SemaInit.cpp revision 70e24fccc8ef4aa8be03a778e9655bfcfa79dd14
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 378d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 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); 690d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor } else if (DeclType->isAggregateType()) { 691d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor if (DeclType->isRecordType()) { 6926217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 6932bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 6944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubobjectIsDesignatorContext, Index, 695eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 696eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 69787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } else if (DeclType->isArrayType()) { 698f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor llvm::APSInt Zero( 6990820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 700f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor false); 701dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, DeclType, Zero, 702784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson SubobjectIsDesignatorContext, Index, 7034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 704ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else 705b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("Aggregate that isn't a structure or array?!"); 706613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 707613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 7084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 70914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 71014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 71114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 712d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 713930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isRecordType()) { 714930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init]p14: 715930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] If the class is an aggregate (8.5.1), and the initializer 716930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // is a brace-enclosed list, see 8.5.1. 717930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 718930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Note: 8.5.1 is handled below; here, we diagnose the case where 719930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // we have an initializer list and a destination type that is not 720930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an aggregate. 721930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // FIXME: In C++0x, this is yet another form of initialization. 72214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 72314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 72414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << IList->getSourceRange(); 725930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 726930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 7278ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 7288ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 729c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (DeclType->isObjCObjectType()) { 73014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 73114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_objc_class) 73214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7334d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7340cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 73514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 73614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 73714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7384d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7390cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 7400cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 7410cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 7428ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 74346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 7454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 7464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 7486fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 749c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 750c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman unsigned newIndex = 0; 7514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 7521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *newStructuredList 7534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor = getStructuredSubobjectInit(IList, Index, ElemType, 7544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex, 7554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubInitList->getSourceRange()); 75646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 7574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor newStructuredList, newStructuredIndex); 7584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 7594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 760fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 761c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (ElemType->isScalarType()) { 762fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckScalarType(Entity, IList, ElemType, Index, 763fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 764930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 765fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckReferenceType(Entity, IList, ElemType, Index, 766fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 767fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 768930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 769fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (const ArrayType *arrayType = SemaRef.Context.getAsArrayType(ElemType)) { 770fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // arrayType can be incomplete if we're initializing a flexible 771fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // array member. There's nothing we can do with the completed 772fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // type here, though. 773930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 774fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Expr *Str = IsStringInit(expr, arrayType, SemaRef.Context)) { 7758a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman if (!VerifyOnly) { 7768a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, ElemType, arrayType, SemaRef); 7778a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 7788a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman } 779fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 780fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 781930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 782930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 783fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization. 784fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 7854e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (SemaRef.getLangOpts().CPlusPlus) { 786930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 787fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // All implicit type conversions (clause 4) are considered when 7885d3d41d0873d51b405972baf38e1f3a7ef5b49e0Sebastian Redl // initializing the aggregate member with an initializer from 789fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // an initializer-list. If the initializer can initialize a 790fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // member, the member is initialized. [...] 791fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 792fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // FIXME: Better EqualLoc? 793fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind Kind = 794fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 795fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 796fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 797fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Seq) { 79814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 799b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith ExprResult Result = 800b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Seq.Perform(SemaRef, Entity, Kind, MultiExprArg(&expr, 1)); 801b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith if (Result.isInvalid()) 802b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith hadError = true; 80314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 80414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 805b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Result.takeAs<Expr>()); 80614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 807fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 808fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 809fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 810fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 811fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 812fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 813fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C99 6.7.8p13: 8141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 815fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // The initializer for a structure or union object that has 816fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // automatic storage duration shall be either an initializer 817fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // list as described below, or a single expression that has 818fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // compatible structure or union type. In the latter case, the 819fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // initial value of the object, including unnamed members, is 820fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // that of the expression. 821429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult ExprRes = SemaRef.Owned(expr); 822fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if ((ElemType->isRecordType() || ElemType->isVectorType()) && 82314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.CheckSingleAssignmentConstraints(ElemType, ExprRes, 82414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !VerifyOnly) 825fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall == Sema::Compatible) { 826429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 827429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 828429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley else { 829429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes = SemaRef.DefaultFunctionArrayLvalueConversion(ExprRes.take()); 830429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 831429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 832429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 833429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley UpdateStructuredListElement(StructuredList, StructuredIndex, 834429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.takeAs<Expr>()); 835930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 836fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 837930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 838429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.release(); 839fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 840fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 841fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 842fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C++ [dcl.init.aggr]p12: 843fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // 844fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // [...] Otherwise, if the member is itself a non-empty 845fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // subaggregate, brace elision is assumed and the initializer is 846fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // considered for the initialization of the first member of 847fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // the subaggregate. 8484e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().OpenCL && 84961b4bc80e943578ae855810918a1dc9697dbd15bTanya Lattner (ElemType->isAggregateType() || ElemType->isVectorType())) { 850fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 851fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredIndex); 852fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 853fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 85414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 85514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // We cannot initialize this element, so let 85614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // PerformCopyInitialization produce the appropriate diagnostic. 85714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 85814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 85914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 86014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 861fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall hadError = true; 862fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 863fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 864930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 865b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 866b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 8670c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedmanvoid InitListChecker::CheckComplexType(const InitializedEntity &Entity, 8680c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 8690c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 8700c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 8710c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex) { 8720c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(Index == 0 && "Index in explicit init list must be zero"); 8730c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8740c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // As an extension, clang supports complex initializers, which initialize 8750c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number component-wise. When an explicit initializer list for 8760c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number contains two two initializers, this extension kicks in: 8770c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // it exepcts the initializer list to contain two elements convertible to 8780c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the element type of the complex type. The first element initializes 8790c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the real part, and the second element intitializes the imaginary part. 8800c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (IList->getNumInits() != 2) 8820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman return CheckScalarType(Entity, IList, DeclType, Index, StructuredList, 8830c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredIndex); 8840c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8850c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // This is an extension in C. (The builtin _Complex type does not exist 8860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // in the C++ standard.) 8874e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().CPlusPlus && !VerifyOnly) 8880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman SemaRef.Diag(IList->getLocStart(), diag::ext_complex_component_init) 8890c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman << IList->getSourceRange(); 8900c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8910c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Initialize the complex number. 8920c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman QualType elementType = DeclType->getAs<ComplexType>()->getElementType(); 8930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity ElementEntity = 8940c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8960c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman for (unsigned i = 0; i < 2; ++i) { 8970c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman ElementEntity.setElementIndex(Index); 8980c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckSubElementType(ElementEntity, IList, elementType, Index, 8990c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 9000c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } 9010c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman} 9020c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 9030c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 9048ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 90546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 9066fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 9074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 909b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Index >= IList->getNumInits()) { 9106b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith if (!VerifyOnly) 9116b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith SemaRef.Diag(IList->getLocStart(), 9124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie SemaRef.getLangOpts().CPlusPlus0x ? 9136b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::warn_cxx98_compat_empty_scalar_initializer : 9146b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::err_empty_scalar_initializer) 9156b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith << IList->getSourceRange(); 9164e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie hadError = !SemaRef.getLangOpts().CPlusPlus0x; 9174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 9184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 919bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 9200cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 921b934c2d77144471f35c5ebae9e925b056dac8112John McCall 922b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *expr = IList->getInit(Index); 923b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { 92414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 92514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(SubIList->getLocStart(), 92614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::warn_many_braces_around_scalar_init) 92714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SubIList->getSourceRange(); 928b934c2d77144471f35c5ebae9e925b056dac8112John McCall 929b934c2d77144471f35c5ebae9e925b056dac8112John McCall CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, 930b934c2d77144471f35c5ebae9e925b056dac8112John McCall StructuredIndex); 931b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 932b934c2d77144471f35c5ebae9e925b056dac8112John McCall } else if (isa<DesignatedInitExpr>(expr)) { 93314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 93496a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(expr->getLocStart(), 93514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_for_scalar_init) 93614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << expr->getSourceRange(); 937b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; 938b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 939b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 940b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 941b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 942b934c2d77144471f35c5ebae9e925b056dac8112John McCall 94314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 94414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 94514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 94614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 94714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 94814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 94914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 950b934c2d77144471f35c5ebae9e925b056dac8112John McCall ExprResult Result = 951b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 952191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(expr), 953191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 954b934c2d77144471f35c5ebae9e925b056dac8112John McCall 955b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *ResultExpr = 0; 956b934c2d77144471f35c5ebae9e925b056dac8112John McCall 957b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Result.isInvalid()) 958b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; // types weren't compatible. 959b934c2d77144471f35c5ebae9e925b056dac8112John McCall else { 960b934c2d77144471f35c5ebae9e925b056dac8112John McCall ResultExpr = Result.takeAs<Expr>(); 961dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 962b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (ResultExpr != expr) { 963b934c2d77144471f35c5ebae9e925b056dac8112John McCall // The type was promoted, update initializer list. 964b934c2d77144471f35c5ebae9e925b056dac8112John McCall IList->setInit(Index, ResultExpr); 965b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 966b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 967b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (hadError) 968b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 969b934c2d77144471f35c5ebae9e925b056dac8112John McCall else 970b934c2d77144471f35c5ebae9e925b056dac8112John McCall UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 971b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 9720cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 9730cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 9748ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 9758ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 976930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 977930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 978930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 97914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Index >= IList->getNumInits()) { 980390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 981390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 982390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 983390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 98414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 98514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), 98614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_init_reference_member_uninitialized) 98714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType 98814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IList->getSourceRange(); 989930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 990930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 991930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 992930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 993930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 99414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 99514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Expr *expr = IList->getInit(Index); 9964e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (isa<InitListExpr>(expr) && !SemaRef.getLangOpts().CPlusPlus0x) { 99714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 99814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 99914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << IList->getSourceRange(); 100014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 100114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 100214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 100314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 100414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 100514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 100614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 100714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 100814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 100914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 101014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 101114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 101214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ExprResult Result = 101414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 101514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 101614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 101714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Result.isInvalid()) 101914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 102014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 102114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl expr = Result.takeAs<Expr>(); 102214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setInit(Index, expr); 102314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 102414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (hadError) 102514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 102614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 102714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 102814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 1029930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 1030930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 10318ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 103246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 10334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 10344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 10354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 103620e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 103720e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned maxElements = VT->getNumElements(); 103820e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numEltsInit = 0; 103920e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType elementType = VT->getElementType(); 104020e047abc5f19dc948436c0fb891450d9cd40667John McCall 10413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Make sure the element type can be value-initialized. 10433ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10443ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 10453ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity)); 10463ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl return; 10473ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 10483ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 10494e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().OpenCL) { 105020e047abc5f19dc948436c0fb891450d9cd40667John McCall // If the initializing element is a vector, try to copy-initialize 105120e047abc5f19dc948436c0fb891450d9cd40667John McCall // instead of breaking it apart (which is doomed to failure anyway). 105220e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *Init = IList->getInit(Index); 105320e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!isa<InitListExpr>(Init) && Init->getType()->isVectorType()) { 105414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 105514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(Init))) 105614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 105714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 105814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 105914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 106014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 106120e047abc5f19dc948436c0fb891450d9cd40667John McCall ExprResult Result = 106220e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.PerformCopyInitialization(Entity, Init->getLocStart(), 1063191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(Init), 1064191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 106520e047abc5f19dc948436c0fb891450d9cd40667John McCall 106620e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *ResultExpr = 0; 106720e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Result.isInvalid()) 106820e047abc5f19dc948436c0fb891450d9cd40667John McCall hadError = true; // types weren't compatible. 106920e047abc5f19dc948436c0fb891450d9cd40667John McCall else { 107020e047abc5f19dc948436c0fb891450d9cd40667John McCall ResultExpr = Result.takeAs<Expr>(); 1071dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 107220e047abc5f19dc948436c0fb891450d9cd40667John McCall if (ResultExpr != Init) { 107320e047abc5f19dc948436c0fb891450d9cd40667John McCall // The type was promoted, update initializer list. 107420e047abc5f19dc948436c0fb891450d9cd40667John McCall IList->setInit(Index, ResultExpr); 10752ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 10762ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 107720e047abc5f19dc948436c0fb891450d9cd40667John McCall if (hadError) 107820e047abc5f19dc948436c0fb891450d9cd40667John McCall ++StructuredIndex; 107920e047abc5f19dc948436c0fb891450d9cd40667John McCall else 108014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 108114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ResultExpr); 108220e047abc5f19dc948436c0fb891450d9cd40667John McCall ++Index; 108320e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 10840cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108620e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 108720e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1088dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 108920e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 109020e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 10913ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10923ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10933ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(ElementEntity); 109420e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 10953ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 1096dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 109720e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 109820e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 109920e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 110020e047abc5f19dc948436c0fb891450d9cd40667John McCall } 110120e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 110220e047abc5f19dc948436c0fb891450d9cd40667John McCall } 110320e047abc5f19dc948436c0fb891450d9cd40667John McCall 110420e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 110520e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1106dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 110720e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL initializers allows vectors to be constructed from vectors. 110820e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i) { 110920e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 111020e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 111120e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 1112dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 111320e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 111420e047abc5f19dc948436c0fb891450d9cd40667John McCall 111520e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType IType = IList->getInit(Index)->getType(); 111620e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!IType->isVectorType()) { 111720e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 111820e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 111920e047abc5f19dc948436c0fb891450d9cd40667John McCall ++numEltsInit; 112020e047abc5f19dc948436c0fb891450d9cd40667John McCall } else { 112120e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType VecType; 112220e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *IVT = IType->getAs<VectorType>(); 112320e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numIElts = IVT->getNumElements(); 1124dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 112520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (IType->isExtVectorType()) 112620e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); 112720e047abc5f19dc948436c0fb891450d9cd40667John McCall else 112820e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getVectorType(elementType, numIElts, 1129e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson IVT->getVectorKind()); 113020e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, VecType, Index, 113120e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 113220e047abc5f19dc948436c0fb891450d9cd40667John McCall numEltsInit += numIElts; 113320e047abc5f19dc948436c0fb891450d9cd40667John McCall } 11340cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 113520e047abc5f19dc948436c0fb891450d9cd40667John McCall 113620e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL requires all elements to be initialized. 11373ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (numEltsInit != maxElements) { 11383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!VerifyOnly) 113996a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(IList->getLocStart(), 11403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl diag::err_vector_incorrect_num_initializers) 11413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl << (numEltsInit < maxElements) << maxElements << numEltsInit; 11423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 11433ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 11440cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11450cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 11468ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 1147784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 114887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 11491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 11504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 11514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 11524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 1153ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = SemaRef.Context.getAsArrayType(DeclType); 1154ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 11550cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 11560cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 1157ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (Expr *Str = IsStringInit(IList->getInit(Index), arrayType, 115879e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 11594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 11604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 11614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 11624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 11634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 116414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 11658a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, DeclType, arrayType, SemaRef); 116614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 116714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 116814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 11690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 11700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 11710cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 11720cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1173ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(arrayType)) { 1174638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 1175638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 1176638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 117714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 117814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 117914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_variable_object_no_init) 118014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << VAT->getSizeExpr()->getSourceRange(); 1181638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 11824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 11834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 1184638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 1185638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 1186638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 118705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 11884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 11894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 119005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 1191ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(arrayType)) { 119205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 11939f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extOrTrunc(maxElements.getBitWidth()); 1194e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 119505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 119605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 119705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1198ce6c9b7da219c8640a0559f75770cfc6622de083John McCall QualType elementType = arrayType->getElementType(); 119905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 120005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 120105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 120287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 120387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 120487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 120587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 120687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 120787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 120887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 120987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 12109a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 12114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 1212eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 1213eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 121405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 121587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 121687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 121787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 1218f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 12199f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad maxElements = maxElements.extend(elementIndex.getBitWidth()); 1220f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 12219f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extend(maxElements.getBitWidth()); 1222e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 1223f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 122487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 122587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 122687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 122787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 122805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 123005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 123105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 123205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 123305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 123405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 12350cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 123605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 12378ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 1238dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 12398ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 12408ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 12418ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 12428ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 124305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 124405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 124505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 124605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 124705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 124805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 12490cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 125014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && DeclType->isIncompleteArrayType() && !VerifyOnly) { 12510cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1252396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1253e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 125405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1255396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1256396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 12570820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1258396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 12590cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1260396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 12611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1262396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 12630cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 12643ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!hadError && VerifyOnly) { 12653ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check if there are any members of the array that get value-initialized. 12663ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // If so, check if doing that is possible. 12673ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: This needs to detect holes left by designated initializers too. 12683ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (maxElementsKnown && elementIndex < maxElements) 12693ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(InitializedEntity::InitializeElement( 12703ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SemaRef.Context, 0, Entity)); 12713ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 12720cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 12730cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1274f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedmanbool InitListChecker::CheckFlexibleArrayInit(const InitializedEntity &Entity, 1275f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, 1276f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FieldDecl *Field, 1277f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject) { 1278f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Handle GNU flexible array initializers. 1279f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman unsigned FlexArrayDiag; 1280f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (isa<InitListExpr>(InitExpr) && 1281f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman cast<InitListExpr>(InitExpr)->getNumInits() == 0) { 1282f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Empty flexible array init always allowed as an extension 1283f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 12844e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (SemaRef.getLangOpts().CPlusPlus) { 1285f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init in C++; it is not required for gcc 1286f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // compatibility, and it needs work to IRGen correctly in general. 1287f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1288f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (!TopLevelObject) { 1289f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on non-top-level object 1290f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1291f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (Entity.getKind() != InitializedEntity::EK_Variable) { 1292f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on anything which is not a variable. 1293f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1294f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (cast<VarDecl>(Entity.getDecl())->hasLocalStorage()) { 1295f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on local variables. 1296f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1297f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else { 1298f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Allow other cases. 1299f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 1300f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } 130114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 130214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 130396a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(InitExpr->getLocStart(), 130414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl FlexArrayDiag) 130596a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar << InitExpr->getLocStart(); 130614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 130714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << Field; 130814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1309f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 1310f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman return FlexArrayDiag != diag::ext_flexible_array_init; 1311f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman} 1312f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 13138ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 13142bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 13151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 131687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 13171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 13184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 13194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1320eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1321eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 13226217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 13231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1324b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1325b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1326b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 1327b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1328b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 13291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 13303498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 13313498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 13323ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Value-initialize the first named member of the union. 13333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 13343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 13353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl Field != FieldEnd; ++Field) { 13363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Field->getDeclName()) { 13373ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 13383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 13393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeMember(*Field, &Entity)); 13403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl else 134114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setInitializedFieldInUnion(*Field); 13423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl break; 13433498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13443498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13453498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 13463498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13473498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 134805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 134905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 135005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 135105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 13526217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 135317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1354dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 135580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 135605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 135705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 135805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 135905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 136087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 136187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 136287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 136387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 136487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 136587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 136687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 136787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 13689a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 13694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1370eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1371eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 137205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 137305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1374dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 137580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 137680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 137780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 137880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 137905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 138005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 138105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 138205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 138305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 138444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 138505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 138644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1387dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1388dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1389dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1390dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 139105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 139205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1393b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 139444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 13950bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 13964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 139705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1398b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 13990cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 140044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 140154001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 140214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 140314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 140414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = !SemaRef.CanUseDecl(*Field); 140514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 140614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, 140714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getInit(Index)->getLocStart()); 140814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 140954001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 141054001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Field; 141154001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor hadError = true; 141254001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor continue; 141314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 141454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 14158ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 14168ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 14178ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14188ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1419dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 14200bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 142114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DeclType->isUnionType() && !VerifyOnly) { 14220bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 14230bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 14240bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 142505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 142605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 14270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 142844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 142980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 143014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && InitializedSomething && CheckForMissingFields && 143114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Field != FieldEnd && !Field->getType()->isIncompleteArrayType() && 143214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DeclType->isUnionType()) { 143380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 143480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 143580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 143680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 143780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 143880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 143980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 144080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 144180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 144280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 144380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 144480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 14453ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check that any remaining fields can be value-initialized. 14463ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly && Field != FieldEnd && !DeclType->isUnionType() && 14473ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl !Field->getType()->isIncompleteArrayType()) { 14483ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: Should check for holes left by designated initializers too. 14493ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (; Field != FieldEnd && !hadError; ++Field) { 14503ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!Field->isUnnamedBitfield()) 14513ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 14523ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeMember(*Field, &Entity)); 14533ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14543ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14553ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 14561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1457a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1458eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1459eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1460f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (CheckFlexibleArrayInit(Entity, IList->getInit(Index), *Field, 1461f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) { 1462eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1463a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1464a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1465eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1466eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 14678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 14688ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1469dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 14708ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 1471dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14728ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 14738ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 1474dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1475987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 14760cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 14770cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1478ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1479ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1480ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1481ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1482ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 14831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 14841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1485a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IndirectFieldDecl *IndirectField) { 1486ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1487ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1488ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 14895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Designator, 4> Replacements; 1490a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet for (IndirectFieldDecl::chain_iterator PI = IndirectField->chain_begin(), 1491a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet PE = IndirectField->chain_end(); PI != PE; ++PI) { 1492a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (PI + 1 == PE) 14931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1494ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1495ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1496ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1497ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1498ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1499a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(isa<FieldDecl>(*PI)); 1500a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Replacements.back().setField(cast<FieldDecl>(*PI)); 1501ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1502ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1503ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1504ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1505ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1506319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1507ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 1508a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet} 15091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1510dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Given an implicit anonymous field, search the IndirectField that 1511a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet/// corresponds to FieldName. 1512a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichetstatic IndirectFieldDecl *FindIndirectFieldDesignator(FieldDecl *AnonField, 1513a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IdentifierInfo *FieldName) { 1514a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(AnonField->isAnonymousStructOrUnion()); 1515a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Decl *NextDecl = AnonField->getNextDeclInContext(); 15163e78b19e51034dd27c6e0d811522148345e299e4Aaron Ballman while (IndirectFieldDecl *IF = 15173e78b19e51034dd27c6e0d811522148345e299e4Aaron Ballman dyn_cast_or_null<IndirectFieldDecl>(NextDecl)) { 1518a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (FieldName && FieldName == IF->getAnonField()->getIdentifier()) 1519a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return IF; 1520a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet NextDecl = NextDecl->getNextDeclInContext(); 1521ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1522a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return 0; 1523ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1524ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 152514b0c194b356a1204d081765b3e6699687bed97cSebastian Redlstatic DesignatedInitExpr *CloneDesignatedInitExpr(Sema &SemaRef, 152614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE) { 152714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned NumIndexExprs = DIE->getNumSubExprs() - 1; 152814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SmallVector<Expr*, 4> IndexExprs(NumIndexExprs); 152914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl for (unsigned I = 0; I < NumIndexExprs; ++I) 153014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IndexExprs[I] = DIE->getSubExpr(I + 1); 153114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return DesignatedInitExpr::Create(SemaRef.Context, DIE->designators_begin(), 153214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->size(), IndexExprs.data(), 153314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl NumIndexExprs, DIE->getEqualOrColonLoc(), 153414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->usesGNUSyntax(), DIE->getInit()); 153514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl} 153614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1537425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainnamespace { 1538425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1539425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// Callback to only accept typo corrections that are for field members of 1540425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// the given struct or union. 1541425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainclass FieldInitializerValidatorCCC : public CorrectionCandidateCallback { 1542425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain public: 1543425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain explicit FieldInitializerValidatorCCC(RecordDecl *RD) 1544425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain : Record(RD) {} 1545425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1546425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain virtual bool ValidateCandidate(const TypoCorrection &candidate) { 1547425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldDecl *FD = candidate.getCorrectionDeclAs<FieldDecl>(); 1548425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain return FD && FD->getDeclContext()->getRedeclContext()->Equals(Record); 1549425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain } 1550425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1551425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain private: 1552425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RecordDecl *Record; 1553425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain}; 1554425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1555425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain} 1556425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 155705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 155805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 155905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 156005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 156105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 156205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 15631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 15644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 156505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 156605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 156705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 156805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1569711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1570711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1571711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 157205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param DeclType The type of the "current object" (C99 6.7.8p17), 157405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 157505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 157787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 157887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 157905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 158087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 158187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 158287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 158305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 158405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 158505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 158605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 15874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 15884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 15894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 15904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 159105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 15921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 15938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 15949a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 159514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE, 159614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned DesigIdx, 159714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType &CurrentObjectType, 159814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl RecordDecl::field_iterator *NextField, 159914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl llvm::APSInt *NextElementIndex, 160014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &Index, 160114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *StructuredList, 160214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &StructuredIndex, 1603eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1604eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1605711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 160687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 160787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 16086fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16096fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 16106fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 16116fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 16126fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 16136fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 16146fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16159a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 16164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 16176fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16186fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 16196fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 16206fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 16216fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 16226fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 16236fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 162487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 162587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 162605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1627711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 162814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool IsFirstDesignator = (DesigIdx == 0); 162914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 163014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert((IsFirstDesignator || StructuredList) && 163114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Need a non-designated initializer list to start from"); 163214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 163314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Determine the structural initializer list that corresponds to the 163414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // current subobject. 1635a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer StructuredList = IsFirstDesignator? SyntacticToSemantic.lookup(IList) 163614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 163714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList, StructuredIndex, 163814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceRange(D->getStartLocation(), 163914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd())); 164014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(StructuredList && "Expected a structured initializer list"); 164114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 16424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 164387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 164487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 164587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 164787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 164987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 165087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 165187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 16521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 16536217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 165487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 165587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 165687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 165787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 165814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 165914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 16604e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie << SemaRef.getLangOpts().CPlusPlus << CurrentObjectType; 166187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 166287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 166387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 166487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 16664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 16674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1668ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 166987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 16704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 167217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 167317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 16744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 16754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 16764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 1677dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1678a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // If we find a field representing an anonymous field, look in the 1679a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // IndirectFieldDecl that follow for the designated initializer. 1680a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField && Field->isAnonymousStructOrUnion()) { 1681a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (IndirectFieldDecl *IF = 1682a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet FindIndirectFieldDesignator(*Field, FieldName)) { 168314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // In verify mode, don't modify the original. 168414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 168514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE = CloneDesignatedInitExpr(SemaRef, DIE); 1686a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, IF); 1687a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet D = DIE->getDesignator(DesigIdx); 1688a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet break; 1689a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1690a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1691022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (KnownField && KnownField == *Field) 1692022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor break; 1693022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (FieldName && FieldName == Field->getIdentifier()) 16944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 16954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 16964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 169787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 169887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1700a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer if (VerifyOnly) { 1701a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer ++Index; 170214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return true; // No typo correction when just trying this out. 1703a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer } 170414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1705ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1706ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1707ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1708ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 17091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 171017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1711c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 17124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1713c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1714c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1715425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldInitializerValidatorCCC Validator(RT->getDecl()); 1716d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor TypoCorrection Corrected = SemaRef.CorrectTypo( 1717d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor DeclarationNameInfo(FieldName, D->getFieldLoc()), 171816e46dd0c284296cea819dfbf67942ecef02894dKaelyn Uhrain Sema::LookupMemberName, /*Scope=*/0, /*SS=*/0, Validator, 1719425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RT->getDecl()); 1720425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain if (Corrected) { 1721d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedStr( 17224e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Corrected.getAsString(SemaRef.getLangOpts())); 1723d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedQuotedStr( 17244e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Corrected.getQuoted(SemaRef.getLangOpts())); 1725425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain ReplacementField = Corrected.getCorrectionDeclAs<FieldDecl>(); 1726dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(D->getFieldLoc(), 1727c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1728d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FieldName << CurrentObjectType << CorrectedQuotedStr 1729d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), CorrectedStr); 1730dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(ReplacementField->getLocation(), 1731d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor diag::note_previous_decl) << CorrectedQuotedStr; 1732a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer hadError = true; 1733c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1734c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1735c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1736c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1737c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1738c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1739c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1740dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1741c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 17424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 17430820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 17444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 17464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1747ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1748ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1749ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1750c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1751a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField) { 1752c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1753c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1754c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1755c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1756c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1757c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1758c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1759c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1760dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (ReplacementField == *Field || 1761c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1762c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1763c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1764c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1765c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1766c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 176787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 17684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 17704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 17710bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 17724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 177314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 177414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setInitializedFieldInUnion(*Field); 17750bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 17764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 177754001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 177814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 177914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 178014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = !SemaRef.CanUseDecl(*Field); 178114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 178214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, D->getFieldLoc()); 178314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 178454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 178554001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor return true; 178614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 178754001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 178814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 178914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the designator with the field declaration. 179014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl D->setField(*Field); 17911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 179214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Make sure that our non-designated initializer list has space 179314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // for a subobject corresponding to this field. 179414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (FieldIndex >= StructuredList->getNumInits()) 179514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 179614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 17974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1798eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1799eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1800eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1801711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1802eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1803eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 180414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 180514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr::Designator *NextD 180614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = DIE->getDesignator(DesigIdx + 1); 180714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(NextD->getStartLocation(), 180814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_into_flexible_array_member) 180914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SourceRange(NextD->getStartLocation(), 181014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd()); 181114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 181214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << *Field; 181314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1814eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1815eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1816eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 18179046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner if (!hadError && !isa<InitListExpr>(DIE->getInit()) && 18189046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner !isa<StringLiteral>(DIE->getInit())) { 1819eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 182014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 182196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(DIE->getInit()->getLocStart(), 182214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_flexible_array_init_needs_braces) 182314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DIE->getInit()->getSourceRange(); 182414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 182514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << *Field; 182614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1827eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1828eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1829eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1830f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Check GNU flexible array initializer. 1831f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (!Invalid && CheckFlexibleArrayInit(Entity, DIE->getInit(), *Field, 1832f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) 1833eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1834eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1835eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1836eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1837eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1838eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1839eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1840eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1841eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1842eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1843eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1844eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 18458ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 18468ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 18478ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 18488ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1849eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 18508ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1851eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1852eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1853eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1854eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1855eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1856eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1857eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1858eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1859eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1860eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1861eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1862eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType FieldType = (*Field)->getType(); 1863eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1864dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18659a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 18668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1867dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 1868dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FieldType, 0, 0, Index, 18699a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1870eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1871eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1872eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 187387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 187487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 187587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 187687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 18774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 187805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 187987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 188087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 188187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 188287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 188387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 18844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 188587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 188687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 188705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 188934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 189034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1891ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1892ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1893ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1894ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 189587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 189687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 1897dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18988ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 18994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 190087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 190187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 190205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 190387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 190487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 190687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 190887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 191087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 191187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 191287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 191387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 191487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 191587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 191687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 191787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 19180820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 191987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 192014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 192114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 192214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << CurrentObjectType; 192387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 192487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 192587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 192605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 192787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 192834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 192934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 193087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 1931a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DesignatedStartIndex = IndexExpr->EvaluateKnownConstInt(SemaRef.Context); 193234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 193334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 193487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 19353bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 19361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 1937a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeStart(*D)->EvaluateKnownConstInt(SemaRef.Context); 19381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 1939a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeEnd(*D)->EvaluateKnownConstInt(SemaRef.Context); 194087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 194134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1942e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // Codegen can't handle evaluating array range designators that have side 1943e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // effects, because we replicate the AST value for each initialized element. 1944e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // As such, set the sawArrayRangeDesignator() bit if we initialize multiple 1945e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // elements with something that has a side effect, so codegen can emit an 1946e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // "error unsupported" error instead of miscompiling the app. 1947e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner if (DesignatedStartIndex.getZExtValue()!=DesignatedEndIndex.getZExtValue()&& 194814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getInit()->HasSideEffects(SemaRef.Context) && !VerifyOnly) 1949a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 195087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 195105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 195287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 195387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 19549f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19559f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 195634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 19579f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19589f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 195934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 196034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 1961a4e20e1e43df39e39328035c84c46fdcbbf3a01eEli Friedman if (!VerifyOnly) 196296a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(IndexExpr->getLocStart(), 196314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_array_designator_too_large) 196414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 196514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IndexExpr->getSourceRange(); 196687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 196787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 196805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 197034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 197134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 19729f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19739f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 19743bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 19753bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 19769f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19779f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 197834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 197934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 198005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 19811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 19834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 198414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && 198514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 19861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 198734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 198834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 199034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 199134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 199234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 199334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 199434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 1995dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19969a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 19978ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 19989a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 199934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 200034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 200134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 200234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 2003dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 20049a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 2005dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 2006dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementType, 0, 0, Index, 20079a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 2008eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 2009eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 201034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 201187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 201234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 201334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 201434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 201534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 201687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 201787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 201887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 201987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 202087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 202134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 20224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 202387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 202487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 20251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 202634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 202734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 202834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 202987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 203005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 2031dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 2032784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 20334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 20341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 203505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 203605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 20374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 20384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 20394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 20404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 20414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 20424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 20434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 20444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 204514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 204614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return 0; // No structured list in verification-only mode. 20474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 20484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 2049a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer ExistingInit = SyntacticToSemantic.lookup(IList); 20504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 20514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 20521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 20544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 20554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 20574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 20584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 20594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 20604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 20611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 20634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 20641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 20664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 20674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 20681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 2069ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 20704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 207196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(ExistingInit->getLocStart(), 20724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 207354f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 20744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 20754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 20764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 2078709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 2079709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitRange.getBegin(), 0, 0, 2080ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 2081ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 20825c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman QualType ResultType = CurrentObjectType; 20835c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman if (!ResultType->isArrayType()) 20845c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman ResultType = ResultType.getNonLValueExprType(SemaRef.Context); 20855c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman Result->setType(ResultType); 20864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2087fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 2088fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 208908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 2090f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis bool GotNumInits = false; 2091f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (!StructuredList) { 209208457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 2093f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2094f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } else if (Index < IList->getNumInits()) { 2095f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) { 209608457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 2097f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2098f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } 209908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 210008457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 21011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 2102fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 2103fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 2104fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 2105fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 2106fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 2107f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (GotNumInits && NumElements > NumInits) 2108fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 2109fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2110183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 2111fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 21126217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 2113fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 2114fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 2115fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 2116fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 21171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 211817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 2119fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2120fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 2121709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 2122fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 21234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 21244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 21254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 2126709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 21274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 21284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 21294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 21304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 21334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 21364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 21374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 21384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 21394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 21404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 21414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 21424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 21434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2144709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 2145709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 21464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 214796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(expr->getLocStart(), 21484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 21494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 215096a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(PrevInit->getLocStart(), 21514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 215254f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 21534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 21544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 21574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 215905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 2160282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// value. This is essentially just a wrapper around 21613bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 216205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 2163282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// failure. Returns the index expression, possibly with an implicit cast 2164282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// added, on success. If everything went okay, Value will receive the 2165282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// value of the constant expression. 2166282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smithstatic ExprResult 21673bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 216896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = Index->getLocStart(); 216905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 2171282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith ExprResult Result = S.VerifyIntegerConstantExpression(Index, &Value); 2172282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (Result.isInvalid()) 2173282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return Result; 21743bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 21753bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 21763bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 217705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 217805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217953d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 2180282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return Result; 218105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 218205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218360d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 21847663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky SourceLocation Loc, 21857663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky bool GNUSyntax, 21867663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky ExprResult Init) { 218705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 218805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 21905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<ASTDesignator, 32> Designators; 21915f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Expr *, 32> InitExpressions; 219205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 219305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 219405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 219505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 219605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 219705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 21981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 219905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 220005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 220105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 220205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 220305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 220405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 2205282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!Index->isTypeDependent() && !Index->isValueDependent()) 2206282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith Index = CheckArrayDesignatorExpr(*this, Index, IndexValue).take(); 2207282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!Index) 220805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 220905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 221005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 221205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 221305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 221405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 221505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 221605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 221705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 221805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 221905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 222005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 222105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 222205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 22239ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 22249ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 22259ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 22269ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 2227282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!StartDependent) 2228282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith StartIndex = 2229282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith CheckArrayDesignatorExpr(*this, StartIndex, StartValue).take(); 2230282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!EndDependent) 2231282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith EndIndex = CheckArrayDesignatorExpr(*this, EndIndex, EndValue).take(); 2232282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 2233282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!StartIndex || !EndIndex) 223405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 2235d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 2236d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 22379ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 22389ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 22399ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 22409f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad EndValue = EndValue.extend(StartValue.getBitWidth()); 2241d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 22429f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad StartValue = StartValue.extend(EndValue.getBitWidth()); 2243d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 2244c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 2245d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 22461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 2247d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 2248d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 2249d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 2250d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 2252d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 2253d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 2254d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 2255d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 2256d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 225705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 225905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 226005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 226105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 226205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 226405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 226505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 226705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 226805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 2270beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 2271beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 2272beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad InitExpressions.data(), InitExpressions.size(), 2273e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson Loc, GNUSyntax, Init.takeAs<Expr>()); 2274dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 22754e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().C99) 22762d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor Diag(DIE->getLocStart(), diag::ext_designated_init) 22772d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor << DIE->getSourceRange(); 2278dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 227905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 228005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 2281c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 2282cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 2283cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 2284cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 228539da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 2286dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 2287cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 2288dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi : Parent(&Parent), Index(Index) 2289cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 2290d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 2291d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 2292d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 22930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (const VectorType *VT = Parent.getType()->getAs<VectorType>()) { 2294d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 22950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = VT->getElementType(); 22960c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else { 22970c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman const ComplexType *CT = Parent.getType()->getAs<ComplexType>(); 22980c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(CT && "Unexpected type"); 22990c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Kind = EK_ComplexElement; 23000c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = CT->getElementType(); 2301d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 230220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 230320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2304dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 2305711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 2306711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 230720093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 230820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 230920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 2310711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 2311711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 2312711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 2313dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2314d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 231520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 231620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 231720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 231899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 231999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 2320f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: { 2321f85e193739c953358c865005855253af4f68a497John McCall ParmVarDecl *D = reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2322f85e193739c953358c865005855253af4f68a497John McCall return (D ? D->getDeclName() : DeclarationName()); 2323f85e193739c953358c865005855253af4f68a497John McCall } 2324a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 2325a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 232699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 232799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 232899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23294773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23304773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor return Capture.Var->getDeclName(); 23314773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor 233299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 233399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 233418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 233599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 233699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 2337059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2338d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2339d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23400c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2341310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 234299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 234399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 2344dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23457530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 234699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 234799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23487abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 23497abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 23507abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 23517abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 23527abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 23537abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 2354f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: 2355f85e193739c953358c865005855253af4f68a497John McCall return reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2356f85e193739c953358c865005855253af4f68a497John McCall 23577abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 23587abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 23597abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 23607abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 23617abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 2362059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2363d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2364d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23650c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2366310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23674773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23687abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 23697abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 2370dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23717530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 23727abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 23737abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 23743c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregorbool InitializedEntity::allowsNRVO() const { 23753c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor switch (getKind()) { 23763c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Result: 23773c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Exception: 23783c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return LocAndNRVO.NRVO; 2379dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23803c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Variable: 23813c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Parameter: 23823c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Member: 23833c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_New: 23843c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Temporary: 23853c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Base: 2386059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 23873c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_ArrayElement: 23883c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_VectorElement: 23890c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2390310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23914773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23923c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor break; 23933c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor } 23943c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 23953c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return false; 23963c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor} 23973c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 239820093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 239920093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 240020093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 240120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 240220093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 240320093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 240420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 240520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 2406906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 240720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 240820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 240920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 2410523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 241120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 241220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 2413906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 241420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 2415d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 24168713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 241713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 241813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 241951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 242071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 242118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2422cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 2423569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 2424cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 24250f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 2426f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 2427f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 2428f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 24292b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: 243020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 2431dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 243220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 243320093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 243420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 243520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 243620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2437b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 24383b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return !Steps.empty() && Steps.back().Kind == SK_BindReference; 2439b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2440b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2441b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2442d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 2443b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2444dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2445b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2446b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2447b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2448b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2449b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2450b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2451b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2452b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2453b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2454b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2455b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2456429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 2457b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2458b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2459b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2460b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 246172a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 2462cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 2463cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 24648713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 246573076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 24665acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 24672b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: 246870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: 2469b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2470dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2471b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2472b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2473b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2474cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 2475b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2476b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2477dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 24787530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 2479b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2480b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2481d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2482d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2483d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2484d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 248522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 248622c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 248722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddAddressOverloadResolutionStep(FunctionDecl *Function, 248822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair Found, 248922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 249020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 249120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 249220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 249322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 24949aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 24956bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 249620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 249720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 249820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2499dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 25005baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 250120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 25025baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 25035baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: S.Kind = SK_CastDerivedToBaseRValue; break; 25045baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break; 25055baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break; 2506906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 250720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 250820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 250920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 251020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2511dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddReferenceBindingStep(QualType T, 251220093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 251320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 251420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 251520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 251620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 251720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 251820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2519523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2520523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2521523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2522523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2523523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2524523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2525523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 252622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 252722c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence::AddUserConversionStep(FunctionDecl *Function, 252822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair FoundDecl, 252922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 253022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 253120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 253220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 253303981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 253422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 25359aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 25369aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 253720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 253820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 253920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 254020093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 25415baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 254220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 254338a4ffe5244e6be46f1b1f8394342a77836be776John McCall S.Kind = SK_QualificationConversionRValue; // work around a gcc warning 25445baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 25455baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: 2546906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionRValue; 2547906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 25485baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: 2549906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionXValue; 2550906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 25515baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: 2552906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionLValue; 2553906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2554906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 255520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 255620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 255720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 255820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 255920093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 256020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 256120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 256220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 256320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 256420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 256520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 256620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 256720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 256820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2569d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2570d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2571d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2572d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2573d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2574d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2575d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2576dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 257722c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 257822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddConstructorInitializationStep(CXXConstructorDecl *Constructor, 257922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara AccessSpecifier Access, 258022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 258110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates, 25826cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool FromInitList, bool AsInitList) { 258351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 25846cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl S.Kind = FromInitList && !AsInitList ? SK_ListConstructorCall 25856cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl : SK_ConstructorInitialization; 258651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 258722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 25889aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 25899aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 259051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 259151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 259251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 259371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 259471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 259571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 259671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 259771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 259871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 259971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 260018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 260118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 260218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 260318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 260418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 260518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 260618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2607cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2608cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2609cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2610cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2611cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2612cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2613cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2614569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregorvoid InitializationSequence::AddObjCObjectConversionStep(QualType T) { 2615569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Step S; 2616569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Kind = SK_ObjCObjectConversion; 2617569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Type = T; 2618569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Steps.push_back(S); 2619569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor} 2620569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 2621cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorvoid InitializationSequence::AddArrayInitStep(QualType T) { 2622cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Step S; 2623cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Kind = SK_ArrayInit; 2624cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Type = T; 2625cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Steps.push_back(S); 2626cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 2627cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 26280f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smithvoid InitializationSequence::AddParenthesizedArrayInitStep(QualType T) { 26290f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Step S; 26300f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Kind = SK_ParenthesizedArrayInit; 26310f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Type = T; 26320f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Steps.push_back(S); 26330f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith} 26340f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 2635f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddPassByIndirectCopyRestoreStep(QualType type, 2636f85e193739c953358c865005855253af4f68a497John McCall bool shouldCopy) { 2637f85e193739c953358c865005855253af4f68a497John McCall Step s; 2638f85e193739c953358c865005855253af4f68a497John McCall s.Kind = (shouldCopy ? SK_PassByIndirectCopyRestore 2639f85e193739c953358c865005855253af4f68a497John McCall : SK_PassByIndirectRestore); 2640f85e193739c953358c865005855253af4f68a497John McCall s.Type = type; 2641f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(s); 2642f85e193739c953358c865005855253af4f68a497John McCall} 2643f85e193739c953358c865005855253af4f68a497John McCall 2644f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddProduceObjCObjectStep(QualType T) { 2645f85e193739c953358c865005855253af4f68a497John McCall Step S; 2646f85e193739c953358c865005855253af4f68a497John McCall S.Kind = SK_ProduceObjCObject; 2647f85e193739c953358c865005855253af4f68a497John McCall S.Type = T; 2648f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(S); 2649f85e193739c953358c865005855253af4f68a497John McCall} 2650f85e193739c953358c865005855253af4f68a497John McCall 26512b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redlvoid InitializationSequence::AddStdInitializerListConstructionStep(QualType T) { 26522b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Step S; 26532b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Kind = SK_StdInitializerList; 26542b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Type = T; 26552b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Steps.push_back(S); 26562b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl} 26572b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 265813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlvoid InitializationSequence::RewrapReferenceInitList(QualType T, 265913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic) { 266013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl assert(Syntactic->getNumInits() == 1 && 266113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl "Can only rewrap trivial init lists."); 266213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Step S; 266313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_UnwrapInitList; 266413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = Syntactic->getInit(0)->getType(); 266513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.insert(Steps.begin(), S); 266613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 266713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_RewrapInitList; 266813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = T; 266913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.WrappingSyntacticList = Syntactic; 267013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.push_back(S); 267113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 267213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 2673dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 267420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 26757491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(FailedSequence); 267620093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 267720093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 267820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 267920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 268020093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 268120093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 268220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 268320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2684f85e193739c953358c865005855253af4f68a497John McCallstatic void MaybeProduceObjCObject(Sema &S, 2685f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 2686f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity) { 26874e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().ObjCAutoRefCount) return; 2688f85e193739c953358c865005855253af4f68a497John McCall 2689f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a parameter, produce the value if it's marked 2690f85e193739c953358c865005855253af4f68a497John McCall /// __attribute__((ns_consumed)). 2691f85e193739c953358c865005855253af4f68a497John McCall if (Entity.getKind() == InitializedEntity::EK_Parameter) { 2692f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.isParameterConsumed()) 2693f85e193739c953358c865005855253af4f68a497John McCall return; 2694f85e193739c953358c865005855253af4f68a497John McCall 2695f85e193739c953358c865005855253af4f68a497John McCall assert(Entity.getType()->isObjCRetainableType() && 2696f85e193739c953358c865005855253af4f68a497John McCall "consuming an object of unretainable type?"); 2697f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2698f85e193739c953358c865005855253af4f68a497John McCall 2699f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a return value, if the return type is a 2700f85e193739c953358c865005855253af4f68a497John McCall /// retainable type, then returns need to immediately retain the 2701f85e193739c953358c865005855253af4f68a497John McCall /// object. If an autorelease is required, it will be done at the 2702f85e193739c953358c865005855253af4f68a497John McCall /// last instant. 2703f85e193739c953358c865005855253af4f68a497John McCall } else if (Entity.getKind() == InitializedEntity::EK_Result) { 2704f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.getType()->isObjCRetainableType()) 2705f85e193739c953358c865005855253af4f68a497John McCall return; 2706f85e193739c953358c865005855253af4f68a497John McCall 2707f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2708f85e193739c953358c865005855253af4f68a497John McCall } 2709f85e193739c953358c865005855253af4f68a497John McCall} 2710f85e193739c953358c865005855253af4f68a497John McCall 271110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \brief When initializing from init list via constructor, deal with the 271210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// empty init list and std::initializer_list special cases. 271310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// 271410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \return True if this was a special case, false otherwise. 271510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic bool TryListConstructionSpecialCases(Sema &S, 271608ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl InitListExpr *List, 271710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *DestRecordDecl, 271810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl QualType DestType, 271910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitializationSequence &Sequence) { 27202b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // C++11 [dcl.init.list]p3: 27211d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // List-initialization of an object or reference of type T is defined as 27221d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // follows: 27231d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // - If T is an aggregate, aggregate initialization is performed. 27241d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (DestType->isAggregateType()) 27251d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith return false; 27261d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith 27271d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // - Otherwise, if the initializer list has no elements and T is a class 27281d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // type with a default constructor, the object is value-initialized. 272908ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl if (List->getNumInits() == 0) { 273010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (CXXConstructorDecl *DefaultConstructor = 273110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.LookupDefaultConstructor(DestRecordDecl)) { 273210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (DefaultConstructor->isDeleted() || 273310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.isFunctionConsideredUnavailable(DefaultConstructor)) { 273410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Fake an overload resolution failure. 273510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 273610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DeclAccessPair FoundDecl = DeclAccessPair::make(DefaultConstructor, 273710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DefaultConstructor->getAccess()); 273810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (FunctionTemplateDecl *ConstructorTmpl = 273910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl dyn_cast<FunctionTemplateDecl>(DefaultConstructor)) 274010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 274110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*ExplicitArgs*/ 0, 274213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles ArrayRef<Expr*>(), CandidateSet, 274310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*SuppressUserConversions*/ false); 274410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 274510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.AddOverloadCandidate(DefaultConstructor, FoundDecl, 274613a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles ArrayRef<Expr*>(), CandidateSet, 274710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*SuppressUserConversions*/ false); 274810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetOverloadFailure( 2749cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ListConstructorOverloadFailed, 2750cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl OR_Deleted); 275110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else 275210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.AddConstructorInitializationStep(DefaultConstructor, 275310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DefaultConstructor->getAccess(), 275410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, 275510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*MultipleCandidates=*/false, 27566cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl /*FromInitList=*/true, 27576cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl /*AsInitList=*/false); 275810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return true; 275910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 276010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 276110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 276210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - Otherwise, if T is a specialization of std::initializer_list, [...] 27632b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 27642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl if (S.isStdInitializerList(DestType, &E)) { 27652b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Check that each individual element can be copy-constructed. But since we 27662b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // have no place to store further information, we'll recalculate everything 27672b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // later. 27682b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 27692b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 277008ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 277108ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl List->getNumInits()), 27722b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 27732b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element = InitializedEntity::InitializeElement(S.Context, 27742b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 277508ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl for (unsigned i = 0, n = List->getNumInits(); i < n; ++i) { 27762b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 277708ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl if (!S.CanPerformCopyInitialization(Element, List->getInit(i))) { 27782b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Sequence.SetFailed( 27792b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializationSequence::FK_InitListElementCopyFailure); 27802b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl return true; 27812b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 27822b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 27832b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Sequence.AddStdInitializerListConstructionStep(DestType); 27842b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl return true; 27852b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 278610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 278710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Not a special case. 278810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return false; 278910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 279010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 279196715b288060c8e168cbca62f366c12e88c5483dSebastian Redlstatic OverloadingResult 279296715b288060c8e168cbca62f366c12e88c5483dSebastian RedlResolveConstructorOverload(Sema &S, SourceLocation DeclLoc, 279396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Expr **Args, unsigned NumArgs, 279496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet &CandidateSet, 279596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator Con, 279696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator ConEnd, 279796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet::iterator &Best, 279896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl bool CopyInitializing, bool AllowExplicit, 279951ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl bool OnlyListConstructors, bool InitListSyntax) { 280096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl CandidateSet.clear(); 280196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 280296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl for (; Con != ConEnd; ++Con) { 280396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl NamedDecl *D = *Con; 280496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 280596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl bool SuppressUserConversions = false; 280696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 280796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Find the constructor (which may be a template). 280896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl CXXConstructorDecl *Constructor = 0; 280996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 281096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (ConstructorTmpl) 281196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Constructor = cast<CXXConstructorDecl>( 281296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl ConstructorTmpl->getTemplatedDecl()); 281396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl else { 281496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Constructor = cast<CXXConstructorDecl>(D); 281596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 281696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // If we're performing copy initialization using a copy constructor, we 281751ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl // suppress user-defined conversions on the arguments. We do the same for 281851ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl // move constructors. 281951ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl if ((CopyInitializing || (InitListSyntax && NumArgs == 1)) && 282051ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl Constructor->isCopyOrMoveConstructor()) 282196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl SuppressUserConversions = true; 282296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 282396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 282496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (!Constructor->isInvalidDecl() && 282596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl (AllowExplicit || !Constructor->isExplicit()) && 28266cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl (!OnlyListConstructors || S.isInitListConstructor(Constructor))) { 282796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (ConstructorTmpl) 282896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 282996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl /*ExplicitArgs*/ 0, 283051ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl llvm::makeArrayRef(Args, NumArgs), 283151ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl CandidateSet, SuppressUserConversions); 2832ed878af7914df535b32d64f555fa118413186672Douglas Gregor else { 2833ed878af7914df535b32d64f555fa118413186672Douglas Gregor // C++ [over.match.copy]p1: 2834ed878af7914df535b32d64f555fa118413186672Douglas Gregor // - When initializing a temporary to be bound to the first parameter 2835ed878af7914df535b32d64f555fa118413186672Douglas Gregor // of a constructor that takes a reference to possibly cv-qualified 2836ed878af7914df535b32d64f555fa118413186672Douglas Gregor // T as its first argument, called with a single argument in the 2837ed878af7914df535b32d64f555fa118413186672Douglas Gregor // context of direct-initialization, explicit conversion functions 2838ed878af7914df535b32d64f555fa118413186672Douglas Gregor // are also considered. 2839ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConv = AllowExplicit && !CopyInitializing && 2840ed878af7914df535b32d64f555fa118413186672Douglas Gregor NumArgs == 1 && 2841ed878af7914df535b32d64f555fa118413186672Douglas Gregor Constructor->isCopyOrMoveConstructor(); 284296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl S.AddOverloadCandidate(Constructor, FoundDecl, 284313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs), CandidateSet, 2844ed878af7914df535b32d64f555fa118413186672Douglas Gregor SuppressUserConversions, 2845ed878af7914df535b32d64f555fa118413186672Douglas Gregor /*PartialOverloading=*/false, 2846ed878af7914df535b32d64f555fa118413186672Douglas Gregor /*AllowExplicit=*/AllowExplicitConv); 2847ed878af7914df535b32d64f555fa118413186672Douglas Gregor } 284896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 284996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 285096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 285196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Perform overload resolution and return the result. 285296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl return CandidateSet.BestViableFunction(S, DeclLoc, Best); 285396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl} 285496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 285510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 285610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// enumerates the constructors of the initialized entity and performs overload 285710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// resolution to select the best. 285808ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl/// If InitListSyntax is true, this is list-initialization of a non-aggregate 285910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// class type. 286010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic void TryConstructorInitialization(Sema &S, 286110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 286210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 286310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Args, unsigned NumArgs, 286410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl QualType DestType, 286510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitializationSequence &Sequence, 286608ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl bool InitListSyntax = false) { 286708ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl assert((!InitListSyntax || (NumArgs == 1 && isa<InitListExpr>(Args[0]))) && 286808ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl "InitListSyntax must come with a single initializer list argument."); 286908ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl 287010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Check constructor arguments for self reference. 287110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (DeclaratorDecl *DD = Entity.getDecl()) 287210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Parameters arguments are occassionially constructed with itself, 287310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // for instance, in recursive functions. Skip them. 287410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!isa<ParmVarDecl>(DD)) 287510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl for (unsigned i = 0; i < NumArgs; ++i) 287610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckSelfReference(DD, Args[i]); 287710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 287810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // The type we're constructing needs to be complete. 287910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 288010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_Incomplete); 288196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl return; 288210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 288310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 288410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const RecordType *DestRecordType = DestType->getAs<RecordType>(); 288510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl assert(DestRecordType && "Constructor initialization requires record type"); 288610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *DestRecordDecl 288710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXRecordDecl>(DestRecordType->getDecl()); 288810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 288908ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl if (InitListSyntax && 289008ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl TryListConstructionSpecialCases(S, cast<InitListExpr>(Args[0]), 289108ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl DestRecordDecl, DestType, Sequence)) 289210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 289310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 289496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Build the candidate set directly in the initialization sequence 289596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // structure, so that it will persist if we fail. 289696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 289796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 289896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Determine whether we are allowed to call explicit constructors or 289996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // explicit conversion operators. 290070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl bool AllowExplicit = Kind.AllowExplicit() || InitListSyntax; 29016cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool CopyInitialization = Kind.getKind() == InitializationKind::IK_Copy; 290208ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl 290310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - Otherwise, if T is a class type, constructors are considered. The 290410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // applicable constructors are enumerated, and the best one is chosen 290510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // through overload resolution. 290696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator ConStart, ConEnd; 290796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl llvm::tie(ConStart, ConEnd) = S.LookupConstructors(DestRecordDecl); 290810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 29096cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl OverloadingResult Result = OR_No_Viable_Function; 291010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet::iterator Best; 29116cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool AsInitializerList = false; 29126cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 29136cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // C++11 [over.match.list]p1: 29146cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // When objects of non-aggregate type T are list-initialized, overload 29156cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // resolution selects the constructor in two phases: 29166cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // - Initially, the candidate functions are the initializer-list 29176cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // constructors of the class T and the argument list consists of the 29186cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // initializer list as a single argument. 29196cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (InitListSyntax) { 29206cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl AsInitializerList = true; 29216cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, NumArgs, 29226cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CandidateSet, ConStart, ConEnd, Best, 29236cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CopyInitialization, AllowExplicit, 292451ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl /*OnlyListConstructor=*/true, 292551ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl InitListSyntax); 29266cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 29276cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // Time to unwrap the init list. 29286cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl InitListExpr *ILE = cast<InitListExpr>(Args[0]); 29296cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Args = ILE->getInits(); 29306cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl NumArgs = ILE->getNumInits(); 29316cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl } 29326cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 29336cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // C++11 [over.match.list]p1: 29346cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // - If no viable initializer-list constructor is found, overload resolution 29356cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // is performed again, where the candidate functions are all the 29366cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // constructors of the class T nad the argument list consists of the 29376cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // elements of the initializer list. 29386cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (Result == OR_No_Viable_Function) { 29396cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl AsInitializerList = false; 29406cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, NumArgs, 29416cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CandidateSet, ConStart, ConEnd, Best, 29426cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CopyInitialization, AllowExplicit, 294351ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl /*OnlyListConstructors=*/false, 294451ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl InitListSyntax); 29456cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl } 29466cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (Result) { 294708ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl Sequence.SetOverloadFailure(InitListSyntax ? 2948cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ListConstructorOverloadFailed : 2949cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ConstructorOverloadFailed, 295010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Result); 295110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 295210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 295310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 295410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // C++0x [dcl.init]p6: 295510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If a program calls for the default initialization of an object 295610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // of a const-qualified type T, T shall be a class type with a 295710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // user-provided default constructor. 295810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default && 295910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Entity.getType().isConstQualified() && 296010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl cast<CXXConstructorDecl>(Best->Function)->isImplicit()) { 296110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 296210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 296310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 296410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 296570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // C++11 [over.match.list]p1: 296670e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // In copy-list-initialization, if an explicit constructor is chosen, the 296770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // initializer is ill-formed. 296870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 296970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl if (InitListSyntax && !Kind.AllowExplicit() && CtorDecl->isExplicit()) { 297070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_ExplicitConstructor); 297170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl return; 297270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl } 297370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 297410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Add the constructor initialization step. Any cv-qualification conversion is 297510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // subsumed by the initialization. 297610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = (CandidateSet.size() > 1); 297710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.AddConstructorInitializationStep(CtorDecl, 297810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Best->FoundDecl.getAccess(), 297910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, HadMultipleCandidates, 29806cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl InitListSyntax, AsInitializerList); 298110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 298210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 298313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic bool 298413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian RedlResolveOverloadedFunctionForReferenceBinding(Sema &S, 298513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 298613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &SourceType, 298713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &UnqualifiedSourceType, 298813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType UnqualifiedTargetType, 298913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 299013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (S.Context.getCanonicalType(UnqualifiedSourceType) == 299113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Context.OverloadTy) { 299213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl DeclAccessPair Found; 299313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool HadMultipleCandidates = false; 299413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (FunctionDecl *Fn 299513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.ResolveAddressOfOverloadedFunction(Initializer, 299613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedTargetType, 299713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl false, Found, 299813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl &HadMultipleCandidates)) { 299913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddAddressOverloadResolutionStep(Fn, Found, 300013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl HadMultipleCandidates); 300113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceType = Fn->getType(); 300213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedSourceType = SourceType.getUnqualifiedType(); 300313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } else if (!UnqualifiedTargetType->isRecordType()) { 300413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 300513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return true; 300613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 300713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 300813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return false; 300913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 301013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 301113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 301213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 301313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 301413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 301513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 301613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 301713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 301813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 301913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 302013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 302113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryListInitialization(Sema &S, 302213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 302313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 302413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 302513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 302613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 302713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Attempt list initialization of a reference. 302813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceListInitialization(Sema &S, 302913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 303013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 303113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 303213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) 303313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl{ 303413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // First, catch C++03 where this isn't possible. 30354e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x) { 303613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 303713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 303813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 303913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 304013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 304113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 304213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals; 304313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 304413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 304513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Reference initialization via an initializer list works thus: 304613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If the initializer list consists of a single element that is 304713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // reference-related to the referenced type, bind directly to that element 304813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // (possibly creating temporaries). 304913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Otherwise, initialize a temporary with the initializer list and 305013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // bind to that. 305113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (InitList->getNumInits() == 1) { 305213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer = InitList->getInit(0); 305313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2 = Initializer->getType(); 305413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals; 305513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 305613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 305713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If this fails, creating a temporary wouldn't work either. 305813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 305913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 306013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 306113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 306213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 306313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool dummy1, dummy2, dummy3; 306413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sema::ReferenceCompareResult RefRelationship 306513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, dummy1, 306613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl dummy2, dummy3); 306713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (RefRelationship >= Sema::Ref_Related) { 306813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Try to bind the reference here. 306913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 307013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 307113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) 307213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.RewrapReferenceInitList(cv1T1, InitList); 307313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 307413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 307513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 307613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 307713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Not reference-related. Create a temporary and bind to that. 307813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 307913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 308013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryListInitialization(S, TempEntity, Kind, InitList, Sequence); 308113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) { 308213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (DestType->isRValueReferenceType() || 308313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (T1Quals.hasConst() && !T1Quals.hasVolatile())) 308413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 308513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else 308613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed( 308713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 308813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 308913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 309013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 309112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola/// \brief Attempt list initialization (C++0x [dcl.init.list]) 309212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindolastatic void TryListInitialization(Sema &S, 309312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializedEntity &Entity, 309412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializationKind &Kind, 309512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitListExpr *InitList, 309612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitializationSequence &Sequence) { 309712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 309812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 309914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // C++ doesn't allow scalar initialization with more than one argument. 310014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // But C99 complex numbers are scalars and it makes sense there. 31014e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus && DestType->isScalarType() && 310214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DestType->isAnyComplexType() && InitList->getNumInits() > 1) { 310314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 310414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 310514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 310614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DestType->isReferenceType()) { 310713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceListInitialization(S, Entity, Kind, InitList, Sequence); 310812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola return; 310914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 3110d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (DestType->isRecordType()) { 3111d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (S.RequireCompleteType(InitList->getLocStart(), DestType, S.PDiag())) { 3112d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Sequence.SetFailed(InitializationSequence::FK_Incomplete); 3113d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl return; 3114d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } 3115d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl 3116d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (!DestType->isAggregateType()) { 31174e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus0x) { 3118d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Expr *Arg = InitList; 3119d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl // A direct-initializer is not list-syntax, i.e. there's no special 3120d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl // treatment of "A a({1, 2});". 3121d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl TryConstructorInitialization(S, Entity, Kind, &Arg, 1, DestType, 3122d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Sequence, 3123d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Kind.getKind() != InitializationKind::IK_Direct); 3124d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } else 3125d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Sequence.SetFailed( 3126d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl InitializationSequence::FK_InitListBadDestinationType); 3127d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl return; 3128d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } 312914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 313014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 313114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker CheckInitList(S, Entity, InitList, 3132c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/true, 3133168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 31344e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 313514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (CheckInitList.HadError()) { 313614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ListInitializationFailed); 313714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 313812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola } 313912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 314014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Add the list initialization step with the built init list. 314112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Sequence.AddListInitializationStep(DestType); 314212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola} 314320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 314420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 314520093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 314620093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 314720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 314820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 3149ed878af7914df535b32d64f555fa118413186672Douglas Gregor Expr *Initializer, 3150ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowRValues, 315120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3152d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 315320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 315420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 315520093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 315620093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 315720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 315820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 3159569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion; 3160f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion; 3161dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 3162569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T1, T2, DerivedToBase, 3163f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, 3164f85e193739c953358c865005855253af4f68a497John McCall ObjCLifetimeConversion) && 316520093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 316660cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 3167569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor (void)ObjCConversion; 3168f85e193739c953358c865005855253af4f68a497John McCall (void)ObjCLifetimeConversion; 3169f85e193739c953358c865005855253af4f68a497John McCall 317020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 317120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 317220093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 317320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 317420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 317520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 317620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 3177168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3178ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConvs = Kind.allowExplicitConversionFunctions(); 3179ed878af7914df535b32d64f555fa118413186672Douglas Gregor 318020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 31816b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && 31826b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T1, 0)) { 318320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 318420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 318520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 3186572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall 318720093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3188e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(T1RecordDecl); 318920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 31909aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 31919aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 31929aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 319320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 319420093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 31959aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 319620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 319720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 319820093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 319920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32009aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 3201dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 320220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 320320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 320420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 32059aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 320686820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 320713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 3208b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 320920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32109aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 321113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 3212b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 321320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3214dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 321520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3216572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) 3217572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3218dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 32196b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor const RecordType *T2RecordType = 0; 32206b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if ((T2RecordType = T2->getAs<RecordType>()) && 32216b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T2, 0)) { 322220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 322320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 322420093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 322520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3226eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 322720093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 3228eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3229eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 323020093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 323120093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 323220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 323320093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3234dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 323520093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 323620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 323720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 323820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 323920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32404680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Conv = cast<CXXConversionDecl>(D); 3241dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 324220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 324320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 324420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 3245dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Do we need to make sure that we only consider conversion 3246dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // candidates with reference-compatible results? That might be needed to 324720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 3248ed878af7914df535b32d64f555fa118413186672Douglas Gregor if ((AllowExplicitConvs || !Conv->isExplicit()) && 324920093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 325020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 32519aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 325286820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 3253564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor DestType, CandidateSet); 325420093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32559aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 3256564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor Initializer, DestType, CandidateSet); 325720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 325820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 325920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3260572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) 3261572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3262dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 326320093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 326420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3265dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 326620093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 3267dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (OverloadingResult Result 32688fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) 326920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 327003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 327120093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 327203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 327325ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // This is the overload that will actually be used for the initialization, so 327425ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // mark it as used. 32755f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(DeclLoc, Function); 327625ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 327703981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 327820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 327920093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 328020093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 328120093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 328203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 328303981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 328422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 32859aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 328622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara T2.getNonLValueExprType(S.Context), 328722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 328803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 3289dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Determine whether we need to perform derived-to-base or 329003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 32915baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = VK_RValue; 3292906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl if (T2->isLValueReferenceType()) 32935baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = VK_LValue; 3294906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl else if (const RValueReferenceType *RRef = T2->getAs<RValueReferenceType>()) 32955baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = RRef->getPointeeType()->isFunctionType() ? VK_LValue : VK_XValue; 3296906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 329720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 3298569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool NewObjCConversion = false; 3299f85e193739c953358c865005855253af4f68a497John McCall bool NewObjCLifetimeConversion = false; 330020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 3301dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi = S.CompareReferenceRelationship(DeclLoc, T1, 33026398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context), 3303f85e193739c953358c865005855253af4f68a497John McCall NewDerivedToBase, NewObjCConversion, 3304f85e193739c953358c865005855253af4f68a497John McCall NewObjCLifetimeConversion); 3305a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 3306a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 3307a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 3308a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 3309a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 3310a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 3311a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 3312a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 3313a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 3314a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 3315a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 331620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 331720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 3318dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi T2.getNonReferenceType().getQualifiers()), 33195baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK); 3320569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (NewObjCConversion) 3321569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3322569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, 3323569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T2.getNonReferenceType().getQualifiers())); 3324569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 332520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 33265baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK); 3327dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 332820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 332920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 333020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 3331dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 333283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 333383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 333483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr); 333583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 3336dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Attempt reference initialization (C++0x [dcl.init.ref]) 3337dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryReferenceInitialization(Sema &S, 333820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 333920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 334020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 334120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3342d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 334320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 33445535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 33455535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 334620093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 33475535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 33485535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 33494680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 335020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 335120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 335220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 335313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 335413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 335513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 335613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 335713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Delegate everything else to a subfunction. 335813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 335913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 336013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 33614680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 336213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Reference initialization without resolving overloaded functions. 336313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 336413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 336513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 336613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 336713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 336813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 336913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 337013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 337113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 337213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 337313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 337420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 337520093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 337620093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 337720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 3378569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion = false; 3379f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion = false; 33804680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Expr::Classification InitCategory = Initializer->Classify(S.Context); 338120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 3382569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase, 3383f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, ObjCLifetimeConversion); 33844680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 338520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 3386dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // A reference to type "cv1 T1" is initialized by an expression of type 338720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 338820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3389dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the reference is an lvalue reference and the initializer 339020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 33914680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // Note the analogous bullet points for rvlaue refs to functions. Because 33924680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // there are no function rvalues in C++, rvalue refs to functions are treated 33934680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // like lvalue refs. 339420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 33954680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl bool T1Function = T1->isFunctionType(); 33964680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (isLValueRef || T1Function) { 3397dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (InitCategory.isLValue() && 339814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3399dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 340014d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related))) { 3401dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - is an lvalue (but is not a bit-field), and "cv1 T1" is 340220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 340320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3404dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 340520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 3406de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 3407de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 3408de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 340920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 341020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 3411dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Context.getQualifiedType(T1, T2Quals), 34125baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue); 3413569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 3414569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3415569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3416569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 34175535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 34185baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK_LValue); 3419de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 3420093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 3421de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 342220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 342320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3424dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3425dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3426dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3427dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 3428dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // with "cv3 T3" (this conversion is selected by enumerating the 342920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 343020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 34314680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // If we have an rvalue ref to function type here, the rhs must be 34324680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // an rvalue. 34334680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && 34344680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isLValueRef || InitCategory.isRValue())) { 3435dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 343620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 34374680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl /*AllowRValues=*/isRValueRef, 343820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 343920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 344020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 34411d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 34421d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 34431d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 34441d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 34451d31833450e6d2947a33cb0840d87661d92eec07John McCall } 344620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 344720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34484680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, the reference shall be an lvalue reference to a 345020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 345169d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // shall be an rvalue reference. 3452b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor if (isLValueRef && !(T1Quals.hasConst() && !T1Quals.hasVolatile())) { 34533afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 34543afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 34553afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 345620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 345720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 345820093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3459b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor else 34604680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Sequence.SetFailed(InitCategory.isLValue() 346120093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 346220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 346320093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 346420093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 34654680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 346620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 346720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34684680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3469c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - If the initializer expression 3470c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - is an xvalue, class prvalue, array prvalue, or function lvalue and 3471c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // "cv1 T1" is reference-compatible with "cv2 T2" 3472c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // Note: functions are handled below. 3473c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (!T1Function && 347414d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3475dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 347614d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related)) && 3477c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isXValue() || 3478c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isRecordType()) || 3479c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isArrayType()))) { 3480c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ExprValueKind ValueKind = InitCategory.isXValue()? VK_XValue : VK_RValue; 3481c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (InitCategory.isPRValue() && T2->isRecordType()) { 3482523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 3483523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 3484523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 3485523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 3486523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 3487523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 3488523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 3489523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 3490523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 34914e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x && !S.getLangOpts().MicrosoftExt) 3492523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 34934e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (S.getLangOpts().CPlusPlus0x) 349483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CheckCXX98CompatAccessibleCopy(S, Entity, Initializer); 349520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3496dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3497c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (DerivedToBase) 3498c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddDerivedToBaseCastStep(S.Context.getQualifiedType(T1, T2Quals), 3499c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ValueKind); 3500c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor else if (ObjCConversion) 3501c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddObjCObjectConversionStep( 3502c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3503dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3504c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T1Quals != T2Quals) 3505c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddQualificationConversionStep(cv1T1, ValueKind); 3506dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Sequence.AddReferenceBindingStep(cv1T1, 350765bfd682010f599a9a04fc7523e95e28c27508baPeter Collingbourne /*bindingTemporary=*/InitCategory.isPRValue()); 3508dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return; 3509c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor } 3510dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3511dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3512dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3513c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // xvalue, class prvalue, or function lvalue of type "cv3 T3", 3514c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // where "cv1 T1" is reference-compatible with "cv3 T3", 3515c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T2->isRecordType()) { 351620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 351720093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 351820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 351920093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 352020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 352120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 352220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 352320093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 352420093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3525dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 352620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 352720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3528dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 352920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 353020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 353120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 35320099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi 35330099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // - Otherwise, a temporary of type "cv1 T1" is created and initialized 353420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 3535dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy initialization (8.5). The reference is then bound to the 353620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 3537369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 353820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 353920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 3540168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3541369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3542369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 3543369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3544f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 3545f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, TempEntity.getType(), 3546369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ false, 3547369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicit, 354814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*FIXME:InOverloadResolution=*/false, 3549f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 3550f85e193739c953358c865005855253af4f68a497John McCall /*AllowObjCWritebackConversion=*/false); 3551f85e193739c953358c865005855253af4f68a497John McCall 3552f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isBad()) { 355320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 355420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 355520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 355620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 355718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 355818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 355918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 356018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 35613afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 35623afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 356318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 356418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 356520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 3566f85e193739c953358c865005855253af4f68a497John McCall } else { 3567f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, TempEntity.getType()); 356820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 356920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 357020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 357120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 357220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 35735535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 35745535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 3575dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship == Sema::Ref_Related && 35765535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 357720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 357820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 357920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 358020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3581dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // [...] If T1 is reference-related to T2 and the reference is an rvalue 3582b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor // reference, the initializer expression shall not be an lvalue. 3583dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship >= Sema::Ref_Related && !isLValueRef && 3584b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitCategory.isLValue()) { 3585b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor Sequence.SetFailed( 3586b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 3587b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor return; 3588b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor } 3589dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 359020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 359120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 359220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 359320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 359420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 3595dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// (C++ [dcl.init.string], C99 6.7.8). 3596dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryStringLiteralInitialization(Sema &S, 359720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 359820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 359920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 360020093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3601d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 360220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 360320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 360471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 3605dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryValueInitialization(Sema &S, 360671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 360771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 360871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor InitializationSequence &Sequence) { 36091d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++98 [dcl.init]p5, C++11 [dcl.init]p7: 361071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 361171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 3612d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 3613dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 361471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 36151d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith T = S.Context.getBaseElementType(T); 3616dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 361771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 361871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 36191d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++98: 362071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is a class type (clause 9) with a user-declared 362171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // constructor (12.1), then the default constructor for T is 362271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // called (and the initialization is ill-formed if T has no 362371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // accessible default constructor); 36244e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x) { 36251d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (ClassDecl->hasUserDeclaredConstructor()) 36261d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // FIXME: we really want to refer to a single subobject of the array, 36271d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // but Entity doesn't have a way to capture that (yet). 36281d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith return TryConstructorInitialization(S, Entity, Kind, 0, 0, 36291d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith T, Sequence); 36301d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith } else { 36311d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++11: 36321d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // -- if T is a class type (clause 9) with either no default constructor 36331d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // (12.1 [class.ctor]) or a default constructor that is user-provided 36341d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // or deleted, then the object is default-initialized; 36351d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith CXXConstructorDecl *CD = S.LookupDefaultConstructor(ClassDecl); 36361d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (!CD || !CD->getCanonicalDecl()->isDefaulted() || CD->isDeleted()) 36371d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith return TryConstructorInitialization(S, Entity, Kind, 0, 0, 36381d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith T, Sequence); 36391d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith } 3640dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36411d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // -- if T is a (possibly cv-qualified) non-union class type without a 36421d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // user-provided or deleted default constructor, then the object is 36431d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // zero-initialized and, if T has a non-trivial default constructor, 36441d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // default-initialized; 3645465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if ((ClassDecl->getTagKind() == TTK_Class || 3646ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor ClassDecl->getTagKind() == TTK_Struct)) { 3647d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 3648dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 364916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 365071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 365171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 365271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 3653d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 365471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 365571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 365699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 365799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 365899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 365999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 366099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 366199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 3662dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 366399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 366499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 366599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 3666f85e193739c953358c865005855253af4f68a497John McCall QualType DestType = S.Context.getBaseElementType(Entity.getType()); 3667f85e193739c953358c865005855253af4f68a497John McCall 366899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 366999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 367099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 36714e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (DestType->isRecordType() && S.getLangOpts().CPlusPlus) { 36724e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, Sequence); 36734e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth return; 367499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 3675dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 367699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 3677dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 367899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 3679dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // a const-qualified type T, T shall be a class type with a user-provided 368099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 36814e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (DestType.isConstQualified() && S.getLangOpts().CPlusPlus) { 368299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 3683f85e193739c953358c865005855253af4f68a497John McCall return; 3684f85e193739c953358c865005855253af4f68a497John McCall } 3685f85e193739c953358c865005855253af4f68a497John McCall 3686f85e193739c953358c865005855253af4f68a497John McCall // If the destination type has a lifetime property, zero-initialize it. 3687f85e193739c953358c865005855253af4f68a497John McCall if (DestType.getQualifiers().hasObjCLifetime()) { 3688f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddZeroInitializationStep(Entity.getType()); 3689f85e193739c953358c865005855253af4f68a497John McCall return; 3690f85e193739c953358c865005855253af4f68a497John McCall } 369199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 369299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 369320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 369420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 369520093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 3696dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryUserDefinedConversion(Sema &S, 369720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 369820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 369920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 370020093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3701d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 37024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 37034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 37044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 37054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 3706dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 37084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 37094a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 37104a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 3711dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 37134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 3714168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3715dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37164a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 37174a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 37184a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 37194a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 37204a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 3721dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3722087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Try to complete the type we're converting to. 3723dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (!S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 3724087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3725e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 3726087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Con != ConEnd; ++Con) { 3727087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor NamedDecl *D = *Con; 3728087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 3729dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3730087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Find the constructor (which may be a template). 3731087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor CXXConstructorDecl *Constructor = 0; 3732087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor FunctionTemplateDecl *ConstructorTmpl 3733087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor = dyn_cast<FunctionTemplateDecl>(D); 37344a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 3735087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>( 3736087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 37374712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor else 3738087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>(D); 3739dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3740087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!Constructor->isInvalidDecl() && 3741087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 3742087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (ConstructorTmpl) 3743087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 3744087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor /*ExplicitArgs*/ 0, 374513a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 37464712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3747087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor else 3748087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 374913a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 37504712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3751087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 3752dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 3753087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 37544a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3755cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3756cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 3757cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 37584a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 37594a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 37604a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 3761cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 376233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 376333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 376433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 376533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 376633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 3767dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3768eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 376933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 3770eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3771dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi E = Conversions->end(); 377233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 377333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 377433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 377533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 377633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3777dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 377833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 377933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 37804a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 378133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 37824a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 378332daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 3784dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 378533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 378633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 37879aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 378886820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 378933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 379033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 37919aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 379286820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 379333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 37944a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3797dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3798dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 37994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 38001d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 38018fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) { 38024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 3803dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializationSequence::FK_UserConversionOverloadFailed, 38044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 38054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 38064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 38071d31833450e6d2947a33cb0840d87661d92eec07John McCall 38084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 38095f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(DeclLoc, Function); 381022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 3811dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 38134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 3814f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // subsumed by the initialization. Per DR5, the created temporary is of the 3815f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // cv-unqualified type of the destination. 3816f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith Sequence.AddUserConversionStep(Function, Best->FoundDecl, 3817f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith DestType.getUnqualifiedType(), 381822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38194a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 38204a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 38214a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 38224a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 38235291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor QualType ConvType = Function->getCallResultType(); 38243fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 3825f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // If we're converting to a class type, there may be an copy of 38263fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 38273fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 38283fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 38293fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 38303fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 383122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType, 383222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38333fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 38343fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 38354a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 383622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType, 383722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 3838dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38393fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 38403fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 38414a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 38424a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 38434a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 38441d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 38454a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 38464a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 38474a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 384820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 384920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3850f85e193739c953358c865005855253af4f68a497John McCall/// The non-zero enum values here are indexes into diagnostic alternatives. 3851f85e193739c953358c865005855253af4f68a497John McCallenum InvalidICRKind { IIK_okay, IIK_nonlocal, IIK_nonscalar }; 3852f85e193739c953358c865005855253af4f68a497John McCall 3853f85e193739c953358c865005855253af4f68a497John McCall/// Determines whether this expression is an acceptable ICR source. 3854c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCallstatic InvalidICRKind isInvalidICRSource(ASTContext &C, Expr *e, 3855c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall bool isAddressOf) { 3856f85e193739c953358c865005855253af4f68a497John McCall // Skip parens. 3857f85e193739c953358c865005855253af4f68a497John McCall e = e->IgnoreParens(); 3858f85e193739c953358c865005855253af4f68a497John McCall 3859f85e193739c953358c865005855253af4f68a497John McCall // Skip address-of nodes. 3860f85e193739c953358c865005855253af4f68a497John McCall if (UnaryOperator *op = dyn_cast<UnaryOperator>(e)) { 3861f85e193739c953358c865005855253af4f68a497John McCall if (op->getOpcode() == UO_AddrOf) 3862c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, op->getSubExpr(), /*addressof*/ true); 3863f85e193739c953358c865005855253af4f68a497John McCall 3864f85e193739c953358c865005855253af4f68a497John McCall // Skip certain casts. 3865c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } else if (CastExpr *ce = dyn_cast<CastExpr>(e)) { 3866c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall switch (ce->getCastKind()) { 3867f85e193739c953358c865005855253af4f68a497John McCall case CK_Dependent: 3868f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 3869f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueBitCast: 3870f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 3871c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, ce->getSubExpr(), isAddressOf); 3872f85e193739c953358c865005855253af4f68a497John McCall 3873f85e193739c953358c865005855253af4f68a497John McCall case CK_ArrayToPointerDecay: 3874f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3875f85e193739c953358c865005855253af4f68a497John McCall 3876f85e193739c953358c865005855253af4f68a497John McCall case CK_NullToPointer: 3877f85e193739c953358c865005855253af4f68a497John McCall return IIK_okay; 3878f85e193739c953358c865005855253af4f68a497John McCall 3879f85e193739c953358c865005855253af4f68a497John McCall default: 3880f85e193739c953358c865005855253af4f68a497John McCall break; 3881f85e193739c953358c865005855253af4f68a497John McCall } 3882f85e193739c953358c865005855253af4f68a497John McCall 3883f85e193739c953358c865005855253af4f68a497John McCall // If we have a declaration reference, it had better be a local variable. 3884f4b88a45902af1802a1cb42ba48b1c474474f228John McCall } else if (isa<DeclRefExpr>(e)) { 3885c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (!isAddressOf) return IIK_nonlocal; 3886c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3887f4b88a45902af1802a1cb42ba48b1c474474f228John McCall VarDecl *var = dyn_cast<VarDecl>(cast<DeclRefExpr>(e)->getDecl()); 3888f4b88a45902af1802a1cb42ba48b1c474474f228John McCall if (!var) return IIK_nonlocal; 3889c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3890c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return (var->hasLocalStorage() ? IIK_okay : IIK_nonlocal); 3891f85e193739c953358c865005855253af4f68a497John McCall 3892f85e193739c953358c865005855253af4f68a497John McCall // If we have a conditional operator, check both sides. 3893f85e193739c953358c865005855253af4f68a497John McCall } else if (ConditionalOperator *cond = dyn_cast<ConditionalOperator>(e)) { 3894c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (InvalidICRKind iik = isInvalidICRSource(C, cond->getLHS(), isAddressOf)) 3895f85e193739c953358c865005855253af4f68a497John McCall return iik; 3896f85e193739c953358c865005855253af4f68a497John McCall 3897c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, cond->getRHS(), isAddressOf); 3898f85e193739c953358c865005855253af4f68a497John McCall 3899f85e193739c953358c865005855253af4f68a497John McCall // These are never scalar. 3900f85e193739c953358c865005855253af4f68a497John McCall } else if (isa<ArraySubscriptExpr>(e)) { 3901f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3902f85e193739c953358c865005855253af4f68a497John McCall 3903f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, it needs to be a null pointer constant. 3904f85e193739c953358c865005855253af4f68a497John McCall } else { 3905f85e193739c953358c865005855253af4f68a497John McCall return (e->isNullPointerConstant(C, Expr::NPC_ValueDependentIsNull) 3906f85e193739c953358c865005855253af4f68a497John McCall ? IIK_okay : IIK_nonlocal); 3907f85e193739c953358c865005855253af4f68a497John McCall } 3908f85e193739c953358c865005855253af4f68a497John McCall 3909f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonlocal; 3910f85e193739c953358c865005855253af4f68a497John McCall} 3911f85e193739c953358c865005855253af4f68a497John McCall 3912f85e193739c953358c865005855253af4f68a497John McCall/// Check whether the given expression is a valid operand for an 3913f85e193739c953358c865005855253af4f68a497John McCall/// indirect copy/restore. 3914f85e193739c953358c865005855253af4f68a497John McCallstatic void checkIndirectCopyRestoreSource(Sema &S, Expr *src) { 3915f85e193739c953358c865005855253af4f68a497John McCall assert(src->isRValue()); 3916f85e193739c953358c865005855253af4f68a497John McCall 3917c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall InvalidICRKind iik = isInvalidICRSource(S.Context, src, false); 3918f85e193739c953358c865005855253af4f68a497John McCall if (iik == IIK_okay) return; 3919f85e193739c953358c865005855253af4f68a497John McCall 3920f85e193739c953358c865005855253af4f68a497John McCall S.Diag(src->getExprLoc(), diag::err_arc_nonlocal_writeback) 3921f85e193739c953358c865005855253af4f68a497John McCall << ((unsigned) iik - 1) // shift index into diagnostic explanations 3922f85e193739c953358c865005855253af4f68a497John McCall << src->getSourceRange(); 3923f85e193739c953358c865005855253af4f68a497John McCall} 3924f85e193739c953358c865005855253af4f68a497John McCall 3925cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// \brief Determine whether we have compatible array types for the 3926cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// purposes of GNU by-copy array initialization. 3927cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorstatic bool hasCompatibleArrayTypes(ASTContext &Context, 3928cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Dest, 3929cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Source) { 3930cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the source and destination array types are equivalent, we're 3931cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // done. 3932cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Context.hasSameType(QualType(Dest, 0), QualType(Source, 0))) 3933cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return true; 3934cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3935cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Make sure that the element types are the same. 3936cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!Context.hasSameType(Dest->getElementType(), Source->getElementType())) 3937cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return false; 3938cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3939cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // The only mismatch we allow is when the destination is an 3940cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // incomplete array type and the source is a constant array type. 3941cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return Source->isConstantArrayType() && Dest->isIncompleteArrayType(); 3942cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 3943cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3944f85e193739c953358c865005855253af4f68a497John McCallstatic bool tryObjCWritebackConversion(Sema &S, 3945f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 3946f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity, 3947f85e193739c953358c865005855253af4f68a497John McCall Expr *Initializer) { 3948f85e193739c953358c865005855253af4f68a497John McCall bool ArrayDecay = false; 3949f85e193739c953358c865005855253af4f68a497John McCall QualType ArgType = Initializer->getType(); 3950f85e193739c953358c865005855253af4f68a497John McCall QualType ArgPointee; 3951f85e193739c953358c865005855253af4f68a497John McCall if (const ArrayType *ArgArrayType = S.Context.getAsArrayType(ArgType)) { 3952f85e193739c953358c865005855253af4f68a497John McCall ArrayDecay = true; 3953f85e193739c953358c865005855253af4f68a497John McCall ArgPointee = ArgArrayType->getElementType(); 3954f85e193739c953358c865005855253af4f68a497John McCall ArgType = S.Context.getPointerType(ArgPointee); 3955f85e193739c953358c865005855253af4f68a497John McCall } 3956f85e193739c953358c865005855253af4f68a497John McCall 3957f85e193739c953358c865005855253af4f68a497John McCall // Handle write-back conversion. 3958f85e193739c953358c865005855253af4f68a497John McCall QualType ConvertedArgType; 3959f85e193739c953358c865005855253af4f68a497John McCall if (!S.isObjCWritebackConversion(ArgType, Entity.getType(), 3960f85e193739c953358c865005855253af4f68a497John McCall ConvertedArgType)) 3961f85e193739c953358c865005855253af4f68a497John McCall return false; 3962f85e193739c953358c865005855253af4f68a497John McCall 3963f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 3964f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 3965f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 3966f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 3967f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 3968f85e193739c953358c865005855253af4f68a497John McCall 3969f85e193739c953358c865005855253af4f68a497John McCall // Do we need an lvalue conversion? 3970f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay || Initializer->isGLValue()) { 3971f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS; 3972f85e193739c953358c865005855253af4f68a497John McCall ICS.setStandard(); 3973f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.setAsIdentityConversion(); 3974f85e193739c953358c865005855253af4f68a497John McCall 3975f85e193739c953358c865005855253af4f68a497John McCall QualType ResultType; 3976f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay) { 3977f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Array_To_Pointer; 3978f85e193739c953358c865005855253af4f68a497John McCall ResultType = S.Context.getPointerType(ArgPointee); 3979f85e193739c953358c865005855253af4f68a497John McCall } else { 3980f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Lvalue_To_Rvalue; 3981f85e193739c953358c865005855253af4f68a497John McCall ResultType = Initializer->getType().getNonLValueExprType(S.Context); 3982f85e193739c953358c865005855253af4f68a497John McCall } 3983f85e193739c953358c865005855253af4f68a497John McCall 3984f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, ResultType); 3985f85e193739c953358c865005855253af4f68a497John McCall } 3986f85e193739c953358c865005855253af4f68a497John McCall 3987f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 3988f85e193739c953358c865005855253af4f68a497John McCall return true; 3989f85e193739c953358c865005855253af4f68a497John McCall} 3990f85e193739c953358c865005855253af4f68a497John McCall 399120093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 399220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 399320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 399420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 39955769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 39965769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 399712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola ASTContext &Context = S.Context; 3998dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 399920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 4000dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // The semantics of initializers are as follows. The destination type is 4001dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // the type of the object or reference being initialized and the source 400220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 4003dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // defined when the initializer is a braced-init-list or when it is a 400420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 400512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 400620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 400712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola if (DestType->isDependentType() || 400813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Expr::hasAnyTypeDependentArguments(llvm::makeArrayRef(Args, NumArgs))) { 400920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 401020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 401120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 401220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 40137491c499e826682e128a400038361ebcbde30eecSebastian Redl // Almost everything is a normal sequence. 40147491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(NormalSequence); 40157491c499e826682e128a400038361ebcbde30eecSebastian Redl 4016241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall for (unsigned I = 0; I != NumArgs; ++I) 401732509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (Args[I]->getType()->isNonOverloadPlaceholderType()) { 40185acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: should we be doing this here? 401932509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall ExprResult result = S.CheckPlaceholderExpr(Args[I]); 402032509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (result.isInvalid()) { 402132509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall SetFailed(FK_PlaceholderType); 402232509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall return; 40235acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 402432509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall Args[I] = result.take(); 4025429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 4026241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall 40275acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 402820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 402920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 403099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 403120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 403220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 403320093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 403420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4035dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 40363a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl // - If the initializer is a (non-parenthesized) braced-init-list, the 40373a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl // object is list-initialized (8.5.4). 40383a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl if (Kind.getKind() != InitializationKind::IK_Direct) { 40393a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 40403a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl TryListInitialization(S, Entity, Kind, InitList, *this); 40413a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl return; 40423a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl } 404320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4044dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 404520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 404620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 404720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 404820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 404920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 405020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 405120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 405220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 405312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForReference); 405420093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 405512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 405620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 405720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4058dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 405920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 406099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 406199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 406212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryValueInitialization(S, Entity, Kind, *this); 406320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 406420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4065dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 406699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 40677663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky if (Kind.getKind() == InitializationKind::IK_Default) { 406812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryDefaultInitialization(S, Entity, Kind, *this); 406999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 407099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 407118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4072ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // - If the destination type is an array of characters, an array of 4073ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // char16_t, an array of char32_t, or an array of wchar_t, and the 4074ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // initializer is a string literal, see 8.5.2. 4075dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the destination type is an array, the program is 407620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 4077cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ArrayType *DestAT = Context.getAsArrayType(DestType)) { 407873076431605556fdbf28d287d084a73a24a8b8d4John McCall if (Initializer && isa<VariableArrayType>(DestAT)) { 407973076431605556fdbf28d287d084a73a24a8b8d4John McCall SetFailed(FK_VariableLengthArrayHasInitializer); 408073076431605556fdbf28d287d084a73a24a8b8d4John McCall return; 408173076431605556fdbf28d287d084a73a24a8b8d4John McCall } 408273076431605556fdbf28d287d084a73a24a8b8d4John McCall 4083cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Initializer && IsStringInit(Initializer, DestAT, Context)) { 408412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 4085ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return; 4086ce6c9b7da219c8640a0559f75770cfc6622de083John McCall } 4087ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 4088cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Note: as an GNU C extension, we allow initialization of an 4089cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // array from a compound literal that creates an array of the same 4090cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type, so long as the initializer has no side effects. 40914e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus && Initializer && 4092cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor isa<CompoundLiteralExpr>(Initializer->IgnoreParens()) && 4093cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Initializer->getType()->isArrayType()) { 4094cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *SourceAT 4095cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = Context.getAsArrayType(Initializer->getType()); 4096cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!hasCompatibleArrayTypes(S.Context, DestAT, SourceAT)) 409712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayTypeMismatch); 4098cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else if (Initializer->HasSideEffects(S.Context)) 409912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_NonConstantArrayInit); 4100cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else { 410112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddArrayInitStep(DestType); 4102cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 41030f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith } 41040f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // Note: as a GNU C++ extension, we allow initialization of a 41050f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // class member from a parenthesized initializer list. 41064e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (S.getLangOpts().CPlusPlus && 41070f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Entity.getKind() == InitializedEntity::EK_Member && 41080f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Initializer && isa<InitListExpr>(Initializer)) { 41090f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith TryListInitialization(S, Entity, Kind, cast<InitListExpr>(Initializer), 41100f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith *this); 41110f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith AddParenthesizedArrayInitStep(DestType); 4112cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } else if (DestAT->getElementType()->isAnyCharacterType()) 411312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 411420093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 411512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitList); 4116dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 411720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 411820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4119cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 4120f85e193739c953358c865005855253af4f68a497John McCall // Determine whether we should consider writeback conversions for 4121f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC. 41224e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie bool allowObjCWritebackConversion = S.getLangOpts().ObjCAutoRefCount && 4123f85e193739c953358c865005855253af4f68a497John McCall Entity.getKind() == InitializedEntity::EK_Parameter; 4124f85e193739c953358c865005855253af4f68a497John McCall 4125f85e193739c953358c865005855253af4f68a497John McCall // We're at the end of the line for C: it's either a write-back conversion 4126f85e193739c953358c865005855253af4f68a497John McCall // or it's a C assignment. There's no need to check anything else. 41274e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus) { 4128f85e193739c953358c865005855253af4f68a497John McCall // If allowed, check whether this is an Objective-C writeback conversion. 4129f85e193739c953358c865005855253af4f68a497John McCall if (allowObjCWritebackConversion && 413012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola tryObjCWritebackConversion(S, *this, Entity, Initializer)) { 4131f85e193739c953358c865005855253af4f68a497John McCall return; 4132f85e193739c953358c865005855253af4f68a497John McCall } 4133f85e193739c953358c865005855253af4f68a497John McCall 4134f85e193739c953358c865005855253af4f68a497John McCall // Handle initialization in C 413512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddCAssignmentStep(DestType); 413612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 4137cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 4138cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 4139dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 41404e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().CPlusPlus); 4141f85e193739c953358c865005855253af4f68a497John McCall 414220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 414320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 4144dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initialization is direct-initialization, or if it is 4145dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy-initialization where the cv-unqualified version of the 4146dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // source type is the same class as, or a derived class of, the 414720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 414820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 414920093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 415020093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 415120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 4152dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 415312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Entity.getType(), *this); 4154dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise (i.e., for the remaining copy-initialization cases), 415520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 4156dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // type to the destination type or (when a conversion function is 415720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 415820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 415920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 416020093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 416112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 416220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 416320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4164dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 416599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 416612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForScalar); 416799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 416899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 416999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 4170dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4171dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the source type is a (possibly cv-qualified) class 417220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 417399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 417412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 417512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 417620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 417720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4178dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 417920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 41804a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 418120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 4182dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // initializer expression to the cv-unqualified version of the 418320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 4184f85e193739c953358c865005855253af4f68a497John McCall 4185f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 4186f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, Entity.getType(), 4187f85e193739c953358c865005855253af4f68a497John McCall /*SuppressUserConversions*/true, 4188369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*AllowExplicitConversions*/ false, 418914d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*InOverloadResolution*/ false, 4190f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 4191f85e193739c953358c865005855253af4f68a497John McCall allowObjCWritebackConversion); 4192f85e193739c953358c865005855253af4f68a497John McCall 4193f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isStandard() && 4194f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.Second == ICK_Writeback_Conversion) { 4195f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC writeback conversion. 4196f85e193739c953358c865005855253af4f68a497John McCall 4197f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 4198f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 4199f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 4200f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *Param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 4201f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (Param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 4202f85e193739c953358c865005855253af4f68a497John McCall 4203f85e193739c953358c865005855253af4f68a497John McCall // If there was an lvalue adjustment, add it as a separate conversion. 4204f85e193739c953358c865005855253af4f68a497John McCall if (ICS.Standard.First == ICK_Array_To_Pointer || 4205f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First == ICK_Lvalue_To_Rvalue) { 4206f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence LvalueICS; 4207f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.setStandard(); 4208f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAsIdentityConversion(); 4209f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAllToTypes(ICS.Standard.getToType(0)); 4210f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.First = ICS.Standard.First; 421112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(LvalueICS, ICS.Standard.getToType(0)); 4212f85e193739c953358c865005855253af4f68a497John McCall } 421312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 421412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 4215f85e193739c953358c865005855253af4f68a497John McCall } else if (ICS.isBad()) { 42161be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor DeclAccessPair dap; 42171be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor if (Initializer->getType() == Context.OverloadTy && 42181be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor !S.ResolveAddressOfOverloadedFunction(Initializer 42191be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor , DestType, false, dap)) 422012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 42218e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor else 422212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_ConversionFailed); 4223f85e193739c953358c865005855253af4f68a497John McCall } else { 422412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(ICS, Entity.getType()); 4225856d3798af7c2f7251e4a295f3da7a09ce4c62abJohn McCall 422612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 42278e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor } 422820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 422920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 423020093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 42315f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<Step>::iterator Step = Steps.begin(), 423220093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 423320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 423420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 423520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 423620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 423720093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 423820093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 423920093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 4240dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic Sema::AssignmentAction 424118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 424218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 424318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 424418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 4245a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Exception: 4246a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Base: 4247059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 424818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 424918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 425018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 4251dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (Entity.getDecl() && 4252688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 4253688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 4254688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 425518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 425618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 425718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 425818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 425918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 426018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 426118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 426218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 4263dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 426418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 4265d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 4266d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42670c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4268310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42694773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 427018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 427118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 427218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42737530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 427418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 427518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42764154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 42774154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 42782f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 427918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 42801b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 42811b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 42822f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 428318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 428418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 428518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 4286059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 4287d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4289a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 4290310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42914773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 429218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 4293dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 429418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 429518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 429618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 429718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 4298dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 429918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 430018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 430118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 43024154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 43034154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 43044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 43054154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 43064154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 43074154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 43084154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 43094154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 4310059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 43114154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 43120c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4313310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 43144773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 43154154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 4316dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 43174154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 43184154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 43194154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 43204154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 43214154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 43224154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 43234154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 4324dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4325dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi llvm_unreachable("missed an InitializedEntity kind?"); 43264154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 43274154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 432883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Look for copy and move constructors and constructor templates, for 432983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// copying an object via direct-initialization (per C++11 [dcl.init]p16). 433083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void LookupCopyAndMoveConstructors(Sema &S, 433183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet &CandidateSet, 433283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXRecordDecl *Class, 433383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 433483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclContext::lookup_iterator Con, ConEnd; 433583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith for (llvm::tie(Con, ConEnd) = S.LookupConstructors(Class); 433683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Con != ConEnd; ++Con) { 433783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXConstructorDecl *Constructor = 0; 433883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 433983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if ((Constructor = dyn_cast<CXXConstructorDecl>(*Con))) { 434083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle copy/moveconstructors, only. 434183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor || Constructor->isInvalidDecl() || 434283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isCopyOrMoveConstructor() || 434383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 434483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 434683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 434783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(Constructor, Constructor->getAccess()); 434883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddOverloadCandidate(Constructor, FoundDecl, 434913a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CurInitExpr, CandidateSet); 435083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 435183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 435283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 435383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle constructor templates. 435483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith FunctionTemplateDecl *ConstructorTmpl = cast<FunctionTemplateDecl>(*Con); 435583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (ConstructorTmpl->isInvalidDecl()) 435683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 435783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 435883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Constructor = cast<CXXConstructorDecl>( 435983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith ConstructorTmpl->getTemplatedDecl()); 436083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 436183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 436283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 436383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Do we need to limit this to copy-constructor-like 436483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // candidates? 436583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 436683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(ConstructorTmpl, ConstructorTmpl->getAccess()); 436783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 0, 436813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CurInitExpr, CandidateSet, true); 436983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 437083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 437183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 437283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Get the location at which initialization diagnostics should appear. 437383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic SourceLocation getInitializationLoc(const InitializedEntity &Entity, 437483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *Initializer) { 437583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (Entity.getKind()) { 437683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Result: 437783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getReturnLoc(); 437883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 437983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Exception: 438083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getThrowLoc(); 438183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 438283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Variable: 438383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getDecl()->getLocation(); 438483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 43854773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 43864773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor return Entity.getCaptureLoc(); 43874773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor 438883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ArrayElement: 438983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Member: 439083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Parameter: 439183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Temporary: 439283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_New: 439383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Base: 439483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Delegating: 439583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_VectorElement: 439683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ComplexElement: 439783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_BlockElement: 439883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Initializer->getLocStart(); 439983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 440083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith llvm_unreachable("missed an InitializedEntity kind?"); 440183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 440283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4403523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 4404523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 4405523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 4406523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4407523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 4408523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 440963e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// \param T The type of the temporary object, which must either be 4410523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 4411523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4412523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param Enter The entity being initialized. 4413523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4414523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 4415523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4416523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 4417523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 4418523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 4419523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4420523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 4421523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 4422523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 442360d7b3a319d84d688752be3870615ac0f111fb16John McCallstatic ExprResult CopyObject(Sema &S, 44248fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor QualType T, 44258fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor const InitializedEntity &Entity, 44268fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor ExprResult CurInit, 44278fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor bool IsExtraneousCopy) { 44283fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 44291b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 4430dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXRecordDecl *Class = 0; 4431523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 44322f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 44332f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 44342f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return move(CurInit); 44352f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 4436f5d8f466c3eebaffc51468812bdcbe7f0fe4891aDouglas Gregor // C++0x [class.copy]p32: 44372f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 44382f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 44392f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 44402f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 44412f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 44422f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 44432f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 44442f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 44452f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 4446dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // 44472f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 44483c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // elision for return statements and throw expressions are handled as part 4449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // of constructor initialization, while copy elision for exception handlers 44503c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // is handled by the run-time. 4451558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool Elidable = CurInitExpr->isTemporaryObject(S.Context, Class); 445283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInit.get()); 4453f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4454dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Make sure that the type we are copying is complete. 4455f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor if (S.RequireCompleteType(Loc, T, S.PDiag(diag::err_temp_copy_incomplete))) 4456f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor return move(CurInit); 4457f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4458cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Perform overload resolution using the class's copy/move constructors. 445983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Only consider constructors and constructor templates. Per 446083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // C++0x [dcl.init]p16, second bullet to class types, this initialization 446183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // is direct-initialization. 44625769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 446383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors(S, CandidateSet, Class, CurInitExpr); 4464dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 44657cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 44667cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 446718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 446825ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth switch (CandidateSet.BestViableFunction(S, Loc, Best)) { 446918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 447018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4471dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 447218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 447357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext() 447457d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin ? diag::ext_rvalue_to_reference_temp_copy_no_viable 447557d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin : diag::err_temp_copy_no_viable) 44767abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 447718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 447813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr); 447957d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin if (!IsExtraneousCopy || S.isSFINAEContext()) 4480f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 448157d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin return move(CurInit); 4482dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 448318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 448418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 44857abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 448618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 448713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr); 4488f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4489dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 449018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 449118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 44927abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 449318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 44946c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 4495f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 449618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 449718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 44983fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 4499ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 45003fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 4501523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 45029a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 450357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin Best->FoundDecl.getAccess(), IsExtraneousCopy); 4504523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4505523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 4506523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 4507523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 45082559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 45092559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 45102559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 45112559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 45122559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 45132559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 45142559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 45152559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 45162559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 45172559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 45182559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 45192559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.PDiag(diag::err_call_incomplete_argument))) 45202559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 45212559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 45222559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 45232559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 45242559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 45252559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 45262559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 4527523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4528523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 4529523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 4530dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 45315f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(Loc, Constructor); 453225ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 45333fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 4534523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 4535523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 4536f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall if (S.CompleteConstructorCall(Constructor, MultiExprArg(&CurInitExpr, 1), 45373fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 4538f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 45393fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 4540b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // Actually perform the constructor call. 4541b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 45427a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 45437cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 45447a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 4545428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 4546428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 4547dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4548b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // If we're supposed to bind temporaries, do so. 4549b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) 4550b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 4551b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor return move(CurInit); 455218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 455320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 455483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Check whether elidable copy construction for binding a reference to 455583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// a temporary would have succeeded if we were building in C++98 mode, for 455683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// -Wc++98-compat. 455783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 455883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 455983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 45604e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().CPlusPlus0x); 456183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const RecordType *Record = CurInitExpr->getType()->getAs<RecordType>(); 456383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Record) 456483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 456583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInitExpr); 456783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (S.Diags.getDiagnosticLevel(diag::warn_cxx98_compat_temp_copy, Loc) 456883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith == DiagnosticsEngine::Ignored) 456983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 457083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Find constructors which would have been considered. 457283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet CandidateSet(Loc); 457383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors( 457483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S, CandidateSet, cast<CXXRecordDecl>(Record->getDecl()), CurInitExpr); 457583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Perform overload resolution. 457783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet::iterator Best; 457883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadingResult OR = CandidateSet.BestViableFunction(S, Loc, Best); 457983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith PartialDiagnostic Diag = S.PDiag(diag::warn_cxx98_compat_temp_copy) 458183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << OR << (int)Entity.getKind() << CurInitExpr->getType() 458283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << CurInitExpr->getSourceRange(); 458383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (OR) { 458583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Success: 458683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.CheckConstructorAccess(Loc, cast<CXXConstructorDecl>(Best->Function), 458783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Best->FoundDecl.getAccess(), Diag); 458883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Check default arguments as far as that's possible. 458983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 459083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 459183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_No_Viable_Function: 459283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 459313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr); 459483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 459583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 459683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Ambiguous: 459783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 459813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr); 459983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 460083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 460183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Deleted: 460283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 46036c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 460483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 460583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 460683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 460783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4608a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 4609a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 4610a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 4611a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 4612a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 4613a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 4614a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 4615a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 4616a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 4617a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 4618a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 4619a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 4620a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 4621a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 46223b80232b50c29b245e674f5aa02047b408e41018Sebastian Redlstatic bool isReferenceBinding(const InitializationSequence::Step &s) { 46233b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return s.Kind == InitializationSequence::SK_BindReference || 46243b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl s.Kind == InitializationSequence::SK_BindReferenceToTemporary; 46253b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl} 46263b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl 462710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic ExprResult 462810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian RedlPerformConstructorInitialization(Sema &S, 462910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 463010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 463110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Args, 463210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationSequence::Step& Step, 463310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool &ConstructorInitRequiresZeroInit) { 463410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumArgs = Args.size(); 463510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructorDecl *Constructor 463610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXConstructorDecl>(Step.Function.Function); 463710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = Step.Function.HadMultipleCandidates; 463810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 463910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Build a call to the selected constructor. 464010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ASTOwningVector<Expr*> ConstructorArgs(S); 464110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) 464210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ? Kind.getEqualLoc() 464310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl : Kind.getLocation(); 464410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 464510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default) { 464610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Force even a trivial, implicit default constructor to be 464710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // semantically checked. We do this explicitly because we don't build 464810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // the definition for completely trivial constructors. 464928e4702a1f978213ff945fe4369e3be7444bf320Matt Beaumont-Gay assert(Constructor->getParent() && "No parent class for constructor."); 465010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Constructor->isDefaulted() && Constructor->isDefaultConstructor() && 46515d86f61b9c54429fc3f9149fc0f7009010a644a1Douglas Gregor Constructor->isTrivial() && !Constructor->isUsed(false)) 465210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DefineImplicitDefaultConstructor(Loc, Constructor); 465310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 465410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ExprResult CurInit = S.Owned((Expr *)0); 465610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 4657ed878af7914df535b32d64f555fa118413186672Douglas Gregor // C++ [over.match.copy]p1: 4658ed878af7914df535b32d64f555fa118413186672Douglas Gregor // - When initializing a temporary to be bound to the first parameter 4659ed878af7914df535b32d64f555fa118413186672Douglas Gregor // of a constructor that takes a reference to possibly cv-qualified 4660ed878af7914df535b32d64f555fa118413186672Douglas Gregor // T as its first argument, called with a single argument in the 4661ed878af7914df535b32d64f555fa118413186672Douglas Gregor // context of direct-initialization, explicit conversion functions 4662ed878af7914df535b32d64f555fa118413186672Douglas Gregor // are also considered. 4663ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConv = Kind.AllowExplicit() && !Kind.isCopyInit() && 4664ed878af7914df535b32d64f555fa118413186672Douglas Gregor Args.size() == 1 && 4665ed878af7914df535b32d64f555fa118413186672Douglas Gregor Constructor->isCopyOrMoveConstructor(); 4666ed878af7914df535b32d64f555fa118413186672Douglas Gregor 466710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Determine the arguments required to actually perform the constructor 466810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // call. 466910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.CompleteConstructorCall(Constructor, move(Args), 4670ed878af7914df535b32d64f555fa118413186672Douglas Gregor Loc, ConstructorArgs, 4671ed878af7914df535b32d64f555fa118413186672Douglas Gregor AllowExplicitConv)) 467210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 467310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 467410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 467510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Temporary && 4676188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (Kind.getKind() == InitializationKind::IK_DirectList || 4677188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (NumArgs != 1 && // FIXME: Hack to work around cast weirdness 4678188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (Kind.getKind() == InitializationKind::IK_Direct || 4679188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl Kind.getKind() == InitializationKind::IK_Value)))) { 468010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // An explicitly-constructed temporary, e.g., X(1, 2). 468110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumExprs = ConstructorArgs.size(); 468210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Exprs = (Expr **)ConstructorArgs.take(); 46835f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(Loc, Constructor); 468410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Constructor, Loc); 468510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 468610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 468710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!TSInfo) 468810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo = S.Context.getTrivialTypeSourceInfo(Entity.getType(), Loc); 4689188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl SourceRange ParenRange; 4690188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl if (Kind.getKind() != InitializationKind::IK_DirectList) 4691188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl ParenRange = Kind.getParenRange(); 469210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 469310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 469410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 469510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo, 469610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Exprs, 469710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl NumExprs, 4698188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl ParenRange, 469910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 470010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit)); 470110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else { 470210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::ConstructionKind ConstructKind = 470310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_Complete; 470410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 470510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Base) { 470610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? 470710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_VirtualBase : 470810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_NonVirtualBase; 470910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else if (Entity.getKind() == InitializedEntity::EK_Delegating) { 471010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = CXXConstructExpr::CK_Delegating; 471110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 471210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 471310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only get the parenthesis range if it is a direct construction. 471410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceRange parenRange = 471510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Direct ? 471610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getParenRange() : SourceRange(); 471710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 471810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If the entity allows NRVO, mark the construction as elidable 471910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // unconditionally. 472010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.allowsNRVO()) 472110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 472210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, /*Elidable=*/true, 472310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move_arg(ConstructorArgs), 472410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 472510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 472610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 472710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 472810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 472910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 473010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 473110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move_arg(ConstructorArgs), 473210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 473310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 473410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 473510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 473610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 473710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (CurInit.isInvalid()) 473810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 473910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 474010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only check access if all of that succeeded. 474110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckConstructorAccess(Loc, Constructor, Entity, 474210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Step.Function.FoundDecl.getAccess()); 474310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Step.Function.FoundDecl, Loc); 474410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 474510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (shouldBindAsTemporary(Entity)) 474610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 474710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 474810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return move(CurInit); 474910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 475010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 4751dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 475220093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 475320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 475420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 4755f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiExprArg Args, 4756d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 4757d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (Failed()) { 475820093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 475920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Diagnose(S, Entity, Kind, (Expr **)Args.release(), NumArgs); 4760f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 476120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4762dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 47637491c499e826682e128a400038361ebcbde30eecSebastian Redl if (getKind() == DependentSequence) { 4764d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 4765d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 4766d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 4767d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 4768d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 4769d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 4770d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 4771d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 4772d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 4773d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 4774d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 4775d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 4776d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 4777d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 4778d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 4779d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (isa<InitListExpr>((Expr *)Args.get()[0])) { 4780d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 4781d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 4782d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 4783d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 4784d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 4785d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 4786d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 4787d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 4788d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 4789d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 4790d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4791d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4792d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 4793d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 4794d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 4795d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 4796d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 4797d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 4798d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4799d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4800d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4801d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 48025b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl if (Kind.getKind() == InitializationKind::IK_Direct && 48035b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl !Kind.isExplicitCast()) { 48045b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl // Rebuild the ParenListExpr. 48055b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl SourceRange ParenRange = Kind.getParenRange(); 48065b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl return S.ActOnParenListExpr(ParenRange.getBegin(), ParenRange.getEnd(), 48075b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl move(Args)); 48085b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl } 48090d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek assert(Kind.getKind() == InitializationKind::IK_Copy || 48100d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek Kind.isExplicitCast()); 48110d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek return ExprResult(Args.release()[0]); 481220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 481320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 48147491c499e826682e128a400038361ebcbde30eecSebastian Redl // No steps means no initialization. 48157491c499e826682e128a400038361ebcbde30eecSebastian Redl if (Steps.empty()) 481699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 4817dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4818d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 4819d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 4820a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 4821a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 4822d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 4823a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 4824d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 482520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 482660d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult CurInit = S.Owned((Expr *)0); 4827dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4828dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // For initialization steps that start with a single initializer, 482999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 483099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 483199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 483218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 483318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 4834906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 483518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 483618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 483718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 4838523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 483918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 484018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 4841906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 484218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 484318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 48448713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 484518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 484613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 484713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 484818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 4849cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 4850cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ObjCObjectConversion: 4851f85e193739c953358c865005855253af4f68a497John McCall case SK_ArrayInit: 48520f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 4853f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 4854f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 48552b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_ProduceObjCObject: 48562b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: { 485718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 4858429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = Args.get()[0]; 4859429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (!CurInit.get()) return ExprError(); 486018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4861f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall } 4862dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 486318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 486418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 486518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 486620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4867dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4868dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Walk through the computed steps for the initialization sequence, 486920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 487016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 487120093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 487220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 487320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 4874f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4875dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4876429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get() ? CurInit.get()->getType() : QualType(); 4877dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 487820093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 487920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4880dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Overload resolution determined which function invoke; update the 488120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 4882429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckAddressOfMemberAccess(CurInit.get(), Step->Function.FoundDecl); 4883b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation()); 4884b13b737a2450167c82e148590e8019b839ce6b98John McCall CurInit = S.FixOverloadedFunctionReference(move(CurInit), 48856bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 48869aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 488720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4888dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 488920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 4890906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 489120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 489220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 489320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 4894dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4895f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXCastPath BasePath; 48965cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 489720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 489820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 489920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 4900429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getLocStart(), 4901429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getSourceRange(), 49025cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 4903f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4904dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 49056fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (S.BasePathInvolvesVirtualBase(BasePath)) { 49066fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor QualType T = SourceType; 49076fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const PointerType *Pointer = T->getAs<PointerType>()) 49086fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor T = Pointer->getPointeeType(); 49096fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const RecordType *RecordTy = T->getAs<RecordType>()) 4910429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkVTableUsed(CurInit.get()->getLocStart(), 49116fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor cast<CXXRecordDecl>(RecordTy->getDecl())); 49126fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor } 49136fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 49145baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 4915906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_CastDerivedToBaseLValue ? 49165baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 4917906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_CastDerivedToBaseXValue ? 49185baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 49195baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 4920f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 4921f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Step->Type, 49222de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_DerivedToBase, 49235baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall CurInit.get(), 49245baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall &BasePath, VK)); 492520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 492620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4927dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 492820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 4929429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (FieldDecl *BitField = CurInit.get()->getBitField()) { 493020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 493120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 4932d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 493320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 4934429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 493520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 4936f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 493720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4938a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 4939429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.get()->refersToVectorElement()) { 494041593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 4941093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 4942093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 4943429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 4944a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 4945f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4946093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 4947dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 494820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 494920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 495020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 4951429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 4952f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 49533aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 495420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 49553aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 495620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 495720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 4958429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 4959f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 496020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 496103e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor // Materialize the temporary into memory. 4962b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit = new (S.Context) MaterializeTemporaryExpr( 4963b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor Entity.getType().getNonReferenceType(), 4964b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit.get(), 496503e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Entity.getType()->isLValueReferenceType()); 4966d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 4967d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // If we're binding to an Objective-C object that has lifetime, we 4968d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // need cleanups. 49694e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && 4970d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor CurInit.get()->getType()->isObjCLifetimeType()) 4971d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor S.ExprNeedsCleanups = true; 4972d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 497320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4974dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4975523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 4976dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = CopyObject(S, Step->Type, Entity, move(CurInit), 4977523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 4978523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 4979523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 498020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 498120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 498220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 4983daa8e4e888758d55a7a759dd4a91b83921cef222John McCall CastKind CastKind; 498418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 49859aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 49869aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 49877cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = Step->Function.HadMultipleCandidates; 49884154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 4989b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 499020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 4991ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 4992429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SourceLocation Loc = CurInit.get()->getLocStart(); 499320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 4994b13b737a2450167c82e148590e8019b839ce6b98John McCall 499520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 499620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 4997429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Expr *Arg = CurInit.get(); 499820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 4999429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley MultiExprArg(&Arg, 1), 500020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 5001f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5002dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5003f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // Build an expression that constructs a temporary. 5004dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 50057a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 50067cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 50077a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 5008428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 5009428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 501020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 5011f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5012b13b737a2450167c82e148590e8019b839ce6b98John McCall 50139a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 50149aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 5015b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 5016dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50172de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_ConstructorConversion; 501818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 501918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 502018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 502118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 5022dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50234154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 502420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 502520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 5026b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 5027429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckMemberOperatorAccess(Kind.getLocation(), CurInit.get(), 0, 50289aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 5029b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 5030dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5031dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Should we move this initialization into a separate 503220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 503320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 5034429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5035429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformObjectArgumentInitialization(CurInit.take(), /*Qualifier=*/0, 5036429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley FoundFn, Conversion); 5037429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if(CurInitExprRes.isInvalid()) 5038f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5039429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 5040dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 504120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 50427cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara CurInit = S.BuildCXXMemberCallExpr(CurInit.get(), FoundFn, Conversion, 50437cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates); 504420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 5045f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5046dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50472de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_UserDefinedConversion; 5048dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50494154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 505020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5051dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50523b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl bool RequiresCopy = !IsCopy && !isReferenceBinding(Steps.back()); 5053960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara bool MaybeBindToTemp = RequiresCopy || shouldBindAsTemporary(Entity); 5054960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara 5055960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (!MaybeBindToTemp && CreatedObject && shouldDestroyTemporary(Entity)) { 5056429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType T = CurInit.get()->getType(); 50574154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 5058dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXDestructorDecl *Destructor 5059db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); 5060429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckDestructorAccess(CurInit.get()->getLocStart(), Destructor, 50614154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 50625f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(CurInit.get()->getLocStart(), Destructor); 5063429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.DiagnoseUseOfDecl(Destructor, CurInit.get()->getLocStart()); 50644154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 50654154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 5066dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5067f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 5068429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getType(), 5069429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CastKind, CurInit.get(), 0, 5070104be6fc8de206c9b79b241b36ebaf9407b3be08Eli Friedman CurInit.get()->getValueKind())); 5071960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (MaybeBindToTemp) 5072960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 50732f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 5074523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 5075523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor move(CurInit), /*IsExtraneousCopy=*/false); 507620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 507720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5078906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 507920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 5080906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5081906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionRValue: { 508220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 50835baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 5084906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_QualificationConversionLValue ? 50855baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 5086906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_QualificationConversionXValue ? 50875baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 50885baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 5089429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, CK_NoOp, VK); 509020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5091906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 5092906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5093f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 5094f85e193739c953358c865005855253af4f68a497John McCall Sema::CheckedConversionKind CCK 5095f85e193739c953358c865005855253af4f68a497John McCall = Kind.isCStyleCast()? Sema::CCK_CStyleCast 5096f85e193739c953358c865005855253af4f68a497John McCall : Kind.isFunctionalCast()? Sema::CCK_FunctionalCast 5097c8d7f586180995ba33d03c0f6115b6a7bdefe326Richard Smith : Kind.isExplicitCast()? Sema::CCK_OtherCast 5098f85e193739c953358c865005855253af4f68a497John McCall : Sema::CCK_ImplicitConversion; 5099429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5100429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformImplicitConversion(CurInit.get(), Step->Type, *Step->ICS, 5101f85e193739c953358c865005855253af4f68a497John McCall getAssignmentAction(Entity), CCK); 5102429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5103f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5104429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 510520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5106f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 5107dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5108d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 5109429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 511013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Hack: We must pass *ResultType if available in order to set the type 511113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // of arrays, e.g. in 'int ar[] = {1, 2, 3};'. 511213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // But in 'const X &x = {1, 2, 3};' we're supposed to initialize a 511313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // temporary, not a reference, so we should pass Ty. 511413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Worst case: 'const int (&arref)[] = {1, 2, 3};'. 511513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Since this step is never used for a reference directly, we explicitly 511613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // unwrap references here and rewrap them afterwards. 511713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // We also need to create a InitializeTemporary entity for this. 511813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType Ty = ResultType ? ResultType->getNonReferenceType() : Step->Type; 5119cbf82092cdb9e3a2e8528384c878f2084a14981cSebastian Redl bool IsTemporary = Entity.getType()->isReferenceType(); 512013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(Ty); 512113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListChecker PerformInitList(S, IsTemporary ? TempEntity : Entity, 512213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitList, Ty, /*VerifyOnly=*/false, 5123168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 51244e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 512514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (PerformInitList.HadError()) 5126f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5127d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 512813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResultType) { 512913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if ((*ResultType)->isRValueReferenceType()) 513013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getRValueReferenceType(Ty); 513113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else if ((*ResultType)->isLValueReferenceType()) 513213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getLValueReferenceType(Ty, 513313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (*ResultType)->getAs<LValueReferenceType>()->isSpelledAsLValue()); 513413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl *ResultType = Ty; 513513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 513613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 513713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *StructuredInitList = 513813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl PerformInitList.getFullyStructuredList(); 5139d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 514013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(StructuredInitList); 5141d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5142d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 514351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 514410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl case SK_ListConstructorCall: { 5145168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // When an initializer list is passed for a parameter of type "reference 5146168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // to object", we don't get an EK_Temporary entity, but instead an 5147168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // EK_Parameter entity with reference type. 5148bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // FIXME: This is a hack. What we really should do is create a user 5149bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // conversion step for this case, but this makes it considerably more 5150bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // complicated. For now, this will do. 5151168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( 5152168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Entity.getType().getNonReferenceType()); 5153168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool UseTemporary = Entity.getType()->isReferenceType(); 515410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 515510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Arg(InitList->getInits(), InitList->getNumInits()); 5156168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity : 5157168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Entity, 5158168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind, move(Arg), *Step, 515910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 516010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl break; 516110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 51628713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 516313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 516413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(cast<InitListExpr>(CurInit.take())->getInit(0)); 516513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 516613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 516713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: { 516813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *E = CurInit.take(); 516913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic = Step->WrappingSyntacticList; 517013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *ILE = new (S.Context) InitListExpr(S.Context, 517113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Syntactic->getLBraceLoc(), &E, 1, Syntactic->getRBraceLoc()); 517213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setSyntacticForm(Syntactic); 517313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setType(E->getType()); 517413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setValueKind(E->getValueKind()); 517513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(ILE); 517613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 517713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 517813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 5179bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl case SK_ConstructorInitialization: { 5180bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // When an initializer list is passed for a parameter of type "reference 5181bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // to object", we don't get an EK_Temporary entity, but instead an 5182bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // EK_Parameter entity with reference type. 5183bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // FIXME: This is a hack. What we really should do is create a user 5184bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // conversion step for this case, but this makes it considerably more 5185bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // complicated. For now, this will do. 5186bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( 5187bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl Entity.getType().getNonReferenceType()); 5188bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl bool UseTemporary = Entity.getType()->isReferenceType(); 5189bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity 5190bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl : Entity, 5191bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl Kind, move(Args), *Step, 519210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 519351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5194bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl } 5195dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 519671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 519716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 519816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 5199dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (NextStep != StepEnd && 520016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor NextStep->Kind == SK_ConstructorInitialization) { 520116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 520216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 520316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 520416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 52054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().CPlusPlus && 520616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 5207ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 5208ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor if (!TSInfo) 5209dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TSInfo = S.Context.getTrivialTypeSourceInfo(Step->Type, 5210ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor Kind.getRange().getBegin()); 5211ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor 5212ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor CurInit = S.Owned(new (S.Context) CXXScalarValueInitExpr( 5213ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo->getType().getNonLValueExprType(S.Context), 5214ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo, 521571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 521616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 521771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 521816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 521971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 522071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 522118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 522218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 5223429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get()->getType(); 5224429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = move(CurInit); 522518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 5226429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckSingleAssignmentConstraints(Step->Type, Result); 5227429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 5228429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 5229429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(Result); 5230aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5231aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 5232429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = move(CurInit); 5233aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 5234aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 5235429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExprRes) 5236aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 5237aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 5238429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5239429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 5240429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 5241aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5242a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 524318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 524418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 5245429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get(), 5246a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 5247a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 5248a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 5249f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5250a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 5251a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 525218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 525318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 5254cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 5255cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 5256cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 5257429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CheckStringInit(CurInit.get(), ResultType ? *ResultType : Ty, 5258fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall S.Context.getAsArrayType(Ty), S); 5259cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 5260cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 5261569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 5262569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 5263429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, 52642de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_ObjCObjectLValueCast, 5265c1c0dfb376b829b94d4c61e9f358ce23e6aa3169Eli Friedman CurInit.get()->getValueKind()); 5266569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 5267cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5268cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 5269cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Okay: we checked everything before creating this step. Note that 5270cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // this is a GNU extension. 5271cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), diag::ext_array_init_copy) 5272429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << Step->Type << CurInit.get()->getType() 5273429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 5274cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5275cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the destination type is an incomplete array type, update the 5276cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type accordingly. 5277cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (ResultType) { 5278cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const IncompleteArrayType *IncompleteDest 5279cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = S.Context.getAsIncompleteArrayType(Step->Type)) { 5280cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ConstantArrayType *ConstantSource 5281429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley = S.Context.getAsConstantArrayType(CurInit.get()->getType())) { 5282cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor *ResultType = S.Context.getConstantArrayType( 5283cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor IncompleteDest->getElementType(), 5284cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ConstantSource->getSize(), 5285cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ArrayType::Normal, 0); 5286cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5287cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5288cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5289f85e193739c953358c865005855253af4f68a497John McCall break; 5290cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 52910f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 52920f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // Okay: we checked everything before creating this step. Note that 52930f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // this is a GNU extension. 52940f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Diag(Kind.getLocation(), diag::ext_array_init_parens) 52950f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith << CurInit.get()->getSourceRange(); 52960f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith break; 52970f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 5298f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 5299f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 5300f85e193739c953358c865005855253af4f68a497John McCall checkIndirectCopyRestoreSource(S, CurInit.get()); 5301f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(new (S.Context) 5302f85e193739c953358c865005855253af4f68a497John McCall ObjCIndirectCopyRestoreExpr(CurInit.take(), Step->Type, 5303f85e193739c953358c865005855253af4f68a497John McCall Step->Kind == SK_PassByIndirectCopyRestore)); 5304f85e193739c953358c865005855253af4f68a497John McCall break; 5305f85e193739c953358c865005855253af4f68a497John McCall 5306f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 5307f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, Step->Type, 530833e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall CK_ARCProduceObject, 5309f85e193739c953358c865005855253af4f68a497John McCall CurInit.take(), 0, VK_RValue)); 5310cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 53112b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 53122b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: { 53132b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType Dest = Step->Type; 53142b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 53152b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl bool Success = S.isStdInitializerList(Dest, &E); 53162b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl (void)Success; 53172b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(Success && "Destination type changed?"); 53182835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl 53192835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl // If the element type has a destructor, check it. 53202835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (CXXRecordDecl *RD = E->getAsCXXRecordDecl()) { 53212835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (!RD->hasIrrelevantDestructor()) { 53222835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (CXXDestructorDecl *Destructor = S.LookupDestructor(RD)) { 53232835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.MarkFunctionReferenced(Kind.getLocation(), Destructor); 53242835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.CheckDestructorAccess(Kind.getLocation(), Destructor, 53252835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.PDiag(diag::err_access_dtor_temp) << E); 53262835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.DiagnoseUseOfDecl(Destructor, Kind.getLocation()); 53272835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53282835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53292835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53302835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl 53312b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr *ILE = cast<InitListExpr>(CurInit.take()); 53322b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl unsigned NumInits = ILE->getNumInits(); 53332b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl SmallVector<Expr*, 16> Converted(NumInits); 53342b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 53352b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 53362b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 53372b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl NumInits), 53382b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 53392b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element =InitializedEntity::InitializeElement(S.Context, 53402b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 53412b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl for (unsigned i = 0; i < NumInits; ++i) { 53422b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 53432b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Init = S.Owned(ILE->getInit(i)); 53442b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Res = S.PerformCopyInitialization(Element, 53452b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Init.get()->getExprLoc(), 53462b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Init); 53472b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(!Res.isInvalid() && "Result changed since try phase."); 53482b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Converted[i] = Res.take(); 53492b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 53502b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr *Semantic = new (S.Context) 53512b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr(S.Context, ILE->getLBraceLoc(), 53522b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Converted.data(), NumInits, ILE->getRBraceLoc()); 53532b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Semantic->setSyntacticForm(ILE); 53542b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Semantic->setType(Dest); 535532cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl Semantic->setInitializesStdInitializerList(); 53562b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl CurInit = S.Owned(Semantic); 53572b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 53582b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 535920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 536020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 536115d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall 536215d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall // Diagnose non-fatal problems with the completed initialization. 536315d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall if (Entity.getKind() == InitializedEntity::EK_Member && 536415d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl())->isBitField()) 536515d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall S.CheckBitFieldInitialization(Kind.getLocation(), 536615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl()), 536715d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall CurInit.get()); 5368dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 536920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return move(CurInit); 537020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 537120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 537220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 537320093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 537420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 5375dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumibool InitializationSequence::Diagnose(Sema &S, 537620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 537720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 537820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 5379d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 538020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 5381dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5382d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 538320093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 538420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 53859db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 53869db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 53879db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 53889db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 53899db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 53909db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 53919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 539220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5393dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 539420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 539520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 539620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 539720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 539820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5399dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5400cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5401cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5402cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), 5403cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor (Failure == FK_ArrayTypeMismatch 5404cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ? diag::err_array_init_different_type 5405cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor : diag::err_array_init_non_constant_array)) 5406cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << DestType.getNonReferenceType() 5407cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getType() 5408cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getSourceRange(); 5409cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5410cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 541173076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 541273076431605556fdbf28d287d084a73a24a8b8d4John McCall S.Diag(Kind.getLocation(), diag::err_variable_object_no_init) 541373076431605556fdbf28d287d084a73a24a8b8d4John McCall << Args[0]->getSourceRange(); 541473076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 541573076431605556fdbf28d287d084a73a24a8b8d4John McCall 54166bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 54176bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 5418dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.ResolveAddressOfOverloadedFunction(Args[0], 541920093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 54206bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 54216bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 542220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 54236bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 5424dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 542520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 54264a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 542720093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 542820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 542918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 543018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 543118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 543218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 543318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 543418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 543518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 543618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 543718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 543813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 543913a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 544020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5441dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 544220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 544320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 544420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 544520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 544613a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, 544713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 544820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 545020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 545120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 545220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 545320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 545420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 5455120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 54568fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best, 54578fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor true); 545820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 54596c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 546020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 54619f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 546220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 546320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 546420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5465dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 546620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 54679f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 546820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 546920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5470dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 547120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 547213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (isa<InitListExpr>(Args[0])) { 547313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Diag(Kind.getLocation(), 547413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl diag::err_lvalue_reference_bind_to_initlist) 547513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType().isVolatileQualified() 547613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType() 547713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << Args[0]->getSourceRange(); 547813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 547913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 548013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Intentional fallthrough 548113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 548220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5483dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Kind.getLocation(), 548420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 548520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 548620093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 5487ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 548820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 548920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 549020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 549120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5492dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 549320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 549420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 5495fb5d7efc279335bde2cdc0a73da525d6b28201e9Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getType() 549620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 549720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5498dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 549920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 550020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 550120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 550220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 550320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 550420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5505dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 550620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 550720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 550820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 55097eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 551020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 551120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 5512926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5513926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5514926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 551520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5516dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 55171be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor case FK_ConversionFailed: { 55181be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor QualType FromType = Args[0]->getType(); 55196efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu PartialDiagnostic PDiag = S.PDiag(diag::err_init_conversion_failed) 552018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 552120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 55227eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 55231be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor << FromType 552420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 55256efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.HandleFunctionTypeMismatch(PDiag, FromType, DestType); 55266efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.Diag(Kind.getLocation(), PDiag); 5527926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5528926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5529926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 5530d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 55311be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor } 5532429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5533429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5534429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley // No-op. This error has already been reported. 5535429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5536429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5537d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 553899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 553999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 554099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 554119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(InitList->getInit(0)->getLocEnd(), 554299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 5543dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi else 554419311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(Args[0]->getLocEnd(), Args[NumArgs - 1]->getLocEnd()); 5545d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 554619311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R.setBegin(S.PP.getLocForEndOfToken(R.getBegin())); 554719311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor if (Kind.isCStyleOrFunctionalCast()) 554819311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_builtin_func_cast_more_than_one_arg) 554919311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << R; 555019311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor else 555119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 555219311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << /*scalar=*/2 << R; 5553d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5554d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 5555d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5556d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 5557d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 5558d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 5559d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5560d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5561d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 5562d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 5563d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 5564d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5565dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5566cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 556751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 556851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 556951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 5570dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ArgsRange = SourceRange(Args[0]->getLocStart(), 557151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 5572dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5573cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl if (Failure == FK_ListConstructorOverloadFailed) { 5574cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl assert(NumArgs == 1 && "List construction from other than 1 argument."); 5575cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitListExpr *InitList = cast<InitListExpr>(Args[0]); 5576cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl Args = InitList->getInits(); 5577cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl NumArgs = InitList->getNumInits(); 5578cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl } 5579cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl 558051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 558151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 558251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 558351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 558451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 558551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 5586120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 558713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 558851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5589dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 559051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 55919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 55929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 55939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 55949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 55959db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 55969db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 55979db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 55989db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 55999db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 56009db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 56019db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 56029db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 56039db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56049db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56059db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 56069db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 56079db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 56089db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 56099db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 56109db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 56119db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 56129db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 56139db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 56149db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 56159db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56169db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56179db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 56189db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 56199db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 56209db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 56219db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 56229db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 5623dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Record->getDecl()->getLocation(), 56249db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 56259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 56269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 56279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 56289db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 56299db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 563051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 563151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 563213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, 563313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 563451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5635dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 563651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 563751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 5638120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 5639120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 5640e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor if (Ovl != OR_Deleted) { 5641e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 5642e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor << true << DestType << ArgsRange; 564351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 5644e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor break; 564551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5646e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor 5647e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // If this is a defaulted or implicitly-declared function, then 5648e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // it was implicitly deleted. Make it clear that the deletion was 5649e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // implicit. 56506c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith if (S.isImplicitlyDeleted(Best->Function)) 5651e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_special_init) 56526c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith << S.getSpecialMember(cast<CXXMethodDecl>(Best->Function)) 5653e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor << DestType << ArgsRange; 56546c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith else 56556c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 56566c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith << true << DestType << ArgsRange; 56576c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith 56586c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 565951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 566051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5661dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 566251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 566351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 566451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 566551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 56669fdefb338ead088dd7a5dd4ff3df807586b26d41David Blaikie break; 5667dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 566899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 56699db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 56709db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 56719db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 56729db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 56739db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 56749db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 56759db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 56769db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56779db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56789db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 56799db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 56809db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 56819db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 56829db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 56839db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 56849db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 56859db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 568699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 5687dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 56888713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_Incomplete: 56898713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl S.RequireCompleteType(Kind.getLocation(), DestType, 56908713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl diag::err_init_incomplete_type); 56918713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 56928713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 569314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl case FK_ListInitializationFailed: { 569414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Run the init list checker again to emit diagnostics. 569514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 569614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType DestType = Entity.getType(); 569714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker DiagnoseInitList(S, Entity, InitList, 5698c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/false, 5699168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 57004e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 570114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(DiagnoseInitList.HadError() && 570214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Inconsistent init list check result."); 570314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl break; 570414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 57055acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 57065acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: { 57075acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: Already diagnosed! 57085acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 57095acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 57102b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 57112b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: { 57122b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Try to perform all copies again. 57132b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 57142b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl unsigned NumInits = InitList->getNumInits(); 57152b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType DestType = Entity.getType(); 57162b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 57172b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl bool Success = S.isStdInitializerList(DestType, &E); 57182b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl (void)Success; 57192b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(Success && "Where did the std::initializer_list go?"); 57202b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 57212b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 57222b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 57232b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl NumInits), 57242b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 57252b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element = InitializedEntity::InitializeElement(S.Context, 57262b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 57272b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Show at most 3 errors. Otherwise, you'd get a lot of errors for errors 57282b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // where the init list type is wrong, e.g. 57292b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // std::initializer_list<void*> list = { 1, 2, 3, 4, 5, 6, 7, 8 }; 57302b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // FIXME: Emit a note if we hit the limit? 57312b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl int ErrorCount = 0; 57322b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl for (unsigned i = 0; i < NumInits && ErrorCount < 3; ++i) { 57332b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 57342b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Init = S.Owned(InitList->getInit(i)); 57352b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl if (S.PerformCopyInitialization(Element, Init.get()->getExprLoc(), Init) 57362b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl .isInvalid()) 57372b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ++ErrorCount; 57382b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 57392b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 57402b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 574170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 574270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: { 574370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl S.Diag(Kind.getLocation(), diag::err_selected_explicit_constructor) 574470e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl << Args[0]->getSourceRange(); 574570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OverloadCandidateSet::iterator Best; 574670e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OverloadingResult Ovl 574770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 574870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl assert(Ovl == OR_Success && "Inconsistent overload resolution"); 574970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 575070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl S.Diag(CtorDecl->getLocation(), diag::note_constructor_declared_here); 575170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl break; 575270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl } 575320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5754dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5755a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 575620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 575720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 575818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 57595f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid InitializationSequence::dump(raw_ostream &OS) const { 5760de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 5761de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 5762de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 5763de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 5764de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 5765de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 5766de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5767dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5768de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 5769de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 5770de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5771dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5772de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 5773de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 5774de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5775dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5776cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5777cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array type mismatch"; 5778cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5779cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5780cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5781cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "non-constant array initializer"; 5782cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5783cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5784de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 5785de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 5786de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5787dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5788de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 5789de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 5790de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5791dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5792de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 5793de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 5794de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5795dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5796de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5797de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 5798de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5799dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5800de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 5801de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 5802de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5803dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5804de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 5805de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 5806de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5807dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5808de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 5809de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 5810de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5811dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5812de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 5813de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 5814de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5815dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5816429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5817429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley OS << "conversion from property failed"; 5818429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5819429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5820de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 5821de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 5822de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5823dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5824de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 5825de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 5826de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5827dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5828de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 5829de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 5830de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5831dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5832de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 5833de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 5834de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5835dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5836de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 5837de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 5838de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5839dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5840de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 5841de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 5842de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5843dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 584472a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 584572a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor OS << "initialization of incomplete type"; 584672a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 58478713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 58488713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 584914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl OS << "list initialization checker failure"; 58505acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 58515acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 585273076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 585373076431605556fdbf28d287d084a73a24a8b8d4John McCall OS << "variable length array has an initializer"; 585473076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 585573076431605556fdbf28d287d084a73a24a8b8d4John McCall 58565acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 58575acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall OS << "initializer expression isn't contextually valid"; 58585acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 5859b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky 5860b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky case FK_ListConstructorOverloadFailed: 5861b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky OS << "list constructor overloading failed"; 5862b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky break; 58632b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 58642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: 58652b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl OS << "copy construction of initializer list element failed"; 58662b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 586770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 586870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: 586970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OS << "list copy initialization chose explicit constructor"; 587070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl break; 5871dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 5872de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 5873de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5874de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5875dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5876de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 58777491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Dependent sequence\n"; 5878de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5879dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 58807491c499e826682e128a400038361ebcbde30eecSebastian Redl case NormalSequence: 58817491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Normal sequence: "; 5882de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5883de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5884dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5885de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 5886de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 5887de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 5888de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5889dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5890de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 5891de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 5892de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 5893de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5894dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5895de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 5896de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 5897de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5898dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5899906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 5900906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "derived-to-base case (xvalue" << S->Type.getAsString() << ")"; 5901906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 5902dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5903de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 5904de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 5905de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5906dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5907de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 5908de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 5909de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5910dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5911de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 5912de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 5913de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5914dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5915523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 5916523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 5917523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 5918523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 5919de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 5920b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << "user-defined conversion via " << *S->Function.Function; 5921de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5922906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5923de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 5924de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 592513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5926de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 5927906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5928906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "qualification conversion (xvalue)"; 592913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5930906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5931de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 5932de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 5933de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5934dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5935de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 5936de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 5937de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 5938de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 5939de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5940dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5941de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 59428713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list aggregate initialization"; 59438713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 59448713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 59458713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 59468713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list initialization via constructor"; 5947de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5948dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 594913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 595013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "unwrap reference initializer list"; 595113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 595213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 595313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 595413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "rewrap reference initializer list"; 595513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 595613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 5957de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 5958de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 5959de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5960dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5961de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 5962de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 5963de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5964dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5965de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 5966de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 5967de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5968dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5969de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 5970de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 5971de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5972569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 5973569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 5974569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor OS << "Objective-C object conversion"; 5975569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 5976cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5977cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 5978cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array initialization"; 5979cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5980f85e193739c953358c865005855253af4f68a497John McCall 59810f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 59820f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith OS << "parenthesized array initialization"; 59830f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith break; 59840f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 5985f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 5986f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect copy and restore"; 5987f85e193739c953358c865005855253af4f68a497John McCall break; 5988f85e193739c953358c865005855253af4f68a497John McCall 5989f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 5990f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect restore"; 5991f85e193739c953358c865005855253af4f68a497John McCall break; 5992f85e193739c953358c865005855253af4f68a497John McCall 5993f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 5994f85e193739c953358c865005855253af4f68a497John McCall OS << "Objective-C object retension"; 5995f85e193739c953358c865005855253af4f68a497John McCall break; 59962b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 59972b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: 59982b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl OS << "std::initializer_list from initializer list"; 59992b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 6000de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 6001de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 6002de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 6003de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 6004de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 6005de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 6006de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 6007de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 60084c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smithstatic void DiagnoseNarrowingInInitList(Sema &S, InitializationSequence &Seq, 60094c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith QualType EntityType, 60104c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const Expr *PreInit, 60114c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const Expr *PostInit) { 60124c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (Seq.step_begin() == Seq.step_end() || PreInit->isValueDependent()) 60134c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60144c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60154c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A narrowing conversion can only appear as the final implicit conversion in 60164c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // an initialization sequence. 60174c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const InitializationSequence::Step &LastStep = Seq.step_end()[-1]; 60184c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (LastStep.Kind != InitializationSequence::SK_ConversionSequence) 60194c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60204c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60214c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const ImplicitConversionSequence &ICS = *LastStep.ICS; 60224c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const StandardConversionSequence *SCS = 0; 60234c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith switch (ICS.getKind()) { 60244c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::StandardConversion: 60254c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SCS = &ICS.Standard; 60264c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60274c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::UserDefinedConversion: 60284c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SCS = &ICS.UserDefined.After; 60294c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60304c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::AmbiguousConversion: 60314c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::EllipsisConversion: 60324c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::BadConversion: 60334c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60344c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith } 60354c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60364c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // Determine the type prior to the narrowing conversion. If a conversion 60374c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // operator was used, this may be different from both the type of the entity 60384c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // and of the pre-initialization expression. 60394c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith QualType PreNarrowingType = PreInit->getType(); 60404c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (Seq.step_begin() + 1 != Seq.step_end()) 60414c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith PreNarrowingType = Seq.step_end()[-2].Type; 60424c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60434c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // C++11 [dcl.init.list]p7: Check whether this is a narrowing conversion. 60444c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith APValue ConstantValue; 6045f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith QualType ConstantType; 6046f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith switch (SCS->getNarrowingKind(S.Context, PostInit, ConstantValue, 6047f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith ConstantType)) { 60484c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Not_Narrowing: 60494c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // No narrowing occurred. 60504c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60514c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60524c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Type_Narrowing: 60534c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // This was a floating-to-integer conversion, which is always considered a 60544c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // narrowing conversion even if the value is a constant and can be 60554c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // represented exactly as an integer. 60564c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 60574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6058f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_type_narrowing 6059f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6060f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_type_narrowing_sfinae 6061f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_type_narrowing) 60624c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 60634c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PreNarrowingType.getLocalUnqualifiedType() 60644c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << EntityType.getLocalUnqualifiedType(); 60654c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60664c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60674c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Constant_Narrowing: 60684c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A constant value was narrowed. 60694c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 60704e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6071f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_constant_narrowing 6072f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6073f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_constant_narrowing_sfinae 6074f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_constant_narrowing) 60754c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 6076f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith << ConstantValue.getAsString(S.getASTContext(), ConstantType) 60779906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 60784c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60794c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60804c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Variable_Narrowing: 60814c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A variable's value may have been narrowed. 60824c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 60834e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6084f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_variable_narrowing 6085f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6086f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_variable_narrowing_sfinae 6087f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_variable_narrowing) 60884c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 60894c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PreNarrowingType.getLocalUnqualifiedType() 60909906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 60914c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60924c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith } 6093191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 6094f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> StaticCast; 6095191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::raw_svector_ostream OS(StaticCast); 6096191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << "static_cast<"; 6097191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (const TypedefType *TT = EntityType->getAs<TypedefType>()) { 6098191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // It's important to use the typedef's name if there is one so that the 6099191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // fixit doesn't break code using types like int64_t. 6100191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // 6101191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // FIXME: This will break if the typedef requires qualification. But 6102191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // getQualifiedNameAsString() includes non-machine-parsable components. 6103b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << *TT->getDecl(); 6104191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else if (const BuiltinType *BT = EntityType->getAs<BuiltinType>()) 61054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie OS << BT->getName(S.getLangOpts()); 6106191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin else { 6107191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Oops, we didn't find the actual type of the variable. Don't emit a fixit 6108191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // with a broken cast. 6109191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return; 6110191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 6111191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << ">("; 61124c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), diag::note_init_list_narrowing_override) 61134c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61144c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << FixItHint::CreateInsertion(PostInit->getLocStart(), OS.str()) 6115191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << FixItHint::CreateInsertion( 61164c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.getPreprocessor().getLocForEndOfToken(PostInit->getLocEnd()), ")"); 6117191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin} 6118191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 611918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 612018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 612118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 61222be7e90b81509204b99b7bbf9753ad17b894a12aSean Huntbool 61232be7e90b81509204b99b7bbf9753ad17b894a12aSean HuntSema::CanPerformCopyInitialization(const InitializedEntity &Entity, 61242be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt ExprResult Init) { 61252be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt if (Init.isInvalid()) 61262be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt return false; 61272be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 61282be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt Expr *InitE = Init.get(); 61292be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt assert(InitE && "No initialization expression"); 61302be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 61312be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationKind Kind = InitializationKind::CreateCopy(SourceLocation(), 61322be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt SourceLocation()); 61332be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 6134383616cd2e61131a534afd9364ef53f643e1f834Sebastian Redl return !Seq.Failed(); 61352be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt} 61362be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 6137dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 613818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 613918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 6140191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ExprResult Init, 6141ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool TopLevelOfInitList, 6142ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicit) { 614318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 614418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 614518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 614615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall Expr *InitE = Init.get(); 614718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 614818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 614918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 615018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 615118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 615218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 6153ed878af7914df535b32d64f555fa118413186672Douglas Gregor EqualLoc, 6154ed878af7914df535b32d64f555fa118413186672Douglas Gregor AllowExplicit); 615518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 615618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 6157191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 61584c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith ExprResult Result = Seq.Perform(*this, Entity, Kind, MultiExprArg(&InitE, 1)); 61594c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61604c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (!Result.isInvalid() && TopLevelOfInitList) 61614c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith DiagnoseNarrowingInInitList(*this, Seq, Entity.getType(), 61624c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith InitE, Result.get()); 61634c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61644c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return Result; 616518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 6166