436c0fb891450d9cd40667John McCall if (IType->isExtVectorType()) 111920e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); 112020e047abc5f19dc948436c0fb891450d9cd40667John McCall else 112120e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getVectorType(elementType, numIElts, 1122e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson IVT->getVectorKind()); 112320e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, VecType, Index, 112420e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 112520e047abc5f19dc948436c0fb891450d9cd40667John McCall numEltsInit += numIElts; 112620e047abc5f19dc948436c0fb891450d9cd40667John McCall } 11270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 112820e047abc5f19dc948436c0fb891450d9cd40667John McCall 112920e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL requires all elements to be initialized. 11303ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (numEltsInit != maxElements) { 11313ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!VerifyOnly) 113296a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(IList->getLocStart(), 11333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl diag::err_vector_incorrect_num_initializers) 11343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl << (numEltsInit < maxElements) << maxElements << numEltsInit; 11353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 11363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 11370cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11380cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 11398ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 1140784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 114187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 11421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 11434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 11444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 11454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 1146ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = SemaRef.Context.getAsArrayType(DeclType); 1147ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 11480cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 11490cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 1150ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (Expr *Str = IsStringInit(IList->getInit(Index), arrayType, 115179e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 11524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 11534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 11544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 11554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 11564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 115714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 11588a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, DeclType, arrayType, SemaRef); 115914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 116014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 116114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 11620cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 11630cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 11640cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 11650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1166ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(arrayType)) { 1167638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 1168638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 1169638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 117014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 117114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 117214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_variable_object_no_init) 117314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << VAT->getSizeExpr()->getSourceRange(); 1174638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 11754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 11764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 1177638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 1178638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 1179638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 118005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 11814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 11824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 118305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 1184ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(arrayType)) { 118505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 11869f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extOrTrunc(maxElements.getBitWidth()); 1187e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 118805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 118905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 119005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1191ce6c9b7da219c8640a0559f75770cfc6622de083John McCall QualType elementType = arrayType->getElementType(); 119205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 119305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 119405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 119587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 119687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 119787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 119887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 119987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 120087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 120187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 120287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 12039a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 12044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 1205eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 1206eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 120705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 120887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 120987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 121087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 1211f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 12129f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad maxElements = maxElements.extend(elementIndex.getBitWidth()); 1213f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 12149f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extend(maxElements.getBitWidth()); 1215e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 1216f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 121787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 121887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 121987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 122087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 122105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 122305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 122405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 122605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 122705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 12280cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 122905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 12308ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 1231dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 12328ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 12338ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 12348ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 12358ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 123605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 123705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 123805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 123905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 124005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 124105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 12420cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 124314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && DeclType->isIncompleteArrayType() && !VerifyOnly) { 12440cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1245396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1246e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 124705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1248396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1249396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 12500820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1251396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 12520cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1253396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 12541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1255396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 12560cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 12573ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!hadError && VerifyOnly) { 12583ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check if there are any members of the array that get value-initialized. 12593ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // If so, check if doing that is possible. 12603ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: This needs to detect holes left by designated initializers too. 12613ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (maxElementsKnown && elementIndex < maxElements) 12623ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(InitializedEntity::InitializeElement( 12633ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SemaRef.Context, 0, Entity)); 12643ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 12650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 12660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1267f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedmanbool InitListChecker::CheckFlexibleArrayInit(const InitializedEntity &Entity, 1268f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, 1269f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FieldDecl *Field, 1270f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject) { 1271f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Handle GNU flexible array initializers. 1272f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman unsigned FlexArrayDiag; 1273f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (isa<InitListExpr>(InitExpr) && 1274f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman cast<InitListExpr>(InitExpr)->getNumInits() == 0) { 1275f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Empty flexible array init always allowed as an extension 1276f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 12774e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (SemaRef.getLangOpts().CPlusPlus) { 1278f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init in C++; it is not required for gcc 1279f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // compatibility, and it needs work to IRGen correctly in general. 1280f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1281f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (!TopLevelObject) { 1282f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on non-top-level object 1283f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1284f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (Entity.getKind() != InitializedEntity::EK_Variable) { 1285f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on anything which is not a variable. 1286f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1287f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (cast<VarDecl>(Entity.getDecl())->hasLocalStorage()) { 1288f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on local variables. 1289f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1290f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else { 1291f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Allow other cases. 1292f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 1293f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } 129414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 129514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 129696a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(InitExpr->getLocStart(), 129714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl FlexArrayDiag) 129896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar << InitExpr->getLocStart(); 129914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 130014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << Field; 130114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1302f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 1303f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman return FlexArrayDiag != diag::ext_flexible_array_init; 1304f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman} 1305f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 13068ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 13072bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 13081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 130987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 13101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 13114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 13124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1313eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1314eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 13156217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 13161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1317b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1318b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1319b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 1320b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1321b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 13221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 13233498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 13243498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 13253ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Value-initialize the first named member of the union. 13263ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 13273ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 13283ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl Field != FieldEnd; ++Field) { 13293ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Field->getDeclName()) { 13303ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 13313ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 1332581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity)); 13333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl else 1334581deb3da481053c4993c7600f97acf7768caac5David Blaikie StructuredList->setInitializedFieldInUnion(*Field); 13353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl break; 13363498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13373498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13383498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 13393498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13403498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 134105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 134205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 134305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 134405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 13456217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 134617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1347dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 134880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 134905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 135005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 135105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 135205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 135387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 135487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 135587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 135687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 135787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 135887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 135987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 136087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 13619a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 13624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1363eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1364eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 136505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 136605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1367dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 136880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 136980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 137080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 137180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 137205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 137305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 137405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 137505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 137605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 137744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 137805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 137944b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1380dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1381dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1382dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1383dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 138405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 138505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1386b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 138744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 13880bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 13894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 139005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1391b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 13920cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 139344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 139454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 139514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 139614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 1397581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = !SemaRef.CanUseDecl(*Field); 139814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 1399581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, 140014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getInit(Index)->getLocStart()); 140114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 140254001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 140354001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Field; 140454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor hadError = true; 140554001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor continue; 140614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 140754001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 14088ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 1409581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 14108ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14118ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1412dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 14130bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 141414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DeclType->isUnionType() && !VerifyOnly) { 14150bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 1416581deb3da481053c4993c7600f97acf7768caac5David Blaikie StructuredList->setInitializedFieldInUnion(*Field); 14170bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 141805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 141905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 14200cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 142144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 142280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 142314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && InitializedSomething && CheckForMissingFields && 142414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Field != FieldEnd && !Field->getType()->isIncompleteArrayType() && 142514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DeclType->isUnionType()) { 142680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 142780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 142880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 142980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 143080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 143180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 143280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 143380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 143480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 14383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check that any remaining fields can be value-initialized. 14393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly && Field != FieldEnd && !DeclType->isUnionType() && 14403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl !Field->getType()->isIncompleteArrayType()) { 14413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: Should check for holes left by designated initializers too. 14423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (; Field != FieldEnd && !hadError; ++Field) { 14433ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!Field->isUnnamedBitfield()) 14443ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 1445581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity)); 14463ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14473ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14483ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 14491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1450a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1451eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1452eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1453581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (CheckFlexibleArrayInit(Entity, IList->getInit(Index), *Field, 1454f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) { 1455eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1456a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1457a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1458eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1459eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 14608ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 1461581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 1462dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 14638ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 1464dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14658ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 14668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 1467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1468987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 14690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 14700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1471ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1472ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1473ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1474ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1475ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 14761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 14771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1478a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IndirectFieldDecl *IndirectField) { 1479ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1480ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1481ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 14825f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Designator, 4> Replacements; 1483a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet for (IndirectFieldDecl::chain_iterator PI = IndirectField->chain_begin(), 1484a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet PE = IndirectField->chain_end(); PI != PE; ++PI) { 1485a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (PI + 1 == PE) 14861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1487ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1488ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1489ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1490ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1491ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1492a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(isa<FieldDecl>(*PI)); 1493a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Replacements.back().setField(cast<FieldDecl>(*PI)); 1494ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1495ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1496ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1497ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1498ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1499319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1500ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 1501a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet} 15021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1503dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Given an implicit anonymous field, search the IndirectField that 1504a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet/// corresponds to FieldName. 1505a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichetstatic IndirectFieldDecl *FindIndirectFieldDesignator(FieldDecl *AnonField, 1506a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IdentifierInfo *FieldName) { 1507a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(AnonField->isAnonymousStructOrUnion()); 1508a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Decl *NextDecl = AnonField->getNextDeclInContext(); 15093e78b19e51034dd27c6e0d811522148345e299e4Aaron Ballman while (IndirectFieldDecl *IF = 15103e78b19e51034dd27c6e0d811522148345e299e4Aaron Ballman dyn_cast_or_null<IndirectFieldDecl>(NextDecl)) { 1511a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (FieldName && FieldName == IF->getAnonField()->getIdentifier()) 1512a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return IF; 1513a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet NextDecl = NextDecl->getNextDeclInContext(); 1514ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1515a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return 0; 1516ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1517ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 151814b0c194b356a1204d081765b3e6699687bed97cSebastian Redlstatic DesignatedInitExpr *CloneDesignatedInitExpr(Sema &SemaRef, 151914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE) { 152014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned NumIndexExprs = DIE->getNumSubExprs() - 1; 152114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SmallVector<Expr*, 4> IndexExprs(NumIndexExprs); 152214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl for (unsigned I = 0; I < NumIndexExprs; ++I) 152314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IndexExprs[I] = DIE->getSubExpr(I + 1); 152414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return DesignatedInitExpr::Create(SemaRef.Context, DIE->designators_begin(), 152514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->size(), IndexExprs.data(), 152614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl NumIndexExprs, DIE->getEqualOrColonLoc(), 152714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->usesGNUSyntax(), DIE->getInit()); 152814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl} 152914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1530425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainnamespace { 1531425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1532425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// Callback to only accept typo corrections that are for field members of 1533425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// the given struct or union. 1534425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainclass FieldInitializerValidatorCCC : public CorrectionCandidateCallback { 1535425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain public: 1536425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain explicit FieldInitializerValidatorCCC(RecordDecl *RD) 1537425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain : Record(RD) {} 1538425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1539425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain virtual bool ValidateCandidate(const TypoCorrection &candidate) { 1540425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldDecl *FD = candidate.getCorrectionDeclAs<FieldDecl>(); 1541425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain return FD && FD->getDeclContext()->getRedeclContext()->Equals(Record); 1542425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain } 1543425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1544425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain private: 1545425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RecordDecl *Record; 1546425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain}; 1547425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1548425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain} 1549425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 155005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 155105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 155205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 155305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 155405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 155505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 15561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 15574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 155805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 155905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 156005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 156105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1562711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1563711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1564711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 156505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 156605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param DeclType The type of the "current object" (C99 6.7.8p17), 156705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 156805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 156987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 157087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 157187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 157205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 157487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 157587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 157605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 157805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 157905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 15804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 15814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 15824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 15834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 158405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 15851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 15868ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 15879a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 158814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE, 158914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned DesigIdx, 159014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType &CurrentObjectType, 159114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl RecordDecl::field_iterator *NextField, 159214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl llvm::APSInt *NextElementIndex, 159314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &Index, 159414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *StructuredList, 159514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &StructuredIndex, 1596eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1597eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1598711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 159987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 160087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 16016fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16026fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 16036fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 16046fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 16056fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 16066fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 16076fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16089a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 16094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 16106fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16116fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 16126fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 16136fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 16146fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 16156fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 16166fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 161787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 161887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 161905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1620711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 162114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool IsFirstDesignator = (DesigIdx == 0); 162214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 162314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert((IsFirstDesignator || StructuredList) && 162414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Need a non-designated initializer list to start from"); 162514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 162614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Determine the structural initializer list that corresponds to the 162714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // current subobject. 1628a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer StructuredList = IsFirstDesignator? SyntacticToSemantic.lookup(IList) 162914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 163014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList, StructuredIndex, 163114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceRange(D->getStartLocation(), 163214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd())); 163314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(StructuredList && "Expected a structured initializer list"); 163414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 16354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 163687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 163787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 163887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 163987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 164087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 164287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 164487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 16451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 16466217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 164787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 164887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 164987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 165087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 165114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 165214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 16534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie << SemaRef.getLangOpts().CPlusPlus << CurrentObjectType; 165487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 165587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 165687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 165787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 16594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 16604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1661ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 166287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 16634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 16641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 166517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 166617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 16674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 16684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 16694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 1670dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1671a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // If we find a field representing an anonymous field, look in the 1672a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // IndirectFieldDecl that follow for the designated initializer. 1673a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField && Field->isAnonymousStructOrUnion()) { 1674a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (IndirectFieldDecl *IF = 1675581deb3da481053c4993c7600f97acf7768caac5David Blaikie FindIndirectFieldDesignator(*Field, FieldName)) { 167614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // In verify mode, don't modify the original. 167714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 167814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE = CloneDesignatedInitExpr(SemaRef, DIE); 1679a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, IF); 1680a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet D = DIE->getDesignator(DesigIdx); 1681a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet break; 1682a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1683a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1684581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (KnownField && KnownField == *Field) 1685022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor break; 1686022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (FieldName && FieldName == Field->getIdentifier()) 16874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 16884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 16894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 169087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 169187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1693a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer if (VerifyOnly) { 1694a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer ++Index; 169514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return true; // No typo correction when just trying this out. 1696a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer } 169714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1698ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1699ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1700ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1701ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 17021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 170317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1704c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 17054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1706c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1707c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1708425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldInitializerValidatorCCC Validator(RT->getDecl()); 1709d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor TypoCorrection Corrected = SemaRef.CorrectTypo( 1710d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor DeclarationNameInfo(FieldName, D->getFieldLoc()), 171116e46dd0c284296cea819dfbf67942ecef02894dKaelyn Uhrain Sema::LookupMemberName, /*Scope=*/0, /*SS=*/0, Validator, 1712425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RT->getDecl()); 1713425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain if (Corrected) { 1714d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedStr( 17154e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Corrected.getAsString(SemaRef.getLangOpts())); 1716d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedQuotedStr( 17174e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Corrected.getQuoted(SemaRef.getLangOpts())); 1718425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain ReplacementField = Corrected.getCorrectionDeclAs<FieldDecl>(); 1719dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(D->getFieldLoc(), 1720c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1721d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FieldName << CurrentObjectType << CorrectedQuotedStr 1722d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), CorrectedStr); 1723dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(ReplacementField->getLocation(), 1724d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor diag::note_previous_decl) << CorrectedQuotedStr; 1725a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer hadError = true; 1726c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1727c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1728c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1729c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1730c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1731c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1732c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1733dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1734c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 17354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 17360820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 17374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 17381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 17394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1740ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1741ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1742ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1743c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1744a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField) { 1745c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1746c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1747c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1748c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1749c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1750c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1751c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1752c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1753581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (ReplacementField == *Field || 1754c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1755c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1756c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1757c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1758c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1759c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 176087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 17614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 17634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 17640bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 17654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 176614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 1767581deb3da481053c4993c7600f97acf7768caac5David Blaikie StructuredList->setInitializedFieldInUnion(*Field); 17680bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 17694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 177054001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 177114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 177214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 1773581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = !SemaRef.CanUseDecl(*Field); 177414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 1775581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, D->getFieldLoc()); 177614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 177754001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 177854001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor return true; 177914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 178054001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 178114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 178214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the designator with the field declaration. 1783581deb3da481053c4993c7600f97acf7768caac5David Blaikie D->setField(*Field); 17841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Make sure that our non-designated initializer list has space 178614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // for a subobject corresponding to this field. 178714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (FieldIndex >= StructuredList->getNumInits()) 178814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 178914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 17904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1791eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1792eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1793eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1794711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1795eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1796eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 179714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 179814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr::Designator *NextD 179914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = DIE->getDesignator(DesigIdx + 1); 180014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(NextD->getStartLocation(), 180114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_into_flexible_array_member) 180214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SourceRange(NextD->getStartLocation(), 180314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd()); 180414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1805581deb3da481053c4993c7600f97acf7768caac5David Blaikie << *Field; 180614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1807eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1808eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1809eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 18109046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner if (!hadError && !isa<InitListExpr>(DIE->getInit()) && 18119046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner !isa<StringLiteral>(DIE->getInit())) { 1812eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 181314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 181496a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(DIE->getInit()->getLocStart(), 181514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_flexible_array_init_needs_braces) 181614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DIE->getInit()->getSourceRange(); 181714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1818581deb3da481053c4993c7600f97acf7768caac5David Blaikie << *Field; 181914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1820eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1821eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1822eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1823f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Check GNU flexible array initializer. 1824581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (!Invalid && CheckFlexibleArrayInit(Entity, DIE->getInit(), *Field, 1825f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) 1826eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1827eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1828eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1829eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1830eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1831eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1832eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1833eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1834eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1835eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1836eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1837eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 18388ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 18398ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 1840581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 18418ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1842eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 18438ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1844eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1845eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1846eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1847eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1848eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1849eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1850eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1851eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1852eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1853eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1854eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1855262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie QualType FieldType = Field->getType(); 1856eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1857dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18589a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 1859581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 1860dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 1861dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FieldType, 0, 0, Index, 18629a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1863eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1864eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1865eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 186687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 186787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 186887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 186987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 18704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 187105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 187287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 187387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 187487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 187587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 187687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 18774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 187887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 187987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 188005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 188234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 188334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1884ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1885ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1886ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1887ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 188887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 188987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 1890dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18918ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 18924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 189387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 189487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 189505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 189787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 189887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 189987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 190187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 190387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 190487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 190587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 190687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 190887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 190987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 191087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 19110820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 191287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 191314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 191414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 191514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << CurrentObjectType; 191687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 191787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 191887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 191905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 192087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 192134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 192234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 192387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 1924a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DesignatedStartIndex = IndexExpr->EvaluateKnownConstInt(SemaRef.Context); 192534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 192634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 192787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 19283bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 19291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 1930a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeStart(*D)->EvaluateKnownConstInt(SemaRef.Context); 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 1932a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeEnd(*D)->EvaluateKnownConstInt(SemaRef.Context); 193387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 193434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1935e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // Codegen can't handle evaluating array range designators that have side 1936e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // effects, because we replicate the AST value for each initialized element. 1937e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // As such, set the sawArrayRangeDesignator() bit if we initialize multiple 1938e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // elements with something that has a side effect, so codegen can emit an 1939e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // "error unsupported" error instead of miscompiling the app. 1940e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner if (DesignatedStartIndex.getZExtValue()!=DesignatedEndIndex.getZExtValue()&& 194114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getInit()->HasSideEffects(SemaRef.Context) && !VerifyOnly) 1942a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 194387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 194405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 194587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 194687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 19479f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19489f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 194934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 19509f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19519f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 195234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 195334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 1954a4e20e1e43df39e39328035c84c46fdcbbf3a01eEli Friedman if (!VerifyOnly) 195596a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(IndexExpr->getLocStart(), 195614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_array_designator_too_large) 195714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 195814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IndexExpr->getSourceRange(); 195987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 196087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 196105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 196334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 196434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 19659f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19669f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 19673bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 19683bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 19699f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19709f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 197134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 197234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 197305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 19741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 19764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 197714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && 197814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 19791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 198034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 198134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 198334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 198434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 198634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 198734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 1988dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19899a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 19908ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 19919a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 199234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 199334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 199434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 199534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 1996dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19979a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 1998dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 1999dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementType, 0, 0, Index, 20009a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 2001eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 2002eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 200334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 200487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 200534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 200634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 200734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 200834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 200987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 201087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 201187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 201287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 201387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 201434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 20154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 201687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 201787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 20181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 201934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 202034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 202134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 202287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 202305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 2024dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 2025784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 20264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 20271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 202805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 202905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 20304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 20314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 20324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 20334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 20344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 20354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 20364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 20374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 203814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 203914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return 0; // No structured list in verification-only mode. 20404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 20414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 2042a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer ExistingInit = SyntacticToSemantic.lookup(IList); 20434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 20444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 20451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 20474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 20484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 20504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 20514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 20524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 20534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 20541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 20564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 20571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 20594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 20604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 20611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 2062ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 20634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 206496a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(ExistingInit->getLocStart(), 20654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 206654f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 20674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 20684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 20694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 2071709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 2072709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitRange.getBegin(), 0, 0, 2073ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 2074ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 20755c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman QualType ResultType = CurrentObjectType; 20765c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman if (!ResultType->isArrayType()) 20775c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman ResultType = ResultType.getNonLValueExprType(SemaRef.Context); 20785c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman Result->setType(ResultType); 20794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2080fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 2081fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 208208457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 2083f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis bool GotNumInits = false; 2084f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (!StructuredList) { 208508457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 2086f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2087f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } else if (Index < IList->getNumInits()) { 2088f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) { 208908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 2090f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2091f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } 209208457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 209308457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 20941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 2095fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 2096fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 2097fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 2098fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 2099fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 2100f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (GotNumInits && NumElements > NumInits) 2101fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 2102fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2103183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 2104fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 21056217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 2106fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 2107fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 2108fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 2109fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 21101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 211117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 2112fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2113fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 2114709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 2115fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 21164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 21174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 21184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 2119709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 21204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 21214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 21224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 21234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 21264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 21294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 21304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 21314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 21324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 21334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 21344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 21354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 21364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2137709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 2138709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 21394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 214096a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(expr->getLocStart(), 21414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 21424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 214396a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(PrevInit->getLocStart(), 21444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 214554f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 21464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 21474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 21504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 215205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 2153282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// value. This is essentially just a wrapper around 21543bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 215505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 2156282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// failure. Returns the index expression, possibly with an implicit cast 2157282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// added, on success. If everything went okay, Value will receive the 2158282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// value of the constant expression. 2159282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smithstatic ExprResult 21603bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 216196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = Index->getLocStart(); 216205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 216305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 2164282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith ExprResult Result = S.VerifyIntegerConstantExpression(Index, &Value); 2165282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (Result.isInvalid()) 2166282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return Result; 21673bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 21683bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 21693bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 217005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 217105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217253d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 2173282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return Result; 217405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 217505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217660d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 21777663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky SourceLocation Loc, 21787663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky bool GNUSyntax, 21797663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky ExprResult Init) { 218005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 218105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 21835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<ASTDesignator, 32> Designators; 21845f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Expr *, 32> InitExpressions; 218505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 218705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 218805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 218905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 219005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 21911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 219205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 219305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 219405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 219505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 219605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 219705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 2198282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!Index->isTypeDependent() && !Index->isValueDependent()) 2199282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith Index = CheckArrayDesignatorExpr(*this, Index, IndexValue).take(); 2200282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!Index) 220105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 220205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 220305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 220505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 220605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 220705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 220805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 220905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 221005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 221105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 221205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 221305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 221405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 221505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 22169ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 22179ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 22189ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 22199ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 2220282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!StartDependent) 2221282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith StartIndex = 2222282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith CheckArrayDesignatorExpr(*this, StartIndex, StartValue).take(); 2223282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!EndDependent) 2224282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith EndIndex = CheckArrayDesignatorExpr(*this, EndIndex, EndValue).take(); 2225282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 2226282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!StartIndex || !EndIndex) 222705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 2228d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 2229d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 22309ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 22319ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 22329ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 22339f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad EndValue = EndValue.extend(StartValue.getBitWidth()); 2234d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 22359f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad StartValue = StartValue.extend(EndValue.getBitWidth()); 2236d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 2237c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 2238d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 22391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 2240d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 2241d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 2242d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 2243d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 2245d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 2246d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 2247d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 2248d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 2249d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 225005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 225205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 225605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 225705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 225805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 225905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 226005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 226105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 2263beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 2264beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 2265beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad InitExpressions.data(), InitExpressions.size(), 2266e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson Loc, GNUSyntax, Init.takeAs<Expr>()); 2267dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 22684e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().C99) 22692d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor Diag(DIE->getLocStart(), diag::ext_designated_init) 22702d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor << DIE->getSourceRange(); 2271dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 227205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 227305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 2274c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 2275cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 2276cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 2277cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 227839da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 2279dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 2280cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 2281dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi : Parent(&Parent), Index(Index) 2282cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 2283d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 2284d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 2285d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 22860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (const VectorType *VT = Parent.getType()->getAs<VectorType>()) { 2287d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 22880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = VT->getElementType(); 22890c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else { 22900c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman const ComplexType *CT = Parent.getType()->getAs<ComplexType>(); 22910c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(CT && "Unexpected type"); 22920c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Kind = EK_ComplexElement; 22930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = CT->getElementType(); 2294d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 229520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 229620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2297dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 2298711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 2299711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 230020093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 230120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 230220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 2303711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 2304711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 2305711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 2306dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2307d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 230820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 230920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 231020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 231199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 231299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 2313f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: { 2314f85e193739c953358c865005855253af4f68a497John McCall ParmVarDecl *D = reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2315f85e193739c953358c865005855253af4f68a497John McCall return (D ? D->getDeclName() : DeclarationName()); 2316f85e193739c953358c865005855253af4f68a497John McCall } 2317a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 2318a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 231999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 232099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 232199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23224773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23234773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor return Capture.Var->getDeclName(); 23244773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor 232599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 232699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 232718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 232899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 232999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 2330059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2331d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2332d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23330c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2334310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 233599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 233699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 2337dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23387530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 233999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 234099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23417abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 23427abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 23437abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 23447abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 23457abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 23467abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 2347f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: 2348f85e193739c953358c865005855253af4f68a497John McCall return reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2349f85e193739c953358c865005855253af4f68a497John McCall 23507abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 23517abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 23527abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 23537abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 23547abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 2355059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2356d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2357d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23580c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2359310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23604773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23617abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 23627abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 2363dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23647530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 23657abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 23667abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 23673c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregorbool InitializedEntity::allowsNRVO() const { 23683c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor switch (getKind()) { 23693c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Result: 23703c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Exception: 23713c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return LocAndNRVO.NRVO; 2372dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23733c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Variable: 23743c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Parameter: 23753c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Member: 23763c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_New: 23773c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Temporary: 23783c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Base: 2379059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 23803c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_ArrayElement: 23813c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_VectorElement: 23820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2383310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23844773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23853c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor break; 23863c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor } 23873c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 23883c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return false; 23893c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor} 23903c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 239120093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 239220093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 239320093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 239420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 239520093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 239620093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 239720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 239820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 2399906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 240020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 240120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 240220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 2403523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 240420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 240520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 2406906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 240720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 2408d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 24098713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 241013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 241113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 241251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 241371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 241418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2415cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 2416569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 2417cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 24180f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 2419f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 2420f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 2421f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 24222b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: 242320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 2424dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 242520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 242620093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 242720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 242820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 242920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2430b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 24313b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return !Steps.empty() && Steps.back().Kind == SK_BindReference; 2432b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2433b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2434b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2435d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 2436b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2437dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2438b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2439b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2440b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2441b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2442b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2443b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2444b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2445b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2446b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2447b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2448b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2449429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 2450b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2451b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2452b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2453b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 245472a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 2455cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 2456cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 24578713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 245873076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 24595acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 24602b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: 246170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: 2462b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2463dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2464b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2465b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2466b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2467cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 2468b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2469b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2470dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 24717530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 2472b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2473b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2474d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2475d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2476d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2477d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 247822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 247922c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 248022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddAddressOverloadResolutionStep(FunctionDecl *Function, 248122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair Found, 248222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 248320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 248420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 248520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 248622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 24879aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 24886bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 248920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 249020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 249120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2492dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 24935baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 249420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 24955baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 24965baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: S.Kind = SK_CastDerivedToBaseRValue; break; 24975baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break; 24985baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break; 2499906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 250020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 250120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 250220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 250320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2504dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddReferenceBindingStep(QualType T, 250520093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 250620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 250720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 250820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 250920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 251020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 251120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2512523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2513523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2514523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2515523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2516523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2517523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2518523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 251922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 252022c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence::AddUserConversionStep(FunctionDecl *Function, 252122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair FoundDecl, 252222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 252322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 252420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 252520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 252603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 252722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 25289aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 25299aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 253020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 253120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 253220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 253320093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 25345baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 253520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 253638a4ffe5244e6be46f1b1f8394342a77836be776John McCall S.Kind = SK_QualificationConversionRValue; // work around a gcc warning 25375baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 25385baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: 2539906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionRValue; 2540906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 25415baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: 2542906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionXValue; 2543906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 25445baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: 2545906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionLValue; 2546906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2547906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 254820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 254920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 255020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 255120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 255220093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 255320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 255420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 255520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 255620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 255720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 255820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 255920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 256020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 256120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2562d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2563d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2564d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2565d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2566d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2567d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2568d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2569dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 257022c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 257122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddConstructorInitializationStep(CXXConstructorDecl *Constructor, 257222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara AccessSpecifier Access, 257322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 257410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates, 25756cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool FromInitList, bool AsInitList) { 257651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 25776cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl S.Kind = FromInitList && !AsInitList ? SK_ListConstructorCall 25786cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl : SK_ConstructorInitialization; 257951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 258022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 25819aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 25829aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 258351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 258451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 258551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 258671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 258771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 258871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 258971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 259071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 259171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 259271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 259318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 259418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 259518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 259618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 259718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 259818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 259918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2600cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2601cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2602cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2603cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2604cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2605cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2606cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2607569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregorvoid InitializationSequence::AddObjCObjectConversionStep(QualType T) { 2608569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Step S; 2609569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Kind = SK_ObjCObjectConversion; 2610569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Type = T; 2611569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Steps.push_back(S); 2612569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor} 2613569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 2614cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorvoid InitializationSequence::AddArrayInitStep(QualType T) { 2615cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Step S; 2616cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Kind = SK_ArrayInit; 2617cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Type = T; 2618cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Steps.push_back(S); 2619cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 2620cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 26210f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smithvoid InitializationSequence::AddParenthesizedArrayInitStep(QualType T) { 26220f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Step S; 26230f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Kind = SK_ParenthesizedArrayInit; 26240f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Type = T; 26250f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Steps.push_back(S); 26260f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith} 26270f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 2628f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddPassByIndirectCopyRestoreStep(QualType type, 2629f85e193739c953358c865005855253af4f68a497John McCall bool shouldCopy) { 2630f85e193739c953358c865005855253af4f68a497John McCall Step s; 2631f85e193739c953358c865005855253af4f68a497John McCall s.Kind = (shouldCopy ? SK_PassByIndirectCopyRestore 2632f85e193739c953358c865005855253af4f68a497John McCall : SK_PassByIndirectRestore); 2633f85e193739c953358c865005855253af4f68a497John McCall s.Type = type; 2634f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(s); 2635f85e193739c953358c865005855253af4f68a497John McCall} 2636f85e193739c953358c865005855253af4f68a497John McCall 2637f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddProduceObjCObjectStep(QualType T) { 2638f85e193739c953358c865005855253af4f68a497John McCall Step S; 2639f85e193739c953358c865005855253af4f68a497John McCall S.Kind = SK_ProduceObjCObject; 2640f85e193739c953358c865005855253af4f68a497John McCall S.Type = T; 2641f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(S); 2642f85e193739c953358c865005855253af4f68a497John McCall} 2643f85e193739c953358c865005855253af4f68a497John McCall 26442b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redlvoid InitializationSequence::AddStdInitializerListConstructionStep(QualType T) { 26452b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Step S; 26462b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Kind = SK_StdInitializerList; 26472b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Type = T; 26482b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Steps.push_back(S); 26492b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl} 26502b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 265113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlvoid InitializationSequence::RewrapReferenceInitList(QualType T, 265213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic) { 265313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl assert(Syntactic->getNumInits() == 1 && 265413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl "Can only rewrap trivial init lists."); 265513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Step S; 265613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_UnwrapInitList; 265713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = Syntactic->getInit(0)->getType(); 265813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.insert(Steps.begin(), S); 265913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 266013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_RewrapInitList; 266113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = T; 266213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.WrappingSyntacticList = Syntactic; 266313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.push_back(S); 266413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 266513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 2666dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 266720093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 26687491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(FailedSequence); 266920093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 267020093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 267120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 267220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 267320093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 267420093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 267520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 267620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2677f85e193739c953358c865005855253af4f68a497John McCallstatic void MaybeProduceObjCObject(Sema &S, 2678f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 2679f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity) { 26804e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().ObjCAutoRefCount) return; 2681f85e193739c953358c865005855253af4f68a497John McCall 2682f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a parameter, produce the value if it's marked 2683f85e193739c953358c865005855253af4f68a497John McCall /// __attribute__((ns_consumed)). 2684f85e193739c953358c865005855253af4f68a497John McCall if (Entity.getKind() == InitializedEntity::EK_Parameter) { 2685f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.isParameterConsumed()) 2686f85e193739c953358c865005855253af4f68a497John McCall return; 2687f85e193739c953358c865005855253af4f68a497John McCall 2688f85e193739c953358c865005855253af4f68a497John McCall assert(Entity.getType()->isObjCRetainableType() && 2689f85e193739c953358c865005855253af4f68a497John McCall "consuming an object of unretainable type?"); 2690f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2691f85e193739c953358c865005855253af4f68a497John McCall 2692f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a return value, if the return type is a 2693f85e193739c953358c865005855253af4f68a497John McCall /// retainable type, then returns need to immediately retain the 2694f85e193739c953358c865005855253af4f68a497John McCall /// object. If an autorelease is required, it will be done at the 2695f85e193739c953358c865005855253af4f68a497John McCall /// last instant. 2696f85e193739c953358c865005855253af4f68a497John McCall } else if (Entity.getKind() == InitializedEntity::EK_Result) { 2697f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.getType()->isObjCRetainableType()) 2698f85e193739c953358c865005855253af4f68a497John McCall return; 2699f85e193739c953358c865005855253af4f68a497John McCall 2700f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2701f85e193739c953358c865005855253af4f68a497John McCall } 2702f85e193739c953358c865005855253af4f68a497John McCall} 2703f85e193739c953358c865005855253af4f68a497John McCall 2704f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// \brief When initializing from init list via constructor, handle 2705f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// initialization of an object of type std::initializer_list<T>. 270610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// 2707f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// \return true if we have handled initialization of an object of type 2708f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// std::initializer_list<T>, false otherwise. 2709f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smithstatic bool TryInitializerListConstruction(Sema &S, 2710f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *List, 2711f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith QualType DestType, 2712f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence &Sequence) { 2713f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith QualType E; 2714f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (!S.isStdInitializerList(DestType, &E)) 27151d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith return false; 27161d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith 2717f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // Check that each individual element can be copy-constructed. But since we 2718f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // have no place to store further information, we'll recalculate everything 2719f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // later. 2720f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 2721f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith S.Context.getConstantArrayType(E, 2722f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 2723f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith List->getNumInits()), 2724f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith ArrayType::Normal, 0)); 2725f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializedEntity Element = InitializedEntity::InitializeElement(S.Context, 2726f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 0, HiddenArray); 2727f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith for (unsigned i = 0, n = List->getNumInits(); i < n; ++i) { 2728f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Element.setElementIndex(i); 2729f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (!S.CanPerformCopyInitialization(Element, List->getInit(i))) { 2730f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence.SetFailed( 2731f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence::FK_InitListElementCopyFailure); 273210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return true; 273310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 273410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 2735f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence.AddStdInitializerListConstructionStep(DestType); 2736f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return true; 273710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 273810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 273996715b288060c8e168cbca62f366c12e88c5483dSebastian Redlstatic OverloadingResult 274096715b288060c8e168cbca62f366c12e88c5483dSebastian RedlResolveConstructorOverload(Sema &S, SourceLocation DeclLoc, 274196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Expr **Args, unsigned NumArgs, 274296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet &CandidateSet, 274396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator Con, 274496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator ConEnd, 274596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet::iterator &Best, 274696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl bool CopyInitializing, bool AllowExplicit, 274751ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl bool OnlyListConstructors, bool InitListSyntax) { 274896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl CandidateSet.clear(); 274996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 275096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl for (; Con != ConEnd; ++Con) { 275196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl NamedDecl *D = *Con; 275296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 275396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl bool SuppressUserConversions = false; 275496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 275596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Find the constructor (which may be a template). 275696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl CXXConstructorDecl *Constructor = 0; 275796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 275896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (ConstructorTmpl) 275996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Constructor = cast<CXXConstructorDecl>( 276096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl ConstructorTmpl->getTemplatedDecl()); 276196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl else { 276296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Constructor = cast<CXXConstructorDecl>(D); 276396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 276496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // If we're performing copy initialization using a copy constructor, we 276551ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl // suppress user-defined conversions on the arguments. We do the same for 276651ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl // move constructors. 276751ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl if ((CopyInitializing || (InitListSyntax && NumArgs == 1)) && 276851ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl Constructor->isCopyOrMoveConstructor()) 276996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl SuppressUserConversions = true; 277096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 277196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 277296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (!Constructor->isInvalidDecl() && 277396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl (AllowExplicit || !Constructor->isExplicit()) && 27746cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl (!OnlyListConstructors || S.isInitListConstructor(Constructor))) { 277596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (ConstructorTmpl) 277696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 277796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl /*ExplicitArgs*/ 0, 277851ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl llvm::makeArrayRef(Args, NumArgs), 277951ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl CandidateSet, SuppressUserConversions); 2780ed878af7914df535b32d64f555fa118413186672Douglas Gregor else { 2781ed878af7914df535b32d64f555fa118413186672Douglas Gregor // C++ [over.match.copy]p1: 2782ed878af7914df535b32d64f555fa118413186672Douglas Gregor // - When initializing a temporary to be bound to the first parameter 2783ed878af7914df535b32d64f555fa118413186672Douglas Gregor // of a constructor that takes a reference to possibly cv-qualified 2784ed878af7914df535b32d64f555fa118413186672Douglas Gregor // T as its first argument, called with a single argument in the 2785ed878af7914df535b32d64f555fa118413186672Douglas Gregor // context of direct-initialization, explicit conversion functions 2786ed878af7914df535b32d64f555fa118413186672Douglas Gregor // are also considered. 2787ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConv = AllowExplicit && !CopyInitializing && 2788ed878af7914df535b32d64f555fa118413186672Douglas Gregor NumArgs == 1 && 2789ed878af7914df535b32d64f555fa118413186672Douglas Gregor Constructor->isCopyOrMoveConstructor(); 279096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl S.AddOverloadCandidate(Constructor, FoundDecl, 279113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs), CandidateSet, 2792ed878af7914df535b32d64f555fa118413186672Douglas Gregor SuppressUserConversions, 2793ed878af7914df535b32d64f555fa118413186672Douglas Gregor /*PartialOverloading=*/false, 2794ed878af7914df535b32d64f555fa118413186672Douglas Gregor /*AllowExplicit=*/AllowExplicitConv); 2795ed878af7914df535b32d64f555fa118413186672Douglas Gregor } 279696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 279796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 279896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 279996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Perform overload resolution and return the result. 280096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl return CandidateSet.BestViableFunction(S, DeclLoc, Best); 280196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl} 280296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 280310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 280410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// enumerates the constructors of the initialized entity and performs overload 280510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// resolution to select the best. 280608ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl/// If InitListSyntax is true, this is list-initialization of a non-aggregate 280710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// class type. 280810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic void TryConstructorInitialization(Sema &S, 280910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 281010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 281110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Args, unsigned NumArgs, 281210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl QualType DestType, 281310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitializationSequence &Sequence, 281408ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl bool InitListSyntax = false) { 281508ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl assert((!InitListSyntax || (NumArgs == 1 && isa<InitListExpr>(Args[0]))) && 281608ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl "InitListSyntax must come with a single initializer list argument."); 281708ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl 281810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Check constructor arguments for self reference. 281910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (DeclaratorDecl *DD = Entity.getDecl()) 282010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Parameters arguments are occassionially constructed with itself, 282110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // for instance, in recursive functions. Skip them. 282210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!isa<ParmVarDecl>(DD)) 282310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl for (unsigned i = 0; i < NumArgs; ++i) 282410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckSelfReference(DD, Args[i]); 282510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 282610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // The type we're constructing needs to be complete. 282710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 282869a30b838c723cb1850de55cfa48a402cfeeb6e0Douglas Gregor Sequence.setIncompleteTypeFailure(DestType); 282996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl return; 283010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 283110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 283210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const RecordType *DestRecordType = DestType->getAs<RecordType>(); 283310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl assert(DestRecordType && "Constructor initialization requires record type"); 283410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *DestRecordDecl 283510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXRecordDecl>(DestRecordType->getDecl()); 283610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 283796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Build the candidate set directly in the initialization sequence 283896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // structure, so that it will persist if we fail. 283996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 284096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 284196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Determine whether we are allowed to call explicit constructors or 284296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // explicit conversion operators. 284370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl bool AllowExplicit = Kind.AllowExplicit() || InitListSyntax; 28446cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool CopyInitialization = Kind.getKind() == InitializationKind::IK_Copy; 284508ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl 284610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - Otherwise, if T is a class type, constructors are considered. The 284710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // applicable constructors are enumerated, and the best one is chosen 284810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // through overload resolution. 284996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator ConStart, ConEnd; 285096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl llvm::tie(ConStart, ConEnd) = S.LookupConstructors(DestRecordDecl); 285110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 28526cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl OverloadingResult Result = OR_No_Viable_Function; 285310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet::iterator Best; 28546cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool AsInitializerList = false; 28556cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 28566cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // C++11 [over.match.list]p1: 28576cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // When objects of non-aggregate type T are list-initialized, overload 28586cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // resolution selects the constructor in two phases: 28596cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // - Initially, the candidate functions are the initializer-list 28606cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // constructors of the class T and the argument list consists of the 28616cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // initializer list as a single argument. 28626cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (InitListSyntax) { 2863f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *ILE = cast<InitListExpr>(Args[0]); 28646cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl AsInitializerList = true; 2865f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 2866f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // If the initializer list has no elements and T has a default constructor, 2867f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // the first phase is omitted. 2868f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (ILE->getNumInits() != 0 || 2869f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith (!DestRecordDecl->hasDeclaredDefaultConstructor() && 2870f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith !DestRecordDecl->needsImplicitDefaultConstructor())) 2871f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, NumArgs, 2872f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith CandidateSet, ConStart, ConEnd, Best, 2873f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith CopyInitialization, AllowExplicit, 2874f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith /*OnlyListConstructor=*/true, 2875f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListSyntax); 28766cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 28776cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // Time to unwrap the init list. 28786cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Args = ILE->getInits(); 28796cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl NumArgs = ILE->getNumInits(); 28806cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl } 28816cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 28826cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // C++11 [over.match.list]p1: 28836cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // - If no viable initializer-list constructor is found, overload resolution 28846cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // is performed again, where the candidate functions are all the 2885f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // constructors of the class T and the argument list consists of the 28866cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // elements of the initializer list. 28876cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (Result == OR_No_Viable_Function) { 28886cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl AsInitializerList = false; 28896cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, NumArgs, 28906cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CandidateSet, ConStart, ConEnd, Best, 28916cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CopyInitialization, AllowExplicit, 289251ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl /*OnlyListConstructors=*/false, 289351ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl InitListSyntax); 28946cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl } 28956cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (Result) { 289608ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl Sequence.SetOverloadFailure(InitListSyntax ? 2897cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ListConstructorOverloadFailed : 2898cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ConstructorOverloadFailed, 289910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Result); 290010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 290110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 290210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 2903f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // C++11 [dcl.init]p6: 290410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If a program calls for the default initialization of an object 290510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // of a const-qualified type T, T shall be a class type with a 290610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // user-provided default constructor. 290710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default && 290810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Entity.getType().isConstQualified() && 290910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl cast<CXXConstructorDecl>(Best->Function)->isImplicit()) { 291010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 291110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 291210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 291310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 291470e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // C++11 [over.match.list]p1: 291570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // In copy-list-initialization, if an explicit constructor is chosen, the 291670e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // initializer is ill-formed. 291770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 291870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl if (InitListSyntax && !Kind.AllowExplicit() && CtorDecl->isExplicit()) { 291970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_ExplicitConstructor); 292070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl return; 292170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl } 292270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 292310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Add the constructor initialization step. Any cv-qualification conversion is 292410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // subsumed by the initialization. 292510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = (CandidateSet.size() > 1); 292610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.AddConstructorInitializationStep(CtorDecl, 292710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Best->FoundDecl.getAccess(), 292810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, HadMultipleCandidates, 29296cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl InitListSyntax, AsInitializerList); 293010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 293110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 293213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic bool 293313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian RedlResolveOverloadedFunctionForReferenceBinding(Sema &S, 293413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 293513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &SourceType, 293613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &UnqualifiedSourceType, 293713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType UnqualifiedTargetType, 293813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 293913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (S.Context.getCanonicalType(UnqualifiedSourceType) == 294013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Context.OverloadTy) { 294113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl DeclAccessPair Found; 294213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool HadMultipleCandidates = false; 294313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (FunctionDecl *Fn 294413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.ResolveAddressOfOverloadedFunction(Initializer, 294513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedTargetType, 294613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl false, Found, 294713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl &HadMultipleCandidates)) { 294813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddAddressOverloadResolutionStep(Fn, Found, 294913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl HadMultipleCandidates); 295013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceType = Fn->getType(); 295113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedSourceType = SourceType.getUnqualifiedType(); 295213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } else if (!UnqualifiedTargetType->isRecordType()) { 295313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 295413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return true; 295513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 295613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 295713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return false; 295813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 295913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 296013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 296113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 296213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 296313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 296413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 296513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 296613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 296713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 296813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 296913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 2970f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smithstatic void TryValueInitialization(Sema &S, 2971f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith const InitializedEntity &Entity, 2972f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith const InitializationKind &Kind, 2973f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence &Sequence, 2974f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *InitList = 0); 2975f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 297613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryListInitialization(Sema &S, 297713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 297813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 297913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 298013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 298113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 298213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Attempt list initialization of a reference. 298313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceListInitialization(Sema &S, 298413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 298513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 298613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 298713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) 298813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl{ 298913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // First, catch C++03 where this isn't possible. 29904e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x) { 299113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 299213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 299313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 299413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 299513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 299613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 299713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals; 299813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 299913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 300013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Reference initialization via an initializer list works thus: 300113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If the initializer list consists of a single element that is 300213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // reference-related to the referenced type, bind directly to that element 300313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // (possibly creating temporaries). 300413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Otherwise, initialize a temporary with the initializer list and 300513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // bind to that. 300613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (InitList->getNumInits() == 1) { 300713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer = InitList->getInit(0); 300813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2 = Initializer->getType(); 300913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals; 301013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 301113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 301213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If this fails, creating a temporary wouldn't work either. 301313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 301413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 301513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 301613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 301713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 301813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool dummy1, dummy2, dummy3; 301913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sema::ReferenceCompareResult RefRelationship 302013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, dummy1, 302113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl dummy2, dummy3); 302213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (RefRelationship >= Sema::Ref_Related) { 302313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Try to bind the reference here. 302413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 302513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 302613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) 302713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.RewrapReferenceInitList(cv1T1, InitList); 302813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 302913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 303013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 303113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 303213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Not reference-related. Create a temporary and bind to that. 303313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 303413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 303513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryListInitialization(S, TempEntity, Kind, InitList, Sequence); 303613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) { 303713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (DestType->isRValueReferenceType() || 303813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (T1Quals.hasConst() && !T1Quals.hasVolatile())) 303913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 304013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else 304113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed( 304213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 304313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 304413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 304513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 304612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola/// \brief Attempt list initialization (C++0x [dcl.init.list]) 304712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindolastatic void TryListInitialization(Sema &S, 304812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializedEntity &Entity, 304912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializationKind &Kind, 305012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitListExpr *InitList, 305112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitializationSequence &Sequence) { 305212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 305312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 305414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // C++ doesn't allow scalar initialization with more than one argument. 305514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // But C99 complex numbers are scalars and it makes sense there. 30564e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus && DestType->isScalarType() && 305714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DestType->isAnyComplexType() && InitList->getNumInits() > 1) { 305814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 305914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 306014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 306114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DestType->isReferenceType()) { 306213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceListInitialization(S, Entity, Kind, InitList, Sequence); 306312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola return; 306414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 3065d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (DestType->isRecordType()) { 3066d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (S.RequireCompleteType(InitList->getLocStart(), DestType, 0)) { 306769a30b838c723cb1850de55cfa48a402cfeeb6e0Douglas Gregor Sequence.setIncompleteTypeFailure(DestType); 3068d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl return; 3069d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } 3070d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl 3071f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // C++11 [dcl.init.list]p3: 3072f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - If T is an aggregate, aggregate initialization is performed. 3073d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (!DestType->isAggregateType()) { 30744e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus0x) { 3075f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - Otherwise, if the initializer list has no elements and T is a 3076f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // class type with a default constructor, the object is 3077f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // value-initialized. 3078f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (InitList->getNumInits() == 0) { 3079f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith CXXRecordDecl *RD = DestType->getAsCXXRecordDecl(); 3080f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (RD->hasDeclaredDefaultConstructor() || 3081f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith RD->needsImplicitDefaultConstructor()) { 3082f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith TryValueInitialization(S, Entity, Kind, Sequence, InitList); 3083f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return; 3084f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith } 3085f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith } 3086f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3087f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - Otherwise, if T is a specialization of std::initializer_list<E>, 3088f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // an initializer_list object constructed [...] 3089f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (TryInitializerListConstruction(S, InitList, DestType, Sequence)) 3090f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return; 3091f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3092f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - Otherwise, if T is a class type, constructors are considered. 3093d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Expr *Arg = InitList; 3094f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith TryConstructorInitialization(S, Entity, Kind, &Arg, 1, DestType, 3095f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence, /*InitListSyntax*/true); 3096d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } else 3097d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Sequence.SetFailed( 3098d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl InitializationSequence::FK_InitListBadDestinationType); 3099d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl return; 3100d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } 310114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 310214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 310314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker CheckInitList(S, Entity, InitList, 3104c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/true, 3105168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 31064e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 310714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (CheckInitList.HadError()) { 310814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ListInitializationFailed); 310914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 311012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola } 311112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 311214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Add the list initialization step with the built init list. 311312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Sequence.AddListInitializationStep(DestType); 311412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola} 311520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 311620093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 311720093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 311820093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 311920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 312020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 3121ed878af7914df535b32d64f555fa118413186672Douglas Gregor Expr *Initializer, 3122ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowRValues, 312320093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3124d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 312520093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 312620093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 312720093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 312820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 312920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 313020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 3131569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion; 3132f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion; 3133dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 3134569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T1, T2, DerivedToBase, 3135f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, 3136f85e193739c953358c865005855253af4f68a497John McCall ObjCLifetimeConversion) && 313720093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 313860cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 3139569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor (void)ObjCConversion; 3140f85e193739c953358c865005855253af4f68a497John McCall (void)ObjCLifetimeConversion; 3141f85e193739c953358c865005855253af4f68a497John McCall 314220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 314320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 314420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 314520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 314620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 314720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 314820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 3149168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3150ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConvs = Kind.allowExplicitConversionFunctions(); 3151ed878af7914df535b32d64f555fa118413186672Douglas Gregor 315220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 31536b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && 31546b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T1, 0)) { 315520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 315620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 315720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 3158572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall 315920093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3160e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(T1RecordDecl); 316120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 31629aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 31639aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 31649aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 316520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 316620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 31679aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 316820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 316920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 317020093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 317120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 31729aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 3173dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 317420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 317520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 317620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 31779aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 317886820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 317913a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 3180b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 318120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 31829aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 318313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 3184b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 318520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3186dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 318720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3188572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) 3189572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3190dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 31916b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor const RecordType *T2RecordType = 0; 31926b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if ((T2RecordType = T2->getAs<RecordType>()) && 31936b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T2, 0)) { 319420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 319520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 319620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 319720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3198eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 319920093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 3200eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3201eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 320220093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 320320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 320420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 320520093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3206dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 320720093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 320820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 320920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 321020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 321120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32124680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Conv = cast<CXXConversionDecl>(D); 3213dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 321420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 321520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 321620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 3217dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Do we need to make sure that we only consider conversion 3218dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // candidates with reference-compatible results? That might be needed to 321920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 3220ed878af7914df535b32d64f555fa118413186672Douglas Gregor if ((AllowExplicitConvs || !Conv->isExplicit()) && 322120093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 322220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 32239aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 322486820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 3225564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor DestType, CandidateSet); 322620093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32279aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 3228564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor Initializer, DestType, CandidateSet); 322920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 323020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 323120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3232572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) 3233572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3234dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 323520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 323620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3237dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 323820093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 3239dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (OverloadingResult Result 32408fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) 324120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 324203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 324320093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 324403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 324525ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // This is the overload that will actually be used for the initialization, so 324625ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // mark it as used. 32475f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(DeclLoc, Function); 324825ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 324903981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 325020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 325120093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 325220093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 325320093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 325403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 325503981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 325622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 32579aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 325822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara T2.getNonLValueExprType(S.Context), 325922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 326003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 3261dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Determine whether we need to perform derived-to-base or 326203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 32635baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = VK_RValue; 3264906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl if (T2->isLValueReferenceType()) 32655baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = VK_LValue; 3266906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl else if (const RValueReferenceType *RRef = T2->getAs<RValueReferenceType>()) 32675baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = RRef->getPointeeType()->isFunctionType() ? VK_LValue : VK_XValue; 3268906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 326920093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 3270569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool NewObjCConversion = false; 3271f85e193739c953358c865005855253af4f68a497John McCall bool NewObjCLifetimeConversion = false; 327220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 3273dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi = S.CompareReferenceRelationship(DeclLoc, T1, 32746398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context), 3275f85e193739c953358c865005855253af4f68a497John McCall NewDerivedToBase, NewObjCConversion, 3276f85e193739c953358c865005855253af4f68a497John McCall NewObjCLifetimeConversion); 3277a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 3278a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 3279a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 3280a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 3281a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 3282a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 3283a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 3284a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 3285a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 3286a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 3287a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 328820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 328920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 3290dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi T2.getNonReferenceType().getQualifiers()), 32915baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK); 3292569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (NewObjCConversion) 3293569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3294569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, 3295569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T2.getNonReferenceType().getQualifiers())); 3296569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 329720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 32985baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK); 3299dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 330020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 330120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 330220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 3303dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 330483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 330583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 330683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr); 330783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 3308dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Attempt reference initialization (C++0x [dcl.init.ref]) 3309dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryReferenceInitialization(Sema &S, 331020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 331120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 331220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 331320093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3314d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 331520093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 33165535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 33175535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 331820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 33195535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 33205535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 33214680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 332220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 332320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 332420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 332513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 332613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 332713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 332813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 332913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Delegate everything else to a subfunction. 333013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 333113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 333213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 33334680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 333413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Reference initialization without resolving overloaded functions. 333513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 333613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 333713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 333813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 333913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 334013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 334113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 334213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 334313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 334413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 334513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 334620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 334720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 334820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 334920093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 3350569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion = false; 3351f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion = false; 33524680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Expr::Classification InitCategory = Initializer->Classify(S.Context); 335320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 3354569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase, 3355f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, ObjCLifetimeConversion); 33564680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 335720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 3358dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // A reference to type "cv1 T1" is initialized by an expression of type 335920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 336020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3361dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the reference is an lvalue reference and the initializer 336220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 33634680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // Note the analogous bullet points for rvlaue refs to functions. Because 33644680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // there are no function rvalues in C++, rvalue refs to functions are treated 33654680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // like lvalue refs. 336620093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 33674680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl bool T1Function = T1->isFunctionType(); 33684680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (isLValueRef || T1Function) { 3369dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (InitCategory.isLValue() && 337014d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3371dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 337214d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related))) { 3373dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - is an lvalue (but is not a bit-field), and "cv1 T1" is 337420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 337520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3376dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 337720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 3378de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 3379de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 3380de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 338120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 338220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 3383dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Context.getQualifiedType(T1, T2Quals), 33845baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue); 3385569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 3386569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3387569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3388569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 33895535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 33905baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK_LValue); 3391de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 3392093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 3393de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 339420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 339520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3396dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3397dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3398dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3399dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 3400dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // with "cv3 T3" (this conversion is selected by enumerating the 340120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 340220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 34034680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // If we have an rvalue ref to function type here, the rhs must be 34044680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // an rvalue. 34054680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && 34064680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isLValueRef || InitCategory.isRValue())) { 3407dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 340820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 34094680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl /*AllowRValues=*/isRValueRef, 341020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 341120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 341220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 34131d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 34141d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 34151d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 34161d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 34171d31833450e6d2947a33cb0840d87661d92eec07John McCall } 341820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 341920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34204680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3421dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, the reference shall be an lvalue reference to a 342220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 342369d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // shall be an rvalue reference. 3424b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor if (isLValueRef && !(T1Quals.hasConst() && !T1Quals.hasVolatile())) { 34253afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 34263afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 34273afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 342820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 342920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 343020093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3431b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor else 34324680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Sequence.SetFailed(InitCategory.isLValue() 343320093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 343420093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 343520093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 343620093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 34374680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 343820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 343920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34404680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3441c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - If the initializer expression 3442c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - is an xvalue, class prvalue, array prvalue, or function lvalue and 3443c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // "cv1 T1" is reference-compatible with "cv2 T2" 3444c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // Note: functions are handled below. 3445c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (!T1Function && 344614d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3447dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 344814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related)) && 3449c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isXValue() || 3450c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isRecordType()) || 3451c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isArrayType()))) { 3452c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ExprValueKind ValueKind = InitCategory.isXValue()? VK_XValue : VK_RValue; 3453c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (InitCategory.isPRValue() && T2->isRecordType()) { 3454523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 3455523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 3456523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 3457523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 3458523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 3459523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 3460523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 3461523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 3462523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 34634e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x && !S.getLangOpts().MicrosoftExt) 3464523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 34654e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (S.getLangOpts().CPlusPlus0x) 346683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CheckCXX98CompatAccessibleCopy(S, Entity, Initializer); 346720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3468dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3469c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (DerivedToBase) 3470c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddDerivedToBaseCastStep(S.Context.getQualifiedType(T1, T2Quals), 3471c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ValueKind); 3472c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor else if (ObjCConversion) 3473c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddObjCObjectConversionStep( 3474c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3475dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3476c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T1Quals != T2Quals) 3477c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddQualificationConversionStep(cv1T1, ValueKind); 3478dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Sequence.AddReferenceBindingStep(cv1T1, 347965bfd682010f599a9a04fc7523e95e28c27508baPeter Collingbourne /*bindingTemporary=*/InitCategory.isPRValue()); 3480dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return; 3481c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor } 3482dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3483dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3484dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3485c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // xvalue, class prvalue, or function lvalue of type "cv3 T3", 3486c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // where "cv1 T1" is reference-compatible with "cv3 T3", 3487c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T2->isRecordType()) { 348820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 348920093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 349020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 349120093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 349220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 349320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 349420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 349520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 349620093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3497dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 349820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 349920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3500dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 350120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 350220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 350320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 35040099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi 35050099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // - Otherwise, a temporary of type "cv1 T1" is created and initialized 350620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 3507dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy initialization (8.5). The reference is then bound to the 350820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 3509369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 351020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 351120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 3512168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3513369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3514369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 3515369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3516f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 3517f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, TempEntity.getType(), 3518369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ false, 3519369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicit, 352014d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*FIXME:InOverloadResolution=*/false, 3521f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 3522f85e193739c953358c865005855253af4f68a497John McCall /*AllowObjCWritebackConversion=*/false); 3523f85e193739c953358c865005855253af4f68a497John McCall 3524f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isBad()) { 352520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 352620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 352720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 352820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 352918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 353018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 353118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 353218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 35333afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 35343afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 353518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 353618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 353720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 3538f85e193739c953358c865005855253af4f68a497John McCall } else { 3539f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, TempEntity.getType()); 354020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 354120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 354220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 354320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 354420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 35455535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 35465535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 3547dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship == Sema::Ref_Related && 35485535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 354920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 355020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 355120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 355220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3553dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // [...] If T1 is reference-related to T2 and the reference is an rvalue 3554b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor // reference, the initializer expression shall not be an lvalue. 3555dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship >= Sema::Ref_Related && !isLValueRef && 3556b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitCategory.isLValue()) { 3557b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor Sequence.SetFailed( 3558b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 3559b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor return; 3560b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor } 3561dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 356220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 356320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 356420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 356520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 356620093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 3567dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// (C++ [dcl.init.string], C99 6.7.8). 3568dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryStringLiteralInitialization(Sema &S, 356920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 357020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 357120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 357220093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3573d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 357420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 357520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 357671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 3577dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryValueInitialization(Sema &S, 357871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 357971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 3580f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence &Sequence, 3581f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *InitList) { 3582f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith assert((!InitList || InitList->getNumInits() == 0) && 3583f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith "Shouldn't use value-init for non-empty init lists"); 3584f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 35851d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++98 [dcl.init]p5, C++11 [dcl.init]p7: 358671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 358771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 3588d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 3589dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 359071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 35911d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith T = S.Context.getBaseElementType(T); 3592dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 359371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 359471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 3595f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith bool NeedZeroInitialization = true; 35964e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x) { 3597f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // C++98: 3598f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // -- if T is a class type (clause 9) with a user-declared constructor 3599f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // (12.1), then the default constructor for T is called (and the 3600f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // initialization is ill-formed if T has no accessible default 3601f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // constructor); 36021d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (ClassDecl->hasUserDeclaredConstructor()) 3603f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith NeedZeroInitialization = false; 36041d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith } else { 36051d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++11: 36061d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // -- if T is a class type (clause 9) with either no default constructor 36071d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // (12.1 [class.ctor]) or a default constructor that is user-provided 36081d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // or deleted, then the object is default-initialized; 36091d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith CXXConstructorDecl *CD = S.LookupDefaultConstructor(ClassDecl); 36101d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (!CD || !CD->getCanonicalDecl()->isDefaulted() || CD->isDeleted()) 3611f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith NeedZeroInitialization = false; 36121d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith } 3613dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36141d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // -- if T is a (possibly cv-qualified) non-union class type without a 36151d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // user-provided or deleted default constructor, then the object is 36161d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // zero-initialized and, if T has a non-trivial default constructor, 36171d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // default-initialized; 3618d079abfb5eefaf7da232e39a6564f561402cf4feRichard Smith // FIXME: The 'non-union' here is a defect (not yet assigned an issue 3619d079abfb5eefaf7da232e39a6564f561402cf4feRichard Smith // number). Update the quotation when the defect is resolved. 3620f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (NeedZeroInitialization) 3621f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence.AddZeroInitializationStep(Entity.getType()); 3622f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3623f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // If this is list-value-initialization, pass the empty init list on when 3624f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // building the constructor call. This affects the semantics of a few 3625f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // things (such as whether an explicit default constructor can be called). 3626f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Expr *InitListAsExpr = InitList; 3627f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Expr **Args = InitList ? &InitListAsExpr : 0; 3628f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith unsigned NumArgs = InitList ? 1 : 0; 3629f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith bool InitListSyntax = InitList; 3630f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3631f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, T, 3632f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence, InitListSyntax); 363371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 363471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 363571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 3636d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 363771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 363871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 363999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 364099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 364199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 364299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 364399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 364499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 3645dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 364699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 364799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 364899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 3649f85e193739c953358c865005855253af4f68a497John McCall QualType DestType = S.Context.getBaseElementType(Entity.getType()); 3650f85e193739c953358c865005855253af4f68a497John McCall 365199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 365299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 365399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 36544e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (DestType->isRecordType() && S.getLangOpts().CPlusPlus) { 36554e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, Sequence); 36564e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth return; 365799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 3658dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 365999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 3660dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 366199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 3662dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // a const-qualified type T, T shall be a class type with a user-provided 366399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 36644e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (DestType.isConstQualified() && S.getLangOpts().CPlusPlus) { 366599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 3666f85e193739c953358c865005855253af4f68a497John McCall return; 3667f85e193739c953358c865005855253af4f68a497John McCall } 3668f85e193739c953358c865005855253af4f68a497John McCall 3669f85e193739c953358c865005855253af4f68a497John McCall // If the destination type has a lifetime property, zero-initialize it. 3670f85e193739c953358c865005855253af4f68a497John McCall if (DestType.getQualifiers().hasObjCLifetime()) { 3671f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddZeroInitializationStep(Entity.getType()); 3672f85e193739c953358c865005855253af4f68a497John McCall return; 3673f85e193739c953358c865005855253af4f68a497John McCall } 367499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 367599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 367620093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 367720093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 367820093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 3679dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryUserDefinedConversion(Sema &S, 368020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 368120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 368220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 368320093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3684d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 36854a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 36864a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 36874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 36884a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 3689dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36904a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 36914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 36924a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 36934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 3694dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 36964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 3697168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3698dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 37004a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 37014a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 37024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 37034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 3704dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3705087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Try to complete the type we're converting to. 3706dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (!S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 3707087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3708e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 3709087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Con != ConEnd; ++Con) { 3710087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor NamedDecl *D = *Con; 3711087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 3712dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3713087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Find the constructor (which may be a template). 3714087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor CXXConstructorDecl *Constructor = 0; 3715087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor FunctionTemplateDecl *ConstructorTmpl 3716087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor = dyn_cast<FunctionTemplateDecl>(D); 37174a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 3718087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>( 3719087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 37204712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor else 3721087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>(D); 3722dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3723087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!Constructor->isInvalidDecl() && 3724087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 3725087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (ConstructorTmpl) 3726087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 3727087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor /*ExplicitArgs*/ 0, 372813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 37294712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3730087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor else 3731087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 373213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 37334712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3734087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 3735dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 3736087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 37374a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3738cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3739cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 3740cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 37414a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 37424a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 37434a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 3744cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 374533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 374633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 374733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 374833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 374933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 3750dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3751eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 375233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 3753eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3754dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi E = Conversions->end(); 375533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 375633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 375733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 375833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 375933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3760dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 376133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 376233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 37634a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 376433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 37654a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 376632daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 3767dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 376833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 376933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 37709aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 377186820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 377233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 377333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 37749aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 377586820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 377633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 37774a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37784a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37794a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3780dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3781dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 37824a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 37831d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 37848fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) { 37854a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 3786dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializationSequence::FK_UserConversionOverloadFailed, 37874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 37884a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 37894a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37901d31833450e6d2947a33cb0840d87661d92eec07John McCall 37914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 37925f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(DeclLoc, Function); 379322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 3794dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 37964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 3797f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // subsumed by the initialization. Per DR5, the created temporary is of the 3798f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // cv-unqualified type of the destination. 3799f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith Sequence.AddUserConversionStep(Function, Best->FoundDecl, 3800f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith DestType.getUnqualifiedType(), 380122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 38034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 38044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 38054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 38065291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor QualType ConvType = Function->getCallResultType(); 38073fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 3808f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // If we're converting to a class type, there may be an copy of 38093fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 38103fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 38113fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 38123fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 38133fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 381422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType, 381522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38163fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 38173fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 38184a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 381922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType, 382022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 3821dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38223fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 38233fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 38244a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 38254a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 38264a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 38271d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 38284a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 38294a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 38304a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 383120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 383220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3833f85e193739c953358c865005855253af4f68a497John McCall/// The non-zero enum values here are indexes into diagnostic alternatives. 3834f85e193739c953358c865005855253af4f68a497John McCallenum InvalidICRKind { IIK_okay, IIK_nonlocal, IIK_nonscalar }; 3835f85e193739c953358c865005855253af4f68a497John McCall 3836f85e193739c953358c865005855253af4f68a497John McCall/// Determines whether this expression is an acceptable ICR source. 3837c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCallstatic InvalidICRKind isInvalidICRSource(ASTContext &C, Expr *e, 3838c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall bool isAddressOf) { 3839f85e193739c953358c865005855253af4f68a497John McCall // Skip parens. 3840f85e193739c953358c865005855253af4f68a497John McCall e = e->IgnoreParens(); 3841f85e193739c953358c865005855253af4f68a497John McCall 3842f85e193739c953358c865005855253af4f68a497John McCall // Skip address-of nodes. 3843f85e193739c953358c865005855253af4f68a497John McCall if (UnaryOperator *op = dyn_cast<UnaryOperator>(e)) { 3844f85e193739c953358c865005855253af4f68a497John McCall if (op->getOpcode() == UO_AddrOf) 3845c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, op->getSubExpr(), /*addressof*/ true); 3846f85e193739c953358c865005855253af4f68a497John McCall 3847f85e193739c953358c865005855253af4f68a497John McCall // Skip certain casts. 3848c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } else if (CastExpr *ce = dyn_cast<CastExpr>(e)) { 3849c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall switch (ce->getCastKind()) { 3850f85e193739c953358c865005855253af4f68a497John McCall case CK_Dependent: 3851f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 3852f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueBitCast: 3853f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 3854c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, ce->getSubExpr(), isAddressOf); 3855f85e193739c953358c865005855253af4f68a497John McCall 3856f85e193739c953358c865005855253af4f68a497John McCall case CK_ArrayToPointerDecay: 3857f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3858f85e193739c953358c865005855253af4f68a497John McCall 3859f85e193739c953358c865005855253af4f68a497John McCall case CK_NullToPointer: 3860f85e193739c953358c865005855253af4f68a497John McCall return IIK_okay; 3861f85e193739c953358c865005855253af4f68a497John McCall 3862f85e193739c953358c865005855253af4f68a497John McCall default: 3863f85e193739c953358c865005855253af4f68a497John McCall break; 3864f85e193739c953358c865005855253af4f68a497John McCall } 3865f85e193739c953358c865005855253af4f68a497John McCall 3866f85e193739c953358c865005855253af4f68a497John McCall // If we have a declaration reference, it had better be a local variable. 3867f4b88a45902af1802a1cb42ba48b1c474474f228John McCall } else if (isa<DeclRefExpr>(e)) { 3868c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (!isAddressOf) return IIK_nonlocal; 3869c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3870f4b88a45902af1802a1cb42ba48b1c474474f228John McCall VarDecl *var = dyn_cast<VarDecl>(cast<DeclRefExpr>(e)->getDecl()); 3871f4b88a45902af1802a1cb42ba48b1c474474f228John McCall if (!var) return IIK_nonlocal; 3872c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3873c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return (var->hasLocalStorage() ? IIK_okay : IIK_nonlocal); 3874f85e193739c953358c865005855253af4f68a497John McCall 3875f85e193739c953358c865005855253af4f68a497John McCall // If we have a conditional operator, check both sides. 3876f85e193739c953358c865005855253af4f68a497John McCall } else if (ConditionalOperator *cond = dyn_cast<ConditionalOperator>(e)) { 3877c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (InvalidICRKind iik = isInvalidICRSource(C, cond->getLHS(), isAddressOf)) 3878f85e193739c953358c865005855253af4f68a497John McCall return iik; 3879f85e193739c953358c865005855253af4f68a497John McCall 3880c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, cond->getRHS(), isAddressOf); 3881f85e193739c953358c865005855253af4f68a497John McCall 3882f85e193739c953358c865005855253af4f68a497John McCall // These are never scalar. 3883f85e193739c953358c865005855253af4f68a497John McCall } else if (isa<ArraySubscriptExpr>(e)) { 3884f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3885f85e193739c953358c865005855253af4f68a497John McCall 3886f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, it needs to be a null pointer constant. 3887f85e193739c953358c865005855253af4f68a497John McCall } else { 3888f85e193739c953358c865005855253af4f68a497John McCall return (e->isNullPointerConstant(C, Expr::NPC_ValueDependentIsNull) 3889f85e193739c953358c865005855253af4f68a497John McCall ? IIK_okay : IIK_nonlocal); 3890f85e193739c953358c865005855253af4f68a497John McCall } 3891f85e193739c953358c865005855253af4f68a497John McCall 3892f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonlocal; 3893f85e193739c953358c865005855253af4f68a497John McCall} 3894f85e193739c953358c865005855253af4f68a497John McCall 3895f85e193739c953358c865005855253af4f68a497John McCall/// Check whether the given expression is a valid operand for an 3896f85e193739c953358c865005855253af4f68a497John McCall/// indirect copy/restore. 3897f85e193739c953358c865005855253af4f68a497John McCallstatic void checkIndirectCopyRestoreSource(Sema &S, Expr *src) { 3898f85e193739c953358c865005855253af4f68a497John McCall assert(src->isRValue()); 3899f85e193739c953358c865005855253af4f68a497John McCall 3900c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall InvalidICRKind iik = isInvalidICRSource(S.Context, src, false); 3901f85e193739c953358c865005855253af4f68a497John McCall if (iik == IIK_okay) return; 3902f85e193739c953358c865005855253af4f68a497John McCall 3903f85e193739c953358c865005855253af4f68a497John McCall S.Diag(src->getExprLoc(), diag::err_arc_nonlocal_writeback) 3904f85e193739c953358c865005855253af4f68a497John McCall << ((unsigned) iik - 1) // shift index into diagnostic explanations 3905f85e193739c953358c865005855253af4f68a497John McCall << src->getSourceRange(); 3906f85e193739c953358c865005855253af4f68a497John McCall} 3907f85e193739c953358c865005855253af4f68a497John McCall 3908cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// \brief Determine whether we have compatible array types for the 3909cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// purposes of GNU by-copy array initialization. 3910cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorstatic bool hasCompatibleArrayTypes(ASTContext &Context, 3911cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Dest, 3912cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Source) { 3913cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the source and destination array types are equivalent, we're 3914cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // done. 3915cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Context.hasSameType(QualType(Dest, 0), QualType(Source, 0))) 3916cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return true; 3917cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3918cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Make sure that the element types are the same. 3919cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!Context.hasSameType(Dest->getElementType(), Source->getElementType())) 3920cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return false; 3921cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3922cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // The only mismatch we allow is when the destination is an 3923cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // incomplete array type and the source is a constant array type. 3924cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return Source->isConstantArrayType() && Dest->isIncompleteArrayType(); 3925cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 3926cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3927f85e193739c953358c865005855253af4f68a497John McCallstatic bool tryObjCWritebackConversion(Sema &S, 3928f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 3929f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity, 3930f85e193739c953358c865005855253af4f68a497John McCall Expr *Initializer) { 3931f85e193739c953358c865005855253af4f68a497John McCall bool ArrayDecay = false; 3932f85e193739c953358c865005855253af4f68a497John McCall QualType ArgType = Initializer->getType(); 3933f85e193739c953358c865005855253af4f68a497John McCall QualType ArgPointee; 3934f85e193739c953358c865005855253af4f68a497John McCall if (const ArrayType *ArgArrayType = S.Context.getAsArrayType(ArgType)) { 3935f85e193739c953358c865005855253af4f68a497John McCall ArrayDecay = true; 3936f85e193739c953358c865005855253af4f68a497John McCall ArgPointee = ArgArrayType->getElementType(); 3937f85e193739c953358c865005855253af4f68a497John McCall ArgType = S.Context.getPointerType(ArgPointee); 3938f85e193739c953358c865005855253af4f68a497John McCall } 3939f85e193739c953358c865005855253af4f68a497John McCall 3940f85e193739c953358c865005855253af4f68a497John McCall // Handle write-back conversion. 3941f85e193739c953358c865005855253af4f68a497John McCall QualType ConvertedArgType; 3942f85e193739c953358c865005855253af4f68a497John McCall if (!S.isObjCWritebackConversion(ArgType, Entity.getType(), 3943f85e193739c953358c865005855253af4f68a497John McCall ConvertedArgType)) 3944f85e193739c953358c865005855253af4f68a497John McCall return false; 3945f85e193739c953358c865005855253af4f68a497John McCall 3946f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 3947f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 3948f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 3949f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 3950f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 3951f85e193739c953358c865005855253af4f68a497John McCall 3952f85e193739c953358c865005855253af4f68a497John McCall // Do we need an lvalue conversion? 3953f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay || Initializer->isGLValue()) { 3954f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS; 3955f85e193739c953358c865005855253af4f68a497John McCall ICS.setStandard(); 3956f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.setAsIdentityConversion(); 3957f85e193739c953358c865005855253af4f68a497John McCall 3958f85e193739c953358c865005855253af4f68a497John McCall QualType ResultType; 3959f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay) { 3960f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Array_To_Pointer; 3961f85e193739c953358c865005855253af4f68a497John McCall ResultType = S.Context.getPointerType(ArgPointee); 3962f85e193739c953358c865005855253af4f68a497John McCall } else { 3963f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Lvalue_To_Rvalue; 3964f85e193739c953358c865005855253af4f68a497John McCall ResultType = Initializer->getType().getNonLValueExprType(S.Context); 3965f85e193739c953358c865005855253af4f68a497John McCall } 3966f85e193739c953358c865005855253af4f68a497John McCall 3967f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, ResultType); 3968f85e193739c953358c865005855253af4f68a497John McCall } 3969f85e193739c953358c865005855253af4f68a497John McCall 3970f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 3971f85e193739c953358c865005855253af4f68a497John McCall return true; 3972f85e193739c953358c865005855253af4f68a497John McCall} 3973f85e193739c953358c865005855253af4f68a497John McCall 397420093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 397520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 397620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 397720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 39785769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 39795769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 398012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola ASTContext &Context = S.Context; 3981dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 398220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 3983dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // The semantics of initializers are as follows. The destination type is 3984dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // the type of the object or reference being initialized and the source 398520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 3986dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // defined when the initializer is a braced-init-list or when it is a 398720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 398812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 398920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 399012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola if (DestType->isDependentType() || 399113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Expr::hasAnyTypeDependentArguments(llvm::makeArrayRef(Args, NumArgs))) { 399220093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 399320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 399420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 399520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 39967491c499e826682e128a400038361ebcbde30eecSebastian Redl // Almost everything is a normal sequence. 39977491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(NormalSequence); 39987491c499e826682e128a400038361ebcbde30eecSebastian Redl 3999241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall for (unsigned I = 0; I != NumArgs; ++I) 400032509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (Args[I]->getType()->isNonOverloadPlaceholderType()) { 40015acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: should we be doing this here? 400232509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall ExprResult result = S.CheckPlaceholderExpr(Args[I]); 400332509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (result.isInvalid()) { 400432509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall SetFailed(FK_PlaceholderType); 400532509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall return; 40065acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 400732509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall Args[I] = result.take(); 4008429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 4009241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall 40105acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 401120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 401220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 401399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 401420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 401520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 401620093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 401720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4018dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 40193a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl // - If the initializer is a (non-parenthesized) braced-init-list, the 40203a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl // object is list-initialized (8.5.4). 40213a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl if (Kind.getKind() != InitializationKind::IK_Direct) { 40223a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 40233a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl TryListInitialization(S, Entity, Kind, InitList, *this); 40243a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl return; 40253a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl } 402620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4027dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 402820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 402920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 403020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 403120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 403220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 403320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 403420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 403520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 403612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForReference); 403720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 403812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 403920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 404020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4041dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 404220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 404399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 404499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 404512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryValueInitialization(S, Entity, Kind, *this); 404620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 404720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4048dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 404999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 40507663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky if (Kind.getKind() == InitializationKind::IK_Default) { 405112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryDefaultInitialization(S, Entity, Kind, *this); 405299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 405399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 405418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4055ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // - If the destination type is an array of characters, an array of 4056ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // char16_t, an array of char32_t, or an array of wchar_t, and the 4057ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // initializer is a string literal, see 8.5.2. 4058dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the destination type is an array, the program is 405920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 4060cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ArrayType *DestAT = Context.getAsArrayType(DestType)) { 406173076431605556fdbf28d287d084a73a24a8b8d4John McCall if (Initializer && isa<VariableArrayType>(DestAT)) { 406273076431605556fdbf28d287d084a73a24a8b8d4John McCall SetFailed(FK_VariableLengthArrayHasInitializer); 406373076431605556fdbf28d287d084a73a24a8b8d4John McCall return; 406473076431605556fdbf28d287d084a73a24a8b8d4John McCall } 406573076431605556fdbf28d287d084a73a24a8b8d4John McCall 4066cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Initializer && IsStringInit(Initializer, DestAT, Context)) { 406712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 4068ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return; 4069ce6c9b7da219c8640a0559f75770cfc6622de083John McCall } 4070ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 4071cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Note: as an GNU C extension, we allow initialization of an 4072cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // array from a compound literal that creates an array of the same 4073cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type, so long as the initializer has no side effects. 40744e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus && Initializer && 4075cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor isa<CompoundLiteralExpr>(Initializer->IgnoreParens()) && 4076cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Initializer->getType()->isArrayType()) { 4077cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *SourceAT 4078cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = Context.getAsArrayType(Initializer->getType()); 4079cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!hasCompatibleArrayTypes(S.Context, DestAT, SourceAT)) 408012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayTypeMismatch); 4081cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else if (Initializer->HasSideEffects(S.Context)) 408212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_NonConstantArrayInit); 4083cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else { 408412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddArrayInitStep(DestType); 4085cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 40860f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith } 4087f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // Note: as a GNU C++ extension, we allow list-initialization of a 4088f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // class member of array type from a parenthesized initializer list. 40894e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (S.getLangOpts().CPlusPlus && 40900f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Entity.getKind() == InitializedEntity::EK_Member && 40910f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Initializer && isa<InitListExpr>(Initializer)) { 40920f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith TryListInitialization(S, Entity, Kind, cast<InitListExpr>(Initializer), 40930f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith *this); 40940f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith AddParenthesizedArrayInitStep(DestType); 4095cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } else if (DestAT->getElementType()->isAnyCharacterType()) 409612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 409720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 409812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitList); 4099dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 410020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 410120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4102cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 4103f85e193739c953358c865005855253af4f68a497John McCall // Determine whether we should consider writeback conversions for 4104f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC. 41054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie bool allowObjCWritebackConversion = S.getLangOpts().ObjCAutoRefCount && 4106f85e193739c953358c865005855253af4f68a497John McCall Entity.getKind() == InitializedEntity::EK_Parameter; 4107f85e193739c953358c865005855253af4f68a497John McCall 4108f85e193739c953358c865005855253af4f68a497John McCall // We're at the end of the line for C: it's either a write-back conversion 4109f85e193739c953358c865005855253af4f68a497John McCall // or it's a C assignment. There's no need to check anything else. 41104e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus) { 4111f85e193739c953358c865005855253af4f68a497John McCall // If allowed, check whether this is an Objective-C writeback conversion. 4112f85e193739c953358c865005855253af4f68a497John McCall if (allowObjCWritebackConversion && 411312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola tryObjCWritebackConversion(S, *this, Entity, Initializer)) { 4114f85e193739c953358c865005855253af4f68a497John McCall return; 4115f85e193739c953358c865005855253af4f68a497John McCall } 4116f85e193739c953358c865005855253af4f68a497John McCall 4117f85e193739c953358c865005855253af4f68a497John McCall // Handle initialization in C 411812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddCAssignmentStep(DestType); 411912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 4120cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 4121cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 4122dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 41234e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().CPlusPlus); 4124f85e193739c953358c865005855253af4f68a497John McCall 412520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 412620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 4127dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initialization is direct-initialization, or if it is 4128dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy-initialization where the cv-unqualified version of the 4129dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // source type is the same class as, or a derived class of, the 413020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 413120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 413220093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 413320093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 413420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 4135dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 413612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Entity.getType(), *this); 4137dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise (i.e., for the remaining copy-initialization cases), 413820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 4139dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // type to the destination type or (when a conversion function is 414020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 414120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 414220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 414320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 414412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 414520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 414620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4147dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 414899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 414912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForScalar); 415099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 415199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 415299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 4153dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4154dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the source type is a (possibly cv-qualified) class 415520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 415699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 415712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 415812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 415920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 416020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4161dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 416220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 41634a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 416420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 4165dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // initializer expression to the cv-unqualified version of the 416620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 4167f85e193739c953358c865005855253af4f68a497John McCall 4168f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 4169f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, Entity.getType(), 4170f85e193739c953358c865005855253af4f68a497John McCall /*SuppressUserConversions*/true, 4171369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*AllowExplicitConversions*/ false, 417214d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*InOverloadResolution*/ false, 4173f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 4174f85e193739c953358c865005855253af4f68a497John McCall allowObjCWritebackConversion); 4175f85e193739c953358c865005855253af4f68a497John McCall 4176f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isStandard() && 4177f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.Second == ICK_Writeback_Conversion) { 4178f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC writeback conversion. 4179f85e193739c953358c865005855253af4f68a497John McCall 4180f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 4181f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 4182f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 4183f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *Param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 4184f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (Param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 4185f85e193739c953358c865005855253af4f68a497John McCall 4186f85e193739c953358c865005855253af4f68a497John McCall // If there was an lvalue adjustment, add it as a separate conversion. 4187f85e193739c953358c865005855253af4f68a497John McCall if (ICS.Standard.First == ICK_Array_To_Pointer || 4188f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First == ICK_Lvalue_To_Rvalue) { 4189f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence LvalueICS; 4190f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.setStandard(); 4191f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAsIdentityConversion(); 4192f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAllToTypes(ICS.Standard.getToType(0)); 4193f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.First = ICS.Standard.First; 419412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(LvalueICS, ICS.Standard.getToType(0)); 4195f85e193739c953358c865005855253af4f68a497John McCall } 419612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 419712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 4198f85e193739c953358c865005855253af4f68a497John McCall } else if (ICS.isBad()) { 41991be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor DeclAccessPair dap; 42001be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor if (Initializer->getType() == Context.OverloadTy && 42011be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor !S.ResolveAddressOfOverloadedFunction(Initializer 42021be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor , DestType, false, dap)) 420312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 42048e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor else 420512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_ConversionFailed); 4206f85e193739c953358c865005855253af4f68a497John McCall } else { 420712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(ICS, Entity.getType()); 4208856d3798af7c2f7251e4a295f3da7a09ce4c62abJohn McCall 420912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 42108e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor } 421120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 421220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 421320093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 42145f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<Step>::iterator Step = Steps.begin(), 421520093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 421620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 421720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 421820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 421920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 422020093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 422120093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 422220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 4223dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic Sema::AssignmentAction 422418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 422518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 422618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 422718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 4228a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Exception: 4229a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Base: 4230059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 423118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 423218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 423318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 4234dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (Entity.getDecl() && 4235688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 4236688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 4237688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 423818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 423918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 424018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 424118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 424218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 424318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 424418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 424518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 4246dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 424718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 4248d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 4249d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42500c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4251310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42524773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 425318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 425418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 425518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42567530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 425718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 425818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42594154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 42604154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 42612f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 426218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 42631b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 42641b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 42652f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 426618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 426718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 426818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 4269059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 4270d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42710c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4272a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 4273310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42744773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 427518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 4276dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 427718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 427818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 427918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 428018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 4281dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 428218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 428318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 428418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42854154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 42864154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 42874154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 42884154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 42894154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 42904154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 42914154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 42924154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 4293059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 42944154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 42950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4296310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42974773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 42984154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 4299dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 43004154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 43014154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 43024154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 43034154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 43044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 43054154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 43064154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 4307dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4308dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi llvm_unreachable("missed an InitializedEntity kind?"); 43094154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 43104154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 431183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Look for copy and move constructors and constructor templates, for 431283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// copying an object via direct-initialization (per C++11 [dcl.init]p16). 431383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void LookupCopyAndMoveConstructors(Sema &S, 431483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet &CandidateSet, 431583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXRecordDecl *Class, 431683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 431783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclContext::lookup_iterator Con, ConEnd; 431883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith for (llvm::tie(Con, ConEnd) = S.LookupConstructors(Class); 431983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Con != ConEnd; ++Con) { 432083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXConstructorDecl *Constructor = 0; 432183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 432283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if ((Constructor = dyn_cast<CXXConstructorDecl>(*Con))) { 432383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle copy/moveconstructors, only. 432483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor || Constructor->isInvalidDecl() || 432583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isCopyOrMoveConstructor() || 432683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 432783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 432883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 432983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 433083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(Constructor, Constructor->getAccess()); 433183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddOverloadCandidate(Constructor, FoundDecl, 433213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CurInitExpr, CandidateSet); 433383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 433483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 433583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 433683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle constructor templates. 433783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith FunctionTemplateDecl *ConstructorTmpl = cast<FunctionTemplateDecl>(*Con); 433883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (ConstructorTmpl->isInvalidDecl()) 433983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 434183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Constructor = cast<CXXConstructorDecl>( 434283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith ConstructorTmpl->getTemplatedDecl()); 434383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 434483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 434683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Do we need to limit this to copy-constructor-like 434783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // candidates? 434883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 434983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(ConstructorTmpl, ConstructorTmpl->getAccess()); 435083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 0, 435113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CurInitExpr, CandidateSet, true); 435283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 435383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 435483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 435583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Get the location at which initialization diagnostics should appear. 435683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic SourceLocation getInitializationLoc(const InitializedEntity &Entity, 435783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *Initializer) { 435883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (Entity.getKind()) { 435983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Result: 436083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getReturnLoc(); 436183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 436283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Exception: 436383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getThrowLoc(); 436483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 436583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Variable: 436683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getDecl()->getLocation(); 436783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 43684773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 43694773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor return Entity.getCaptureLoc(); 43704773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor 437183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ArrayElement: 437283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Member: 437383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Parameter: 437483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Temporary: 437583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_New: 437683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Base: 437783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Delegating: 437883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_VectorElement: 437983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ComplexElement: 438083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_BlockElement: 438183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Initializer->getLocStart(); 438283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 438383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith llvm_unreachable("missed an InitializedEntity kind?"); 438483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 438583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4386523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 4387523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 4388523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 4389523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4390523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 4391523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 439263e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// \param T The type of the temporary object, which must either be 4393523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 4394523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 43951dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// \param Entity The entity being initialized. 4396523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4397523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 4398523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4399523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 4400523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 4401523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 4402523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4403523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 4404523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 4405523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 440660d7b3a319d84d688752be3870615ac0f111fb16John McCallstatic ExprResult CopyObject(Sema &S, 44078fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor QualType T, 44088fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor const InitializedEntity &Entity, 44098fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor ExprResult CurInit, 44108fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor bool IsExtraneousCopy) { 44113fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 44121b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 4413dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXRecordDecl *Class = 0; 4414523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 44152f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 44162f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 44172f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return move(CurInit); 44182f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 4419f5d8f466c3eebaffc51468812bdcbe7f0fe4891aDouglas Gregor // C++0x [class.copy]p32: 44202f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 44212f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 44222f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 44232f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 44242f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 44252f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 44262f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 44272f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 44282f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 4429dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // 44302f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 44313c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // elision for return statements and throw expressions are handled as part 4432dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // of constructor initialization, while copy elision for exception handlers 44333c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // is handled by the run-time. 4434558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool Elidable = CurInitExpr->isTemporaryObject(S.Context, Class); 443583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInit.get()); 4436f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4437dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Make sure that the type we are copying is complete. 4438d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (S.RequireCompleteType(Loc, T, diag::err_temp_copy_incomplete)) 4439f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor return move(CurInit); 4440f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4441cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Perform overload resolution using the class's copy/move constructors. 444283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Only consider constructors and constructor templates. Per 444383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // C++0x [dcl.init]p16, second bullet to class types, this initialization 444483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // is direct-initialization. 44455769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 444683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors(S, CandidateSet, Class, CurInitExpr); 4447dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 44487cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 44497cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 445018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 445125ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth switch (CandidateSet.BestViableFunction(S, Loc, Best)) { 445218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 445318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4454dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 445518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 445657d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext() 445757d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin ? diag::ext_rvalue_to_reference_temp_copy_no_viable 445857d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin : diag::err_temp_copy_no_viable) 44597abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 446018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 446113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr); 446257d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin if (!IsExtraneousCopy || S.isSFINAEContext()) 4463f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 446457d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin return move(CurInit); 4465dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 446618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 446718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 44687abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 446918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 447013a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr); 4471f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4472dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 447318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 447418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 44757abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 447618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 44776c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 4478f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 447918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 448018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 44813fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 4482ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 44833fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 4484523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 44859a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 448657d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin Best->FoundDecl.getAccess(), IsExtraneousCopy); 4487523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4488523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 4489523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 4490523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 44912559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 44922559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 44932559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 44942559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 44952559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 44962559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 44972559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 44982559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 44992559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 45002559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 45012559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 4502d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_call_incomplete_argument)) 45032559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 45042559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 45052559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 45062559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 45072559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 45082559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 45092559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 4510523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4511523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 4512523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 4513dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 45145f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(Loc, Constructor); 451525ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 45163fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 4517523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 4518523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 4519f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall if (S.CompleteConstructorCall(Constructor, MultiExprArg(&CurInitExpr, 1), 45203fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 4521f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 45223fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 4523b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // Actually perform the constructor call. 4524b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 45257a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 45267cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 45277a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 4528428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 4529428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 4530dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4531b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // If we're supposed to bind temporaries, do so. 4532b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) 4533b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 4534b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor return move(CurInit); 453518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 453620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 453783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Check whether elidable copy construction for binding a reference to 453883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// a temporary would have succeeded if we were building in C++98 mode, for 453983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// -Wc++98-compat. 454083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 454183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 454283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 45434e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().CPlusPlus0x); 454483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 454583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const RecordType *Record = CurInitExpr->getType()->getAs<RecordType>(); 454683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Record) 454783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 454883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 454983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInitExpr); 455083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (S.Diags.getDiagnosticLevel(diag::warn_cxx98_compat_temp_copy, Loc) 455183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith == DiagnosticsEngine::Ignored) 455283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 455383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 455483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Find constructors which would have been considered. 455583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet CandidateSet(Loc); 455683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors( 455783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S, CandidateSet, cast<CXXRecordDecl>(Record->getDecl()), CurInitExpr); 455883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 455983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Perform overload resolution. 456083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet::iterator Best; 456183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadingResult OR = CandidateSet.BestViableFunction(S, Loc, Best); 456283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith PartialDiagnostic Diag = S.PDiag(diag::warn_cxx98_compat_temp_copy) 456483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << OR << (int)Entity.getKind() << CurInitExpr->getType() 456583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << CurInitExpr->getSourceRange(); 456683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (OR) { 456883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Success: 456983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.CheckConstructorAccess(Loc, cast<CXXConstructorDecl>(Best->Function), 4570b9abd87283ac6e929b7e12a577663bc99e61d020John McCall Entity, Best->FoundDecl.getAccess(), Diag); 457183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Check default arguments as far as that's possible. 457283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 457383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_No_Viable_Function: 457583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 457613a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr); 457783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 457883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Ambiguous: 458083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 458113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr); 458283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 458383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Deleted: 458583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 45866c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 458783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 458883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 458983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 459083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4591a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 4592a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 4593a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 4594a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 4595a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 4596a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 4597a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 4598a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 4599a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 4600a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 4601a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 4602a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 4603a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 4604a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 46053b80232b50c29b245e674f5aa02047b408e41018Sebastian Redlstatic bool isReferenceBinding(const InitializationSequence::Step &s) { 46063b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return s.Kind == InitializationSequence::SK_BindReference || 46073b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl s.Kind == InitializationSequence::SK_BindReferenceToTemporary; 46083b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl} 46093b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl 461010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic ExprResult 461110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian RedlPerformConstructorInitialization(Sema &S, 461210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 461310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 461410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Args, 461510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationSequence::Step& Step, 461610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool &ConstructorInitRequiresZeroInit) { 461710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumArgs = Args.size(); 461810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructorDecl *Constructor 461910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXConstructorDecl>(Step.Function.Function); 462010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = Step.Function.HadMultipleCandidates; 462110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 462210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Build a call to the selected constructor. 462310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ASTOwningVector<Expr*> ConstructorArgs(S); 462410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) 462510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ? Kind.getEqualLoc() 462610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl : Kind.getLocation(); 462710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 462810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default) { 462910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Force even a trivial, implicit default constructor to be 463010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // semantically checked. We do this explicitly because we don't build 463110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // the definition for completely trivial constructors. 463228e4702a1f978213ff945fe4369e3be7444bf320Matt Beaumont-Gay assert(Constructor->getParent() && "No parent class for constructor."); 463310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Constructor->isDefaulted() && Constructor->isDefaultConstructor() && 46345d86f61b9c54429fc3f9149fc0f7009010a644a1Douglas Gregor Constructor->isTrivial() && !Constructor->isUsed(false)) 463510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DefineImplicitDefaultConstructor(Loc, Constructor); 463610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 463710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 463810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ExprResult CurInit = S.Owned((Expr *)0); 463910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 4640ed878af7914df535b32d64f555fa118413186672Douglas Gregor // C++ [over.match.copy]p1: 4641ed878af7914df535b32d64f555fa118413186672Douglas Gregor // - When initializing a temporary to be bound to the first parameter 4642ed878af7914df535b32d64f555fa118413186672Douglas Gregor // of a constructor that takes a reference to possibly cv-qualified 4643ed878af7914df535b32d64f555fa118413186672Douglas Gregor // T as its first argument, called with a single argument in the 4644ed878af7914df535b32d64f555fa118413186672Douglas Gregor // context of direct-initialization, explicit conversion functions 4645ed878af7914df535b32d64f555fa118413186672Douglas Gregor // are also considered. 4646ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConv = Kind.AllowExplicit() && !Kind.isCopyInit() && 4647ed878af7914df535b32d64f555fa118413186672Douglas Gregor Args.size() == 1 && 4648ed878af7914df535b32d64f555fa118413186672Douglas Gregor Constructor->isCopyOrMoveConstructor(); 4649ed878af7914df535b32d64f555fa118413186672Douglas Gregor 465010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Determine the arguments required to actually perform the constructor 465110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // call. 465210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.CompleteConstructorCall(Constructor, move(Args), 4653ed878af7914df535b32d64f555fa118413186672Douglas Gregor Loc, ConstructorArgs, 4654ed878af7914df535b32d64f555fa118413186672Douglas Gregor AllowExplicitConv)) 465510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 465610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Temporary && 4659188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (Kind.getKind() == InitializationKind::IK_DirectList || 4660188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (NumArgs != 1 && // FIXME: Hack to work around cast weirdness 4661188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (Kind.getKind() == InitializationKind::IK_Direct || 4662188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl Kind.getKind() == InitializationKind::IK_Value)))) { 466310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // An explicitly-constructed temporary, e.g., X(1, 2). 466410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumExprs = ConstructorArgs.size(); 466510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Exprs = (Expr **)ConstructorArgs.take(); 46665f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(Loc, Constructor); 466710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Constructor, Loc); 466810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 466910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 467010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!TSInfo) 467110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo = S.Context.getTrivialTypeSourceInfo(Entity.getType(), Loc); 4672188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl SourceRange ParenRange; 4673188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl if (Kind.getKind() != InitializationKind::IK_DirectList) 4674188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl ParenRange = Kind.getParenRange(); 467510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 467610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 467710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 467810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo, 467910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Exprs, 468010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl NumExprs, 4681188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl ParenRange, 468210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 468310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit)); 468410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else { 468510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::ConstructionKind ConstructKind = 468610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_Complete; 468710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 468810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Base) { 468910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? 469010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_VirtualBase : 469110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_NonVirtualBase; 469210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else if (Entity.getKind() == InitializedEntity::EK_Delegating) { 469310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = CXXConstructExpr::CK_Delegating; 469410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 469510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 469610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only get the parenthesis range if it is a direct construction. 469710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceRange parenRange = 469810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Direct ? 469910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getParenRange() : SourceRange(); 470010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 470110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If the entity allows NRVO, mark the construction as elidable 470210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // unconditionally. 470310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.allowsNRVO()) 470410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 470510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, /*Elidable=*/true, 470610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move_arg(ConstructorArgs), 470710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 470810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 470910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 471010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 471110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 471210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 471310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 471410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move_arg(ConstructorArgs), 471510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 471610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 471710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 471810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 471910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 472010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (CurInit.isInvalid()) 472110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 472210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 472310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only check access if all of that succeeded. 472410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckConstructorAccess(Loc, Constructor, Entity, 472510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Step.Function.FoundDecl.getAccess()); 472610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Step.Function.FoundDecl, Loc); 472710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 472810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (shouldBindAsTemporary(Entity)) 472910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 473010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 473110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return move(CurInit); 473210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 473310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 473436d02af300a207242f0486b4255420d8be796b21Richard Smith/// Determine whether the specified InitializedEntity definitely has a lifetime 473536d02af300a207242f0486b4255420d8be796b21Richard Smith/// longer than the current full-expression. Conservatively returns false if 473636d02af300a207242f0486b4255420d8be796b21Richard Smith/// it's unclear. 473736d02af300a207242f0486b4255420d8be796b21Richard Smithstatic bool 473836d02af300a207242f0486b4255420d8be796b21Richard SmithInitializedEntityOutlivesFullExpression(const InitializedEntity &Entity) { 473936d02af300a207242f0486b4255420d8be796b21Richard Smith const InitializedEntity *Top = &Entity; 474036d02af300a207242f0486b4255420d8be796b21Richard Smith while (Top->getParent()) 474136d02af300a207242f0486b4255420d8be796b21Richard Smith Top = Top->getParent(); 474236d02af300a207242f0486b4255420d8be796b21Richard Smith 474336d02af300a207242f0486b4255420d8be796b21Richard Smith switch (Top->getKind()) { 474436d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Variable: 474536d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Result: 474636d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Exception: 474736d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Member: 474836d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_New: 474936d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Base: 475036d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Delegating: 475136d02af300a207242f0486b4255420d8be796b21Richard Smith return true; 475236d02af300a207242f0486b4255420d8be796b21Richard Smith 475336d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_ArrayElement: 475436d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_VectorElement: 475536d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_BlockElement: 475636d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_ComplexElement: 475736d02af300a207242f0486b4255420d8be796b21Richard Smith // Could not determine what the full initialization is. Assume it might not 475836d02af300a207242f0486b4255420d8be796b21Richard Smith // outlive the full-expression. 475936d02af300a207242f0486b4255420d8be796b21Richard Smith return false; 476036d02af300a207242f0486b4255420d8be796b21Richard Smith 476136d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Parameter: 476236d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Temporary: 476336d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_LambdaCapture: 476436d02af300a207242f0486b4255420d8be796b21Richard Smith // The entity being initialized might not outlive the full-expression. 476536d02af300a207242f0486b4255420d8be796b21Richard Smith return false; 476636d02af300a207242f0486b4255420d8be796b21Richard Smith } 476736d02af300a207242f0486b4255420d8be796b21Richard Smith 476836d02af300a207242f0486b4255420d8be796b21Richard Smith llvm_unreachable("unknown entity kind"); 476936d02af300a207242f0486b4255420d8be796b21Richard Smith} 477036d02af300a207242f0486b4255420d8be796b21Richard Smith 4771dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 477220093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 477320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 477420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 4775f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiExprArg Args, 4776d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 4777d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (Failed()) { 477820093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 477920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Diagnose(S, Entity, Kind, (Expr **)Args.release(), NumArgs); 4780f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 478120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4782dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 47837491c499e826682e128a400038361ebcbde30eecSebastian Redl if (getKind() == DependentSequence) { 4784d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 4785d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 4786d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 4787d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 4788d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 4789d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 4790d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 4791d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 4792d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 4793d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 4794d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 4795d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 4796d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 4797d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 4798d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 4799d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (isa<InitListExpr>((Expr *)Args.get()[0])) { 4800d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 4801d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 4802d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 4803d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 4804d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 4805d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 4806d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 4807d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 4808d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 4809d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 4810d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4811d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4812d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 4813d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 4814d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 4815d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 4816d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 4817d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 4818d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4819d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4820d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4821d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 48225b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl if (Kind.getKind() == InitializationKind::IK_Direct && 48235b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl !Kind.isExplicitCast()) { 48245b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl // Rebuild the ParenListExpr. 48255b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl SourceRange ParenRange = Kind.getParenRange(); 48265b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl return S.ActOnParenListExpr(ParenRange.getBegin(), ParenRange.getEnd(), 48275b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl move(Args)); 48285b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl } 48290d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek assert(Kind.getKind() == InitializationKind::IK_Copy || 4830a9b55a499a8b5ae0c4b373f751ef62af74ec494eDouglas Gregor Kind.isExplicitCast() || 4831a9b55a499a8b5ae0c4b373f751ef62af74ec494eDouglas Gregor Kind.getKind() == InitializationKind::IK_DirectList); 48320d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek return ExprResult(Args.release()[0]); 483320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 483420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 48357491c499e826682e128a400038361ebcbde30eecSebastian Redl // No steps means no initialization. 48367491c499e826682e128a400038361ebcbde30eecSebastian Redl if (Steps.empty()) 483799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 4838dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 483903544fccd1782418c1bf2528111683e18f43b913Richard Smith if (S.getLangOpts().CPlusPlus0x && Entity.getType()->isReferenceType() && 484003544fccd1782418c1bf2528111683e18f43b913Richard Smith Args.size() == 1 && isa<InitListExpr>(Args.get()[0]) && 484103544fccd1782418c1bf2528111683e18f43b913Richard Smith Entity.getKind() != InitializedEntity::EK_Parameter) { 484203544fccd1782418c1bf2528111683e18f43b913Richard Smith // Produce a C++98 compatibility warning if we are initializing a reference 484303544fccd1782418c1bf2528111683e18f43b913Richard Smith // from an initializer list. For parameters, we produce a better warning 484403544fccd1782418c1bf2528111683e18f43b913Richard Smith // elsewhere. 484503544fccd1782418c1bf2528111683e18f43b913Richard Smith Expr *Init = Args.get()[0]; 484603544fccd1782418c1bf2528111683e18f43b913Richard Smith S.Diag(Init->getLocStart(), diag::warn_cxx98_compat_reference_list_init) 484703544fccd1782418c1bf2528111683e18f43b913Richard Smith << Init->getSourceRange(); 484836d02af300a207242f0486b4255420d8be796b21Richard Smith } 484936d02af300a207242f0486b4255420d8be796b21Richard Smith 485036d02af300a207242f0486b4255420d8be796b21Richard Smith // Diagnose cases where we initialize a pointer to an array temporary, and the 485136d02af300a207242f0486b4255420d8be796b21Richard Smith // pointer obviously outlives the temporary. 485236d02af300a207242f0486b4255420d8be796b21Richard Smith if (Args.size() == 1 && Args.get()[0]->getType()->isArrayType() && 485336d02af300a207242f0486b4255420d8be796b21Richard Smith Entity.getType()->isPointerType() && 485436d02af300a207242f0486b4255420d8be796b21Richard Smith InitializedEntityOutlivesFullExpression(Entity)) { 485536d02af300a207242f0486b4255420d8be796b21Richard Smith Expr *Init = Args.get()[0]; 485636d02af300a207242f0486b4255420d8be796b21Richard Smith Expr::LValueClassification Kind = Init->ClassifyLValue(S.Context); 485736d02af300a207242f0486b4255420d8be796b21Richard Smith if (Kind == Expr::LV_ClassTemporary || Kind == Expr::LV_ArrayTemporary) 485836d02af300a207242f0486b4255420d8be796b21Richard Smith S.Diag(Init->getLocStart(), diag::warn_temporary_array_to_pointer_decay) 485936d02af300a207242f0486b4255420d8be796b21Richard Smith << Init->getSourceRange(); 486003544fccd1782418c1bf2528111683e18f43b913Richard Smith } 486103544fccd1782418c1bf2528111683e18f43b913Richard Smith 4862d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 4863d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 4864a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 4865a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 4866d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 4867a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 4868d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 486920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 487060d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult CurInit = S.Owned((Expr *)0); 4871dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4872dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // For initialization steps that start with a single initializer, 487399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 487499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 487599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 487618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 487718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 4878906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 487918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 488018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 488118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 4882523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 488318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 488418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 4885906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 488618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 488718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 488818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 488913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 489013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 489118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 4892cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 4893cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ObjCObjectConversion: 4894f85e193739c953358c865005855253af4f68a497John McCall case SK_ArrayInit: 48950f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 4896f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 4897f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 48982b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_ProduceObjCObject: 48992b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: { 490018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 4901429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = Args.get()[0]; 4902429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (!CurInit.get()) return ExprError(); 490318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4904f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall } 4905dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 490618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 4907f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith case SK_ListConstructorCall: 490818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 490918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 491020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4911dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4912dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Walk through the computed steps for the initialization sequence, 491320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 491416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 491520093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 491620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 491720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 4918f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4919dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4920429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get() ? CurInit.get()->getType() : QualType(); 4921dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 492220093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 492320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4924dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Overload resolution determined which function invoke; update the 492520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 4926429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckAddressOfMemberAccess(CurInit.get(), Step->Function.FoundDecl); 4927b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation()); 4928b13b737a2450167c82e148590e8019b839ce6b98John McCall CurInit = S.FixOverloadedFunctionReference(move(CurInit), 49296bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 49309aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 493120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4932dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 493320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 4934906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 493520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 493620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 493720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 4938dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4939f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXCastPath BasePath; 49405cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 494120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 494220093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 494320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 4944429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getLocStart(), 4945429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getSourceRange(), 49465cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 4947f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4948dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 49496fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (S.BasePathInvolvesVirtualBase(BasePath)) { 49506fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor QualType T = SourceType; 49516fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const PointerType *Pointer = T->getAs<PointerType>()) 49526fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor T = Pointer->getPointeeType(); 49536fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const RecordType *RecordTy = T->getAs<RecordType>()) 4954429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkVTableUsed(CurInit.get()->getLocStart(), 49556fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor cast<CXXRecordDecl>(RecordTy->getDecl())); 49566fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor } 49576fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 49585baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 4959906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_CastDerivedToBaseLValue ? 49605baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 4961906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_CastDerivedToBaseXValue ? 49625baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 49635baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 4964f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 4965f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Step->Type, 49662de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_DerivedToBase, 49675baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall CurInit.get(), 49685baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall &BasePath, VK)); 496920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 497020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4971dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 497220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 4973429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (FieldDecl *BitField = CurInit.get()->getBitField()) { 497420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 497520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 4976d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 497720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 4978429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 497920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 4980f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 498120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4982a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 4983429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.get()->refersToVectorElement()) { 498441593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 4985093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 4986093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 4987429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 4988a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 4989f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4990093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 4991dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 499220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 499320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 499420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 4995429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 4996f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 49973aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 499820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 49993aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 500020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 500120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 5002429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 5003f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 500420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 500503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor // Materialize the temporary into memory. 5006b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit = new (S.Context) MaterializeTemporaryExpr( 5007b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor Entity.getType().getNonReferenceType(), 5008b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit.get(), 500903e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Entity.getType()->isLValueReferenceType()); 5010d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 5011d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // If we're binding to an Objective-C object that has lifetime, we 5012d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // need cleanups. 50134e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && 5014d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor CurInit.get()->getType()->isObjCLifetimeType()) 5015d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor S.ExprNeedsCleanups = true; 5016d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 501720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5018dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5019523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 5020dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = CopyObject(S, Step->Type, Entity, move(CurInit), 5021523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 5022523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 5023523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 502420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 502520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 502620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 5027daa8e4e888758d55a7a759dd4a91b83921cef222John McCall CastKind CastKind; 502818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 50299aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 50309aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 50317cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = Step->Function.HadMultipleCandidates; 50324154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 5033b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 503420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 5035ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 5036429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SourceLocation Loc = CurInit.get()->getLocStart(); 503720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 5038b13b737a2450167c82e148590e8019b839ce6b98John McCall 503920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 504020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 5041429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Expr *Arg = CurInit.get(); 504220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 5043429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley MultiExprArg(&Arg, 1), 504420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 5045f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5046dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5047f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // Build an expression that constructs a temporary. 5048dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 50497a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 50507cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 50517a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 5052428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 5053428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 505420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 5055f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5056b13b737a2450167c82e148590e8019b839ce6b98John McCall 50579a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 50589aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 5059b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 5060dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50612de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_ConstructorConversion; 506218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 506318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 506418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 506518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 5066dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50674154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 506820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 506920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 5070b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 5071429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckMemberOperatorAccess(Kind.getLocation(), CurInit.get(), 0, 50729aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 5073b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 5074dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5075dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Should we move this initialization into a separate 507620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 507720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 5078429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5079429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformObjectArgumentInitialization(CurInit.take(), /*Qualifier=*/0, 5080429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley FoundFn, Conversion); 5081429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if(CurInitExprRes.isInvalid()) 5082f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5083429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 5084dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 508520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 50867cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara CurInit = S.BuildCXXMemberCallExpr(CurInit.get(), FoundFn, Conversion, 50877cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates); 508820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 5089f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5090dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50912de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_UserDefinedConversion; 5092dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50934154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 509420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5095dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50963b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl bool RequiresCopy = !IsCopy && !isReferenceBinding(Steps.back()); 5097960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara bool MaybeBindToTemp = RequiresCopy || shouldBindAsTemporary(Entity); 5098960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara 5099960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (!MaybeBindToTemp && CreatedObject && shouldDestroyTemporary(Entity)) { 5100429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType T = CurInit.get()->getType(); 51014154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 5102dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXDestructorDecl *Destructor 5103db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); 5104429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckDestructorAccess(CurInit.get()->getLocStart(), Destructor, 51054154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 51065f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(CurInit.get()->getLocStart(), Destructor); 5107429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.DiagnoseUseOfDecl(Destructor, CurInit.get()->getLocStart()); 51084154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 51094154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 5110dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5111f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 5112429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getType(), 5113429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CastKind, CurInit.get(), 0, 5114104be6fc8de206c9b79b241b36ebaf9407b3be08Eli Friedman CurInit.get()->getValueKind())); 5115960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (MaybeBindToTemp) 5116960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 51172f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 5118523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 5119523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor move(CurInit), /*IsExtraneousCopy=*/false); 512020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 512120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5122906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 512320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 5124906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5125906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionRValue: { 512620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 51275baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 5128906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_QualificationConversionLValue ? 51295baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 5130906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_QualificationConversionXValue ? 51315baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 51325baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 5133429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, CK_NoOp, VK); 513420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5135906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 5136906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5137f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 5138f85e193739c953358c865005855253af4f68a497John McCall Sema::CheckedConversionKind CCK 5139f85e193739c953358c865005855253af4f68a497John McCall = Kind.isCStyleCast()? Sema::CCK_CStyleCast 5140f85e193739c953358c865005855253af4f68a497John McCall : Kind.isFunctionalCast()? Sema::CCK_FunctionalCast 5141c8d7f586180995ba33d03c0f6115b6a7bdefe326Richard Smith : Kind.isExplicitCast()? Sema::CCK_OtherCast 5142f85e193739c953358c865005855253af4f68a497John McCall : Sema::CCK_ImplicitConversion; 5143429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5144429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformImplicitConversion(CurInit.get(), Step->Type, *Step->ICS, 5145f85e193739c953358c865005855253af4f68a497John McCall getAssignmentAction(Entity), CCK); 5146429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5147f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5148429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 514920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5150f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 5151dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5152d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 5153429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 515413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Hack: We must pass *ResultType if available in order to set the type 515513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // of arrays, e.g. in 'int ar[] = {1, 2, 3};'. 515613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // But in 'const X &x = {1, 2, 3};' we're supposed to initialize a 515713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // temporary, not a reference, so we should pass Ty. 515813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Worst case: 'const int (&arref)[] = {1, 2, 3};'. 515913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Since this step is never used for a reference directly, we explicitly 516013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // unwrap references here and rewrap them afterwards. 516113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // We also need to create a InitializeTemporary entity for this. 516213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType Ty = ResultType ? ResultType->getNonReferenceType() : Step->Type; 5163cbf82092cdb9e3a2e8528384c878f2084a14981cSebastian Redl bool IsTemporary = Entity.getType()->isReferenceType(); 516413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(Ty); 516513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListChecker PerformInitList(S, IsTemporary ? TempEntity : Entity, 516613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitList, Ty, /*VerifyOnly=*/false, 5167168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 51684e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 516914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (PerformInitList.HadError()) 5170f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5171d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 517213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResultType) { 517313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if ((*ResultType)->isRValueReferenceType()) 517413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getRValueReferenceType(Ty); 517513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else if ((*ResultType)->isLValueReferenceType()) 517613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getLValueReferenceType(Ty, 517713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (*ResultType)->getAs<LValueReferenceType>()->isSpelledAsLValue()); 517813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl *ResultType = Ty; 517913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 518013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 518113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *StructuredInitList = 518213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl PerformInitList.getFullyStructuredList(); 5183d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 518413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(StructuredInitList); 5185d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5186d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 518751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 518810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl case SK_ListConstructorCall: { 5189168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // When an initializer list is passed for a parameter of type "reference 5190168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // to object", we don't get an EK_Temporary entity, but instead an 5191168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // EK_Parameter entity with reference type. 5192bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // FIXME: This is a hack. What we really should do is create a user 5193bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // conversion step for this case, but this makes it considerably more 5194bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // complicated. For now, this will do. 5195168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( 5196168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Entity.getType().getNonReferenceType()); 5197168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool UseTemporary = Entity.getType()->isReferenceType(); 5198f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith assert(Args.size() == 1 && "expected a single argument for list init"); 5199f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *InitList = cast<InitListExpr>(Args.get()[0]); 520003544fccd1782418c1bf2528111683e18f43b913Richard Smith S.Diag(InitList->getExprLoc(), diag::warn_cxx98_compat_ctor_list_init) 520103544fccd1782418c1bf2528111683e18f43b913Richard Smith << InitList->getSourceRange(); 520210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Arg(InitList->getInits(), InitList->getNumInits()); 5203168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity : 5204168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Entity, 5205168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind, move(Arg), *Step, 520610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 520710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl break; 520810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 52098713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 521013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 521113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(cast<InitListExpr>(CurInit.take())->getInit(0)); 521213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 521313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 521413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: { 521513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *E = CurInit.take(); 521613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic = Step->WrappingSyntacticList; 521713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *ILE = new (S.Context) InitListExpr(S.Context, 521813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Syntactic->getLBraceLoc(), &E, 1, Syntactic->getRBraceLoc()); 521913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setSyntacticForm(Syntactic); 522013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setType(E->getType()); 522113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setValueKind(E->getValueKind()); 522213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(ILE); 522313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 522413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 522513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 5226bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl case SK_ConstructorInitialization: { 5227bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // When an initializer list is passed for a parameter of type "reference 5228bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // to object", we don't get an EK_Temporary entity, but instead an 5229bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // EK_Parameter entity with reference type. 5230bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // FIXME: This is a hack. What we really should do is create a user 5231bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // conversion step for this case, but this makes it considerably more 5232bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // complicated. For now, this will do. 5233bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( 5234bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl Entity.getType().getNonReferenceType()); 5235bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl bool UseTemporary = Entity.getType()->isReferenceType(); 5236bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity 5237bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl : Entity, 5238bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl Kind, move(Args), *Step, 523910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 524051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5241bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl } 5242dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 524371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 524416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 524516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 5246dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (NextStep != StepEnd && 5247f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith (NextStep->Kind == SK_ConstructorInitialization || 5248f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith NextStep->Kind == SK_ListConstructorCall)) { 524916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 525016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 525116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 525216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 52534e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().CPlusPlus && 525416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 5255ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 5256ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor if (!TSInfo) 5257dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TSInfo = S.Context.getTrivialTypeSourceInfo(Step->Type, 5258ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor Kind.getRange().getBegin()); 5259ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor 5260ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor CurInit = S.Owned(new (S.Context) CXXScalarValueInitExpr( 5261ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo->getType().getNonLValueExprType(S.Context), 5262ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo, 526371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 526416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 526571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 526616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 526771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 526871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 526918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 527018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 5271429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get()->getType(); 5272429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = move(CurInit); 527318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 5274429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckSingleAssignmentConstraints(Step->Type, Result); 5275429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 5276429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 5277429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(Result); 5278aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5279aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 5280429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = move(CurInit); 5281aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 5282aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 5283429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExprRes) 5284aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 5285aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 5286429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5287429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 5288429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 5289aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5290a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 529118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 529218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 5293429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get(), 5294a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 5295a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 5296a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 5297f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5298a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 5299a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 530018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 530118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 5302cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 5303cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 5304cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 5305429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CheckStringInit(CurInit.get(), ResultType ? *ResultType : Ty, 5306fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall S.Context.getAsArrayType(Ty), S); 5307cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 5308cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 5309569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 5310569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 5311429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, 53122de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_ObjCObjectLValueCast, 5313c1c0dfb376b829b94d4c61e9f358ce23e6aa3169Eli Friedman CurInit.get()->getValueKind()); 5314569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 5315cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5316cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 5317cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Okay: we checked everything before creating this step. Note that 5318cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // this is a GNU extension. 5319cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), diag::ext_array_init_copy) 5320429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << Step->Type << CurInit.get()->getType() 5321429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 5322cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5323cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the destination type is an incomplete array type, update the 5324cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type accordingly. 5325cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (ResultType) { 5326cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const IncompleteArrayType *IncompleteDest 5327cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = S.Context.getAsIncompleteArrayType(Step->Type)) { 5328cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ConstantArrayType *ConstantSource 5329429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley = S.Context.getAsConstantArrayType(CurInit.get()->getType())) { 5330cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor *ResultType = S.Context.getConstantArrayType( 5331cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor IncompleteDest->getElementType(), 5332cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ConstantSource->getSize(), 5333cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ArrayType::Normal, 0); 5334cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5335cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5336cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5337f85e193739c953358c865005855253af4f68a497John McCall break; 5338cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 53390f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 53400f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // Okay: we checked everything before creating this step. Note that 53410f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // this is a GNU extension. 53420f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Diag(Kind.getLocation(), diag::ext_array_init_parens) 53430f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith << CurInit.get()->getSourceRange(); 53440f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith break; 53450f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 5346f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 5347f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 5348f85e193739c953358c865005855253af4f68a497John McCall checkIndirectCopyRestoreSource(S, CurInit.get()); 5349f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(new (S.Context) 5350f85e193739c953358c865005855253af4f68a497John McCall ObjCIndirectCopyRestoreExpr(CurInit.take(), Step->Type, 5351f85e193739c953358c865005855253af4f68a497John McCall Step->Kind == SK_PassByIndirectCopyRestore)); 5352f85e193739c953358c865005855253af4f68a497John McCall break; 5353f85e193739c953358c865005855253af4f68a497John McCall 5354f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 5355f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, Step->Type, 535633e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall CK_ARCProduceObject, 5357f85e193739c953358c865005855253af4f68a497John McCall CurInit.take(), 0, VK_RValue)); 5358cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 53592b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 53602b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: { 53612b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType Dest = Step->Type; 53622b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 53632b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl bool Success = S.isStdInitializerList(Dest, &E); 53642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl (void)Success; 53652b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(Success && "Destination type changed?"); 53662835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl 53672835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl // If the element type has a destructor, check it. 53682835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (CXXRecordDecl *RD = E->getAsCXXRecordDecl()) { 53692835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (!RD->hasIrrelevantDestructor()) { 53702835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (CXXDestructorDecl *Destructor = S.LookupDestructor(RD)) { 53712835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.MarkFunctionReferenced(Kind.getLocation(), Destructor); 53722835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.CheckDestructorAccess(Kind.getLocation(), Destructor, 53732835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.PDiag(diag::err_access_dtor_temp) << E); 53742835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.DiagnoseUseOfDecl(Destructor, Kind.getLocation()); 53752835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53762835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53772835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53782835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl 53792b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr *ILE = cast<InitListExpr>(CurInit.take()); 538003544fccd1782418c1bf2528111683e18f43b913Richard Smith S.Diag(ILE->getExprLoc(), diag::warn_cxx98_compat_initializer_list_init) 538103544fccd1782418c1bf2528111683e18f43b913Richard Smith << ILE->getSourceRange(); 53822b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl unsigned NumInits = ILE->getNumInits(); 53832b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl SmallVector<Expr*, 16> Converted(NumInits); 53842b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 53852b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 53862b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 53872b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl NumInits), 53882b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 53892b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element =InitializedEntity::InitializeElement(S.Context, 53902b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 53912b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl for (unsigned i = 0; i < NumInits; ++i) { 53922b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 53932b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Init = S.Owned(ILE->getInit(i)); 53942b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Res = S.PerformCopyInitialization(Element, 53952b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Init.get()->getExprLoc(), 53962b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Init); 53972b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(!Res.isInvalid() && "Result changed since try phase."); 53982b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Converted[i] = Res.take(); 53992b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 54002b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr *Semantic = new (S.Context) 54012b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr(S.Context, ILE->getLBraceLoc(), 54022b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Converted.data(), NumInits, ILE->getRBraceLoc()); 54032b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Semantic->setSyntacticForm(ILE); 54042b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Semantic->setType(Dest); 540532cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl Semantic->setInitializesStdInitializerList(); 54062b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl CurInit = S.Owned(Semantic); 54072b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 54082b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 540920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 541020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 541115d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall 541215d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall // Diagnose non-fatal problems with the completed initialization. 541315d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall if (Entity.getKind() == InitializedEntity::EK_Member && 541415d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl())->isBitField()) 541515d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall S.CheckBitFieldInitialization(Kind.getLocation(), 541615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl()), 541715d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall CurInit.get()); 5418dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 541920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return move(CurInit); 542020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 542120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 542220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 542320093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 542420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 5425dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumibool InitializationSequence::Diagnose(Sema &S, 542620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 542720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 542820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 5429d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 543020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 5431dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5432d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 543320093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 543420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 54359db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 54369db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 54379db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 54389db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 54399db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 54409db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 54419db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 544220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5443dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 544420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 544520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 544620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 544720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 544820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5450cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5451cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5452cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), 5453cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor (Failure == FK_ArrayTypeMismatch 5454cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ? diag::err_array_init_different_type 5455cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor : diag::err_array_init_non_constant_array)) 5456cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << DestType.getNonReferenceType() 5457cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getType() 5458cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getSourceRange(); 5459cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5460cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 546173076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 546273076431605556fdbf28d287d084a73a24a8b8d4John McCall S.Diag(Kind.getLocation(), diag::err_variable_object_no_init) 546373076431605556fdbf28d287d084a73a24a8b8d4John McCall << Args[0]->getSourceRange(); 546473076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 546573076431605556fdbf28d287d084a73a24a8b8d4John McCall 54666bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 54676bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 5468dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.ResolveAddressOfOverloadedFunction(Args[0], 546920093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 54706bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 54716bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 547220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 54736bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 5474dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 547520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 54764a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 547720093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 547820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 547918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 548018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 548118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 548218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 548318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 548418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 548518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 548618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 548718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 548813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 548913a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 549020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5491dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 549220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 549320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 549420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 549520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 549613a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, 549713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 549820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5499dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 550020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 550120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 550220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 550320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 550420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 5505120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 55068fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best, 55078fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor true); 550820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 55096c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 551020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 55119f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 551220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 551320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 551420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5515dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 551620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 55179f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 551820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 551920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5520dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 552120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 552213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (isa<InitListExpr>(Args[0])) { 552313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Diag(Kind.getLocation(), 552413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl diag::err_lvalue_reference_bind_to_initlist) 552513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType().isVolatileQualified() 552613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType() 552713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << Args[0]->getSourceRange(); 552813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 552913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 553013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Intentional fallthrough 553113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 553220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5533dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Kind.getLocation(), 553420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 553520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 553620093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 5537ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 553820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 553920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 554020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 554120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5542dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 554320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 554420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 5545fb5d7efc279335bde2cdc0a73da525d6b28201e9Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getType() 554620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 554720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5548dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 554920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 555020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 555120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 555220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 555320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 555420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5555dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 555620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 555720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 555820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 55597eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 556020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 556120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 5562926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5563926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5564926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 556520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5566dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 55671be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor case FK_ConversionFailed: { 55681be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor QualType FromType = Args[0]->getType(); 55696efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu PartialDiagnostic PDiag = S.PDiag(diag::err_init_conversion_failed) 557018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 557120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 55727eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 55731be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor << FromType 557420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 55756efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.HandleFunctionTypeMismatch(PDiag, FromType, DestType); 55766efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.Diag(Kind.getLocation(), PDiag); 5577926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5578926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5579926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 5580d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 55811be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor } 5582429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5583429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5584429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley // No-op. This error has already been reported. 5585429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5586429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5587d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 558899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 558999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 559099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 559119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(InitList->getInit(0)->getLocEnd(), 559299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 5593dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi else 559419311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(Args[0]->getLocEnd(), Args[NumArgs - 1]->getLocEnd()); 5595d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 559619311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R.setBegin(S.PP.getLocForEndOfToken(R.getBegin())); 559719311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor if (Kind.isCStyleOrFunctionalCast()) 559819311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_builtin_func_cast_more_than_one_arg) 559919311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << R; 560019311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor else 560119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 560219311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << /*scalar=*/2 << R; 5603d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5604d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 5605d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5606d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 5607d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 5608d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 5609d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5610d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5611d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 5612d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 5613d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 5614d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5615dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5616cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 561751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 561851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 561951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 5620dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ArgsRange = SourceRange(Args[0]->getLocStart(), 562151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 5622dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5623cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl if (Failure == FK_ListConstructorOverloadFailed) { 5624cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl assert(NumArgs == 1 && "List construction from other than 1 argument."); 5625cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitListExpr *InitList = cast<InitListExpr>(Args[0]); 5626cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl Args = InitList->getInits(); 5627cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl NumArgs = InitList->getNumInits(); 5628cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl } 5629cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl 563051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 563151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 563251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 563351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 563451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 563551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 5636120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 563713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 563851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5639dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 564051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 56419db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 56429db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 56439db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 56449db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 56459db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 56469db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 56479db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 56489db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 56499db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 56509db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 56519db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 56529db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 56539db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56549db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56559db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 56569db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 56579db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 56589db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 56599db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 56609db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 56619db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 56629db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 56639db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 56649db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 56659db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56669db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56679db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 56689db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 56699db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 56709db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 56719db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 56729db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 5673dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Record->getDecl()->getLocation(), 56749db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 56759db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 56769db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 56779db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 56789db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 56799db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 568051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 568151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 568213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, 568313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 568451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5685dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 568651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 568751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 5688120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 5689120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 5690e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor if (Ovl != OR_Deleted) { 5691e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 5692e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor << true << DestType << ArgsRange; 569351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 5694e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor break; 569551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5696e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor 5697e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // If this is a defaulted or implicitly-declared function, then 5698e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // it was implicitly deleted. Make it clear that the deletion was 5699e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // implicit. 57006c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith if (S.isImplicitlyDeleted(Best->Function)) 5701e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_special_init) 57026c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith << S.getSpecialMember(cast<CXXMethodDecl>(Best->Function)) 5703e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor << DestType << ArgsRange; 57046c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith else 57056c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 57066c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith << true << DestType << ArgsRange; 57076c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith 57086c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 570951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 571051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5711dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 571251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 571351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 571451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 571551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 57169fdefb338ead088dd7a5dd4ff3df807586b26d41David Blaikie break; 5717dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 571899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 57199db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 57209db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 57219db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 57229db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 57239db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 57249db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 57259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 57269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 57279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 57289db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 57299db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 57309db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 57319db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 57329db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 57339db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 57349db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 57359db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 573699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 5737dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 57388713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_Incomplete: 573969a30b838c723cb1850de55cfa48a402cfeeb6e0Douglas Gregor S.RequireCompleteType(Kind.getLocation(), FailedIncompleteType, 57408713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl diag::err_init_incomplete_type); 57418713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 57428713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 574314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl case FK_ListInitializationFailed: { 574414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Run the init list checker again to emit diagnostics. 574514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 574614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType DestType = Entity.getType(); 574714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker DiagnoseInitList(S, Entity, InitList, 5748c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/false, 5749168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 57504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 575114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(DiagnoseInitList.HadError() && 575214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Inconsistent init list check result."); 575314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl break; 575414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 57555acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 57565acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: { 57575acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: Already diagnosed! 57585acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 57595acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 57602b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 57612b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: { 57622b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Try to perform all copies again. 57632b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 57642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl unsigned NumInits = InitList->getNumInits(); 57652b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType DestType = Entity.getType(); 57662b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 57672b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl bool Success = S.isStdInitializerList(DestType, &E); 57682b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl (void)Success; 57692b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(Success && "Where did the std::initializer_list go?"); 57702b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 57712b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 57722b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 57732b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl NumInits), 57742b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 57752b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element = InitializedEntity::InitializeElement(S.Context, 57762b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 57772b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Show at most 3 errors. Otherwise, you'd get a lot of errors for errors 57782b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // where the init list type is wrong, e.g. 57792b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // std::initializer_list<void*> list = { 1, 2, 3, 4, 5, 6, 7, 8 }; 57802b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // FIXME: Emit a note if we hit the limit? 57812b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl int ErrorCount = 0; 57822b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl for (unsigned i = 0; i < NumInits && ErrorCount < 3; ++i) { 57832b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 57842b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Init = S.Owned(InitList->getInit(i)); 57852b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl if (S.PerformCopyInitialization(Element, Init.get()->getExprLoc(), Init) 57862b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl .isInvalid()) 57872b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ++ErrorCount; 57882b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 57892b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 57902b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 579170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 579270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: { 579370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl S.Diag(Kind.getLocation(), diag::err_selected_explicit_constructor) 579470e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl << Args[0]->getSourceRange(); 579570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OverloadCandidateSet::iterator Best; 579670e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OverloadingResult Ovl 579770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 5798e7d0bbfa101d0f0b955c04c417b5e3283497a7edMatt Beaumont-Gay (void)Ovl; 579970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl assert(Ovl == OR_Success && "Inconsistent overload resolution"); 580070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 580170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl S.Diag(CtorDecl->getLocation(), diag::note_constructor_declared_here); 580270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl break; 580370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl } 580420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5805dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5806a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 580720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 580820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 580918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 58105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid InitializationSequence::dump(raw_ostream &OS) const { 5811de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 5812de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 5813de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 5814de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 5815de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 5816de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 5817de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5818dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5819de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 5820de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 5821de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5822dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5823de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 5824de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 5825de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5826dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5827cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5828cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array type mismatch"; 5829cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5830cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5831cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5832cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "non-constant array initializer"; 5833cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5834cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5835de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 5836de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 5837de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5838dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5839de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 5840de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 5841de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5842dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5843de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 5844de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 5845de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5846dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5847de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5848de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 5849de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5850dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5851de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 5852de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 5853de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5854dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5855de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 5856de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 5857de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5858dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5859de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 5860de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 5861de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5862dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5863de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 5864de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 5865de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5866dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5867429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5868429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley OS << "conversion from property failed"; 5869429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5870429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5871de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 5872de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 5873de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5874dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5875de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 5876de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 5877de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5878dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5879de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 5880de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 5881de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5882dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5883de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 5884de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 5885de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5886dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5887de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 5888de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 5889de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5890dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5891de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 5892de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 5893de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5894dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 589572a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 589672a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor OS << "initialization of incomplete type"; 589772a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 58988713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 58998713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 590014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl OS << "list initialization checker failure"; 59015acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 59025acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 590373076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 590473076431605556fdbf28d287d084a73a24a8b8d4John McCall OS << "variable length array has an initializer"; 590573076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 590673076431605556fdbf28d287d084a73a24a8b8d4John McCall 59075acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 59085acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall OS << "initializer expression isn't contextually valid"; 59095acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 5910b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky 5911b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky case FK_ListConstructorOverloadFailed: 5912b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky OS << "list constructor overloading failed"; 5913b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky break; 59142b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 59152b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: 59162b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl OS << "copy construction of initializer list element failed"; 59172b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 591870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 591970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: 592070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OS << "list copy initialization chose explicit constructor"; 592170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl break; 5922dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 5923de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 5924de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5925de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5926dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5927de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 59287491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Dependent sequence\n"; 5929de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5930dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 59317491c499e826682e128a400038361ebcbde30eecSebastian Redl case NormalSequence: 59327491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Normal sequence: "; 5933de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5934de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5935dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5936de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 5937de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 5938de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 5939de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5940dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5941de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 5942de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 5943de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 5944de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5945dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5946de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 5947de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 5948de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5949dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5950906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 5951906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "derived-to-base case (xvalue" << S->Type.getAsString() << ")"; 5952906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 5953dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5954de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 5955de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 5956de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5957dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5958de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 5959de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 5960de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5961dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5962de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 5963de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 5964de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5965dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5966523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 5967523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 5968523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 5969523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 5970de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 5971b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << "user-defined conversion via " << *S->Function.Function; 5972de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5973906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5974de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 5975de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 597613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5977de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 5978906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5979906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "qualification conversion (xvalue)"; 598013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5981906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5982de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 5983de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 5984de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5985dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5986de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 5987de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 5988de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 5989de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 5990de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5991dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5992de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 59938713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list aggregate initialization"; 59948713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 59958713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 59968713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 59978713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list initialization via constructor"; 5998de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5999dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 600013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 600113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "unwrap reference initializer list"; 600213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 600313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 600413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 600513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "rewrap reference initializer list"; 600613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 600713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 6008de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 6009de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 6010de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6011dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 6012de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 6013de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 6014de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6015dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 6016de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 6017de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 6018de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6019dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 6020de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 6021de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 6022de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6023569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 6024569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 6025569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor OS << "Objective-C object conversion"; 6026569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 6027cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 6028cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 6029cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array initialization"; 6030cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 6031f85e193739c953358c865005855253af4f68a497John McCall 60320f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 60330f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith OS << "parenthesized array initialization"; 60340f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith break; 60350f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 6036f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 6037f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect copy and restore"; 6038f85e193739c953358c865005855253af4f68a497John McCall break; 6039f85e193739c953358c865005855253af4f68a497John McCall 6040f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 6041f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect restore"; 6042f85e193739c953358c865005855253af4f68a497John McCall break; 6043f85e193739c953358c865005855253af4f68a497John McCall 6044f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 6045f85e193739c953358c865005855253af4f68a497John McCall OS << "Objective-C object retension"; 6046f85e193739c953358c865005855253af4f68a497John McCall break; 60472b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 60482b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: 60492b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl OS << "std::initializer_list from initializer list"; 60502b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 6051de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 6052de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 6053de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 6054de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 6055de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 6056de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 6057de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 6058de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 60594c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smithstatic void DiagnoseNarrowingInInitList(Sema &S, InitializationSequence &Seq, 60604c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith QualType EntityType, 60614c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const Expr *PreInit, 60624c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const Expr *PostInit) { 60634c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (Seq.step_begin() == Seq.step_end() || PreInit->isValueDependent()) 60644c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60654c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60664c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A narrowing conversion can only appear as the final implicit conversion in 60674c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // an initialization sequence. 60684c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const InitializationSequence::Step &LastStep = Seq.step_end()[-1]; 60694c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (LastStep.Kind != InitializationSequence::SK_ConversionSequence) 60704c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60714c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60724c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const ImplicitConversionSequence &ICS = *LastStep.ICS; 60734c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const StandardConversionSequence *SCS = 0; 60744c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith switch (ICS.getKind()) { 60754c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::StandardConversion: 60764c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SCS = &ICS.Standard; 60774c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60784c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::UserDefinedConversion: 60794c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SCS = &ICS.UserDefined.After; 60804c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60814c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::AmbiguousConversion: 60824c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::EllipsisConversion: 60834c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::BadConversion: 60844c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60854c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith } 60864c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60874c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // Determine the type prior to the narrowing conversion. If a conversion 60884c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // operator was used, this may be different from both the type of the entity 60894c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // and of the pre-initialization expression. 60904c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith QualType PreNarrowingType = PreInit->getType(); 60914c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (Seq.step_begin() + 1 != Seq.step_end()) 60924c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith PreNarrowingType = Seq.step_end()[-2].Type; 60934c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60944c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // C++11 [dcl.init.list]p7: Check whether this is a narrowing conversion. 60954c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith APValue ConstantValue; 6096f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith QualType ConstantType; 6097f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith switch (SCS->getNarrowingKind(S.Context, PostInit, ConstantValue, 6098f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith ConstantType)) { 60994c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Not_Narrowing: 61004c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // No narrowing occurred. 61014c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 61024c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61034c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Type_Narrowing: 61044c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // This was a floating-to-integer conversion, which is always considered a 61054c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // narrowing conversion even if the value is a constant and can be 61064c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // represented exactly as an integer. 61074c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 61084e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6109f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_type_narrowing 6110f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6111f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_type_narrowing_sfinae 6112f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_type_narrowing) 61134c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61144c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PreNarrowingType.getLocalUnqualifiedType() 61154c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << EntityType.getLocalUnqualifiedType(); 61164c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 61174c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61184c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Constant_Narrowing: 61194c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A constant value was narrowed. 61204c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 61214e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6122f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_constant_narrowing 6123f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6124f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_constant_narrowing_sfinae 6125f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_constant_narrowing) 61264c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 6127f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith << ConstantValue.getAsString(S.getASTContext(), ConstantType) 61289906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 61294c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 61304c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61314c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Variable_Narrowing: 61324c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A variable's value may have been narrowed. 61334c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 61344e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6135f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_variable_narrowing 6136f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6137f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_variable_narrowing_sfinae 6138f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_variable_narrowing) 61394c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61404c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PreNarrowingType.getLocalUnqualifiedType() 61419906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 61424c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 61434c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith } 6144191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 6145f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> StaticCast; 6146191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::raw_svector_ostream OS(StaticCast); 6147191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << "static_cast<"; 6148191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (const TypedefType *TT = EntityType->getAs<TypedefType>()) { 6149191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // It's important to use the typedef's name if there is one so that the 6150191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // fixit doesn't break code using types like int64_t. 6151191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // 6152191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // FIXME: This will break if the typedef requires qualification. But 6153191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // getQualifiedNameAsString() includes non-machine-parsable components. 6154b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << *TT->getDecl(); 6155191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else if (const BuiltinType *BT = EntityType->getAs<BuiltinType>()) 61564e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie OS << BT->getName(S.getLangOpts()); 6157191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin else { 6158191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Oops, we didn't find the actual type of the variable. Don't emit a fixit 6159191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // with a broken cast. 6160191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return; 6161191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 6162191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << ">("; 61634c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), diag::note_init_list_narrowing_override) 61644c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61654c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << FixItHint::CreateInsertion(PostInit->getLocStart(), OS.str()) 6166191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << FixItHint::CreateInsertion( 61674c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.getPreprocessor().getLocForEndOfToken(PostInit->getLocEnd()), ")"); 6168191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin} 6169191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 617018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 617118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 617218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 61732be7e90b81509204b99b7bbf9753ad17b894a12aSean Huntbool 61742be7e90b81509204b99b7bbf9753ad17b894a12aSean HuntSema::CanPerformCopyInitialization(const InitializedEntity &Entity, 61752be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt ExprResult Init) { 61762be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt if (Init.isInvalid()) 61772be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt return false; 61782be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 61792be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt Expr *InitE = Init.get(); 61802be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt assert(InitE && "No initialization expression"); 61812be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 61823c394c54511b27be0ff6968f159bba3521ab3c3eDouglas Gregor InitializationKind Kind 61833c394c54511b27be0ff6968f159bba3521ab3c3eDouglas Gregor = InitializationKind::CreateCopy(InitE->getLocStart(), SourceLocation()); 61842be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 6185383616cd2e61131a534afd9364ef53f643e1f834Sebastian Redl return !Seq.Failed(); 61862be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt} 61872be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 6188dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 618918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 619018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 6191191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ExprResult Init, 6192ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool TopLevelOfInitList, 6193ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicit) { 619418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 619518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 619618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 619715d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall Expr *InitE = Init.get(); 619818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 619918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 620018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 620118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 620218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 620318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 6204ed878af7914df535b32d64f555fa118413186672Douglas Gregor EqualLoc, 6205ed878af7914df535b32d64f555fa118413186672Douglas Gregor AllowExplicit); 620618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 620718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 6208191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 62094c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith ExprResult Result = Seq.Perform(*this, Entity, Kind, MultiExprArg(&InitE, 1)); 62104c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 62114c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (!Result.isInvalid() && TopLevelOfInitList) 62124c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith DiagnoseNarrowingInInitList(*this, Seq, Entity.getType(), 62134c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith InitE, Result.get()); 62144c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 62154c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return Result; 621618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 6217