SemaInit.cpp revision 3d5cf5e0483f538c27016ef3e064536058d5605e
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. 9565263b4ec184212155c92740ab0bd363bb85c49eBenjamin Kramer llvm::APInt ConstVal(32, StrLength); 96dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // Return a new array type (C99 6.7.8p22). 9746a617a792bfab0d9b1e057371ea3b9540802226John McCall DeclT = S.Context.getConstantArrayType(IAT->getElementType(), 9846a617a792bfab0d9b1e057371ea3b9540802226John McCall ConstVal, 9946a617a792bfab0d9b1e057371ea3b9540802226John McCall ArrayType::Normal, 0); 10019da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner return; 101dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner } 1021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1038718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman const ConstantArrayType *CAT = cast<ConstantArrayType>(AT); 1041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 105bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // We have an array of character type with known size. However, 1068718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // the size may be smaller or larger than the string we are initializing. 1078718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // FIXME: Avoid truncation for 64-bit length strings. 1084e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus) { 109b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (StringLiteral *SL = dyn_cast<StringLiteral>(Str)) { 110b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // For Pascal strings it's OK to strip off the terminating null character, 111b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // so the example below is valid: 112b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // 113b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // unsigned char a[2] = "\pa"; 114b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (SL->isPascal()) 115b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson StrLength--; 116b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson } 117b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson 118bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // [dcl.init.string]p2 119bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength > CAT->getSize().getZExtValue()) 12096a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar S.Diag(Str->getLocStart(), 121bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::err_initializer_string_for_char_array_too_long) 122bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 123bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } else { 124bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // C99 6.7.8p14. 125bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength-1 > CAT->getSize().getZExtValue()) 12696a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar S.Diag(Str->getLocStart(), 127bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::warn_initializer_string_for_char_array_too_long) 128bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 129bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } 1301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1318718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // Set the type to the actual size that we are initializing. If we have 1328718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // something like: 1338718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // char x[1] = "foo"; 1348718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // then this will set the string literal's type to char[1]. 1358718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman Str->setType(DeclT); 136dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 137dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 138dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 139dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Semantic checking for initializer lists. 140dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 141dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 1429e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// @brief Semantic checking for initializer lists. 1439e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1449e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// The InitListChecker class contains a set of routines that each 1459e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// handle the initialization of a certain kind of entity, e.g., 1469e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// arrays, vectors, struct/union types, scalars, etc. The 1479e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// InitListChecker itself performs a recursive walk of the subobject 1489e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure of the type to be initialized, while stepping through 1499e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// the initializer list one element at a time. The IList and Index 1509e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// parameters to each of the Check* routines contain the active 1519e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// (syntactic) initializer list and the index into that initializer 1529e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list that represents the current initializer. Each routine is 1539e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// responsible for moving that Index forward as it consumes elements. 1549e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1559e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// Each Check* routine also has a StructuredList/StructuredIndex 15663e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// arguments, which contains the current "structured" (semantic) 1579e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initializer list and the index into that initializer list where we 1589e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// are copying initializers as we map them over to the semantic 1599e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. Once we have completed our recursive walk of the subobject 1609e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure, we will have constructed a full semantic initializer 1619e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. 1629e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1639e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// C99 designators cause changes in the initializer list traversal, 1649e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// because they make the initialization "jump" into a specific 1659e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// subobject and then continue the initialization from that 1669e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// point. CheckDesignatedInitializer() recursively steps into the 1679e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// designated subobject and manages backing out the recursion to 1689e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initialize the subobjects after the one designated. 1698b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattnernamespace { 170c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorclass InitListChecker { 1710820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner Sema &SemaRef; 172c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool hadError; 17314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool VerifyOnly; // no diagnostics, no structure building 174c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool AllowBraceElision; 175a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer llvm::DenseMap<InitListExpr *, InitListExpr *> SyntacticToSemantic; 176c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *FullyStructuredList; 1771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1788ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckImplicitInitList(const InitializedEntity &Entity, 179987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, QualType T, 1809e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 181629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman unsigned &StructuredIndex); 1828ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckExplicitInitList(const InitializedEntity &Entity, 18346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 1849e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 185eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 186eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1878ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckListElementTypes(const InitializedEntity &Entity, 18846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &DeclType, 1891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 190c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1919e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 192eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 193eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1948ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckSubElementType(const InitializedEntity &Entity, 19546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType ElemType, 196c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1979e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1989e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1990c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman void CheckComplexType(const InitializedEntity &Entity, 2000c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 2010c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 2020c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 2030c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex); 2048ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckScalarType(const InitializedEntity &Entity, 20546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 206c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 2079e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2089e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckReferenceType(const InitializedEntity &Entity, 2108ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 211930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 212930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 213930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex); 2148ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckVectorType(const InitializedEntity &Entity, 21546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, unsigned &Index, 2169e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2179e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2188ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckStructUnionTypes(const InitializedEntity &Entity, 2192bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, QualType DeclType, 2201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator Field, 221c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2229e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 223eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 224eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 2258ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckArrayType(const InitializedEntity &Entity, 226784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 2271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::APSInt elementIndex, 228c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2299e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2309e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2318ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson bool CheckDesignatedInitializer(const InitializedEntity &Entity, 2329a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, DesignatedInitExpr *DIE, 233711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 2341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &CurrentObjectType, 235c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor RecordDecl::field_iterator *NextField, 236c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor llvm::APSInt *NextElementIndex, 237c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 238c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 239c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &StructuredIndex, 240eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 241eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject); 242c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 243c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor QualType CurrentObjectType, 244c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 245c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned StructuredIndex, 246c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor SourceRange InitRange); 2479e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor void UpdateStructuredListElement(InitListExpr *StructuredList, 2489e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex, 249c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor Expr *expr); 250c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numArrayElements(QualType DeclType); 251c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numStructUnionElements(QualType DeclType); 252930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 253d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor void FillInValueInitForField(unsigned Init, FieldDecl *Field, 254d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 255d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 256cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor void FillInValueInitializations(const InitializedEntity &Entity, 257cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 258f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool CheckFlexibleArrayInit(const InitializedEntity &Entity, 259f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, FieldDecl *Field, 260f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject); 2613ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl void CheckValueInitializable(const InitializedEntity &Entity); 2623ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 263c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorpublic: 264cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker(Sema &S, const InitializedEntity &Entity, 265c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl InitListExpr *IL, QualType &T, bool VerifyOnly, 266c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool AllowBraceElision); 267c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool HadError() { return hadError; } 268c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 269c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // @brief Retrieves the fully-structured initializer list used for 270c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // semantic analysis and code generation. 271c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getFullyStructuredList() const { return FullyStructuredList; } 272c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor}; 2738b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattner} // end anonymous namespace 27468355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 2753ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redlvoid InitListChecker::CheckValueInitializable(const InitializedEntity &Entity) { 2763ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl assert(VerifyOnly && 2773ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl "CheckValueInitializable is only inteded for verification mode."); 2783ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 2793ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SourceLocation Loc; 2803ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 2813ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl true); 2823ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializationSequence InitSeq(SemaRef, Entity, Kind, 0, 0); 2833ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (InitSeq.Failed()) 2843ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 2853ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl} 2863ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 287d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregorvoid InitListChecker::FillInValueInitForField(unsigned Init, FieldDecl *Field, 288d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 289dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitListExpr *ILE, 290d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor bool &RequiresSecondPass) { 29196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = ILE->getLocStart(); 292d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned NumInits = ILE->getNumInits(); 293dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity MemberEntity 294d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = InitializedEntity::InitializeMember(Field, &ParentEntity); 295d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 296d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // FIXME: We probably don't need to handle references 297d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // specially here, since value-initialization of references is 298d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // handled in InitializationSequence. 299d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->getType()->isReferenceType()) { 300d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // C++ [dcl.init.aggr]p9: 301d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // If an incomplete or empty initializer-list leaves a 302d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // member of reference type uninitialized, the program is 303d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // ill-formed. 304d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Loc, diag::err_init_reference_member_uninitialized) 305d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << Field->getType() 306d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << ILE->getSyntacticForm()->getSourceRange(); 307d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Field->getLocation(), 308d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor diag::note_uninit_reference_member); 309d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 310d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 311d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 312dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 313d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 314d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor true); 315d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationSequence InitSeq(SemaRef, MemberEntity, Kind, 0, 0); 316d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (!InitSeq) { 317d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitSeq.Diagnose(SemaRef, MemberEntity, Kind, 0, 0); 318d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 319d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 320d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 321dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 32260d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult MemberInit 323f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, MemberEntity, Kind, MultiExprArg()); 324d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (MemberInit.isInvalid()) { 325d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 326d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 327d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 328dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 329d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) { 330d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Do nothing 331d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (Init < NumInits) { 332d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->setInit(Init, MemberInit.takeAs<Expr>()); 3337491c499e826682e128a400038361ebcbde30eecSebastian Redl } else if (InitSeq.isConstructorInitialization()) { 334d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Value-initialization requires a constructor call, so 335d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // extend the initializer list to include the constructor 336d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // call and make a note that we'll need to take another pass 337d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // through the initializer list. 338709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek ILE->updateInit(SemaRef.Context, Init, MemberInit.takeAs<Expr>()); 339d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor RequiresSecondPass = true; 340d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 341d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitListExpr *InnerILE 342d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 343dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(MemberEntity, InnerILE, 344dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi RequiresSecondPass); 345d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor} 346d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 3474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Recursively replaces NULL values within the given initializer list 3484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// with expressions that perform value-initialization of the 3494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// appropriate type. 350dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 351cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::FillInValueInitializations(const InitializedEntity &Entity, 352cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, 353cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool &RequiresSecondPass) { 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((ILE->getType() != SemaRef.Context.VoidTy) && 355930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor "Should not have void type"); 35696a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = ILE->getLocStart(); 35787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (ILE->getSyntacticForm()) 35896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar Loc = ILE->getSyntacticForm()->getLocStart(); 3591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3606217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) { 361d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion() && 362d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->getInitializedFieldInUnion()) 363d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(0, ILE->getInitializedFieldInUnion(), 364d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Entity, ILE, RequiresSecondPass); 365d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor else { 366d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned Init = 0; 367d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor for (RecordDecl::field_iterator 368d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field = RType->getDecl()->field_begin(), 369d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FieldEnd = RType->getDecl()->field_end(); 370d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field != FieldEnd; ++Field) { 371d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->isUnnamedBitfield()) 372d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor continue; 373d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 374d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 37587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 37687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 377581deb3da481053c4993c7600f97acf7768caac5David Blaikie FillInValueInitForField(Init, *Field, Entity, ILE, RequiresSecondPass); 378d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 379cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 380cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 381d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ++Init; 382d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 383d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Only look at the first initialization of a union. 384d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion()) 385d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor break; 386d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 3874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 3884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType ElementType; 3931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 394cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializedEntity ElementEntity = Entity; 39587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumInits = ILE->getNumInits(); 39687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumElements = NumInits; 3970820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (const ArrayType *AType = SemaRef.Context.getAsArrayType(ILE->getType())) { 3984c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = AType->getElementType(); 39987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) 40087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = CAType->getSize().getZExtValue(); 401dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 402cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 403183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = ILE->getType()->getAs<VectorType>()) { 4044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = VType->getElementType(); 40587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = VType->getNumElements(); 406dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 407cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 4081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else 4094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = ILE->getType(); 4101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 411dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 41287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor for (unsigned Init = 0; Init != NumElements; ++Init) { 41316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (hadError) 41416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return; 41516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor 416d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement || 417d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson ElementEntity.getKind() == InitializedEntity::EK_VectorElement) 418cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity.setElementIndex(Init); 419cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 42021f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis Expr *InitExpr = (Init < NumInits ? ILE->getInit(Init) : 0); 42121f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis if (!InitExpr && !ILE->hasArrayFiller()) { 422cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 423cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor true); 424cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationSequence InitSeq(SemaRef, ElementEntity, Kind, 0, 0); 425cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!InitSeq) { 426cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitSeq.Diagnose(SemaRef, ElementEntity, Kind, 0, 0); 42787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor hadError = true; 42887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 42987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 43087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 43160d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult ElementInit 432f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, ElementEntity, Kind, MultiExprArg()); 433cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (ElementInit.isInvalid()) { 43416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor hadError = true; 435cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 436cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 437cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 438cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (hadError) { 439cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // Do nothing 440cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } else if (Init < NumInits) { 4413e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4423e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // of the "holes" in the array. 4433e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) 4443e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4453e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis else 4463e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setInit(Init, ElementInit.takeAs<Expr>()); 4474423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } else { 4484423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4494423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // of the rest of elements and exit. 4504423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) { 4514423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4524423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis return; 4534423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 4544423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis 4557491c499e826682e128a400038361ebcbde30eecSebastian Redl if (InitSeq.isConstructorInitialization()) { 4564423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // Value-initialization requires a constructor call, so 4574423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // extend the initializer list to include the constructor 4584423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // call and make a note that we'll need to take another pass 4594423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // through the initializer list. 4604423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->updateInit(SemaRef.Context, Init, ElementInit.takeAs<Expr>()); 4614423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis RequiresSecondPass = true; 4624423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 463cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 464ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else if (InitListExpr *InnerILE 46521f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis = dyn_cast_or_null<InitListExpr>(InitExpr)) 466cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(ElementEntity, InnerILE, RequiresSecondPass); 4674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 4684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 4694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 47068355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 471cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::InitListChecker(Sema &S, const InitializedEntity &Entity, 47214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *IL, QualType &T, 473c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool VerifyOnly, bool AllowBraceElision) 474b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith : SemaRef(S), VerifyOnly(VerifyOnly), AllowBraceElision(AllowBraceElision) { 4750cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff hadError = false; 476c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 477b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman unsigned newIndex = 0; 4784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 4791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FullyStructuredList 480ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor = getStructuredSubobjectInit(IL, newIndex, T, 0, 0, IL->getSourceRange()); 481dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckExplicitInitList(Entity, IL, T, newIndex, 48246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson FullyStructuredList, newStructuredIndex, 483eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor /*TopLevelObject=*/true); 484c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 48514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && !VerifyOnly) { 486cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool RequiresSecondPass = false; 487cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(Entity, FullyStructuredList, RequiresSecondPass); 48816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (RequiresSecondPass && !hadError) 489dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(Entity, FullyStructuredList, 490cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor RequiresSecondPass); 491cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 4920cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4940cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numArrayElements(QualType DeclType) { 495638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // FIXME: use a proper constant 496638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman int maxElements = 0x7FFFFFFF; 497c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const ConstantArrayType *CAT = 4980820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 4990cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = static_cast<int>(CAT->getSize().getZExtValue()); 5000cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 5010cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return maxElements; 5020cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5030cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5040cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numStructUnionElements(QualType DeclType) { 5056217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *structDecl = DeclType->getAs<RecordType>()->getDecl(); 5064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor int InitializableMembers = 0; 5071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (RecordDecl::field_iterator 50817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = structDecl->field_begin(), 50917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = structDecl->field_end(); 5104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Field != FieldEnd; ++Field) { 511d61db33331c264d6361283602b248a7423040597Douglas Gregor if (!Field->isUnnamedBitfield()) 5124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++InitializableMembers; 5134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 51439ba4aeca296b1c9f04bde7d9d3cbbf129f1abd3Argyrios Kyrtzidis if (structDecl->isUnion()) 515f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return std::min(InitializableMembers, 1); 516f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return InitializableMembers - structDecl->hasFlexibleArrayMember(); 5170cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5180cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5198ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckImplicitInitList(const InitializedEntity &Entity, 520987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, 5214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType T, unsigned &Index, 5224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 523629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman unsigned &StructuredIndex) { 5240cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff int maxElements = 0; 5251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (T->isArrayType()) 5270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numArrayElements(T); 528fb87b89fc9eb103e19fb8e4b925c23f0bd091b99Douglas Gregor else if (T->isRecordType()) 5290cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numStructUnionElements(T); 530b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman else if (T->isVectorType()) 531183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall maxElements = T->getAs<VectorType>()->getNumElements(); 5320cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff else 533b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("CheckImplicitInitList(): Illegal type"); 534b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 535402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman if (maxElements == 0) { 53614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 53714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(ParentIList->getInit(Index)->getLocStart(), 53814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_implicit_empty_initializer); 5394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 540402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman hadError = true; 541402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman return; 542402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman } 543402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman 5444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Build a structured initializer list corresponding to this subobject. 5454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredSubobjectInitList 5461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = getStructuredSubobjectInit(ParentIList, Index, T, StructuredList, 5471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredIndex, 54896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceRange(ParentIList->getInit(Index)->getLocStart(), 549ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor ParentIList->getSourceRange().getEnd())); 5504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredSubobjectInitIndex = 0; 5514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 5524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Check the element types and build the structural subobject. 55387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned StartIndex = Index; 554dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, ParentIList, T, 555987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 5561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredSubobjectInitList, 557629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman StructuredSubobjectInitIndex); 558c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl 559c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (VerifyOnly) { 560c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (!AllowBraceElision && (T->isArrayType() || T->isRecordType())) 561c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl hadError = true; 562c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl } else { 56314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->setType(T); 56414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 565c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl unsigned EndIndex = (Index == StartIndex? StartIndex : Index - 1); 56614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the structured sub-object initializer so that it's ending 56714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // range corresponds with the end of the last initializer it used. 56814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (EndIndex < ParentIList->getNumInits()) { 56914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceLocation EndLoc 57014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = ParentIList->getInit(EndIndex)->getSourceRange().getEnd(); 57114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->setRBraceLoc(EndLoc); 57214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 57314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 574c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl // Complain about missing braces. 57514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (T->isArrayType() || T->isRecordType()) { 57614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(StructuredSubobjectInitList->getLocStart(), 577c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl AllowBraceElision ? diag::warn_missing_braces : 578c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl diag::err_missing_braces) 57914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << StructuredSubobjectInitList->getSourceRange() 58014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << FixItHint::CreateInsertion( 58114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->getLocStart(), "{") 58214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << FixItHint::CreateInsertion( 58314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PP.getLocForEndOfToken( 584dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi StructuredSubobjectInitList->getLocEnd()), 58514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "}"); 586c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (!AllowBraceElision) 587c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl hadError = true; 58814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 5891e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner } 5900cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5910cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5928ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckExplicitInitList(const InitializedEntity &Entity, 59346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 5944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 596eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 597eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 598c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman assert(IList->isExplicit() && "Illegal Implicit InitListExpr"); 59914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 60014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SyntacticToSemantic[IList] = StructuredList; 60114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setSyntacticForm(IList); 60214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 603dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, IList, T, /*SubobjectIsDesignatorContext=*/true, 60446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson Index, StructuredList, StructuredIndex, TopLevelObject); 60514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 6065c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman QualType ExprTy = T; 6075c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman if (!ExprTy->isArrayType()) 6085c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman ExprTy = ExprTy.getNonLValueExprType(SemaRef.Context); 60914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setType(ExprTy); 61014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setType(ExprTy); 61114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 612638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (hadError) 613638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 614c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 615638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (Index < IList->getNumInits()) { 616c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman // We have leftover initializers 61714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 6184e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus || 6194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie (SemaRef.getLangOpts().OpenCL && 62014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getType()->isVectorType())) { 62114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 62214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 62314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 62414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 62514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 626e540858b289b23653bcb23646f135729203635cbEli Friedman if (StructuredIndex == 1 && 627e540858b289b23653bcb23646f135729203635cbEli Friedman IsStringInit(StructuredList->getInit(0), T, SemaRef.Context)) { 6287c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers_in_char_array_initializer; 6294e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus) { 6307c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor DK = diag::err_excess_initializers_in_char_array_initializer; 631e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 632e540858b289b23653bcb23646f135729203635cbEli Friedman } 633bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman // Special-case 6340820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 635dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getInit(Index)->getSourceRange(); 636d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman } else if (!T->isIncompleteType()) { 637b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // Don't complain for incomplete types, since we'll get an error 638b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // elsewhere 639eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType CurrentObjectType = StructuredList->getType(); 6401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int initKind = 641eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isArrayType()? 0 : 642eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isVectorType()? 1 : 643eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isScalarType()? 2 : 644eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isUnionType()? 3 : 645eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 4; 6467c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 6477c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers; 6484e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus) { 649e540858b289b23653bcb23646f135729203635cbEli Friedman DK = diag::err_excess_initializers; 6500863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman hadError = true; 6510863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman } 6524e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().OpenCL && initKind == 1) { 6530863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman DK = diag::err_excess_initializers; 654e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 655e540858b289b23653bcb23646f135729203635cbEli Friedman } 6567c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 6570820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 658eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << initKind << IList->getInit(Index)->getSourceRange(); 659c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 660c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 661cda25a977e4b7fe4e080b87586410eaeab7b62f6Eli Friedman 66214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && T->isScalarType() && IList->getNumInits() == 1 && 66314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !TopLevelObject) 6640820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init) 665a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor << IList->getSourceRange() 666849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocStart()) 667849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocEnd()); 6680cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6708ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, 67146f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &DeclType, 67387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool SubobjectIsDesignatorContext, 6744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 676eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 677eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 6780c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (DeclType->isAnyComplexType() && SubobjectIsDesignatorContext) { 6790c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Explicitly braced initializer for complex type can be real+imaginary 6800c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // parts. 6810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckComplexType(Entity, IList, DeclType, Index, 6820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 6830c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (DeclType->isScalarType()) { 68446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, DeclType, Index, 68546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 686c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (DeclType->isVectorType()) { 687dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckVectorType(Entity, IList, DeclType, Index, 68846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 68920599392a99956eaac4cf351a0935574090cb6c3Richard Smith } else if (DeclType->isRecordType()) { 69020599392a99956eaac4cf351a0935574090cb6c3Richard Smith assert(DeclType->isAggregateType() && 69120599392a99956eaac4cf351a0935574090cb6c3Richard Smith "non-aggregate records should be handed in CheckSubElementType"); 69220599392a99956eaac4cf351a0935574090cb6c3Richard Smith RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 69320599392a99956eaac4cf351a0935574090cb6c3Richard Smith CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 69420599392a99956eaac4cf351a0935574090cb6c3Richard Smith SubobjectIsDesignatorContext, Index, 69520599392a99956eaac4cf351a0935574090cb6c3Richard Smith StructuredList, StructuredIndex, 69620599392a99956eaac4cf351a0935574090cb6c3Richard Smith TopLevelObject); 69720599392a99956eaac4cf351a0935574090cb6c3Richard Smith } else if (DeclType->isArrayType()) { 69820599392a99956eaac4cf351a0935574090cb6c3Richard Smith llvm::APSInt Zero( 69920599392a99956eaac4cf351a0935574090cb6c3Richard Smith SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 70020599392a99956eaac4cf351a0935574090cb6c3Richard Smith false); 70120599392a99956eaac4cf351a0935574090cb6c3Richard Smith CheckArrayType(Entity, IList, DeclType, Zero, 70220599392a99956eaac4cf351a0935574090cb6c3Richard Smith SubobjectIsDesignatorContext, Index, 70320599392a99956eaac4cf351a0935574090cb6c3Richard Smith StructuredList, StructuredIndex); 704613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 705613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 7064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 70714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 70814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 70914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 710d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 711930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 7128ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 7138ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 714c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (DeclType->isObjCObjectType()) { 71514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 71614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_objc_class) 71714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7184d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7190cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 72014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 72114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 72214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7234d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7240cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 7250cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 7260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 7278ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 72846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 7291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 7304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 7314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 7336fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 734c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 73520599392a99956eaac4cf351a0935574090cb6c3Richard Smith if (!ElemType->isRecordType() || ElemType->isAggregateType()) { 73620599392a99956eaac4cf351a0935574090cb6c3Richard Smith unsigned newIndex = 0; 73720599392a99956eaac4cf351a0935574090cb6c3Richard Smith unsigned newStructuredIndex = 0; 73820599392a99956eaac4cf351a0935574090cb6c3Richard Smith InitListExpr *newStructuredList 73920599392a99956eaac4cf351a0935574090cb6c3Richard Smith = getStructuredSubobjectInit(IList, Index, ElemType, 74020599392a99956eaac4cf351a0935574090cb6c3Richard Smith StructuredList, StructuredIndex, 74120599392a99956eaac4cf351a0935574090cb6c3Richard Smith SubInitList->getSourceRange()); 74220599392a99956eaac4cf351a0935574090cb6c3Richard Smith CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 74320599392a99956eaac4cf351a0935574090cb6c3Richard Smith newStructuredList, newStructuredIndex); 74420599392a99956eaac4cf351a0935574090cb6c3Richard Smith ++StructuredIndex; 74520599392a99956eaac4cf351a0935574090cb6c3Richard Smith ++Index; 74620599392a99956eaac4cf351a0935574090cb6c3Richard Smith return; 74720599392a99956eaac4cf351a0935574090cb6c3Richard Smith } 74820599392a99956eaac4cf351a0935574090cb6c3Richard Smith assert(SemaRef.getLangOpts().CPlusPlus && 74920599392a99956eaac4cf351a0935574090cb6c3Richard Smith "non-aggregate records are only possible in C++"); 75020599392a99956eaac4cf351a0935574090cb6c3Richard Smith // C++ initialization is handled later. 75120599392a99956eaac4cf351a0935574090cb6c3Richard Smith } 75220599392a99956eaac4cf351a0935574090cb6c3Richard Smith 75320599392a99956eaac4cf351a0935574090cb6c3Richard Smith if (ElemType->isScalarType()) { 754fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckScalarType(Entity, IList, ElemType, Index, 755fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 756930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 757fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckReferenceType(Entity, IList, ElemType, Index, 758fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 759fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 760930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 761fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (const ArrayType *arrayType = SemaRef.Context.getAsArrayType(ElemType)) { 762fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // arrayType can be incomplete if we're initializing a flexible 763fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // array member. There's nothing we can do with the completed 764fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // type here, though. 765930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 766fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Expr *Str = IsStringInit(expr, arrayType, SemaRef.Context)) { 7678a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman if (!VerifyOnly) { 7688a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, ElemType, arrayType, SemaRef); 7698a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 7708a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman } 771fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 772fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 773930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 774930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 775fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization. 776fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 7774e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (SemaRef.getLangOpts().CPlusPlus) { 778930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 779fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // All implicit type conversions (clause 4) are considered when 7805d3d41d0873d51b405972baf38e1f3a7ef5b49e0Sebastian Redl // initializing the aggregate member with an initializer from 781fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // an initializer-list. If the initializer can initialize a 782fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // member, the member is initialized. [...] 783fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 784fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // FIXME: Better EqualLoc? 785fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind Kind = 786fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 787fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 788fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 789fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Seq) { 79014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 791b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith ExprResult Result = 792b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Seq.Perform(SemaRef, Entity, Kind, MultiExprArg(&expr, 1)); 793b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith if (Result.isInvalid()) 794b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith hadError = true; 79514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 79614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 797b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Result.takeAs<Expr>()); 79814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 799fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 800fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 801fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 802fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 803fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 804fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 805fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C99 6.7.8p13: 8061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 807fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // The initializer for a structure or union object that has 808fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // automatic storage duration shall be either an initializer 809fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // list as described below, or a single expression that has 810fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // compatible structure or union type. In the latter case, the 811fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // initial value of the object, including unnamed members, is 812fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // that of the expression. 813429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult ExprRes = SemaRef.Owned(expr); 814fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if ((ElemType->isRecordType() || ElemType->isVectorType()) && 81514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.CheckSingleAssignmentConstraints(ElemType, ExprRes, 81614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !VerifyOnly) 817fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall == Sema::Compatible) { 818429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 819429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 820429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley else { 821429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes = SemaRef.DefaultFunctionArrayLvalueConversion(ExprRes.take()); 822429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 823429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 824429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 825429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley UpdateStructuredListElement(StructuredList, StructuredIndex, 826429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.takeAs<Expr>()); 827930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 828fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 829930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 830429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.release(); 831fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 832fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 833fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 834fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C++ [dcl.init.aggr]p12: 835fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // 836fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // [...] Otherwise, if the member is itself a non-empty 837fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // subaggregate, brace elision is assumed and the initializer is 838fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // considered for the initialization of the first member of 839fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // the subaggregate. 8404e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().OpenCL && 84161b4bc80e943578ae855810918a1dc9697dbd15bTanya Lattner (ElemType->isAggregateType() || ElemType->isVectorType())) { 842fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 843fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredIndex); 844fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 845fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 84614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 84714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // We cannot initialize this element, so let 84814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // PerformCopyInitialization produce the appropriate diagnostic. 84914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 85014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 85114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 85214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 853fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall hadError = true; 854fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 855fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 856930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 857b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 858b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 8590c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedmanvoid InitListChecker::CheckComplexType(const InitializedEntity &Entity, 8600c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 8610c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 8620c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 8630c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex) { 8640c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(Index == 0 && "Index in explicit init list must be zero"); 8650c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8660c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // As an extension, clang supports complex initializers, which initialize 8670c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number component-wise. When an explicit initializer list for 8680c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number contains two two initializers, this extension kicks in: 8690c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // it exepcts the initializer list to contain two elements convertible to 8700c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the element type of the complex type. The first element initializes 8710c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the real part, and the second element intitializes the imaginary part. 8720c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8730c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (IList->getNumInits() != 2) 8740c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman return CheckScalarType(Entity, IList, DeclType, Index, StructuredList, 8750c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredIndex); 8760c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8770c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // This is an extension in C. (The builtin _Complex type does not exist 8780c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // in the C++ standard.) 8794e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().CPlusPlus && !VerifyOnly) 8800c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman SemaRef.Diag(IList->getLocStart(), diag::ext_complex_component_init) 8810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman << IList->getSourceRange(); 8820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8830c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Initialize the complex number. 8840c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman QualType elementType = DeclType->getAs<ComplexType>()->getElementType(); 8850c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity ElementEntity = 8860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8870c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman for (unsigned i = 0; i < 2; ++i) { 8890c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman ElementEntity.setElementIndex(Index); 8900c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckSubElementType(ElementEntity, IList, elementType, Index, 8910c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 8920c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } 8930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman} 8940c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8968ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 89746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 8986fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 8994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 901b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Index >= IList->getNumInits()) { 9026b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith if (!VerifyOnly) 9036b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith SemaRef.Diag(IList->getLocStart(), 9044e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie SemaRef.getLangOpts().CPlusPlus0x ? 9056b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::warn_cxx98_compat_empty_scalar_initializer : 9066b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::err_empty_scalar_initializer) 9076b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith << IList->getSourceRange(); 9084e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie hadError = !SemaRef.getLangOpts().CPlusPlus0x; 9094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 9104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 911bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 9120cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 913b934c2d77144471f35c5ebae9e925b056dac8112John McCall 914b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *expr = IList->getInit(Index); 915b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { 91614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 91714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(SubIList->getLocStart(), 91814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::warn_many_braces_around_scalar_init) 91914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SubIList->getSourceRange(); 920b934c2d77144471f35c5ebae9e925b056dac8112John McCall 921b934c2d77144471f35c5ebae9e925b056dac8112John McCall CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, 922b934c2d77144471f35c5ebae9e925b056dac8112John McCall StructuredIndex); 923b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 924b934c2d77144471f35c5ebae9e925b056dac8112John McCall } else if (isa<DesignatedInitExpr>(expr)) { 92514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 92696a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(expr->getLocStart(), 92714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_for_scalar_init) 92814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << expr->getSourceRange(); 929b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; 930b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 931b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 932b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 933b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 934b934c2d77144471f35c5ebae9e925b056dac8112John McCall 93514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 93614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 93714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 93814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 93914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 94014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 94114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 942b934c2d77144471f35c5ebae9e925b056dac8112John McCall ExprResult Result = 943b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 944191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(expr), 945191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 946b934c2d77144471f35c5ebae9e925b056dac8112John McCall 947b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *ResultExpr = 0; 948b934c2d77144471f35c5ebae9e925b056dac8112John McCall 949b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Result.isInvalid()) 950b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; // types weren't compatible. 951b934c2d77144471f35c5ebae9e925b056dac8112John McCall else { 952b934c2d77144471f35c5ebae9e925b056dac8112John McCall ResultExpr = Result.takeAs<Expr>(); 953dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 954b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (ResultExpr != expr) { 955b934c2d77144471f35c5ebae9e925b056dac8112John McCall // The type was promoted, update initializer list. 956b934c2d77144471f35c5ebae9e925b056dac8112John McCall IList->setInit(Index, ResultExpr); 957b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 958b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 959b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (hadError) 960b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 961b934c2d77144471f35c5ebae9e925b056dac8112John McCall else 962b934c2d77144471f35c5ebae9e925b056dac8112John McCall UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 963b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 9640cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 9650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 9668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 9678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 968930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 969930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 970930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 97114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Index >= IList->getNumInits()) { 972390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 973390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 974390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 975390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 97614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 97714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), 97814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_init_reference_member_uninitialized) 97914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType 98014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IList->getSourceRange(); 981930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 982930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 983930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 984930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 985930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 98614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 98714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Expr *expr = IList->getInit(Index); 9884e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (isa<InitListExpr>(expr) && !SemaRef.getLangOpts().CPlusPlus0x) { 98914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 99014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 99114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << IList->getSourceRange(); 99214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 99314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 99414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 99514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 99614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 99714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 99814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 99914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 100014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 100114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 100214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 100314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 100414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 100514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ExprResult Result = 100614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 100714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 100814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 100914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Result.isInvalid()) 101114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 101214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl expr = Result.takeAs<Expr>(); 101414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setInit(Index, expr); 101514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (hadError) 101714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 101814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 101914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 102014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 1021930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 1022930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 10238ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 102446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 10254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 10264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 10274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 102820e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 102920e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned maxElements = VT->getNumElements(); 103020e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numEltsInit = 0; 103120e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType elementType = VT->getElementType(); 103220e047abc5f19dc948436c0fb891450d9cd40667John McCall 10333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Make sure the element type can be value-initialized. 10353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 10373ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity)); 10383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl return; 10393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 10403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 10414e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!SemaRef.getLangOpts().OpenCL) { 104220e047abc5f19dc948436c0fb891450d9cd40667John McCall // If the initializing element is a vector, try to copy-initialize 104320e047abc5f19dc948436c0fb891450d9cd40667John McCall // instead of breaking it apart (which is doomed to failure anyway). 104420e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *Init = IList->getInit(Index); 104520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!isa<InitListExpr>(Init) && Init->getType()->isVectorType()) { 104614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 104714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(Init))) 104814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 104914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 105014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 105114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 105214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 105320e047abc5f19dc948436c0fb891450d9cd40667John McCall ExprResult Result = 105420e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.PerformCopyInitialization(Entity, Init->getLocStart(), 1055191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(Init), 1056191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 105720e047abc5f19dc948436c0fb891450d9cd40667John McCall 105820e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *ResultExpr = 0; 105920e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Result.isInvalid()) 106020e047abc5f19dc948436c0fb891450d9cd40667John McCall hadError = true; // types weren't compatible. 106120e047abc5f19dc948436c0fb891450d9cd40667John McCall else { 106220e047abc5f19dc948436c0fb891450d9cd40667John McCall ResultExpr = Result.takeAs<Expr>(); 1063dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 106420e047abc5f19dc948436c0fb891450d9cd40667John McCall if (ResultExpr != Init) { 106520e047abc5f19dc948436c0fb891450d9cd40667John McCall // The type was promoted, update initializer list. 106620e047abc5f19dc948436c0fb891450d9cd40667John McCall IList->setInit(Index, ResultExpr); 10672ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 10682ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 106920e047abc5f19dc948436c0fb891450d9cd40667John McCall if (hadError) 107020e047abc5f19dc948436c0fb891450d9cd40667John McCall ++StructuredIndex; 107120e047abc5f19dc948436c0fb891450d9cd40667John McCall else 107214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 107314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ResultExpr); 107420e047abc5f19dc948436c0fb891450d9cd40667John McCall ++Index; 107520e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 10760cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 107820e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 107920e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1080dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 108120e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 108220e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 10833ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10843ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10853ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(ElementEntity); 108620e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 10873ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 1088dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 108920e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 109020e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 109120e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 109220e047abc5f19dc948436c0fb891450d9cd40667John McCall } 109320e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 109420e047abc5f19dc948436c0fb891450d9cd40667John McCall } 109520e047abc5f19dc948436c0fb891450d9cd40667John McCall 109620e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 109720e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1098dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 109920e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL initializers allows vectors to be constructed from vectors. 110020e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i) { 110120e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 110220e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 110320e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 1104dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 110520e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 110620e047abc5f19dc948436c0fb891450d9cd40667John McCall 110720e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType IType = IList->getInit(Index)->getType(); 110820e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!IType->isVectorType()) { 110920e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 111020e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 111120e047abc5f19dc948436c0fb891450d9cd40667John McCall ++numEltsInit; 111220e047abc5f19dc948436c0fb891450d9cd40667John McCall } else { 111320e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType VecType; 111420e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *IVT = IType->getAs<VectorType>(); 111520e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numIElts = IVT->getNumElements(); 1116dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 111720e047abc5f19dc948436c0fb891450d9cd40667John McCall if (IType->isExtVectorType()) 111820e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); 111920e047abc5f19dc948436c0fb891450d9cd40667John McCall else 112020e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getVectorType(elementType, numIElts, 1121e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson IVT->getVectorKind()); 112220e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, VecType, Index, 112320e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 112420e047abc5f19dc948436c0fb891450d9cd40667John McCall numEltsInit += numIElts; 112520e047abc5f19dc948436c0fb891450d9cd40667John McCall } 11260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 112720e047abc5f19dc948436c0fb891450d9cd40667John McCall 112820e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL requires all elements to be initialized. 11293ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (numEltsInit != maxElements) { 11303ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!VerifyOnly) 113196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(IList->getLocStart(), 11323ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl diag::err_vector_incorrect_num_initializers) 11333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl << (numEltsInit < maxElements) << maxElements << numEltsInit; 11343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 11353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 11360cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11370cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 11388ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 1139784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 114087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 11411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 11424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 11434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 11444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 1145ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = SemaRef.Context.getAsArrayType(DeclType); 1146ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 11470cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 11480cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 1149ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (Expr *Str = IsStringInit(IList->getInit(Index), arrayType, 115079e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 11514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 11524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 11534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 11544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 11554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 115614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 11578a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, DeclType, arrayType, SemaRef); 115814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 115914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 116014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 11610cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 11620cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 11630cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 11640cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1165ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(arrayType)) { 1166638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 1167638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 1168638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 116914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 117014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 117114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_variable_object_no_init) 117214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << VAT->getSizeExpr()->getSourceRange(); 1173638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 11744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 11754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 1176638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 1177638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 1178638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 117905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 11804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 11814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 118205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 1183ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(arrayType)) { 118405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 11859f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extOrTrunc(maxElements.getBitWidth()); 1186e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 118705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 118805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 118905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1190ce6c9b7da219c8640a0559f75770cfc6622de083John McCall QualType elementType = arrayType->getElementType(); 119105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 119205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 119305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 119487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 119587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 119687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 119787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 119887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 119987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 120087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 120187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 12029a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 12034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 1204eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 1205eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 120605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 120787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 120887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 120987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 1210f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 12119f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad maxElements = maxElements.extend(elementIndex.getBitWidth()); 1212f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 12139f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extend(maxElements.getBitWidth()); 1214e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 1215f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 121687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 121787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 121887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 121987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 122005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 122205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 122305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 122505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 122605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 12270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 122805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 12298ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 1230dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 12318ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 12328ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 12338ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 12348ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 123505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 123605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 123705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 123805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 123905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 124005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 12410cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 124214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && DeclType->isIncompleteArrayType() && !VerifyOnly) { 12430cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1244396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1245e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 124605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1247396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1248396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 12490820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1250396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 12510cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1252396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 12531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1254396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 12550cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 12563ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!hadError && VerifyOnly) { 12573ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check if there are any members of the array that get value-initialized. 12583ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // If so, check if doing that is possible. 12593ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: This needs to detect holes left by designated initializers too. 12603ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (maxElementsKnown && elementIndex < maxElements) 12613ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(InitializedEntity::InitializeElement( 12623ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SemaRef.Context, 0, Entity)); 12633ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 12640cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 12650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1266f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedmanbool InitListChecker::CheckFlexibleArrayInit(const InitializedEntity &Entity, 1267f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, 1268f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FieldDecl *Field, 1269f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject) { 1270f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Handle GNU flexible array initializers. 1271f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman unsigned FlexArrayDiag; 1272f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (isa<InitListExpr>(InitExpr) && 1273f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman cast<InitListExpr>(InitExpr)->getNumInits() == 0) { 1274f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Empty flexible array init always allowed as an extension 1275f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 12764e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie } else if (SemaRef.getLangOpts().CPlusPlus) { 1277f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init in C++; it is not required for gcc 1278f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // compatibility, and it needs work to IRGen correctly in general. 1279f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1280f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (!TopLevelObject) { 1281f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on non-top-level object 1282f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1283f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (Entity.getKind() != InitializedEntity::EK_Variable) { 1284f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on anything which is not a variable. 1285f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1286f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (cast<VarDecl>(Entity.getDecl())->hasLocalStorage()) { 1287f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on local variables. 1288f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1289f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else { 1290f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Allow other cases. 1291f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 1292f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } 129314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 129414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 129596a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(InitExpr->getLocStart(), 129614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl FlexArrayDiag) 129796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar << InitExpr->getLocStart(); 129814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 129914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << Field; 130014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1301f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 1302f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman return FlexArrayDiag != diag::ext_flexible_array_init; 1303f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman} 1304f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 13058ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 13062bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 13071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 130887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 13091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 13104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 13114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1312eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1313eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 13146217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 13151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1316b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1317b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1318b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 131972ab27732ea7a42d756a1e79727f86fbe391b42bRichard Smith // Assume it was supposed to consume a single initializer. 132072ab27732ea7a42d756a1e79727f86fbe391b42bRichard Smith ++Index; 1321b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1322b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 13231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 13243498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 13253498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 13263ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Value-initialize the first named member of the union. 13273ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 13283ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 13293ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl Field != FieldEnd; ++Field) { 13303ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Field->getDeclName()) { 13313ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 13323ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 1333581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity)); 13343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl else 1335581deb3da481053c4993c7600f97acf7768caac5David Blaikie StructuredList->setInitializedFieldInUnion(*Field); 13363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl break; 13373498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13383498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13393498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 13403498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13413498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 134205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 134305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 134405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 134505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 13466217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 134717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1348dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 134980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 135005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 135105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 135205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 135305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 135487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 135587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 135687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 135787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 135887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 135987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 136087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 136187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 13629a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 13634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1364eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1365eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 136605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 136705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1368dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 136980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 137080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 137180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 137280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 137305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 137405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 137505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 137605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 137705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 137844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 137905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 138044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1381dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1382dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1383dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1384dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 138505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 138605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1387b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 138844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 13890bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 13904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 139105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1392b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 13930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 139444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 139554001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 139614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 139714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 1398581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = !SemaRef.CanUseDecl(*Field); 139914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 1400581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, 140114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getInit(Index)->getLocStart()); 140214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 140354001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 140454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Field; 140554001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor hadError = true; 140654001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor continue; 140714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 140854001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 14098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 1410581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 14118ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14128ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1413dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 14140bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 141514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DeclType->isUnionType() && !VerifyOnly) { 14160bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 1417581deb3da481053c4993c7600f97acf7768caac5David Blaikie StructuredList->setInitializedFieldInUnion(*Field); 14180bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 141905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 142005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 14210cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 142244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 142380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 142414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && InitializedSomething && CheckForMissingFields && 142514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Field != FieldEnd && !Field->getType()->isIncompleteArrayType() && 142614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DeclType->isUnionType()) { 142780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 142880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 142980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 143080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 143180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 143280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 143380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 143480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 143580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 14393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check that any remaining fields can be value-initialized. 14403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly && Field != FieldEnd && !DeclType->isUnionType() && 14413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl !Field->getType()->isIncompleteArrayType()) { 14423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: Should check for holes left by designated initializers too. 14433ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (; Field != FieldEnd && !hadError; ++Field) { 14443ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!Field->isUnnamedBitfield()) 14453ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 1446581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity)); 14473ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14483ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14493ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 14501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1451a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1452eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1453eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1454581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (CheckFlexibleArrayInit(Entity, IList->getInit(Index), *Field, 1455f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) { 1456eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1457a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1458a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1459eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1460eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 14618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 1462581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 1463dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 14648ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 1465dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 14678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 1468dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1469987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 14700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 14710cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1472ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1473ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1474ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1475ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1476ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 14771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 14781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1479a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IndirectFieldDecl *IndirectField) { 1480ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1481ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1482ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 14835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Designator, 4> Replacements; 1484a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet for (IndirectFieldDecl::chain_iterator PI = IndirectField->chain_begin(), 1485a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet PE = IndirectField->chain_end(); PI != PE; ++PI) { 1486a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (PI + 1 == PE) 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1488ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1489ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1490ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1491ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1492ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1493a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(isa<FieldDecl>(*PI)); 1494a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Replacements.back().setField(cast<FieldDecl>(*PI)); 1495ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1496ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1497ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1498ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1499ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1500319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1501ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 1502a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet} 15031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1504dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Given an implicit anonymous field, search the IndirectField that 1505a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet/// corresponds to FieldName. 1506a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichetstatic IndirectFieldDecl *FindIndirectFieldDesignator(FieldDecl *AnonField, 1507a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IdentifierInfo *FieldName) { 1508b22b0a53849dbb79da221fcc4671125ad49cb848Argyrios Kyrtzidis if (!FieldName) 1509b22b0a53849dbb79da221fcc4671125ad49cb848Argyrios Kyrtzidis return 0; 1510b22b0a53849dbb79da221fcc4671125ad49cb848Argyrios Kyrtzidis 1511a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(AnonField->isAnonymousStructOrUnion()); 1512a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Decl *NextDecl = AnonField->getNextDeclInContext(); 15133e78b19e51034dd27c6e0d811522148345e299e4Aaron Ballman while (IndirectFieldDecl *IF = 15143e78b19e51034dd27c6e0d811522148345e299e4Aaron Ballman dyn_cast_or_null<IndirectFieldDecl>(NextDecl)) { 1515b22b0a53849dbb79da221fcc4671125ad49cb848Argyrios Kyrtzidis if (FieldName == IF->getAnonField()->getIdentifier()) 1516a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return IF; 1517a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet NextDecl = NextDecl->getNextDeclInContext(); 1518ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1519a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return 0; 1520ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1521ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 152214b0c194b356a1204d081765b3e6699687bed97cSebastian Redlstatic DesignatedInitExpr *CloneDesignatedInitExpr(Sema &SemaRef, 152314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE) { 152414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned NumIndexExprs = DIE->getNumSubExprs() - 1; 152514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SmallVector<Expr*, 4> IndexExprs(NumIndexExprs); 152614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl for (unsigned I = 0; I < NumIndexExprs; ++I) 152714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IndexExprs[I] = DIE->getSubExpr(I + 1); 152814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return DesignatedInitExpr::Create(SemaRef.Context, DIE->designators_begin(), 15293b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer DIE->size(), IndexExprs, 15303b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer DIE->getEqualOrColonLoc(), 153114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->usesGNUSyntax(), DIE->getInit()); 153214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl} 153314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1534425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainnamespace { 1535425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1536425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// Callback to only accept typo corrections that are for field members of 1537425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// the given struct or union. 1538425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainclass FieldInitializerValidatorCCC : public CorrectionCandidateCallback { 1539425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain public: 1540425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain explicit FieldInitializerValidatorCCC(RecordDecl *RD) 1541425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain : Record(RD) {} 1542425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1543425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain virtual bool ValidateCandidate(const TypoCorrection &candidate) { 1544425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldDecl *FD = candidate.getCorrectionDeclAs<FieldDecl>(); 1545425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain return FD && FD->getDeclContext()->getRedeclContext()->Equals(Record); 1546425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain } 1547425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1548425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain private: 1549425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RecordDecl *Record; 1550425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain}; 1551425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1552425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain} 1553425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 155405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 155505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 155605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 155705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 155805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 155905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 15601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 15614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 156205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 156305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 156405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 156505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1566711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1567711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1568711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 156905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157070517ca5c07c4b41ff8662b94ee22047b0299f8cDmitri Gribenko/// @param CurrentObjectType The type of the "current object" (C99 6.7.8p17), 157105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 157205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 157487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 157587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 157605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 157887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 157987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 158005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 158105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 158205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 158305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 15844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 15854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 15864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 15874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 158805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 15891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 15908ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 15919a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 159214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE, 159314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned DesigIdx, 159414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType &CurrentObjectType, 159514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl RecordDecl::field_iterator *NextField, 159614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl llvm::APSInt *NextElementIndex, 159714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &Index, 159814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *StructuredList, 159914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &StructuredIndex, 1600eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1601eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1602711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 160387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 160487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 16056fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16066fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 16076fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 16086fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 16096fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 16106fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 16116fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16129a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 16134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 16146fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16156fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 16166fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 16176fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 16186fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 16196fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 16206fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 162187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 162287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 162305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1624711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 162514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool IsFirstDesignator = (DesigIdx == 0); 162614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 162714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert((IsFirstDesignator || StructuredList) && 162814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Need a non-designated initializer list to start from"); 162914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 163014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Determine the structural initializer list that corresponds to the 163114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // current subobject. 1632a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer StructuredList = IsFirstDesignator? SyntacticToSemantic.lookup(IList) 163314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 163414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList, StructuredIndex, 163514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceRange(D->getStartLocation(), 163614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd())); 163714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(StructuredList && "Expected a structured initializer list"); 163814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 16394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 164087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 164187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 164287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 164487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 164687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 164887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 16491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 16506217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 165187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 165287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 165387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 165487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 165514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 165614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 16574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie << SemaRef.getLangOpts().CPlusPlus << CurrentObjectType; 165887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 165987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 166087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 166187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 16634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 16644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1665ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 166687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 16674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 16681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 166917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 167017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 16714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 16724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 16734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 1674dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1675a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // If we find a field representing an anonymous field, look in the 1676a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // IndirectFieldDecl that follow for the designated initializer. 1677a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField && Field->isAnonymousStructOrUnion()) { 1678a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (IndirectFieldDecl *IF = 1679581deb3da481053c4993c7600f97acf7768caac5David Blaikie FindIndirectFieldDesignator(*Field, FieldName)) { 168014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // In verify mode, don't modify the original. 168114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 168214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE = CloneDesignatedInitExpr(SemaRef, DIE); 1683a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, IF); 1684a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet D = DIE->getDesignator(DesigIdx); 1685a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet break; 1686a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1687a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1688581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (KnownField && KnownField == *Field) 1689022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor break; 1690022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (FieldName && FieldName == Field->getIdentifier()) 16914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 16924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 16934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 169487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 169587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1697a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer if (VerifyOnly) { 1698a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer ++Index; 169914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return true; // No typo correction when just trying this out. 1700a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer } 170114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1702ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1703ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1704ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1705ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 17061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 170717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1708c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 17094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1710c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1711c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1712425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldInitializerValidatorCCC Validator(RT->getDecl()); 1713d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor TypoCorrection Corrected = SemaRef.CorrectTypo( 1714d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor DeclarationNameInfo(FieldName, D->getFieldLoc()), 171516e46dd0c284296cea819dfbf67942ecef02894dKaelyn Uhrain Sema::LookupMemberName, /*Scope=*/0, /*SS=*/0, Validator, 1716425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RT->getDecl()); 1717425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain if (Corrected) { 1718d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedStr( 17194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Corrected.getAsString(SemaRef.getLangOpts())); 1720d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedQuotedStr( 17214e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie Corrected.getQuoted(SemaRef.getLangOpts())); 1722425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain ReplacementField = Corrected.getCorrectionDeclAs<FieldDecl>(); 1723dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(D->getFieldLoc(), 1724c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1725d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FieldName << CurrentObjectType << CorrectedQuotedStr 1726d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), CorrectedStr); 1727dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(ReplacementField->getLocation(), 1728d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor diag::note_previous_decl) << CorrectedQuotedStr; 1729a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer hadError = true; 1730c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1731c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1732c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1733c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1734c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1735c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1736c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1737dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1738c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 17394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 17400820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 17414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 17421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 17434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1744ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1745ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1746ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1747c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1748a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField) { 1749c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1750c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1751c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1752c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1753c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1754c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1755c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1756c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1757581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (ReplacementField == *Field || 1758c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1759c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1760c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1761c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1762c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1763c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 176487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 17654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 17674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 17680bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 17694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 177014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 1771581deb3da481053c4993c7600f97acf7768caac5David Blaikie StructuredList->setInitializedFieldInUnion(*Field); 17720bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 17734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 177454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 177514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 177614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 1777581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = !SemaRef.CanUseDecl(*Field); 177814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 1779581deb3da481053c4993c7600f97acf7768caac5David Blaikie InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, D->getFieldLoc()); 178014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 178154001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 178254001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor return true; 178314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 178454001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 178514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 178614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the designator with the field declaration. 1787581deb3da481053c4993c7600f97acf7768caac5David Blaikie D->setField(*Field); 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Make sure that our non-designated initializer list has space 179014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // for a subobject corresponding to this field. 179114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (FieldIndex >= StructuredList->getNumInits()) 179214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 179314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 17944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1795eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1796eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1797eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1798711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1799eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1800eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 180114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 180214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr::Designator *NextD 180314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = DIE->getDesignator(DesigIdx + 1); 180414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(NextD->getStartLocation(), 180514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_into_flexible_array_member) 180614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SourceRange(NextD->getStartLocation(), 180714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd()); 180814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1809581deb3da481053c4993c7600f97acf7768caac5David Blaikie << *Field; 181014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1811eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1812eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1813eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 18149046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner if (!hadError && !isa<InitListExpr>(DIE->getInit()) && 18159046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner !isa<StringLiteral>(DIE->getInit())) { 1816eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 181714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 181896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(DIE->getInit()->getLocStart(), 181914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_flexible_array_init_needs_braces) 182014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DIE->getInit()->getSourceRange(); 182114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1822581deb3da481053c4993c7600f97acf7768caac5David Blaikie << *Field; 182314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1824eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1825eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1826eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1827f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Check GNU flexible array initializer. 1828581deb3da481053c4993c7600f97acf7768caac5David Blaikie if (!Invalid && CheckFlexibleArrayInit(Entity, DIE->getInit(), *Field, 1829f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) 1830eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1831eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1832eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1833eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1834eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1835eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1836eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1837eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1838eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1839eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1840eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1841eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 18428ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 18438ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 1844581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 18458ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1846eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 18478ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1848eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1849eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1850eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1851eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1852eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1853eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1854eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1855eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1856eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1857eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1858eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1859262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie QualType FieldType = Field->getType(); 1860eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1861dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18629a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 1863581deb3da481053c4993c7600f97acf7768caac5David Blaikie InitializedEntity::InitializeMember(*Field, &Entity); 1864dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 1865dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FieldType, 0, 0, Index, 18669a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1867eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1868eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1869eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 187087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 187187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 187287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 187387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 18744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 187505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 187687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 187787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 187887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 187987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 188087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 18814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 188287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 188387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 188405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 188634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 188734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1888ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1889ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1890ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1891ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 189287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 189387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 1894dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18958ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 18964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 189787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 189887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 189905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 190087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 190187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 190387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 190587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 190787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 190887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 190987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 191087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 191187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 191287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 191387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 191487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 19150820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 191687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 191714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 191814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 191914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << CurrentObjectType; 192087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 192187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 192287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 192305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 192487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 192534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 192634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 192787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 1928a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DesignatedStartIndex = IndexExpr->EvaluateKnownConstInt(SemaRef.Context); 192934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 193034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 193187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 19323bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 19331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 1934a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeStart(*D)->EvaluateKnownConstInt(SemaRef.Context); 19351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 1936a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeEnd(*D)->EvaluateKnownConstInt(SemaRef.Context); 193787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 193834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1939e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // Codegen can't handle evaluating array range designators that have side 1940e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // effects, because we replicate the AST value for each initialized element. 1941e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // As such, set the sawArrayRangeDesignator() bit if we initialize multiple 1942e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // elements with something that has a side effect, so codegen can emit an 1943e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // "error unsupported" error instead of miscompiling the app. 1944e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner if (DesignatedStartIndex.getZExtValue()!=DesignatedEndIndex.getZExtValue()&& 194514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getInit()->HasSideEffects(SemaRef.Context) && !VerifyOnly) 1946a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 194787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 194805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 194987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 195087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 19519f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19529f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 195334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 19549f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19559f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 195634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 195734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 1958a4e20e1e43df39e39328035c84c46fdcbbf3a01eEli Friedman if (!VerifyOnly) 195996a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(IndexExpr->getLocStart(), 196014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_array_designator_too_large) 196114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 196214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IndexExpr->getSourceRange(); 196387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 196487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 196505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 196734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 196834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 19699f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19709f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 19713bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 19723bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 19739f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19749f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 197534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 197634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 197705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 19781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 19804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 198114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && 198214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 19831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 198434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 198534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 198734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 198834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 199034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 199134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 1992dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19939a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 19948ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 19959a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 199634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 199734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 199834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 199934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 2000dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 20019a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 2002dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 2003dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementType, 0, 0, Index, 20049a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 2005eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 2006eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 200734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 200887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 200934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 201034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 201134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 201234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 201387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 201487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 201587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 201687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 201787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 201834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 20194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 202087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 202187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 20221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 202334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 202434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 202534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 202687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 202705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 2028dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 2029784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 20304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 20311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 203205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 203305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 20344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 20354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 20364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 20374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 20384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 20394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 20404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 20414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 204214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 204314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return 0; // No structured list in verification-only mode. 20444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 20454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 2046a789416a497b2e14e7c2fd721d03e541120bac8dBenjamin Kramer ExistingInit = SyntacticToSemantic.lookup(IList); 20474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 20484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 20491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 20514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 20524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 20544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 20554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 20564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 20574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 20581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 20604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 20611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 20634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 20644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 20651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 2066ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 20674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 206896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(ExistingInit->getLocStart(), 20694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 207054f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 20714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 20724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 20734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 2075709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 20763b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer InitRange.getBegin(), MultiExprArg(), 2077ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 2078ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 20795c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman QualType ResultType = CurrentObjectType; 20805c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman if (!ResultType->isArrayType()) 20815c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman ResultType = ResultType.getNonLValueExprType(SemaRef.Context); 20825c89c399ba0a171e3312a74e008d61d174d961f3Eli Friedman Result->setType(ResultType); 20834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2084fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 2085fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 208608457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 2087f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis bool GotNumInits = false; 2088f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (!StructuredList) { 208908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 2090f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2091f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } else if (Index < IList->getNumInits()) { 2092f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) { 209308457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 2094f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2095f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } 209608457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 209708457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 20981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 2099fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 2100fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 2101fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 2102fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 2103fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 2104f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (GotNumInits && NumElements > NumInits) 2105fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 2106fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2107183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 2108fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 21096217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 2110fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 2111fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 2112fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 2113fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 21141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 211517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 2116fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2117fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 2118709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 2119fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 21204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 21214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 21224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 2123709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 21244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 21254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 21264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 21274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 21304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 21334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 21344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 21354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 21364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 21374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 21384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 21394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 21404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2141709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 2142709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 21434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 214496a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(expr->getLocStart(), 21454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 21464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 214796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SemaRef.Diag(PrevInit->getLocStart(), 21484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 214954f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 21504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 21514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 21544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 215605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 2157282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// value. This is essentially just a wrapper around 21583bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 215905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 2160282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// failure. Returns the index expression, possibly with an implicit cast 2161282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// added, on success. If everything went okay, Value will receive the 2162282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith/// value of the constant expression. 2163282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smithstatic ExprResult 21643bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 216596a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = Index->getLocStart(); 216605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 216705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 2168282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith ExprResult Result = S.VerifyIntegerConstantExpression(Index, &Value); 2169282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (Result.isInvalid()) 2170282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return Result; 21713bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 21723bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 21733bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 217405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 217505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217653d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 2177282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return Result; 217805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 217905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218060d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 21817663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky SourceLocation Loc, 21827663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky bool GNUSyntax, 21837663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky ExprResult Init) { 218405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 218505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 21875f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<ASTDesignator, 32> Designators; 21885f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Expr *, 32> InitExpressions; 218905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 219005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 219105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 219205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 219305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 219405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 21951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 219605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 219705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 219805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 219905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 220005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 220105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 2202282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!Index->isTypeDependent() && !Index->isValueDependent()) 2203282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith Index = CheckArrayDesignatorExpr(*this, Index, IndexValue).take(); 2204282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!Index) 220505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 220605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 220705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 220905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 221005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 221105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 221205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 221305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 221405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 221505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 221605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 221705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 221805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 221905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 22209ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 22219ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 22229ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 22239ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 2224282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!StartDependent) 2225282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith StartIndex = 2226282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith CheckArrayDesignatorExpr(*this, StartIndex, StartValue).take(); 2227282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!EndDependent) 2228282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith EndIndex = CheckArrayDesignatorExpr(*this, EndIndex, EndValue).take(); 2229282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 2230282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith if (!StartIndex || !EndIndex) 223105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 2232d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 2233d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 22349ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 22359ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 22369ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 22379f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad EndValue = EndValue.extend(StartValue.getBitWidth()); 2238d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 22399f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad StartValue = StartValue.extend(EndValue.getBitWidth()); 2240d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 2241c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 2242d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 22431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 2244d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 2245d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 2246d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 2247d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 2249d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 2250d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 2251d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 2252d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 2253d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 225405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 225605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 226105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 226205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 226405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 226505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 226605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 2267beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 2268beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 22693b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer InitExpressions, Loc, GNUSyntax, 22703b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer Init.takeAs<Expr>()); 2271dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 22724e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().C99) 22732d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor Diag(DIE->getLocStart(), diag::ext_designated_init) 22742d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor << DIE->getSourceRange(); 2275dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 227605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 227705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 2278c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 2279cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 2280cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 2281cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 228239da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 2283dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 2284cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 2285dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi : Parent(&Parent), Index(Index) 2286cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 2287d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 2288d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 2289d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 22900c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (const VectorType *VT = Parent.getType()->getAs<VectorType>()) { 2291d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 22920c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = VT->getElementType(); 22930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else { 22940c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman const ComplexType *CT = Parent.getType()->getAs<ComplexType>(); 22950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(CT && "Unexpected type"); 22960c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Kind = EK_ComplexElement; 22970c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = CT->getElementType(); 2298d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 229920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 230020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2301dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 2302711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 2303711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 230420093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 230520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 230620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 2307711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 2308711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 2309711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 2310dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2311d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 231220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 231320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 231420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 231599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 231699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 2317f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: { 2318f85e193739c953358c865005855253af4f68a497John McCall ParmVarDecl *D = reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2319f85e193739c953358c865005855253af4f68a497John McCall return (D ? D->getDeclName() : DeclarationName()); 2320f85e193739c953358c865005855253af4f68a497John McCall } 2321a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 2322a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 232399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 232499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 232599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23264773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23274773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor return Capture.Var->getDeclName(); 23284773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor 232999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 233099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 233118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 233299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 233399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 2334059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2335d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2336d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23370c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2338310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 233999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 234099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 2341dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23427530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 234399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 234499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23457abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 23467abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 23477abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 23487abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 23497abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 23507abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 2351f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: 2352f85e193739c953358c865005855253af4f68a497John McCall return reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2353f85e193739c953358c865005855253af4f68a497John McCall 23547abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 23557abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 23567abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 23577abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 23587abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 2359059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2360d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2361d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23620c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2363310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23644773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23657abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 23667abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 2367dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23687530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 23697abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 23707abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 23713c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregorbool InitializedEntity::allowsNRVO() const { 23723c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor switch (getKind()) { 23733c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Result: 23743c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Exception: 23753c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return LocAndNRVO.NRVO; 2376dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23773c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Variable: 23783c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Parameter: 23793c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Member: 23803c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_New: 23813c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Temporary: 23823c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Base: 2383059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 23843c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_ArrayElement: 23853c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_VectorElement: 23860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2387310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23884773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case EK_LambdaCapture: 23893c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor break; 23903c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor } 23913c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 23923c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return false; 23933c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor} 23943c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 239520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 239620093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 239720093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 239820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 239920093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 240020093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 240120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 240220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 2403906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 240420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 240520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 240620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 2407523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 240820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 240920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 2410906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 241120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 2412d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 24138713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 241413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 241513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 241651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 241771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 241818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2419cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 2420569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 2421cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 24220f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 2423f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 2424f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 2425f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 24262b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: 242720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 2428dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 242920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 243020093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 243120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 243220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 243320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2434b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 24353b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return !Steps.empty() && Steps.back().Kind == SK_BindReference; 2436b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2437b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2438b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2439d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 2440b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2441dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2442b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2443b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2444b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2445b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2446b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2447b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2448b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2449b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2450b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2451b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2452b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2453429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 2454b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2455b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2456b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2457b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 245872a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 2459cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 2460cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 24618713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 246273076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 24635acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 24642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: 246570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: 2466b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2468b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2469b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2470b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2471cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 2472b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2473b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2474dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 24757530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 2476b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2477b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2478d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2479d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2480d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2481d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 248222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 248322c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 248422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddAddressOverloadResolutionStep(FunctionDecl *Function, 248522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair Found, 248622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 248720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 248820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 248920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 249022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 24919aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 24926bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 249320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 249420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 249520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2496dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 24975baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 249820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 24995baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 25005baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: S.Kind = SK_CastDerivedToBaseRValue; break; 25015baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break; 25025baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break; 2503906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 250420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 250520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 250620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 250720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2508dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddReferenceBindingStep(QualType T, 250920093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 251020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 251120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 251220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 251320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 251420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 251520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2516523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2517523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2518523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2519523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2520523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2521523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2522523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 252322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 252422c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence::AddUserConversionStep(FunctionDecl *Function, 252522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair FoundDecl, 252622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 252722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 252820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 252920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 253003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 253122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 25329aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 25339aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 253420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 253520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 253620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 253720093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 25385baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 253920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 254038a4ffe5244e6be46f1b1f8394342a77836be776John McCall S.Kind = SK_QualificationConversionRValue; // work around a gcc warning 25415baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 25425baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: 2543906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionRValue; 2544906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 25455baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: 2546906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionXValue; 2547906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 25485baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: 2549906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionLValue; 2550906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2551906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 255220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 255320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 255420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 255520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 255620093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 255720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 255820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 255920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 256020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 256120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 256220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 256320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 256420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 256520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2566d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2567d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2568d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2569d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2570d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2571d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2572d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2573dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 257422c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 257522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddConstructorInitializationStep(CXXConstructorDecl *Constructor, 257622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara AccessSpecifier Access, 257722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 257810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates, 25796cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool FromInitList, bool AsInitList) { 258051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 25816cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl S.Kind = FromInitList && !AsInitList ? SK_ListConstructorCall 25826cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl : SK_ConstructorInitialization; 258351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 258422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 25859aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 25869aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 258751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 258851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 258951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 259071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 259171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 259271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 259371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 259471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 259571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 259671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 259718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 259818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 259918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 260018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 260118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 260218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 260318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2604cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2605cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2606cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2607cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2608cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2609cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2610cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2611569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregorvoid InitializationSequence::AddObjCObjectConversionStep(QualType T) { 2612569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Step S; 2613569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Kind = SK_ObjCObjectConversion; 2614569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Type = T; 2615569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Steps.push_back(S); 2616569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor} 2617569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 2618cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorvoid InitializationSequence::AddArrayInitStep(QualType T) { 2619cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Step S; 2620cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Kind = SK_ArrayInit; 2621cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Type = T; 2622cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Steps.push_back(S); 2623cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 2624cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 26250f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smithvoid InitializationSequence::AddParenthesizedArrayInitStep(QualType T) { 26260f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Step S; 26270f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Kind = SK_ParenthesizedArrayInit; 26280f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Type = T; 26290f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Steps.push_back(S); 26300f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith} 26310f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 2632f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddPassByIndirectCopyRestoreStep(QualType type, 2633f85e193739c953358c865005855253af4f68a497John McCall bool shouldCopy) { 2634f85e193739c953358c865005855253af4f68a497John McCall Step s; 2635f85e193739c953358c865005855253af4f68a497John McCall s.Kind = (shouldCopy ? SK_PassByIndirectCopyRestore 2636f85e193739c953358c865005855253af4f68a497John McCall : SK_PassByIndirectRestore); 2637f85e193739c953358c865005855253af4f68a497John McCall s.Type = type; 2638f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(s); 2639f85e193739c953358c865005855253af4f68a497John McCall} 2640f85e193739c953358c865005855253af4f68a497John McCall 2641f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddProduceObjCObjectStep(QualType T) { 2642f85e193739c953358c865005855253af4f68a497John McCall Step S; 2643f85e193739c953358c865005855253af4f68a497John McCall S.Kind = SK_ProduceObjCObject; 2644f85e193739c953358c865005855253af4f68a497John McCall S.Type = T; 2645f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(S); 2646f85e193739c953358c865005855253af4f68a497John McCall} 2647f85e193739c953358c865005855253af4f68a497John McCall 26482b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redlvoid InitializationSequence::AddStdInitializerListConstructionStep(QualType T) { 26492b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Step S; 26502b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Kind = SK_StdInitializerList; 26512b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Type = T; 26522b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Steps.push_back(S); 26532b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl} 26542b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 265513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlvoid InitializationSequence::RewrapReferenceInitList(QualType T, 265613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic) { 265713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl assert(Syntactic->getNumInits() == 1 && 265813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl "Can only rewrap trivial init lists."); 265913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Step S; 266013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_UnwrapInitList; 266113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = Syntactic->getInit(0)->getType(); 266213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.insert(Steps.begin(), S); 266313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 266413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_RewrapInitList; 266513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = T; 266613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.WrappingSyntacticList = Syntactic; 266713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.push_back(S); 266813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 266913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 2670dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 267120093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 26727491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(FailedSequence); 267320093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 267420093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 267520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 267620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 267720093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 267820093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 267920093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 268020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2681f85e193739c953358c865005855253af4f68a497John McCallstatic void MaybeProduceObjCObject(Sema &S, 2682f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 2683f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity) { 26844e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().ObjCAutoRefCount) return; 2685f85e193739c953358c865005855253af4f68a497John McCall 2686f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a parameter, produce the value if it's marked 2687f85e193739c953358c865005855253af4f68a497John McCall /// __attribute__((ns_consumed)). 2688f85e193739c953358c865005855253af4f68a497John McCall if (Entity.getKind() == InitializedEntity::EK_Parameter) { 2689f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.isParameterConsumed()) 2690f85e193739c953358c865005855253af4f68a497John McCall return; 2691f85e193739c953358c865005855253af4f68a497John McCall 2692f85e193739c953358c865005855253af4f68a497John McCall assert(Entity.getType()->isObjCRetainableType() && 2693f85e193739c953358c865005855253af4f68a497John McCall "consuming an object of unretainable type?"); 2694f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2695f85e193739c953358c865005855253af4f68a497John McCall 2696f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a return value, if the return type is a 2697f85e193739c953358c865005855253af4f68a497John McCall /// retainable type, then returns need to immediately retain the 2698f85e193739c953358c865005855253af4f68a497John McCall /// object. If an autorelease is required, it will be done at the 2699f85e193739c953358c865005855253af4f68a497John McCall /// last instant. 2700f85e193739c953358c865005855253af4f68a497John McCall } else if (Entity.getKind() == InitializedEntity::EK_Result) { 2701f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.getType()->isObjCRetainableType()) 2702f85e193739c953358c865005855253af4f68a497John McCall return; 2703f85e193739c953358c865005855253af4f68a497John McCall 2704f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2705f85e193739c953358c865005855253af4f68a497John McCall } 2706f85e193739c953358c865005855253af4f68a497John McCall} 2707f85e193739c953358c865005855253af4f68a497John McCall 2708f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// \brief When initializing from init list via constructor, handle 2709f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// initialization of an object of type std::initializer_list<T>. 271010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// 2711f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// \return true if we have handled initialization of an object of type 2712f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith/// std::initializer_list<T>, false otherwise. 2713f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smithstatic bool TryInitializerListConstruction(Sema &S, 2714f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *List, 2715f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith QualType DestType, 2716f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence &Sequence) { 2717f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith QualType E; 2718f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (!S.isStdInitializerList(DestType, &E)) 27191d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith return false; 27201d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith 2721f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // Check that each individual element can be copy-constructed. But since we 2722f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // have no place to store further information, we'll recalculate everything 2723f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // later. 2724f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 2725f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith S.Context.getConstantArrayType(E, 2726f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 2727f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith List->getNumInits()), 2728f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith ArrayType::Normal, 0)); 2729f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializedEntity Element = InitializedEntity::InitializeElement(S.Context, 2730f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 0, HiddenArray); 2731f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith for (unsigned i = 0, n = List->getNumInits(); i < n; ++i) { 2732f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Element.setElementIndex(i); 2733f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (!S.CanPerformCopyInitialization(Element, List->getInit(i))) { 2734f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence.SetFailed( 2735f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence::FK_InitListElementCopyFailure); 273610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return true; 273710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 273810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 2739f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence.AddStdInitializerListConstructionStep(DestType); 2740f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return true; 274110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 274210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 274396715b288060c8e168cbca62f366c12e88c5483dSebastian Redlstatic OverloadingResult 274496715b288060c8e168cbca62f366c12e88c5483dSebastian RedlResolveConstructorOverload(Sema &S, SourceLocation DeclLoc, 274596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Expr **Args, unsigned NumArgs, 274696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet &CandidateSet, 274796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator Con, 274896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator ConEnd, 274996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet::iterator &Best, 275096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl bool CopyInitializing, bool AllowExplicit, 275151ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl bool OnlyListConstructors, bool InitListSyntax) { 275296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl CandidateSet.clear(); 275396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 275496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl for (; Con != ConEnd; ++Con) { 275596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl NamedDecl *D = *Con; 275696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 275796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl bool SuppressUserConversions = false; 275896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 275996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Find the constructor (which may be a template). 276096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl CXXConstructorDecl *Constructor = 0; 276196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 276296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (ConstructorTmpl) 276396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Constructor = cast<CXXConstructorDecl>( 276496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl ConstructorTmpl->getTemplatedDecl()); 276596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl else { 276696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl Constructor = cast<CXXConstructorDecl>(D); 276796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 276896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // If we're performing copy initialization using a copy constructor, we 276951ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl // suppress user-defined conversions on the arguments. We do the same for 277051ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl // move constructors. 277151ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl if ((CopyInitializing || (InitListSyntax && NumArgs == 1)) && 277251ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl Constructor->isCopyOrMoveConstructor()) 277396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl SuppressUserConversions = true; 277496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 277596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 277696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (!Constructor->isInvalidDecl() && 277796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl (AllowExplicit || !Constructor->isExplicit()) && 27786cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl (!OnlyListConstructors || S.isInitListConstructor(Constructor))) { 277996715b288060c8e168cbca62f366c12e88c5483dSebastian Redl if (ConstructorTmpl) 278096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 278196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl /*ExplicitArgs*/ 0, 278251ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl llvm::makeArrayRef(Args, NumArgs), 278351ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl CandidateSet, SuppressUserConversions); 2784ed878af7914df535b32d64f555fa118413186672Douglas Gregor else { 2785ed878af7914df535b32d64f555fa118413186672Douglas Gregor // C++ [over.match.copy]p1: 2786ed878af7914df535b32d64f555fa118413186672Douglas Gregor // - When initializing a temporary to be bound to the first parameter 2787ed878af7914df535b32d64f555fa118413186672Douglas Gregor // of a constructor that takes a reference to possibly cv-qualified 2788ed878af7914df535b32d64f555fa118413186672Douglas Gregor // T as its first argument, called with a single argument in the 2789ed878af7914df535b32d64f555fa118413186672Douglas Gregor // context of direct-initialization, explicit conversion functions 2790ed878af7914df535b32d64f555fa118413186672Douglas Gregor // are also considered. 2791ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConv = AllowExplicit && !CopyInitializing && 2792ed878af7914df535b32d64f555fa118413186672Douglas Gregor NumArgs == 1 && 2793ed878af7914df535b32d64f555fa118413186672Douglas Gregor Constructor->isCopyOrMoveConstructor(); 279496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl S.AddOverloadCandidate(Constructor, FoundDecl, 279513a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs), CandidateSet, 2796ed878af7914df535b32d64f555fa118413186672Douglas Gregor SuppressUserConversions, 2797ed878af7914df535b32d64f555fa118413186672Douglas Gregor /*PartialOverloading=*/false, 2798ed878af7914df535b32d64f555fa118413186672Douglas Gregor /*AllowExplicit=*/AllowExplicitConv); 2799ed878af7914df535b32d64f555fa118413186672Douglas Gregor } 280096715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 280196715b288060c8e168cbca62f366c12e88c5483dSebastian Redl } 280296715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 280396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Perform overload resolution and return the result. 280496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl return CandidateSet.BestViableFunction(S, DeclLoc, Best); 280596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl} 280696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 280710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 280810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// enumerates the constructors of the initialized entity and performs overload 280910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// resolution to select the best. 281008ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl/// If InitListSyntax is true, this is list-initialization of a non-aggregate 281110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// class type. 281210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic void TryConstructorInitialization(Sema &S, 281310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 281410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 281510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Args, unsigned NumArgs, 281610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl QualType DestType, 281710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitializationSequence &Sequence, 281808ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl bool InitListSyntax = false) { 281908ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl assert((!InitListSyntax || (NumArgs == 1 && isa<InitListExpr>(Args[0]))) && 282008ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl "InitListSyntax must come with a single initializer list argument."); 282108ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl 282210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // The type we're constructing needs to be complete. 282310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 282469a30b838c723cb1850de55cfa48a402cfeeb6e0Douglas Gregor Sequence.setIncompleteTypeFailure(DestType); 282596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl return; 282610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 282710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 282810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const RecordType *DestRecordType = DestType->getAs<RecordType>(); 282910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl assert(DestRecordType && "Constructor initialization requires record type"); 283010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *DestRecordDecl 283110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXRecordDecl>(DestRecordType->getDecl()); 283210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 283396715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Build the candidate set directly in the initialization sequence 283496715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // structure, so that it will persist if we fail. 283596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 283696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl 283796715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // Determine whether we are allowed to call explicit constructors or 283896715b288060c8e168cbca62f366c12e88c5483dSebastian Redl // explicit conversion operators. 283970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl bool AllowExplicit = Kind.AllowExplicit() || InitListSyntax; 28406cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool CopyInitialization = Kind.getKind() == InitializationKind::IK_Copy; 284108ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl 284210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - Otherwise, if T is a class type, constructors are considered. The 284310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // applicable constructors are enumerated, and the best one is chosen 284410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // through overload resolution. 284596715b288060c8e168cbca62f366c12e88c5483dSebastian Redl DeclContext::lookup_iterator ConStart, ConEnd; 284696715b288060c8e168cbca62f366c12e88c5483dSebastian Redl llvm::tie(ConStart, ConEnd) = S.LookupConstructors(DestRecordDecl); 284710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 28486cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl OverloadingResult Result = OR_No_Viable_Function; 284910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet::iterator Best; 28506cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl bool AsInitializerList = false; 28516cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 28526cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // C++11 [over.match.list]p1: 28536cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // When objects of non-aggregate type T are list-initialized, overload 28546cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // resolution selects the constructor in two phases: 28556cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // - Initially, the candidate functions are the initializer-list 28566cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // constructors of the class T and the argument list consists of the 28576cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // initializer list as a single argument. 28586cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (InitListSyntax) { 2859f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *ILE = cast<InitListExpr>(Args[0]); 28606cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl AsInitializerList = true; 2861f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 2862f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // If the initializer list has no elements and T has a default constructor, 2863f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // the first phase is omitted. 2864f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (ILE->getNumInits() != 0 || 2865f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith (!DestRecordDecl->hasDeclaredDefaultConstructor() && 2866f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith !DestRecordDecl->needsImplicitDefaultConstructor())) 2867f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, NumArgs, 2868f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith CandidateSet, ConStart, ConEnd, Best, 2869f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith CopyInitialization, AllowExplicit, 2870f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith /*OnlyListConstructor=*/true, 2871f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListSyntax); 28726cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 28736cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // Time to unwrap the init list. 28746cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Args = ILE->getInits(); 28756cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl NumArgs = ILE->getNumInits(); 28766cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl } 28776cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl 28786cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // C++11 [over.match.list]p1: 28796cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // - If no viable initializer-list constructor is found, overload resolution 28806cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // is performed again, where the candidate functions are all the 2881f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // constructors of the class T and the argument list consists of the 28826cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl // elements of the initializer list. 28836cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (Result == OR_No_Viable_Function) { 28846cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl AsInitializerList = false; 28856cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, NumArgs, 28866cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CandidateSet, ConStart, ConEnd, Best, 28876cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl CopyInitialization, AllowExplicit, 288851ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl /*OnlyListConstructors=*/false, 288951ad9cd0644c9acf442f049aed98b66f7b1041a2Sebastian Redl InitListSyntax); 28906cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl } 28916cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl if (Result) { 289208ae369fbe870cfb5077fbd1c652836b8dbeab8bSebastian Redl Sequence.SetOverloadFailure(InitListSyntax ? 2893cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ListConstructorOverloadFailed : 2894cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ConstructorOverloadFailed, 289510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Result); 289610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 289710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 289810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 2899f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // C++11 [dcl.init]p6: 290010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If a program calls for the default initialization of an object 290110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // of a const-qualified type T, T shall be a class type with a 290210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // user-provided default constructor. 290310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default && 290410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Entity.getType().isConstQualified() && 29055121781d756e7814168b4255a57545d5ca497ec3Aaron Ballman !cast<CXXConstructorDecl>(Best->Function)->isUserProvided()) { 290610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 290710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 290810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 290910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 291070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // C++11 [over.match.list]p1: 291170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // In copy-list-initialization, if an explicit constructor is chosen, the 291270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl // initializer is ill-formed. 291370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 291470e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl if (InitListSyntax && !Kind.AllowExplicit() && CtorDecl->isExplicit()) { 291570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_ExplicitConstructor); 291670e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl return; 291770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl } 291870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 291910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Add the constructor initialization step. Any cv-qualification conversion is 292010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // subsumed by the initialization. 292110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = (CandidateSet.size() > 1); 292210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.AddConstructorInitializationStep(CtorDecl, 292310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Best->FoundDecl.getAccess(), 292410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, HadMultipleCandidates, 29256cd03dbb310f472b14b8d6d69d8c9b5b7f1200e2Sebastian Redl InitListSyntax, AsInitializerList); 292610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 292710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 292813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic bool 292913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian RedlResolveOverloadedFunctionForReferenceBinding(Sema &S, 293013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 293113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &SourceType, 293213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &UnqualifiedSourceType, 293313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType UnqualifiedTargetType, 293413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 293513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (S.Context.getCanonicalType(UnqualifiedSourceType) == 293613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Context.OverloadTy) { 293713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl DeclAccessPair Found; 293813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool HadMultipleCandidates = false; 293913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (FunctionDecl *Fn 294013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.ResolveAddressOfOverloadedFunction(Initializer, 294113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedTargetType, 294213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl false, Found, 294313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl &HadMultipleCandidates)) { 294413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddAddressOverloadResolutionStep(Fn, Found, 294513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl HadMultipleCandidates); 294613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceType = Fn->getType(); 294713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedSourceType = SourceType.getUnqualifiedType(); 294813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } else if (!UnqualifiedTargetType->isRecordType()) { 294913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 295013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return true; 295113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 295213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 295313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return false; 295413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 295513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 295613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 295713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 295813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 295913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 296013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 296113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 296213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 296313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 296413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 296513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 2966f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smithstatic void TryValueInitialization(Sema &S, 2967f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith const InitializedEntity &Entity, 2968f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith const InitializationKind &Kind, 2969f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence &Sequence, 2970f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *InitList = 0); 2971f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 297213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryListInitialization(Sema &S, 297313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 297413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 297513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 297613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 297713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 297813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Attempt list initialization of a reference. 297913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceListInitialization(Sema &S, 298013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 298113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 298213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 298313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) 298413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl{ 298513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // First, catch C++03 where this isn't possible. 29864e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x) { 298713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 298813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 298913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 299013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 299113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 299213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 299313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals; 299413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 299513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 299613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Reference initialization via an initializer list works thus: 299713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If the initializer list consists of a single element that is 299813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // reference-related to the referenced type, bind directly to that element 299913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // (possibly creating temporaries). 300013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Otherwise, initialize a temporary with the initializer list and 300113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // bind to that. 300213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (InitList->getNumInits() == 1) { 300313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer = InitList->getInit(0); 300413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2 = Initializer->getType(); 300513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals; 300613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 300713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 300813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If this fails, creating a temporary wouldn't work either. 300913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 301013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 301113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 301213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 301313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 301413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool dummy1, dummy2, dummy3; 301513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sema::ReferenceCompareResult RefRelationship 301613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, dummy1, 301713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl dummy2, dummy3); 301813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (RefRelationship >= Sema::Ref_Related) { 301913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Try to bind the reference here. 302013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 302113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 302213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) 302313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.RewrapReferenceInitList(cv1T1, InitList); 302413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 302513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 302613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 302713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 302813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Not reference-related. Create a temporary and bind to that. 302913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 303013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 303113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryListInitialization(S, TempEntity, Kind, InitList, Sequence); 303213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) { 303313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (DestType->isRValueReferenceType() || 303413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (T1Quals.hasConst() && !T1Quals.hasVolatile())) 303513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 303613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else 303713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed( 303813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 303913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 304013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 304113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 304212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola/// \brief Attempt list initialization (C++0x [dcl.init.list]) 304312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindolastatic void TryListInitialization(Sema &S, 304412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializedEntity &Entity, 304512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializationKind &Kind, 304612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitListExpr *InitList, 304712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitializationSequence &Sequence) { 304812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 304912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 305014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // C++ doesn't allow scalar initialization with more than one argument. 305114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // But C99 complex numbers are scalars and it makes sense there. 30524e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus && DestType->isScalarType() && 305314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DestType->isAnyComplexType() && InitList->getNumInits() > 1) { 305414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 305514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 305614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 305714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DestType->isReferenceType()) { 305813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceListInitialization(S, Entity, Kind, InitList, Sequence); 305912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola return; 306014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 3061d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (DestType->isRecordType()) { 3062d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (S.RequireCompleteType(InitList->getLocStart(), DestType, 0)) { 306369a30b838c723cb1850de55cfa48a402cfeeb6e0Douglas Gregor Sequence.setIncompleteTypeFailure(DestType); 3064d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl return; 3065d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } 3066d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl 3067f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // C++11 [dcl.init.list]p3: 3068f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - If T is an aggregate, aggregate initialization is performed. 3069d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl if (!DestType->isAggregateType()) { 30704e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus0x) { 3071f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - Otherwise, if the initializer list has no elements and T is a 3072f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // class type with a default constructor, the object is 3073f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // value-initialized. 3074f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (InitList->getNumInits() == 0) { 3075f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith CXXRecordDecl *RD = DestType->getAsCXXRecordDecl(); 3076f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (RD->hasDeclaredDefaultConstructor() || 3077f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith RD->needsImplicitDefaultConstructor()) { 3078f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith TryValueInitialization(S, Entity, Kind, Sequence, InitList); 3079f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return; 3080f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith } 3081f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith } 3082f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3083f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - Otherwise, if T is a specialization of std::initializer_list<E>, 3084f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // an initializer_list object constructed [...] 3085f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (TryInitializerListConstruction(S, InitList, DestType, Sequence)) 3086f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return; 3087f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3088f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // - Otherwise, if T is a class type, constructors are considered. 3089d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Expr *Arg = InitList; 3090f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith TryConstructorInitialization(S, Entity, Kind, &Arg, 1, DestType, 3091f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence, /*InitListSyntax*/true); 3092d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } else 3093d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl Sequence.SetFailed( 3094d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl InitializationSequence::FK_InitListBadDestinationType); 3095d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl return; 3096d2231c9424d6cbbcecb6f89cc2de5b987327aeaaSebastian Redl } 309714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 309814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 309914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker CheckInitList(S, Entity, InitList, 3100c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/true, 3101168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 31024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 310314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (CheckInitList.HadError()) { 310414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ListInitializationFailed); 310514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 310612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola } 310712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 310814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Add the list initialization step with the built init list. 310912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Sequence.AddListInitializationStep(DestType); 311012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola} 311120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 311220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 311320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 311420093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 311520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 311620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 3117ed878af7914df535b32d64f555fa118413186672Douglas Gregor Expr *Initializer, 3118ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowRValues, 311920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3120d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 312120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 312220093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 312320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 312420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 312520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 312620093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 3127569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion; 3128f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion; 3129dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 3130569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T1, T2, DerivedToBase, 3131f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, 3132f85e193739c953358c865005855253af4f68a497John McCall ObjCLifetimeConversion) && 313320093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 313460cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 3135569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor (void)ObjCConversion; 3136f85e193739c953358c865005855253af4f68a497John McCall (void)ObjCLifetimeConversion; 3137f85e193739c953358c865005855253af4f68a497John McCall 313820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 313920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 314020093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 314120093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 314220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 314320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 314420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 3145168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3146ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConvs = Kind.allowExplicitConversionFunctions(); 3147ed878af7914df535b32d64f555fa118413186672Douglas Gregor 314820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 31496b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && 31506b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T1, 0)) { 315120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 315220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 315320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 3154572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall 315520093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3156e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(T1RecordDecl); 315720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 31589aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 31599aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 31609aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 316120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 316220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 31639aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 316420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 316520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 316620093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 316720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 31689aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 3169dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 317020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 317120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 317220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 31739aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 317486820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 317513a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 3176b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 317720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 31789aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 317913a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 3180b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 318120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3182dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 318320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3184572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) 3185572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3186dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 31876b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor const RecordType *T2RecordType = 0; 31886b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if ((T2RecordType = T2->getAs<RecordType>()) && 31896b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T2, 0)) { 319020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 319120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 319220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 319320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3194eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 319520093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 3196eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3197eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 319820093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 319920093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 320020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 320120093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3202dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 320320093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 320420093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 320520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 320620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 320720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32084680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Conv = cast<CXXConversionDecl>(D); 3209dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 321020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 321120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 321220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 3213dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Do we need to make sure that we only consider conversion 3214dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // candidates with reference-compatible results? That might be needed to 321520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 3216ed878af7914df535b32d64f555fa118413186672Douglas Gregor if ((AllowExplicitConvs || !Conv->isExplicit()) && 321720093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 321820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 32199aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 322086820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 3221564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor DestType, CandidateSet); 322220093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32239aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 3224564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor Initializer, DestType, CandidateSet); 322520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 322620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 322720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3228572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) 3229572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3230dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 323120093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 323220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3233dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 323420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 3235dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (OverloadingResult Result 32368fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) 323720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 323803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 323920093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 324003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 324125ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // This is the overload that will actually be used for the initialization, so 324225ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // mark it as used. 32435f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(DeclLoc, Function); 324425ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 324503981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 324620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 324720093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 324820093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 324920093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 325003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 325103981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 325222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 32539aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 325422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara T2.getNonLValueExprType(S.Context), 325522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 325603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 3257dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Determine whether we need to perform derived-to-base or 325803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 32595baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = VK_RValue; 3260906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl if (T2->isLValueReferenceType()) 32615baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = VK_LValue; 3262906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl else if (const RValueReferenceType *RRef = T2->getAs<RValueReferenceType>()) 32635baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = RRef->getPointeeType()->isFunctionType() ? VK_LValue : VK_XValue; 3264906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 326520093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 3266569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool NewObjCConversion = false; 3267f85e193739c953358c865005855253af4f68a497John McCall bool NewObjCLifetimeConversion = false; 326820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 3269dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi = S.CompareReferenceRelationship(DeclLoc, T1, 32706398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context), 3271f85e193739c953358c865005855253af4f68a497John McCall NewDerivedToBase, NewObjCConversion, 3272f85e193739c953358c865005855253af4f68a497John McCall NewObjCLifetimeConversion); 3273a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 3274a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 3275a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 3276a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 3277a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 3278a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 3279a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 3280a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 3281a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 3282a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 3283a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 328420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 328520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 3286dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi T2.getNonReferenceType().getQualifiers()), 32875baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK); 3288569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (NewObjCConversion) 3289569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3290569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, 3291569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T2.getNonReferenceType().getQualifiers())); 3292569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 329320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 32945baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK); 3295dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 329620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 329720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 329820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 3299dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 330083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 330183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 330283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr); 330383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 3304dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Attempt reference initialization (C++0x [dcl.init.ref]) 3305dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryReferenceInitialization(Sema &S, 330620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 330720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 330820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 330920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3310d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 331120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 33125535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 33135535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 331420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 33155535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 33165535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 33174680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 331820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 331920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 332020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 332113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 332213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 332313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 332413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 332513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Delegate everything else to a subfunction. 332613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 332713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 332813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 33294680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 333013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Reference initialization without resolving overloaded functions. 333113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 333213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 333313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 333413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 333513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 333613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 333713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 333813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 333913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 334013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 334113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 334220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 334320093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 334420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 334520093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 3346569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion = false; 3347f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion = false; 33484680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Expr::Classification InitCategory = Initializer->Classify(S.Context); 334920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 3350569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase, 3351f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, ObjCLifetimeConversion); 33524680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 335320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 3354dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // A reference to type "cv1 T1" is initialized by an expression of type 335520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 335620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3357dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the reference is an lvalue reference and the initializer 335820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 33594680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // Note the analogous bullet points for rvlaue refs to functions. Because 33604680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // there are no function rvalues in C++, rvalue refs to functions are treated 33614680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // like lvalue refs. 336220093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 33634680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl bool T1Function = T1->isFunctionType(); 33644680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (isLValueRef || T1Function) { 3365dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (InitCategory.isLValue() && 336614d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3367dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 336814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related))) { 3369dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - is an lvalue (but is not a bit-field), and "cv1 T1" is 337020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 337120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3372dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 337320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 3374de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 3375de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 3376de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 337720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 337820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 3379dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Context.getQualifiedType(T1, T2Quals), 33805baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue); 3381569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 3382569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3383569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3384569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 33855535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 33865baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK_LValue); 3387de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 3388093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 3389de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 339020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 339120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3392dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3393dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3394dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3395dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 3396dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // with "cv3 T3" (this conversion is selected by enumerating the 339720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 339820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 33994680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // If we have an rvalue ref to function type here, the rhs must be 34004680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // an rvalue. 34014680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && 34024680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isLValueRef || InitCategory.isRValue())) { 3403dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 340420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 34054680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl /*AllowRValues=*/isRValueRef, 340620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 340720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 340820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 34091d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 34101d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 34111d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 34121d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 34131d31833450e6d2947a33cb0840d87661d92eec07John McCall } 341420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 341520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34164680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3417dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, the reference shall be an lvalue reference to a 341820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 341969d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // shall be an rvalue reference. 3420b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor if (isLValueRef && !(T1Quals.hasConst() && !T1Quals.hasVolatile())) { 34213afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 34223afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 34233afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 342420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 342520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 342620093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3427b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor else 34284680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Sequence.SetFailed(InitCategory.isLValue() 342920093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 343020093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 343120093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 343220093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 34334680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 343420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 343520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34364680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3437c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - If the initializer expression 3438c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - is an xvalue, class prvalue, array prvalue, or function lvalue and 3439c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // "cv1 T1" is reference-compatible with "cv2 T2" 3440c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // Note: functions are handled below. 3441c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (!T1Function && 344214d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3443dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 344414d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related)) && 3445c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isXValue() || 3446c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isRecordType()) || 3447c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isArrayType()))) { 3448c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ExprValueKind ValueKind = InitCategory.isXValue()? VK_XValue : VK_RValue; 3449c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (InitCategory.isPRValue() && T2->isRecordType()) { 3450523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 3451523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 3452523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 3453523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 3454523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 3455523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 3456523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 3457523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 3458523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 34594e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x && !S.getLangOpts().MicrosoftExt) 3460523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 34614e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (S.getLangOpts().CPlusPlus0x) 346283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CheckCXX98CompatAccessibleCopy(S, Entity, Initializer); 346320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3464dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3465c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (DerivedToBase) 3466c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddDerivedToBaseCastStep(S.Context.getQualifiedType(T1, T2Quals), 3467c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ValueKind); 3468c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor else if (ObjCConversion) 3469c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddObjCObjectConversionStep( 3470c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3471dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3472c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T1Quals != T2Quals) 3473c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddQualificationConversionStep(cv1T1, ValueKind); 3474dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Sequence.AddReferenceBindingStep(cv1T1, 347565bfd682010f599a9a04fc7523e95e28c27508baPeter Collingbourne /*bindingTemporary=*/InitCategory.isPRValue()); 3476dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return; 3477c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor } 3478dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3479dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3480dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3481c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // xvalue, class prvalue, or function lvalue of type "cv3 T3", 3482c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // where "cv1 T1" is reference-compatible with "cv3 T3", 3483c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T2->isRecordType()) { 348420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 348520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 348620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 348720093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 348820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 348920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 349020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 349120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 349220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3493dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 349420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 349520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3496dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 349720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 349820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 349920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 35000099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi 35010099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // - Otherwise, a temporary of type "cv1 T1" is created and initialized 350220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 3503dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy initialization (8.5). The reference is then bound to the 350420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 3505369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 350620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 350720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 3508168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3509369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3510369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 3511369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3512f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 3513f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, TempEntity.getType(), 3514369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ false, 3515369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicit, 351614d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*FIXME:InOverloadResolution=*/false, 3517f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 3518f85e193739c953358c865005855253af4f68a497John McCall /*AllowObjCWritebackConversion=*/false); 3519f85e193739c953358c865005855253af4f68a497John McCall 3520f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isBad()) { 352120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 352220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 352320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 352420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 352518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 352618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 352718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 352818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 35293afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 35303afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 353118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 353218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 353320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 3534f85e193739c953358c865005855253af4f68a497John McCall } else { 3535f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, TempEntity.getType()); 353620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 353720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 353820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 353920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 354020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 35415535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 35425535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 3543dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship == Sema::Ref_Related && 35445535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 354520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 354620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 354720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 354820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3549dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // [...] If T1 is reference-related to T2 and the reference is an rvalue 3550b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor // reference, the initializer expression shall not be an lvalue. 3551dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship >= Sema::Ref_Related && !isLValueRef && 3552b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitCategory.isLValue()) { 3553b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor Sequence.SetFailed( 3554b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 3555b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor return; 3556b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor } 3557dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 355820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 355920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 356020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 356120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 356220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 3563dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// (C++ [dcl.init.string], C99 6.7.8). 3564dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryStringLiteralInitialization(Sema &S, 356520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 356620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 356720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 356820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3569d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 357020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 357120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 357271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 3573dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryValueInitialization(Sema &S, 357471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 357571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 3576f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitializationSequence &Sequence, 3577f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith InitListExpr *InitList) { 3578f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith assert((!InitList || InitList->getNumInits() == 0) && 3579f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith "Shouldn't use value-init for non-empty init lists"); 3580f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 35811d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++98 [dcl.init]p5, C++11 [dcl.init]p7: 358271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 358371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 3584d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 3585dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 358671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 35871d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith T = S.Context.getBaseElementType(T); 3588dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 358971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 359071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 3591f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith bool NeedZeroInitialization = true; 35924e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus0x) { 3593f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // C++98: 3594f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // -- if T is a class type (clause 9) with a user-declared constructor 3595f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // (12.1), then the default constructor for T is called (and the 3596f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // initialization is ill-formed if T has no accessible default 3597f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // constructor); 35981d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (ClassDecl->hasUserDeclaredConstructor()) 3599f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith NeedZeroInitialization = false; 36001d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith } else { 36011d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // C++11: 36021d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // -- if T is a class type (clause 9) with either no default constructor 36031d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // (12.1 [class.ctor]) or a default constructor that is user-provided 36041d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // or deleted, then the object is default-initialized; 36051d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith CXXConstructorDecl *CD = S.LookupDefaultConstructor(ClassDecl); 36061d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith if (!CD || !CD->getCanonicalDecl()->isDefaulted() || CD->isDeleted()) 3607f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith NeedZeroInitialization = false; 36081d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith } 3609dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36101d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // -- if T is a (possibly cv-qualified) non-union class type without a 36111d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // user-provided or deleted default constructor, then the object is 36121d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // zero-initialized and, if T has a non-trivial default constructor, 36131d0c9a8d0573d1f670f484cc17aa94f06be971a5Richard Smith // default-initialized; 36146678a05ba19c40d60ed68b37262942eb887be217Richard Smith // The 'non-union' here was removed by DR1502. The 'non-trivial default 36156678a05ba19c40d60ed68b37262942eb887be217Richard Smith // constructor' part was removed by DR1507. 3616f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith if (NeedZeroInitialization) 3617f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence.AddZeroInitializationStep(Entity.getType()); 3618f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3619f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // If this is list-value-initialization, pass the empty init list on when 3620f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // building the constructor call. This affects the semantics of a few 3621f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // things (such as whether an explicit default constructor can be called). 3622f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Expr *InitListAsExpr = InitList; 3623f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Expr **Args = InitList ? &InitListAsExpr : 0; 3624f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith unsigned NumArgs = InitList ? 1 : 0; 3625f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith bool InitListSyntax = InitList; 3626f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith 3627f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith return TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, T, 3628f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith Sequence, InitListSyntax); 362971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 363071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 363171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 3632d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 363371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 363471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 363599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 363699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 363799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 363899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 363999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 364099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 3641dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 364299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 364399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 364499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 3645f85e193739c953358c865005855253af4f68a497John McCall QualType DestType = S.Context.getBaseElementType(Entity.getType()); 3646f85e193739c953358c865005855253af4f68a497John McCall 364799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 364899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 364999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 36504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (DestType->isRecordType() && S.getLangOpts().CPlusPlus) { 36514e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, Sequence); 36524e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth return; 365399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 3654dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 365599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 3656dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 365799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 3658dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // a const-qualified type T, T shall be a class type with a user-provided 365999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 36604e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (DestType.isConstQualified() && S.getLangOpts().CPlusPlus) { 366199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 3662f85e193739c953358c865005855253af4f68a497John McCall return; 3663f85e193739c953358c865005855253af4f68a497John McCall } 3664f85e193739c953358c865005855253af4f68a497John McCall 3665f85e193739c953358c865005855253af4f68a497John McCall // If the destination type has a lifetime property, zero-initialize it. 3666f85e193739c953358c865005855253af4f68a497John McCall if (DestType.getQualifiers().hasObjCLifetime()) { 3667f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddZeroInitializationStep(Entity.getType()); 3668f85e193739c953358c865005855253af4f68a497John McCall return; 3669f85e193739c953358c865005855253af4f68a497John McCall } 367099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 367199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 367220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 367320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 367420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 3675dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryUserDefinedConversion(Sema &S, 367620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 367720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 367820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 367920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3680d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 36814a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 36824a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 36834a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 36844a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 3685dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36864a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 36874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 36884a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 36894a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 3690dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 36924a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 3693168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool AllowExplicit = Kind.AllowExplicit(); 3694dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 36954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 36964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 36974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 36984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 36994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 3700dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3701087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Try to complete the type we're converting to. 3702dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (!S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 37033d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie DeclContext::lookup_iterator ConOrig, ConEndOrig; 37043d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie llvm::tie(ConOrig, ConEndOrig) = S.LookupConstructors(DestRecordDecl); 37053d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie // The container holding the constructors can under certain conditions 37063d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie // be changed while iterating. To be safe we copy the lookup results 37073d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie // to a new container. 37083d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie SmallVector<NamedDecl*, 8> CopyOfCon(ConOrig, ConEndOrig); 37093d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie for (SmallVector<NamedDecl*, 8>::iterator 37103d5cf5e0483f538c27016ef3e064536058d5605eDavid Blaikie Con = CopyOfCon.begin(), ConEnd = CopyOfCon.end(); 3711087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Con != ConEnd; ++Con) { 3712087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor NamedDecl *D = *Con; 3713087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 3714dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3715087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Find the constructor (which may be a template). 3716087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor CXXConstructorDecl *Constructor = 0; 3717087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor FunctionTemplateDecl *ConstructorTmpl 3718087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor = dyn_cast<FunctionTemplateDecl>(D); 37194a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 3720087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>( 3721087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 37224712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor else 3723087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>(D); 3724dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3725087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!Constructor->isInvalidDecl() && 3726087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 3727087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (ConstructorTmpl) 3728087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 3729087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor /*ExplicitArgs*/ 0, 373013a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 37314712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3732087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor else 3733087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 373413a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Initializer, CandidateSet, 37354712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3736087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 3737dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 3738087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 37394a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3740cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3741cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 3742cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 37434a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 37444a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 37454a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 3746cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 374733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 374833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 374933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 375033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 375133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 3752dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3753eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 375433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 3755eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3756dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi E = Conversions->end(); 375733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 375833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 375933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 376033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 376133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3762dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 376333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 376433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 37654a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 376633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 37674a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 376832daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 3769dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 377033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 377133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 37729aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 377386820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 377433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 377533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 37769aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 377786820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 377833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 37794a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37804a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37814a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3782dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3783dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 37844a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 37851d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 37868fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) { 37874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 3788dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializationSequence::FK_UserConversionOverloadFailed, 37894a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 37904a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 37914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37921d31833450e6d2947a33cb0840d87661d92eec07John McCall 37934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 37945f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(DeclLoc, Function); 379522c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 3796dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 37984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 3799f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // subsumed by the initialization. Per DR5, the created temporary is of the 3800f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // cv-unqualified type of the destination. 3801f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith Sequence.AddUserConversionStep(Function, Best->FoundDecl, 3802f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith DestType.getUnqualifiedType(), 380322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 38054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 38064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 38074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 38085291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor QualType ConvType = Function->getCallResultType(); 38093fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 3810f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // If we're converting to a class type, there may be an copy of 38113fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 38123fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 38133fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 38143fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 38153fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 381622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType, 381722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38183fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 38193fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 38204a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 382122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType, 382222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 3823dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38243fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 38253fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 38264a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 38274a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 38284a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 38291d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 38304a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 38314a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 38324a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 383320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 383420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3835f85e193739c953358c865005855253af4f68a497John McCall/// The non-zero enum values here are indexes into diagnostic alternatives. 3836f85e193739c953358c865005855253af4f68a497John McCallenum InvalidICRKind { IIK_okay, IIK_nonlocal, IIK_nonscalar }; 3837f85e193739c953358c865005855253af4f68a497John McCall 3838f85e193739c953358c865005855253af4f68a497John McCall/// Determines whether this expression is an acceptable ICR source. 3839c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCallstatic InvalidICRKind isInvalidICRSource(ASTContext &C, Expr *e, 3840c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall bool isAddressOf) { 3841f85e193739c953358c865005855253af4f68a497John McCall // Skip parens. 3842f85e193739c953358c865005855253af4f68a497John McCall e = e->IgnoreParens(); 3843f85e193739c953358c865005855253af4f68a497John McCall 3844f85e193739c953358c865005855253af4f68a497John McCall // Skip address-of nodes. 3845f85e193739c953358c865005855253af4f68a497John McCall if (UnaryOperator *op = dyn_cast<UnaryOperator>(e)) { 3846f85e193739c953358c865005855253af4f68a497John McCall if (op->getOpcode() == UO_AddrOf) 3847c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, op->getSubExpr(), /*addressof*/ true); 3848f85e193739c953358c865005855253af4f68a497John McCall 3849f85e193739c953358c865005855253af4f68a497John McCall // Skip certain casts. 3850c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } else if (CastExpr *ce = dyn_cast<CastExpr>(e)) { 3851c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall switch (ce->getCastKind()) { 3852f85e193739c953358c865005855253af4f68a497John McCall case CK_Dependent: 3853f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 3854f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueBitCast: 3855f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 3856c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, ce->getSubExpr(), isAddressOf); 3857f85e193739c953358c865005855253af4f68a497John McCall 3858f85e193739c953358c865005855253af4f68a497John McCall case CK_ArrayToPointerDecay: 3859f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3860f85e193739c953358c865005855253af4f68a497John McCall 3861f85e193739c953358c865005855253af4f68a497John McCall case CK_NullToPointer: 3862f85e193739c953358c865005855253af4f68a497John McCall return IIK_okay; 3863f85e193739c953358c865005855253af4f68a497John McCall 3864f85e193739c953358c865005855253af4f68a497John McCall default: 3865f85e193739c953358c865005855253af4f68a497John McCall break; 3866f85e193739c953358c865005855253af4f68a497John McCall } 3867f85e193739c953358c865005855253af4f68a497John McCall 3868f85e193739c953358c865005855253af4f68a497John McCall // If we have a declaration reference, it had better be a local variable. 3869f4b88a45902af1802a1cb42ba48b1c474474f228John McCall } else if (isa<DeclRefExpr>(e)) { 3870c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (!isAddressOf) return IIK_nonlocal; 3871c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3872f4b88a45902af1802a1cb42ba48b1c474474f228John McCall VarDecl *var = dyn_cast<VarDecl>(cast<DeclRefExpr>(e)->getDecl()); 3873f4b88a45902af1802a1cb42ba48b1c474474f228John McCall if (!var) return IIK_nonlocal; 3874c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3875c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return (var->hasLocalStorage() ? IIK_okay : IIK_nonlocal); 3876f85e193739c953358c865005855253af4f68a497John McCall 3877f85e193739c953358c865005855253af4f68a497John McCall // If we have a conditional operator, check both sides. 3878f85e193739c953358c865005855253af4f68a497John McCall } else if (ConditionalOperator *cond = dyn_cast<ConditionalOperator>(e)) { 3879c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (InvalidICRKind iik = isInvalidICRSource(C, cond->getLHS(), isAddressOf)) 3880f85e193739c953358c865005855253af4f68a497John McCall return iik; 3881f85e193739c953358c865005855253af4f68a497John McCall 3882c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, cond->getRHS(), isAddressOf); 3883f85e193739c953358c865005855253af4f68a497John McCall 3884f85e193739c953358c865005855253af4f68a497John McCall // These are never scalar. 3885f85e193739c953358c865005855253af4f68a497John McCall } else if (isa<ArraySubscriptExpr>(e)) { 3886f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3887f85e193739c953358c865005855253af4f68a497John McCall 3888f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, it needs to be a null pointer constant. 3889f85e193739c953358c865005855253af4f68a497John McCall } else { 3890f85e193739c953358c865005855253af4f68a497John McCall return (e->isNullPointerConstant(C, Expr::NPC_ValueDependentIsNull) 3891f85e193739c953358c865005855253af4f68a497John McCall ? IIK_okay : IIK_nonlocal); 3892f85e193739c953358c865005855253af4f68a497John McCall } 3893f85e193739c953358c865005855253af4f68a497John McCall 3894f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonlocal; 3895f85e193739c953358c865005855253af4f68a497John McCall} 3896f85e193739c953358c865005855253af4f68a497John McCall 3897f85e193739c953358c865005855253af4f68a497John McCall/// Check whether the given expression is a valid operand for an 3898f85e193739c953358c865005855253af4f68a497John McCall/// indirect copy/restore. 3899f85e193739c953358c865005855253af4f68a497John McCallstatic void checkIndirectCopyRestoreSource(Sema &S, Expr *src) { 3900f85e193739c953358c865005855253af4f68a497John McCall assert(src->isRValue()); 3901f85e193739c953358c865005855253af4f68a497John McCall 3902c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall InvalidICRKind iik = isInvalidICRSource(S.Context, src, false); 3903f85e193739c953358c865005855253af4f68a497John McCall if (iik == IIK_okay) return; 3904f85e193739c953358c865005855253af4f68a497John McCall 3905f85e193739c953358c865005855253af4f68a497John McCall S.Diag(src->getExprLoc(), diag::err_arc_nonlocal_writeback) 3906f85e193739c953358c865005855253af4f68a497John McCall << ((unsigned) iik - 1) // shift index into diagnostic explanations 3907f85e193739c953358c865005855253af4f68a497John McCall << src->getSourceRange(); 3908f85e193739c953358c865005855253af4f68a497John McCall} 3909f85e193739c953358c865005855253af4f68a497John McCall 3910cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// \brief Determine whether we have compatible array types for the 3911cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// purposes of GNU by-copy array initialization. 3912cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorstatic bool hasCompatibleArrayTypes(ASTContext &Context, 3913cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Dest, 3914cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Source) { 3915cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the source and destination array types are equivalent, we're 3916cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // done. 3917cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Context.hasSameType(QualType(Dest, 0), QualType(Source, 0))) 3918cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return true; 3919cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3920cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Make sure that the element types are the same. 3921cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!Context.hasSameType(Dest->getElementType(), Source->getElementType())) 3922cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return false; 3923cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3924cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // The only mismatch we allow is when the destination is an 3925cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // incomplete array type and the source is a constant array type. 3926cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return Source->isConstantArrayType() && Dest->isIncompleteArrayType(); 3927cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 3928cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3929f85e193739c953358c865005855253af4f68a497John McCallstatic bool tryObjCWritebackConversion(Sema &S, 3930f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 3931f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity, 3932f85e193739c953358c865005855253af4f68a497John McCall Expr *Initializer) { 3933f85e193739c953358c865005855253af4f68a497John McCall bool ArrayDecay = false; 3934f85e193739c953358c865005855253af4f68a497John McCall QualType ArgType = Initializer->getType(); 3935f85e193739c953358c865005855253af4f68a497John McCall QualType ArgPointee; 3936f85e193739c953358c865005855253af4f68a497John McCall if (const ArrayType *ArgArrayType = S.Context.getAsArrayType(ArgType)) { 3937f85e193739c953358c865005855253af4f68a497John McCall ArrayDecay = true; 3938f85e193739c953358c865005855253af4f68a497John McCall ArgPointee = ArgArrayType->getElementType(); 3939f85e193739c953358c865005855253af4f68a497John McCall ArgType = S.Context.getPointerType(ArgPointee); 3940f85e193739c953358c865005855253af4f68a497John McCall } 3941f85e193739c953358c865005855253af4f68a497John McCall 3942f85e193739c953358c865005855253af4f68a497John McCall // Handle write-back conversion. 3943f85e193739c953358c865005855253af4f68a497John McCall QualType ConvertedArgType; 3944f85e193739c953358c865005855253af4f68a497John McCall if (!S.isObjCWritebackConversion(ArgType, Entity.getType(), 3945f85e193739c953358c865005855253af4f68a497John McCall ConvertedArgType)) 3946f85e193739c953358c865005855253af4f68a497John McCall return false; 3947f85e193739c953358c865005855253af4f68a497John McCall 3948f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 3949f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 3950f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 3951f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 3952f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 3953f85e193739c953358c865005855253af4f68a497John McCall 3954f85e193739c953358c865005855253af4f68a497John McCall // Do we need an lvalue conversion? 3955f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay || Initializer->isGLValue()) { 3956f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS; 3957f85e193739c953358c865005855253af4f68a497John McCall ICS.setStandard(); 3958f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.setAsIdentityConversion(); 3959f85e193739c953358c865005855253af4f68a497John McCall 3960f85e193739c953358c865005855253af4f68a497John McCall QualType ResultType; 3961f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay) { 3962f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Array_To_Pointer; 3963f85e193739c953358c865005855253af4f68a497John McCall ResultType = S.Context.getPointerType(ArgPointee); 3964f85e193739c953358c865005855253af4f68a497John McCall } else { 3965f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Lvalue_To_Rvalue; 3966f85e193739c953358c865005855253af4f68a497John McCall ResultType = Initializer->getType().getNonLValueExprType(S.Context); 3967f85e193739c953358c865005855253af4f68a497John McCall } 3968f85e193739c953358c865005855253af4f68a497John McCall 3969f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, ResultType); 3970f85e193739c953358c865005855253af4f68a497John McCall } 3971f85e193739c953358c865005855253af4f68a497John McCall 3972f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 3973f85e193739c953358c865005855253af4f68a497John McCall return true; 3974f85e193739c953358c865005855253af4f68a497John McCall} 3975f85e193739c953358c865005855253af4f68a497John McCall 397620093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 397720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 397820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 397920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 39805769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 39815769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 398212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola ASTContext &Context = S.Context; 3983dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 398420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 3985dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // The semantics of initializers are as follows. The destination type is 3986dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // the type of the object or reference being initialized and the source 398720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 3988dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // defined when the initializer is a braced-init-list or when it is a 398920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 399012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 399120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 399212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola if (DestType->isDependentType() || 399313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles Expr::hasAnyTypeDependentArguments(llvm::makeArrayRef(Args, NumArgs))) { 399420093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 399520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 399620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 399720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 39987491c499e826682e128a400038361ebcbde30eecSebastian Redl // Almost everything is a normal sequence. 39997491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(NormalSequence); 40007491c499e826682e128a400038361ebcbde30eecSebastian Redl 4001241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall for (unsigned I = 0; I != NumArgs; ++I) 400232509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (Args[I]->getType()->isNonOverloadPlaceholderType()) { 40035acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: should we be doing this here? 400432509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall ExprResult result = S.CheckPlaceholderExpr(Args[I]); 400532509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (result.isInvalid()) { 400632509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall SetFailed(FK_PlaceholderType); 400732509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall return; 40085acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 400932509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall Args[I] = result.take(); 4010429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 4011241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall 40125acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 401320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 401420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 401599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 401620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 401720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 401820093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 401920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4020dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 40213a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl // - If the initializer is a (non-parenthesized) braced-init-list, the 40223a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl // object is list-initialized (8.5.4). 40233a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl if (Kind.getKind() != InitializationKind::IK_Direct) { 40243a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 40253a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl TryListInitialization(S, Entity, Kind, InitList, *this); 40263a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl return; 40273a45c0e61dfc19f27b8ebcb15dd70159a36f1f9aSebastian Redl } 402820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4029dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 403020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 403120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 403220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 403320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 403420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 403520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 403620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 403720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 403812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForReference); 403920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 404012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 404120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 404220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4043dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 404420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 404599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 404699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 404712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryValueInitialization(S, Entity, Kind, *this); 404820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 404920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4050dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 405199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 40527663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky if (Kind.getKind() == InitializationKind::IK_Default) { 405312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryDefaultInitialization(S, Entity, Kind, *this); 405499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 405599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 405618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4057ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // - If the destination type is an array of characters, an array of 4058ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // char16_t, an array of char32_t, or an array of wchar_t, and the 4059ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // initializer is a string literal, see 8.5.2. 4060dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the destination type is an array, the program is 406120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 4062cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ArrayType *DestAT = Context.getAsArrayType(DestType)) { 406373076431605556fdbf28d287d084a73a24a8b8d4John McCall if (Initializer && isa<VariableArrayType>(DestAT)) { 406473076431605556fdbf28d287d084a73a24a8b8d4John McCall SetFailed(FK_VariableLengthArrayHasInitializer); 406573076431605556fdbf28d287d084a73a24a8b8d4John McCall return; 406673076431605556fdbf28d287d084a73a24a8b8d4John McCall } 406773076431605556fdbf28d287d084a73a24a8b8d4John McCall 4068cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Initializer && IsStringInit(Initializer, DestAT, Context)) { 406912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 4070ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return; 4071ce6c9b7da219c8640a0559f75770cfc6622de083John McCall } 4072ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 4073cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Note: as an GNU C extension, we allow initialization of an 4074cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // array from a compound literal that creates an array of the same 4075cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type, so long as the initializer has no side effects. 40764e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus && Initializer && 4077cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor isa<CompoundLiteralExpr>(Initializer->IgnoreParens()) && 4078cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Initializer->getType()->isArrayType()) { 4079cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *SourceAT 4080cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = Context.getAsArrayType(Initializer->getType()); 4081cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!hasCompatibleArrayTypes(S.Context, DestAT, SourceAT)) 408212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayTypeMismatch); 4083cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else if (Initializer->HasSideEffects(S.Context)) 408412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_NonConstantArrayInit); 4085cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else { 408612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddArrayInitStep(DestType); 4087cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 40880f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith } 4089f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // Note: as a GNU C++ extension, we allow list-initialization of a 4090f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith // class member of array type from a parenthesized initializer list. 40914e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie else if (S.getLangOpts().CPlusPlus && 40920f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Entity.getKind() == InitializedEntity::EK_Member && 40930f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith Initializer && isa<InitListExpr>(Initializer)) { 40940f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith TryListInitialization(S, Entity, Kind, cast<InitListExpr>(Initializer), 40950f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith *this); 40960f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith AddParenthesizedArrayInitStep(DestType); 4097cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } else if (DestAT->getElementType()->isAnyCharacterType()) 409812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 409920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 410012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitList); 4101dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 410220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 410320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4104cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 4105f85e193739c953358c865005855253af4f68a497John McCall // Determine whether we should consider writeback conversions for 4106f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC. 41074e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie bool allowObjCWritebackConversion = S.getLangOpts().ObjCAutoRefCount && 4108f85e193739c953358c865005855253af4f68a497John McCall Entity.getKind() == InitializedEntity::EK_Parameter; 4109f85e193739c953358c865005855253af4f68a497John McCall 4110f85e193739c953358c865005855253af4f68a497John McCall // We're at the end of the line for C: it's either a write-back conversion 4111f85e193739c953358c865005855253af4f68a497John McCall // or it's a C assignment. There's no need to check anything else. 41124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().CPlusPlus) { 4113f85e193739c953358c865005855253af4f68a497John McCall // If allowed, check whether this is an Objective-C writeback conversion. 4114f85e193739c953358c865005855253af4f68a497John McCall if (allowObjCWritebackConversion && 411512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola tryObjCWritebackConversion(S, *this, Entity, Initializer)) { 4116f85e193739c953358c865005855253af4f68a497John McCall return; 4117f85e193739c953358c865005855253af4f68a497John McCall } 4118f85e193739c953358c865005855253af4f68a497John McCall 4119f85e193739c953358c865005855253af4f68a497John McCall // Handle initialization in C 412012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddCAssignmentStep(DestType); 412112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 4122cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 4123cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 4124dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 41254e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().CPlusPlus); 4126f85e193739c953358c865005855253af4f68a497John McCall 412720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 412820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 4129dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initialization is direct-initialization, or if it is 4130dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy-initialization where the cv-unqualified version of the 4131dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // source type is the same class as, or a derived class of, the 413220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 413320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 413420093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 413520093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 413620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 4137dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 413812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Entity.getType(), *this); 4139dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise (i.e., for the remaining copy-initialization cases), 414020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 4141dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // type to the destination type or (when a conversion function is 414220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 414320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 414420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 414520093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 414612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 414720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 414820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4149dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 415099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 415112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForScalar); 415299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 415399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 415499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 4155dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4156dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the source type is a (possibly cv-qualified) class 415720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 415899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 415912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 416012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 416120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 416220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4163dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 416420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 41654a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 416620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 4167dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // initializer expression to the cv-unqualified version of the 416820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 4169f85e193739c953358c865005855253af4f68a497John McCall 4170f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 4171f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, Entity.getType(), 4172f85e193739c953358c865005855253af4f68a497John McCall /*SuppressUserConversions*/true, 4173369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*AllowExplicitConversions*/ false, 417414d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*InOverloadResolution*/ false, 4175f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 4176f85e193739c953358c865005855253af4f68a497John McCall allowObjCWritebackConversion); 4177f85e193739c953358c865005855253af4f68a497John McCall 4178f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isStandard() && 4179f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.Second == ICK_Writeback_Conversion) { 4180f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC writeback conversion. 4181f85e193739c953358c865005855253af4f68a497John McCall 4182f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 4183f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 4184f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 4185f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *Param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 4186f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (Param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 4187f85e193739c953358c865005855253af4f68a497John McCall 4188f85e193739c953358c865005855253af4f68a497John McCall // If there was an lvalue adjustment, add it as a separate conversion. 4189f85e193739c953358c865005855253af4f68a497John McCall if (ICS.Standard.First == ICK_Array_To_Pointer || 4190f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First == ICK_Lvalue_To_Rvalue) { 4191f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence LvalueICS; 4192f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.setStandard(); 4193f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAsIdentityConversion(); 4194f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAllToTypes(ICS.Standard.getToType(0)); 4195f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.First = ICS.Standard.First; 419612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(LvalueICS, ICS.Standard.getToType(0)); 4197f85e193739c953358c865005855253af4f68a497John McCall } 419812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 419912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 4200f85e193739c953358c865005855253af4f68a497John McCall } else if (ICS.isBad()) { 42011be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor DeclAccessPair dap; 42021be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor if (Initializer->getType() == Context.OverloadTy && 42031be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor !S.ResolveAddressOfOverloadedFunction(Initializer 42041be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor , DestType, false, dap)) 420512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 42068e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor else 420712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_ConversionFailed); 4208f85e193739c953358c865005855253af4f68a497John McCall } else { 420912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(ICS, Entity.getType()); 4210856d3798af7c2f7251e4a295f3da7a09ce4c62abJohn McCall 421112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 42128e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor } 421320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 421420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 421520093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 42165f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<Step>::iterator Step = Steps.begin(), 421720093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 421820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 421920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 422020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 422120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 422220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 422320093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 422420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 4225dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic Sema::AssignmentAction 422618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 422718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 422818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 422918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 4230a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Exception: 4231a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Base: 4232059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 423318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 423418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 423518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 4236dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (Entity.getDecl() && 4237688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 4238688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 4239688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 424018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 424118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 424218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 424318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 424418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 424518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 424618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 424718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 4248dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 424918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 4250d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 4251d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42520c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4253310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42544773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 425518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 425618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 425718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42587530c034c0c71a64c5a9173206d9742ae847af8bDavid Blaikie llvm_unreachable("Invalid EntityKind!"); 425918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 426018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42614154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 42624154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 42632f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 426418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 42651b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 42661b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 42672f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 426818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 426918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 427018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 4271059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 4272d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42730c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4274a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 4275310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42764773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 427718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 4278dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 427918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 428018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 428118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 428218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 4283dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 428418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 428518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 428618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42874154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 42884154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 42894154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 42904154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 42914154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 42924154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 42934154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 42944154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 4295059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 42964154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 42970c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4298310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 42994773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 43004154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 4301dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 43024154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 43034154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 43044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 43054154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 43064154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 43074154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 43084154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 4309dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4310dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi llvm_unreachable("missed an InitializedEntity kind?"); 43114154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 43124154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 431383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Look for copy and move constructors and constructor templates, for 431483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// copying an object via direct-initialization (per C++11 [dcl.init]p16). 431583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void LookupCopyAndMoveConstructors(Sema &S, 431683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet &CandidateSet, 431783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXRecordDecl *Class, 431883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 431983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclContext::lookup_iterator Con, ConEnd; 432083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith for (llvm::tie(Con, ConEnd) = S.LookupConstructors(Class); 432183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Con != ConEnd; ++Con) { 432283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXConstructorDecl *Constructor = 0; 432383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 432483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if ((Constructor = dyn_cast<CXXConstructorDecl>(*Con))) { 432583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle copy/moveconstructors, only. 432683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor || Constructor->isInvalidDecl() || 432783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isCopyOrMoveConstructor() || 432883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 432983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 433083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 433183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 433283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(Constructor, Constructor->getAccess()); 433383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddOverloadCandidate(Constructor, FoundDecl, 433413a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CurInitExpr, CandidateSet); 433583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 433683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 433783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 433883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle constructor templates. 433983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith FunctionTemplateDecl *ConstructorTmpl = cast<FunctionTemplateDecl>(*Con); 434083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (ConstructorTmpl->isInvalidDecl()) 434183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 434383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Constructor = cast<CXXConstructorDecl>( 434483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith ConstructorTmpl->getTemplatedDecl()); 434583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 434683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 434883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Do we need to limit this to copy-constructor-like 434983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // candidates? 435083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 435183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(ConstructorTmpl, ConstructorTmpl->getAccess()); 435283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 0, 435313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CurInitExpr, CandidateSet, true); 435483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 435583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 435683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 435783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Get the location at which initialization diagnostics should appear. 435883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic SourceLocation getInitializationLoc(const InitializedEntity &Entity, 435983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *Initializer) { 436083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (Entity.getKind()) { 436183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Result: 436283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getReturnLoc(); 436383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 436483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Exception: 436583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getThrowLoc(); 436683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 436783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Variable: 436883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getDecl()->getLocation(); 436983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 43704773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor case InitializedEntity::EK_LambdaCapture: 43714773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor return Entity.getCaptureLoc(); 43724773654f2700d6fbb20612fbb6763b35860fa74dDouglas Gregor 437383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ArrayElement: 437483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Member: 437583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Parameter: 437683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Temporary: 437783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_New: 437883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Base: 437983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Delegating: 438083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_VectorElement: 438183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ComplexElement: 438283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_BlockElement: 438383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Initializer->getLocStart(); 438483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 438583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith llvm_unreachable("missed an InitializedEntity kind?"); 438683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 438783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4388523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 4389523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 4390523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 4391523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4392523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 4393523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 439463e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// \param T The type of the temporary object, which must either be 4395523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 4396523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 43971dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// \param Entity The entity being initialized. 4398523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4399523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 4400523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4401523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 4402523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 4403523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 4404523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4405523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 4406523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 4407523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 440860d7b3a319d84d688752be3870615ac0f111fb16John McCallstatic ExprResult CopyObject(Sema &S, 44098fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor QualType T, 44108fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor const InitializedEntity &Entity, 44118fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor ExprResult CurInit, 44128fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor bool IsExtraneousCopy) { 44133fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 44141b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 4415dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXRecordDecl *Class = 0; 4416523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 44172f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 44182f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 44193fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return CurInit; 44202f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 4421f5d8f466c3eebaffc51468812bdcbe7f0fe4891aDouglas Gregor // C++0x [class.copy]p32: 44222f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 44232f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 44242f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 44252f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 44262f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 44272f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 44282f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 44292f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 44302f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 4431dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // 44322f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 44333c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // elision for return statements and throw expressions are handled as part 4434dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // of constructor initialization, while copy elision for exception handlers 44353c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // is handled by the run-time. 4436558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool Elidable = CurInitExpr->isTemporaryObject(S.Context, Class); 443783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInit.get()); 4438f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4439dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Make sure that the type we are copying is complete. 4440d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (S.RequireCompleteType(Loc, T, diag::err_temp_copy_incomplete)) 44413fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return CurInit; 4442f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4443cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Perform overload resolution using the class's copy/move constructors. 444483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Only consider constructors and constructor templates. Per 444583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // C++0x [dcl.init]p16, second bullet to class types, this initialization 444683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // is direct-initialization. 44475769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 444883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors(S, CandidateSet, Class, CurInitExpr); 4449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 44507cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 44517cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 445218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 445325ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth switch (CandidateSet.BestViableFunction(S, Loc, Best)) { 445418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 445518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4456dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 445718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 445857d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext() 445957d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin ? diag::ext_rvalue_to_reference_temp_copy_no_viable 446057d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin : diag::err_temp_copy_no_viable) 44617abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 446218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 446313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr); 446457d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin if (!IsExtraneousCopy || S.isSFINAEContext()) 4465f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 44663fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return CurInit; 4467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 446818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 446918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 44707abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 447118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 447213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr); 4473f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4474dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 447518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 447618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 44777abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 447818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 44796c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 4480f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 448118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 448218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 44833fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 44844e28d9e2ba9ce237549b45cfd4136ec6536d1325Benjamin Kramer SmallVector<Expr*, 8> ConstructorArgs; 44853fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 4486523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 44879a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 448857d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin Best->FoundDecl.getAccess(), IsExtraneousCopy); 4489523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4490523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 4491523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 4492523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 44932559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 44942559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 44952559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 44962559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 44972559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 44982559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 44992559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 45002559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 45012559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 45022559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 45032559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 4504d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor diag::err_call_incomplete_argument)) 45052559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 45062559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 45072559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 45082559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 45092559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 45102559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 45112559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 4512523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4513523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 4514523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 4515dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 45165f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(Loc, Constructor); 451725ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 45183fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 4519523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 4520523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 4521f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall if (S.CompleteConstructorCall(Constructor, MultiExprArg(&CurInitExpr, 1), 45223fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 4523f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 45243fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 4525b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // Actually perform the constructor call. 4526b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 45273fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer ConstructorArgs, 45287cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 45297a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 4530428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 4531428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 4532dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4533b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // If we're supposed to bind temporaries, do so. 4534b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) 4535b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 45363fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return CurInit; 453718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 453820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 453983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Check whether elidable copy construction for binding a reference to 454083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// a temporary would have succeeded if we were building in C++98 mode, for 454183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// -Wc++98-compat. 454283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 454383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 454483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 45454e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().CPlusPlus0x); 454683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 454783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const RecordType *Record = CurInitExpr->getType()->getAs<RecordType>(); 454883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Record) 454983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 455083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 455183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInitExpr); 455283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (S.Diags.getDiagnosticLevel(diag::warn_cxx98_compat_temp_copy, Loc) 455383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith == DiagnosticsEngine::Ignored) 455483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 455583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 455683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Find constructors which would have been considered. 455783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet CandidateSet(Loc); 455883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors( 455983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S, CandidateSet, cast<CXXRecordDecl>(Record->getDecl()), CurInitExpr); 456083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Perform overload resolution. 456283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet::iterator Best; 456383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadingResult OR = CandidateSet.BestViableFunction(S, Loc, Best); 456483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith PartialDiagnostic Diag = S.PDiag(diag::warn_cxx98_compat_temp_copy) 456683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << OR << (int)Entity.getKind() << CurInitExpr->getType() 456783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << CurInitExpr->getSourceRange(); 456883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (OR) { 457083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Success: 457183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.CheckConstructorAccess(Loc, cast<CXXConstructorDecl>(Best->Function), 4572b9abd87283ac6e929b7e12a577663bc99e61d020John McCall Entity, Best->FoundDecl.getAccess(), Diag); 457383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Check default arguments as far as that's possible. 457483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 457583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_No_Viable_Function: 457783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 457813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_AllCandidates, CurInitExpr); 457983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 458083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Ambiguous: 458283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 458313a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles CandidateSet.NoteCandidates(S, OCD_ViableCandidates, CurInitExpr); 458483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 458583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Deleted: 458783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 45886c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 458983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 459083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 459183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 459283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4593a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 4594a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 4595a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 4596a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 4597a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 4598a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 4599a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 4600a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 4601a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 4602a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 4603a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 4604a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 4605a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 4606a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 46073b80232b50c29b245e674f5aa02047b408e41018Sebastian Redlstatic bool isReferenceBinding(const InitializationSequence::Step &s) { 46083b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return s.Kind == InitializationSequence::SK_BindReference || 46093b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl s.Kind == InitializationSequence::SK_BindReferenceToTemporary; 46103b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl} 46113b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl 461210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic ExprResult 461310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian RedlPerformConstructorInitialization(Sema &S, 461410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 461510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 461610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Args, 461710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationSequence::Step& Step, 461810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool &ConstructorInitRequiresZeroInit) { 461910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumArgs = Args.size(); 462010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructorDecl *Constructor 462110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXConstructorDecl>(Step.Function.Function); 462210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = Step.Function.HadMultipleCandidates; 462310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 462410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Build a call to the selected constructor. 46254e28d9e2ba9ce237549b45cfd4136ec6536d1325Benjamin Kramer SmallVector<Expr*, 8> ConstructorArgs; 462610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) 462710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ? Kind.getEqualLoc() 462810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl : Kind.getLocation(); 462910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 463010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default) { 463110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Force even a trivial, implicit default constructor to be 463210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // semantically checked. We do this explicitly because we don't build 463310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // the definition for completely trivial constructors. 463428e4702a1f978213ff945fe4369e3be7444bf320Matt Beaumont-Gay assert(Constructor->getParent() && "No parent class for constructor."); 463510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Constructor->isDefaulted() && Constructor->isDefaultConstructor() && 46365d86f61b9c54429fc3f9149fc0f7009010a644a1Douglas Gregor Constructor->isTrivial() && !Constructor->isUsed(false)) 463710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DefineImplicitDefaultConstructor(Loc, Constructor); 463810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 463910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 464010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ExprResult CurInit = S.Owned((Expr *)0); 464110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 4642ed878af7914df535b32d64f555fa118413186672Douglas Gregor // C++ [over.match.copy]p1: 4643ed878af7914df535b32d64f555fa118413186672Douglas Gregor // - When initializing a temporary to be bound to the first parameter 4644ed878af7914df535b32d64f555fa118413186672Douglas Gregor // of a constructor that takes a reference to possibly cv-qualified 4645ed878af7914df535b32d64f555fa118413186672Douglas Gregor // T as its first argument, called with a single argument in the 4646ed878af7914df535b32d64f555fa118413186672Douglas Gregor // context of direct-initialization, explicit conversion functions 4647ed878af7914df535b32d64f555fa118413186672Douglas Gregor // are also considered. 4648ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicitConv = Kind.AllowExplicit() && !Kind.isCopyInit() && 4649ed878af7914df535b32d64f555fa118413186672Douglas Gregor Args.size() == 1 && 4650ed878af7914df535b32d64f555fa118413186672Douglas Gregor Constructor->isCopyOrMoveConstructor(); 4651ed878af7914df535b32d64f555fa118413186672Douglas Gregor 465210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Determine the arguments required to actually perform the constructor 465310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // call. 46543fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer if (S.CompleteConstructorCall(Constructor, Args, 4655ed878af7914df535b32d64f555fa118413186672Douglas Gregor Loc, ConstructorArgs, 4656ed878af7914df535b32d64f555fa118413186672Douglas Gregor AllowExplicitConv)) 465710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 465810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 466010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Temporary && 4661188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (Kind.getKind() == InitializationKind::IK_DirectList || 4662188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (NumArgs != 1 && // FIXME: Hack to work around cast weirdness 4663188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl (Kind.getKind() == InitializationKind::IK_Direct || 4664188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl Kind.getKind() == InitializationKind::IK_Value)))) { 466510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // An explicitly-constructed temporary, e.g., X(1, 2). 46665f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(Loc, Constructor); 466710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Constructor, Loc); 466810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 466910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 467010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!TSInfo) 467110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo = S.Context.getTrivialTypeSourceInfo(Entity.getType(), Loc); 4672188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl SourceRange ParenRange; 4673188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl if (Kind.getKind() != InitializationKind::IK_DirectList) 4674188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl ParenRange = Kind.getParenRange(); 467510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 467610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 467710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 467810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo, 46793b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer ConstructorArgs, 4680188158db29f50443b6e412f2a40c800b2669c957Sebastian Redl ParenRange, 468110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 468210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit)); 468310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else { 468410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::ConstructionKind ConstructKind = 468510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_Complete; 468610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 468710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Base) { 468810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? 468910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_VirtualBase : 469010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_NonVirtualBase; 469110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else if (Entity.getKind() == InitializedEntity::EK_Delegating) { 469210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = CXXConstructExpr::CK_Delegating; 469310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 469410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 469510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only get the parenthesis range if it is a direct construction. 469610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceRange parenRange = 469710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Direct ? 469810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getParenRange() : SourceRange(); 469910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 470010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If the entity allows NRVO, mark the construction as elidable 470110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // unconditionally. 470210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.allowsNRVO()) 470310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 470410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, /*Elidable=*/true, 47053fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer ConstructorArgs, 470610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 470710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 470810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 470910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 471010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 471110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 471210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 47133fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer ConstructorArgs, 471410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 471510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 471610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 471710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 471810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 471910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (CurInit.isInvalid()) 472010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 472110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 472210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only check access if all of that succeeded. 472310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckConstructorAccess(Loc, Constructor, Entity, 472410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Step.Function.FoundDecl.getAccess()); 472510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Step.Function.FoundDecl, Loc); 472610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 472710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (shouldBindAsTemporary(Entity)) 472810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 472910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 47303fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return CurInit; 473110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 473210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 473336d02af300a207242f0486b4255420d8be796b21Richard Smith/// Determine whether the specified InitializedEntity definitely has a lifetime 473436d02af300a207242f0486b4255420d8be796b21Richard Smith/// longer than the current full-expression. Conservatively returns false if 473536d02af300a207242f0486b4255420d8be796b21Richard Smith/// it's unclear. 473636d02af300a207242f0486b4255420d8be796b21Richard Smithstatic bool 473736d02af300a207242f0486b4255420d8be796b21Richard SmithInitializedEntityOutlivesFullExpression(const InitializedEntity &Entity) { 473836d02af300a207242f0486b4255420d8be796b21Richard Smith const InitializedEntity *Top = &Entity; 473936d02af300a207242f0486b4255420d8be796b21Richard Smith while (Top->getParent()) 474036d02af300a207242f0486b4255420d8be796b21Richard Smith Top = Top->getParent(); 474136d02af300a207242f0486b4255420d8be796b21Richard Smith 474236d02af300a207242f0486b4255420d8be796b21Richard Smith switch (Top->getKind()) { 474336d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Variable: 474436d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Result: 474536d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Exception: 474636d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Member: 474736d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_New: 474836d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Base: 474936d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Delegating: 475036d02af300a207242f0486b4255420d8be796b21Richard Smith return true; 475136d02af300a207242f0486b4255420d8be796b21Richard Smith 475236d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_ArrayElement: 475336d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_VectorElement: 475436d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_BlockElement: 475536d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_ComplexElement: 475636d02af300a207242f0486b4255420d8be796b21Richard Smith // Could not determine what the full initialization is. Assume it might not 475736d02af300a207242f0486b4255420d8be796b21Richard Smith // outlive the full-expression. 475836d02af300a207242f0486b4255420d8be796b21Richard Smith return false; 475936d02af300a207242f0486b4255420d8be796b21Richard Smith 476036d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Parameter: 476136d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_Temporary: 476236d02af300a207242f0486b4255420d8be796b21Richard Smith case InitializedEntity::EK_LambdaCapture: 476336d02af300a207242f0486b4255420d8be796b21Richard Smith // The entity being initialized might not outlive the full-expression. 476436d02af300a207242f0486b4255420d8be796b21Richard Smith return false; 476536d02af300a207242f0486b4255420d8be796b21Richard Smith } 476636d02af300a207242f0486b4255420d8be796b21Richard Smith 476736d02af300a207242f0486b4255420d8be796b21Richard Smith llvm_unreachable("unknown entity kind"); 476836d02af300a207242f0486b4255420d8be796b21Richard Smith} 476936d02af300a207242f0486b4255420d8be796b21Richard Smith 4770dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 477120093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 477220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 477320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 4774f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiExprArg Args, 4775d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 4776d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (Failed()) { 477720093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 47785354e77e60e82828c7c2361f5c688c2667ab59ccBenjamin Kramer Diagnose(S, Entity, Kind, Args.data(), NumArgs); 4779f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 478020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4781dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 47827491c499e826682e128a400038361ebcbde30eecSebastian Redl if (getKind() == DependentSequence) { 4783d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 4784d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 4785d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 4786d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 4787d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 4788d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 4789d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 4790d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 4791d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 4792d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 4793d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 4794d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 4795d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 4796d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 4797d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 47983fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer if (isa<InitListExpr>((Expr *)Args[0])) { 4799d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 4800d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 4801d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 4802d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 4803d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 4804d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 4805d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 4806d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 4807d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 4808d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 4809d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4810d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4811d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 4812d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 4813d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 4814d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 4815d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 4816d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 4817d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4818d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4819d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4820d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 48215b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl if (Kind.getKind() == InitializationKind::IK_Direct && 48225b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl !Kind.isExplicitCast()) { 48235b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl // Rebuild the ParenListExpr. 48245b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl SourceRange ParenRange = Kind.getParenRange(); 48255b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl return S.ActOnParenListExpr(ParenRange.getBegin(), ParenRange.getEnd(), 48263fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer Args); 48275b9cc5df25c2198f270dd1d5c438fdce70d4051dSebastian Redl } 48280d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek assert(Kind.getKind() == InitializationKind::IK_Copy || 4829a9b55a499a8b5ae0c4b373f751ef62af74ec494eDouglas Gregor Kind.isExplicitCast() || 4830a9b55a499a8b5ae0c4b373f751ef62af74ec494eDouglas Gregor Kind.getKind() == InitializationKind::IK_DirectList); 48313fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return ExprResult(Args[0]); 483220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 483320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 48347491c499e826682e128a400038361ebcbde30eecSebastian Redl // No steps means no initialization. 48357491c499e826682e128a400038361ebcbde30eecSebastian Redl if (Steps.empty()) 483699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 4837dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 483803544fccd1782418c1bf2528111683e18f43b913Richard Smith if (S.getLangOpts().CPlusPlus0x && Entity.getType()->isReferenceType() && 48393fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer Args.size() == 1 && isa<InitListExpr>(Args[0]) && 484003544fccd1782418c1bf2528111683e18f43b913Richard Smith Entity.getKind() != InitializedEntity::EK_Parameter) { 484103544fccd1782418c1bf2528111683e18f43b913Richard Smith // Produce a C++98 compatibility warning if we are initializing a reference 484203544fccd1782418c1bf2528111683e18f43b913Richard Smith // from an initializer list. For parameters, we produce a better warning 484303544fccd1782418c1bf2528111683e18f43b913Richard Smith // elsewhere. 48443fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer Expr *Init = Args[0]; 484503544fccd1782418c1bf2528111683e18f43b913Richard Smith S.Diag(Init->getLocStart(), diag::warn_cxx98_compat_reference_list_init) 484603544fccd1782418c1bf2528111683e18f43b913Richard Smith << Init->getSourceRange(); 484736d02af300a207242f0486b4255420d8be796b21Richard Smith } 484836d02af300a207242f0486b4255420d8be796b21Richard Smith 484936d02af300a207242f0486b4255420d8be796b21Richard Smith // Diagnose cases where we initialize a pointer to an array temporary, and the 485036d02af300a207242f0486b4255420d8be796b21Richard Smith // pointer obviously outlives the temporary. 48513fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer if (Args.size() == 1 && Args[0]->getType()->isArrayType() && 485236d02af300a207242f0486b4255420d8be796b21Richard Smith Entity.getType()->isPointerType() && 485336d02af300a207242f0486b4255420d8be796b21Richard Smith InitializedEntityOutlivesFullExpression(Entity)) { 48543fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer Expr *Init = Args[0]; 485536d02af300a207242f0486b4255420d8be796b21Richard Smith Expr::LValueClassification Kind = Init->ClassifyLValue(S.Context); 485636d02af300a207242f0486b4255420d8be796b21Richard Smith if (Kind == Expr::LV_ClassTemporary || Kind == Expr::LV_ArrayTemporary) 485736d02af300a207242f0486b4255420d8be796b21Richard Smith S.Diag(Init->getLocStart(), diag::warn_temporary_array_to_pointer_decay) 485836d02af300a207242f0486b4255420d8be796b21Richard Smith << Init->getSourceRange(); 485903544fccd1782418c1bf2528111683e18f43b913Richard Smith } 486003544fccd1782418c1bf2528111683e18f43b913Richard Smith 4861d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 4862d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 4863a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 4864a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 4865d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 4866a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 4867d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 486820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 486960d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult CurInit = S.Owned((Expr *)0); 4870dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4871dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // For initialization steps that start with a single initializer, 487299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 487399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 487499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 487518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 487618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 4877906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 487818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 487918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 488018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 4881523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 488218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 488318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 4884906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 488518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 488618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 488718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 488813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 488913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 489018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 4891cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 4892cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ObjCObjectConversion: 4893f85e193739c953358c865005855253af4f68a497John McCall case SK_ArrayInit: 48940f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 4895f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 4896f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 48972b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_ProduceObjCObject: 48982b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: { 489918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 49003fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = Args[0]; 4901429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (!CurInit.get()) return ExprError(); 490218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4903f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall } 4904dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 490518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 4906f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith case SK_ListConstructorCall: 490718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 490818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 490920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4910dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4911dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Walk through the computed steps for the initialization sequence, 491220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 491316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 491420093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 491520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 491620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 4917f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4918dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4919429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get() ? CurInit.get()->getType() : QualType(); 4920dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 492120093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 492220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4923dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Overload resolution determined which function invoke; update the 492420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 4925429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckAddressOfMemberAccess(CurInit.get(), Step->Function.FoundDecl); 4926b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation()); 49273fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = S.FixOverloadedFunctionReference(CurInit, 49286bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 49299aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 493020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4931dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 493220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 4933906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 493420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 493520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 493620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 4937dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4938f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXCastPath BasePath; 49395cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 494020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 494120093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 494220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 4943429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getLocStart(), 4944429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getSourceRange(), 49455cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 4946f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4947dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 49486fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (S.BasePathInvolvesVirtualBase(BasePath)) { 49496fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor QualType T = SourceType; 49506fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const PointerType *Pointer = T->getAs<PointerType>()) 49516fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor T = Pointer->getPointeeType(); 49526fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const RecordType *RecordTy = T->getAs<RecordType>()) 4953429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkVTableUsed(CurInit.get()->getLocStart(), 49546fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor cast<CXXRecordDecl>(RecordTy->getDecl())); 49556fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor } 49566fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 49575baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 4958906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_CastDerivedToBaseLValue ? 49595baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 4960906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_CastDerivedToBaseXValue ? 49615baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 49625baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 4963f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 4964f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Step->Type, 49652de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_DerivedToBase, 49665baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall CurInit.get(), 49675baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall &BasePath, VK)); 496820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 496920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4970dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 497120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 4972429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (FieldDecl *BitField = CurInit.get()->getBitField()) { 497320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 497420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 4975d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 497620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 4977429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 497820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 4979f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 498020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4981a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 4982429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.get()->refersToVectorElement()) { 498341593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 4984093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 4985093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 4986429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 4987a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 4988f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4989093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 4990dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 499120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 499220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 499320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 4994429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 4995f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 49963aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 499720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 49983aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 499920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 500020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 5001429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 5002f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 500320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 500403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor // Materialize the temporary into memory. 5005b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit = new (S.Context) MaterializeTemporaryExpr( 5006b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor Entity.getType().getNonReferenceType(), 5007b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit.get(), 500803e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Entity.getType()->isLValueReferenceType()); 5009d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 5010d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // If we're binding to an Objective-C object that has lifetime, we 5011d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // need cleanups. 50124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ObjCAutoRefCount && 5013d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor CurInit.get()->getType()->isObjCLifetimeType()) 5014d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor S.ExprNeedsCleanups = true; 5015d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 501620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5017dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5018523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 50193fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = CopyObject(S, Step->Type, Entity, CurInit, 5020523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 5021523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 5022523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 502320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 502420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 502520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 5026daa8e4e888758d55a7a759dd4a91b83921cef222John McCall CastKind CastKind; 502718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 50289aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 50299aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 50307cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = Step->Function.HadMultipleCandidates; 50314154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 5032b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 503320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 50344e28d9e2ba9ce237549b45cfd4136ec6536d1325Benjamin Kramer SmallVector<Expr*, 8> ConstructorArgs; 5035429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SourceLocation Loc = CurInit.get()->getLocStart(); 503620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 5037b13b737a2450167c82e148590e8019b839ce6b98John McCall 503820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 503920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 5040429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Expr *Arg = CurInit.get(); 504120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 5042429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley MultiExprArg(&Arg, 1), 504320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 5044f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5045dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5046f2e4dfcd325db2c1a960697be2c750f277dcafceRichard Smith // Build an expression that constructs a temporary. 5047dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 50483fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer ConstructorArgs, 50497cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 50507a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 5051428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 5052428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 505320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 5054f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5055b13b737a2450167c82e148590e8019b839ce6b98John McCall 50569a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 50579aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 5058b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 5059dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50602de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_ConstructorConversion; 506118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 506218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 506318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 506418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 5065dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50664154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 506720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 506820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 5069b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 5070429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckMemberOperatorAccess(Kind.getLocation(), CurInit.get(), 0, 50719aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 5072b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 5073dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5074dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Should we move this initialization into a separate 507520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 507620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 5077429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5078429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformObjectArgumentInitialization(CurInit.take(), /*Qualifier=*/0, 5079429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley FoundFn, Conversion); 5080429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if(CurInitExprRes.isInvalid()) 5081f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 50823fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = CurInitExprRes; 5083dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 508420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 50857cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara CurInit = S.BuildCXXMemberCallExpr(CurInit.get(), FoundFn, Conversion, 50867cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates); 508720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 5088f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5089dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50902de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_UserDefinedConversion; 5091dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50924154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 509320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5094dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50953b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl bool RequiresCopy = !IsCopy && !isReferenceBinding(Steps.back()); 5096960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara bool MaybeBindToTemp = RequiresCopy || shouldBindAsTemporary(Entity); 5097960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara 5098960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (!MaybeBindToTemp && CreatedObject && shouldDestroyTemporary(Entity)) { 5099429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType T = CurInit.get()->getType(); 51004154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 5101dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXDestructorDecl *Destructor 5102db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); 5103429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckDestructorAccess(CurInit.get()->getLocStart(), Destructor, 51044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 51055f2987c11491edb186401d4e8eced275f0ea7c5eEli Friedman S.MarkFunctionReferenced(CurInit.get()->getLocStart(), Destructor); 5106429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.DiagnoseUseOfDecl(Destructor, CurInit.get()->getLocStart()); 51074154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 51084154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 5109dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5110f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 5111429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getType(), 5112429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CastKind, CurInit.get(), 0, 5113104be6fc8de206c9b79b241b36ebaf9407b3be08Eli Friedman CurInit.get()->getValueKind())); 5114960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (MaybeBindToTemp) 5115960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 51162f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 5117523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 51183fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit, /*IsExtraneousCopy=*/false); 511920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 512020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5121906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 512220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 5123906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5124906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionRValue: { 512520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 51265baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 5127906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_QualificationConversionLValue ? 51285baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 5129906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_QualificationConversionXValue ? 51305baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 51315baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 5132429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, CK_NoOp, VK); 513320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5134906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 5135906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5136f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 5137f85e193739c953358c865005855253af4f68a497John McCall Sema::CheckedConversionKind CCK 5138f85e193739c953358c865005855253af4f68a497John McCall = Kind.isCStyleCast()? Sema::CCK_CStyleCast 5139f85e193739c953358c865005855253af4f68a497John McCall : Kind.isFunctionalCast()? Sema::CCK_FunctionalCast 5140c8d7f586180995ba33d03c0f6115b6a7bdefe326Richard Smith : Kind.isExplicitCast()? Sema::CCK_OtherCast 5141f85e193739c953358c865005855253af4f68a497John McCall : Sema::CCK_ImplicitConversion; 5142429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5143429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformImplicitConversion(CurInit.get(), Step->Type, *Step->ICS, 5144f85e193739c953358c865005855253af4f68a497John McCall getAssignmentAction(Entity), CCK); 5145429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5146f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 51473fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = CurInitExprRes; 514820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5149f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 5150dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5151d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 5152429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 515313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Hack: We must pass *ResultType if available in order to set the type 515413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // of arrays, e.g. in 'int ar[] = {1, 2, 3};'. 515513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // But in 'const X &x = {1, 2, 3};' we're supposed to initialize a 515613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // temporary, not a reference, so we should pass Ty. 515713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Worst case: 'const int (&arref)[] = {1, 2, 3};'. 515813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Since this step is never used for a reference directly, we explicitly 515913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // unwrap references here and rewrap them afterwards. 516013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // We also need to create a InitializeTemporary entity for this. 516113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType Ty = ResultType ? ResultType->getNonReferenceType() : Step->Type; 5162cbf82092cdb9e3a2e8528384c878f2084a14981cSebastian Redl bool IsTemporary = Entity.getType()->isReferenceType(); 516313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(Ty); 516413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListChecker PerformInitList(S, IsTemporary ? TempEntity : Entity, 516513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitList, Ty, /*VerifyOnly=*/false, 5166168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 51674e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 516814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (PerformInitList.HadError()) 5169f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5170d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 517113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResultType) { 517213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if ((*ResultType)->isRValueReferenceType()) 517313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getRValueReferenceType(Ty); 517413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else if ((*ResultType)->isLValueReferenceType()) 517513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getLValueReferenceType(Ty, 517613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (*ResultType)->getAs<LValueReferenceType>()->isSpelledAsLValue()); 517713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl *ResultType = Ty; 517813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 517913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 518013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *StructuredInitList = 518113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl PerformInitList.getFullyStructuredList(); 5182d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 518313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(StructuredInitList); 5184d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5185d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 518651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 518710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl case SK_ListConstructorCall: { 5188168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // When an initializer list is passed for a parameter of type "reference 5189168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // to object", we don't get an EK_Temporary entity, but instead an 5190168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl // EK_Parameter entity with reference type. 5191bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // FIXME: This is a hack. What we really should do is create a user 5192bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // conversion step for this case, but this makes it considerably more 5193bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // complicated. For now, this will do. 5194168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( 5195168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Entity.getType().getNonReferenceType()); 5196168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl bool UseTemporary = Entity.getType()->isReferenceType(); 5197f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith assert(Args.size() == 1 && "expected a single argument for list init"); 51983fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer InitListExpr *InitList = cast<InitListExpr>(Args[0]); 519903544fccd1782418c1bf2528111683e18f43b913Richard Smith S.Diag(InitList->getExprLoc(), diag::warn_cxx98_compat_ctor_list_init) 520003544fccd1782418c1bf2528111683e18f43b913Richard Smith << InitList->getSourceRange(); 520110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Arg(InitList->getInits(), InitList->getNumInits()); 5202168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity : 5203168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Entity, 52043fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer Kind, Arg, *Step, 520510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 520610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl break; 520710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 52088713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 520913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 521013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(cast<InitListExpr>(CurInit.take())->getInit(0)); 521113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 521213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 521313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: { 521413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *E = CurInit.take(); 521513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic = Step->WrappingSyntacticList; 521613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *ILE = new (S.Context) InitListExpr(S.Context, 52173b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer Syntactic->getLBraceLoc(), E, Syntactic->getRBraceLoc()); 521813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setSyntacticForm(Syntactic); 521913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setType(E->getType()); 522013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setValueKind(E->getValueKind()); 522113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(ILE); 522213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 522313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 522413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 5225bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl case SK_ConstructorInitialization: { 5226bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // When an initializer list is passed for a parameter of type "reference 5227bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // to object", we don't get an EK_Temporary entity, but instead an 5228bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // EK_Parameter entity with reference type. 5229bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // FIXME: This is a hack. What we really should do is create a user 5230bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // conversion step for this case, but this makes it considerably more 5231bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl // complicated. For now, this will do. 5232bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( 5233bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl Entity.getType().getNonReferenceType()); 5234bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl bool UseTemporary = Entity.getType()->isReferenceType(); 5235bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity 5236bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl : Entity, 52373fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer Kind, Args, *Step, 523810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 523951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5240bac5cf4110c1c9ba0992fad4fd9f66cedc27f3daSebastian Redl } 5241dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 524271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 524316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 524416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 5245dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (NextStep != StepEnd && 5246f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith (NextStep->Kind == SK_ConstructorInitialization || 5247f4bb8d06c4f1665f89a9e9ddd61f2a2d26904da0Richard Smith NextStep->Kind == SK_ListConstructorCall)) { 524816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 524916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 525016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 525116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 52524e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().CPlusPlus && 525316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 5254ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 5255ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor if (!TSInfo) 5256dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TSInfo = S.Context.getTrivialTypeSourceInfo(Step->Type, 5257ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor Kind.getRange().getBegin()); 5258ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor 5259ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor CurInit = S.Owned(new (S.Context) CXXScalarValueInitExpr( 5260ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo->getType().getNonLValueExprType(S.Context), 5261ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo, 526271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 526316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 526471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 526516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 526671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 526771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 526818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 526918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 5270429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get()->getType(); 52713fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer ExprResult Result = CurInit; 527218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 5273429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckSingleAssignmentConstraints(Step->Type, Result); 5274429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 5275429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 52763fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = Result; 5277aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5278aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 52793fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer ExprResult CurInitExprRes = CurInit; 5280aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 5281aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 5282429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExprRes) 5283aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 5284aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 5285429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5286429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 52873fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer CurInit = CurInitExprRes; 5288aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5289a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 529018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 529118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 5292429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get(), 5293a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 5294a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 5295a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 5296f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5297a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 5298a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 529918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 530018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 5301cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 5302cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 5303cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 5304429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CheckStringInit(CurInit.get(), ResultType ? *ResultType : Ty, 5305fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall S.Context.getAsArrayType(Ty), S); 5306cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 5307cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 5308569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 5309569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 5310429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, 53112de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_ObjCObjectLValueCast, 5312c1c0dfb376b829b94d4c61e9f358ce23e6aa3169Eli Friedman CurInit.get()->getValueKind()); 5313569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 5314cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5315cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 5316cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Okay: we checked everything before creating this step. Note that 5317cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // this is a GNU extension. 5318cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), diag::ext_array_init_copy) 5319429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << Step->Type << CurInit.get()->getType() 5320429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 5321cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5322cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the destination type is an incomplete array type, update the 5323cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type accordingly. 5324cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (ResultType) { 5325cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const IncompleteArrayType *IncompleteDest 5326cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = S.Context.getAsIncompleteArrayType(Step->Type)) { 5327cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ConstantArrayType *ConstantSource 5328429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley = S.Context.getAsConstantArrayType(CurInit.get()->getType())) { 5329cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor *ResultType = S.Context.getConstantArrayType( 5330cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor IncompleteDest->getElementType(), 5331cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ConstantSource->getSize(), 5332cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ArrayType::Normal, 0); 5333cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5334cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5335cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5336f85e193739c953358c865005855253af4f68a497John McCall break; 5337cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 53380f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 53390f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // Okay: we checked everything before creating this step. Note that 53400f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith // this is a GNU extension. 53410f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith S.Diag(Kind.getLocation(), diag::ext_array_init_parens) 53420f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith << CurInit.get()->getSourceRange(); 53430f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith break; 53440f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 5345f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 5346f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 5347f85e193739c953358c865005855253af4f68a497John McCall checkIndirectCopyRestoreSource(S, CurInit.get()); 5348f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(new (S.Context) 5349f85e193739c953358c865005855253af4f68a497John McCall ObjCIndirectCopyRestoreExpr(CurInit.take(), Step->Type, 5350f85e193739c953358c865005855253af4f68a497John McCall Step->Kind == SK_PassByIndirectCopyRestore)); 5351f85e193739c953358c865005855253af4f68a497John McCall break; 5352f85e193739c953358c865005855253af4f68a497John McCall 5353f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 5354f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, Step->Type, 535533e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall CK_ARCProduceObject, 5356f85e193739c953358c865005855253af4f68a497John McCall CurInit.take(), 0, VK_RValue)); 5357cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 53582b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 53592b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: { 53602b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType Dest = Step->Type; 53612b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 53622b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl bool Success = S.isStdInitializerList(Dest, &E); 53632b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl (void)Success; 53642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(Success && "Destination type changed?"); 53652835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl 53662835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl // If the element type has a destructor, check it. 53672835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (CXXRecordDecl *RD = E->getAsCXXRecordDecl()) { 53682835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (!RD->hasIrrelevantDestructor()) { 53692835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl if (CXXDestructorDecl *Destructor = S.LookupDestructor(RD)) { 53702835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.MarkFunctionReferenced(Kind.getLocation(), Destructor); 53712835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.CheckDestructorAccess(Kind.getLocation(), Destructor, 53722835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.PDiag(diag::err_access_dtor_temp) << E); 53732835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl S.DiagnoseUseOfDecl(Destructor, Kind.getLocation()); 53742835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53752835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53762835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl } 53772835745a451002798fed9800aeb19277f6a8fcb3Sebastian Redl 53782b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr *ILE = cast<InitListExpr>(CurInit.take()); 537903544fccd1782418c1bf2528111683e18f43b913Richard Smith S.Diag(ILE->getExprLoc(), diag::warn_cxx98_compat_initializer_list_init) 538003544fccd1782418c1bf2528111683e18f43b913Richard Smith << ILE->getSourceRange(); 53812b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl unsigned NumInits = ILE->getNumInits(); 53822b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl SmallVector<Expr*, 16> Converted(NumInits); 53832b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 53842b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 53852b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 53862b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl NumInits), 53872b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 53882b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element =InitializedEntity::InitializeElement(S.Context, 53892b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 53902b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl for (unsigned i = 0; i < NumInits; ++i) { 53912b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 53922b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Init = S.Owned(ILE->getInit(i)); 53932b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Res = S.PerformCopyInitialization(Element, 53942b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Init.get()->getExprLoc(), 53952b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Init); 53962b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(!Res.isInvalid() && "Result changed since try phase."); 53972b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Converted[i] = Res.take(); 53982b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 53992b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr *Semantic = new (S.Context) 54002b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr(S.Context, ILE->getLBraceLoc(), 54013b6bef9a213249c6ab6d67c07b1ac6380961be3eBenjamin Kramer Converted, ILE->getRBraceLoc()); 54022b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Semantic->setSyntacticForm(ILE); 54032b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Semantic->setType(Dest); 540432cf1f27ae8620e7b79bb4e81a067187c0aab7aeSebastian Redl Semantic->setInitializesStdInitializerList(); 54052b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl CurInit = S.Owned(Semantic); 54062b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 54072b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 540820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 540920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 541015d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall 541115d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall // Diagnose non-fatal problems with the completed initialization. 541215d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall if (Entity.getKind() == InitializedEntity::EK_Member && 541315d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl())->isBitField()) 541415d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall S.CheckBitFieldInitialization(Kind.getLocation(), 541515d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl()), 541615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall CurInit.get()); 5417dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 54183fe198bf0d6118c7b080c17c3bb28d7c84e458b9Benjamin Kramer return CurInit; 541920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 542020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 542120093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 542220093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 542320093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 5424dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumibool InitializationSequence::Diagnose(Sema &S, 542520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 542620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 542720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 5428d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 542920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 5430dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5431d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 543220093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 543320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 54349db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 54359db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 54369db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 54379db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 54389db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 54399db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 54409db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 544120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5442dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 544320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 544420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 544520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 544620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 544720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5448dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5449cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5450cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5451cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), 5452cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor (Failure == FK_ArrayTypeMismatch 5453cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ? diag::err_array_init_different_type 5454cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor : diag::err_array_init_non_constant_array)) 5455cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << DestType.getNonReferenceType() 5456cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getType() 5457cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getSourceRange(); 5458cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5459cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 546073076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 546173076431605556fdbf28d287d084a73a24a8b8d4John McCall S.Diag(Kind.getLocation(), diag::err_variable_object_no_init) 546273076431605556fdbf28d287d084a73a24a8b8d4John McCall << Args[0]->getSourceRange(); 546373076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 546473076431605556fdbf28d287d084a73a24a8b8d4John McCall 54656bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 54666bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 5467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.ResolveAddressOfOverloadedFunction(Args[0], 546820093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 54696bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 54706bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 547120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 54726bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 5473dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 547420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 54754a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 547620093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 547720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 547818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 547918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 548018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 548118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 548218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 548318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 548418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 548518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 548618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 548713a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 548813a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 548920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5490dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 549120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 549220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 549320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 549420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 549513a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, 549613a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 549720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5498dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 549920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 550020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 550120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 550220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 550320093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 5504120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 55058fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best, 55068fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor true); 550720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 55086c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 550920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 55109f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 551120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 551220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 551320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5514dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 551520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 55169f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 551720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 551820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5519dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 552020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 552113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (isa<InitListExpr>(Args[0])) { 552213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Diag(Kind.getLocation(), 552313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl diag::err_lvalue_reference_bind_to_initlist) 552413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType().isVolatileQualified() 552513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType() 552613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << Args[0]->getSourceRange(); 552713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 552813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 552913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Intentional fallthrough 553013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 553120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5532dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Kind.getLocation(), 553320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 553420093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 553520093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 5536ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 553720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 553820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 553920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 554020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5541dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 554220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 554320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 5544fb5d7efc279335bde2cdc0a73da525d6b28201e9Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getType() 554520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 554620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5547dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 554820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 554920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 555020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 555120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 555220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 555320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5554dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 555520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 555620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 555720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 55587eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 555920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 556020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 5561926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5562926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5563926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 556420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5565dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 55661be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor case FK_ConversionFailed: { 55671be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor QualType FromType = Args[0]->getType(); 55686efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu PartialDiagnostic PDiag = S.PDiag(diag::err_init_conversion_failed) 556918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 557020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 55717eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 55721be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor << FromType 557320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 55746efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.HandleFunctionTypeMismatch(PDiag, FromType, DestType); 55756efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.Diag(Kind.getLocation(), PDiag); 5576926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5577926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5578926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 5579d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 55801be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor } 5581429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5582429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5583429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley // No-op. This error has already been reported. 5584429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5585429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5586d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 558799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 558899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 558999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 559019311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(InitList->getInit(0)->getLocEnd(), 559199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 5592dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi else 559319311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(Args[0]->getLocEnd(), Args[NumArgs - 1]->getLocEnd()); 5594d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 559519311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R.setBegin(S.PP.getLocForEndOfToken(R.getBegin())); 559619311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor if (Kind.isCStyleOrFunctionalCast()) 559719311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_builtin_func_cast_more_than_one_arg) 559819311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << R; 559919311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor else 560019311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 560119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << /*scalar=*/2 << R; 5602d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5603d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 5604d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5605d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 5606d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 5607d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 5608d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5609d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5610d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 5611d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 5612d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 5613d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5614dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5615cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 561651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 561751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 561851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 5619dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ArgsRange = SourceRange(Args[0]->getLocStart(), 562051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 5621dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5622cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl if (Failure == FK_ListConstructorOverloadFailed) { 5623cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl assert(NumArgs == 1 && "List construction from other than 1 argument."); 5624cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitListExpr *InitList = cast<InitListExpr>(Args[0]); 5625cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl Args = InitList->getInits(); 5626cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl NumArgs = InitList->getNumInits(); 5627cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl } 5628cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl 562951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 563051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 563151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 563251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 563351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 563451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 5635120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 563613a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 563751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5638dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 563951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 56409db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 56419db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 56429db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 56439db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 56449db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 56459db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 56469db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 56479db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 56489db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 56499db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 56509db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 56519db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 56529db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56539db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56549db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 56559db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 56569db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 56579db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 56589db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 56599db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 56609db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 56619db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 56629db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 56639db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 56649db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 56659db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 56669db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 56679db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 56689db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 56699db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 56709db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 56719db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 5672dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Record->getDecl()->getLocation(), 56739db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 56749db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 56759db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 56769db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 56779db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 56789db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 567951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 568051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 568113a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, 568213a140caba448a66ffcc5ff0d32a87d6e4f4ad3fAhmed Charles llvm::makeArrayRef(Args, NumArgs)); 568351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5684dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 568551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 568651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 5687120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 5688120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 5689e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor if (Ovl != OR_Deleted) { 5690e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 5691e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor << true << DestType << ArgsRange; 569251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 5693e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor break; 569451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5695e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor 5696e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // If this is a defaulted or implicitly-declared function, then 5697e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // it was implicitly deleted. Make it clear that the deletion was 5698e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor // implicit. 56996c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith if (S.isImplicitlyDeleted(Best->Function)) 5700e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_special_init) 57016c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith << S.getSpecialMember(cast<CXXMethodDecl>(Best->Function)) 5702e4e68d45f89ff4899d30cbd196603d09b7fbc150Douglas Gregor << DestType << ArgsRange; 57036c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith else 57046c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 57056c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith << true << DestType << ArgsRange; 57066c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith 57076c4c36c4ed1007143f5b8655eb68b313a7e12e76Richard Smith S.NoteDeletedFunction(Best->Function); 570851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 570951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5710dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 571151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 571251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 571351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 571451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 57159fdefb338ead088dd7a5dd4ff3df807586b26d41David Blaikie break; 5716dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 571799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 57189db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 57199db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 57209db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 57219db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 57229db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 57239db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 57249db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 57259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 57269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 57279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 57289db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 57299db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 57309db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 57319db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 57329db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 57339db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 57349db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 573599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 5736dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 57378713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_Incomplete: 573869a30b838c723cb1850de55cfa48a402cfeeb6e0Douglas Gregor S.RequireCompleteType(Kind.getLocation(), FailedIncompleteType, 57398713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl diag::err_init_incomplete_type); 57408713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 57418713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 574214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl case FK_ListInitializationFailed: { 574314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Run the init list checker again to emit diagnostics. 574414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 574514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType DestType = Entity.getType(); 574614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker DiagnoseInitList(S, Entity, InitList, 5747c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/false, 5748168319c81b8f4e7addf36ad15ef24919faf23504Sebastian Redl Kind.getKind() != InitializationKind::IK_DirectList || 57494e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().CPlusPlus0x); 575014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(DiagnoseInitList.HadError() && 575114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Inconsistent init list check result."); 575214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl break; 575314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 57545acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 57555acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: { 57565acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: Already diagnosed! 57575acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 57585acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 57592b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 57602b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: { 57612b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Try to perform all copies again. 57622b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 57632b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl unsigned NumInits = InitList->getNumInits(); 57642b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType DestType = Entity.getType(); 57652b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl QualType E; 57662b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl bool Success = S.isStdInitializerList(DestType, &E); 57672b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl (void)Success; 57682b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl assert(Success && "Where did the std::initializer_list go?"); 57692b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity HiddenArray = InitializedEntity::InitializeTemporary( 57702b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl S.Context.getConstantArrayType(E, 57712b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), 57722b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl NumInits), 57732b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ArrayType::Normal, 0)); 57742b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl InitializedEntity Element = InitializedEntity::InitializeElement(S.Context, 57752b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 0, HiddenArray); 57762b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // Show at most 3 errors. Otherwise, you'd get a lot of errors for errors 57772b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // where the init list type is wrong, e.g. 57782b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // std::initializer_list<void*> list = { 1, 2, 3, 4, 5, 6, 7, 8 }; 57792b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl // FIXME: Emit a note if we hit the limit? 57802b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl int ErrorCount = 0; 57812b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl for (unsigned i = 0; i < NumInits && ErrorCount < 3; ++i) { 57822b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl Element.setElementIndex(i); 57832b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ExprResult Init = S.Owned(InitList->getInit(i)); 57842b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl if (S.PerformCopyInitialization(Element, Init.get()->getExprLoc(), Init) 57852b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl .isInvalid()) 57862b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl ++ErrorCount; 57872b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 57882b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 57892b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl } 579070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 579170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: { 579270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl S.Diag(Kind.getLocation(), diag::err_selected_explicit_constructor) 579370e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl << Args[0]->getSourceRange(); 579470e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OverloadCandidateSet::iterator Best; 579570e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OverloadingResult Ovl 579670e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 5797e7d0bbfa101d0f0b955c04c417b5e3283497a7edMatt Beaumont-Gay (void)Ovl; 579870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl assert(Ovl == OR_Success && "Inconsistent overload resolution"); 579970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 580070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl S.Diag(CtorDecl->getLocation(), diag::note_constructor_declared_here); 580170e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl break; 580270e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl } 580320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5804dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5805a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 580620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 580720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 580818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 58095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid InitializationSequence::dump(raw_ostream &OS) const { 5810de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 5811de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 5812de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 5813de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 5814de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 5815de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 5816de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5817dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5818de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 5819de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 5820de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5821dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5822de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 5823de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 5824de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5825dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5826cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5827cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array type mismatch"; 5828cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5829cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5830cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5831cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "non-constant array initializer"; 5832cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5833cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5834de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 5835de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 5836de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5837dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5838de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 5839de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 5840de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5841dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5842de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 5843de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 5844de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5845dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5846de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5847de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 5848de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5849dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5850de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 5851de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 5852de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5853dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5854de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 5855de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 5856de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5857dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5858de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 5859de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 5860de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5861dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5862de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 5863de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 5864de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5865dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5866429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5867429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley OS << "conversion from property failed"; 5868429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5869429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5870de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 5871de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 5872de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5873dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5874de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 5875de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 5876de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5877dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5878de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 5879de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 5880de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5881dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5882de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 5883de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 5884de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5885dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5886de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 5887de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 5888de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5889dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5890de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 5891de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 5892de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5893dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 589472a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 589572a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor OS << "initialization of incomplete type"; 589672a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 58978713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 58988713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 589914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl OS << "list initialization checker failure"; 59005acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 59015acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 590273076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 590373076431605556fdbf28d287d084a73a24a8b8d4John McCall OS << "variable length array has an initializer"; 590473076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 590573076431605556fdbf28d287d084a73a24a8b8d4John McCall 59065acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 59075acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall OS << "initializer expression isn't contextually valid"; 59085acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 5909b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky 5910b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky case FK_ListConstructorOverloadFailed: 5911b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky OS << "list constructor overloading failed"; 5912b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky break; 59132b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 59142b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case FK_InitListElementCopyFailure: 59152b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl OS << "copy construction of initializer list element failed"; 59162b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 591770e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl 591870e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl case FK_ExplicitConstructor: 591970e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl OS << "list copy initialization chose explicit constructor"; 592070e24fccc8ef4aa8be03a778e9655bfcfa79dd14Sebastian Redl break; 5921dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 5922de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 5923de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5924de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5925dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5926de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 59277491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Dependent sequence\n"; 5928de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5929dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 59307491c499e826682e128a400038361ebcbde30eecSebastian Redl case NormalSequence: 59317491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Normal sequence: "; 5932de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5933de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5934dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5935de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 5936de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 5937de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 5938de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5939dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5940de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 5941de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 5942de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 5943de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5944dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5945de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 5946de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 5947de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5948dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5949906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 5950906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "derived-to-base case (xvalue" << S->Type.getAsString() << ")"; 5951906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 5952dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5953de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 5954de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 5955de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5956dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5957de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 5958de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 5959de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5960dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5961de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 5962de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 5963de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5964dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5965523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 5966523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 5967523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 5968523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 5969de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 5970b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << "user-defined conversion via " << *S->Function.Function; 5971de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5972906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5973de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 5974de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 597513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5976de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 5977906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5978906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "qualification conversion (xvalue)"; 597913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5980906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5981de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 5982de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 5983de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5984dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5985de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 5986de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 5987de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 5988de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 5989de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5990dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5991de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 59928713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list aggregate initialization"; 59938713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 59948713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 59958713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 59968713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list initialization via constructor"; 5997de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5998dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 599913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 600013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "unwrap reference initializer list"; 600113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 600213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 600313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 600413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "rewrap reference initializer list"; 600513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 600613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 6007de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 6008de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 6009de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6010dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 6011de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 6012de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 6013de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6014dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 6015de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 6016de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 6017de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6018dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 6019de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 6020de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 6021de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 6022569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 6023569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 6024569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor OS << "Objective-C object conversion"; 6025569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 6026cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 6027cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 6028cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array initialization"; 6029cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 6030f85e193739c953358c865005855253af4f68a497John McCall 60310f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith case SK_ParenthesizedArrayInit: 60320f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith OS << "parenthesized array initialization"; 60330f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith break; 60340f163e964289bc18e9bc1ec37a6a01018ba62640Richard Smith 6035f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 6036f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect copy and restore"; 6037f85e193739c953358c865005855253af4f68a497John McCall break; 6038f85e193739c953358c865005855253af4f68a497John McCall 6039f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 6040f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect restore"; 6041f85e193739c953358c865005855253af4f68a497John McCall break; 6042f85e193739c953358c865005855253af4f68a497John McCall 6043f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 6044f85e193739c953358c865005855253af4f68a497John McCall OS << "Objective-C object retension"; 6045f85e193739c953358c865005855253af4f68a497John McCall break; 60462b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl 60472b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl case SK_StdInitializerList: 60482b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl OS << "std::initializer_list from initializer list"; 60492b916b8b55aaf0152ab9ad630c8454bf6373b085Sebastian Redl break; 6050de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 6051de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 6052de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 6053de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 6054de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 6055de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 6056de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 6057de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 60584c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smithstatic void DiagnoseNarrowingInInitList(Sema &S, InitializationSequence &Seq, 60594c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith QualType EntityType, 60604c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const Expr *PreInit, 60614c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const Expr *PostInit) { 60624c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (Seq.step_begin() == Seq.step_end() || PreInit->isValueDependent()) 60634c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60644c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60654c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A narrowing conversion can only appear as the final implicit conversion in 60664c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // an initialization sequence. 60674c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const InitializationSequence::Step &LastStep = Seq.step_end()[-1]; 60684c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (LastStep.Kind != InitializationSequence::SK_ConversionSequence) 60694c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60704c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60714c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const ImplicitConversionSequence &ICS = *LastStep.ICS; 60724c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith const StandardConversionSequence *SCS = 0; 60734c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith switch (ICS.getKind()) { 60744c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::StandardConversion: 60754c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SCS = &ICS.Standard; 60764c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60774c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::UserDefinedConversion: 60784c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith SCS = &ICS.UserDefined.After; 60794c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 60804c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::AmbiguousConversion: 60814c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::EllipsisConversion: 60824c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case ImplicitConversionSequence::BadConversion: 60834c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 60844c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith } 60854c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60864c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // Determine the type prior to the narrowing conversion. If a conversion 60874c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // operator was used, this may be different from both the type of the entity 60884c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // and of the pre-initialization expression. 60894c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith QualType PreNarrowingType = PreInit->getType(); 60904c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (Seq.step_begin() + 1 != Seq.step_end()) 60914c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith PreNarrowingType = Seq.step_end()[-2].Type; 60924c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 60934c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // C++11 [dcl.init.list]p7: Check whether this is a narrowing conversion. 60944c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith APValue ConstantValue; 6095f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith QualType ConstantType; 6096f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith switch (SCS->getNarrowingKind(S.Context, PostInit, ConstantValue, 6097f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith ConstantType)) { 60984c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Not_Narrowing: 60994c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // No narrowing occurred. 61004c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return; 61014c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61024c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Type_Narrowing: 61034c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // This was a floating-to-integer conversion, which is always considered a 61044c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // narrowing conversion even if the value is a constant and can be 61054c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // represented exactly as an integer. 61064c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 61074e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6108f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_type_narrowing 6109f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6110f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_type_narrowing_sfinae 6111f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_type_narrowing) 61124c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61134c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PreNarrowingType.getLocalUnqualifiedType() 61144c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << EntityType.getLocalUnqualifiedType(); 61154c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 61164c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61174c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Constant_Narrowing: 61184c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A constant value was narrowed. 61194c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 61204e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6121f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_constant_narrowing 6122f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6123f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_constant_narrowing_sfinae 6124f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_constant_narrowing) 61254c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 6126f602806965531ee06fd8664b9d7a8912c4af2870Richard Smith << ConstantValue.getAsString(S.getASTContext(), ConstantType) 61279906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 61284c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 61294c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 61304c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith case NK_Variable_Narrowing: 61314c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith // A variable's value may have been narrowed. 61324c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), 61334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie S.getLangOpts().MicrosoftExt || !S.getLangOpts().CPlusPlus0x? 6134f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::warn_init_list_variable_narrowing 6135f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : S.isSFINAEContext()? 6136f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor diag::err_init_list_variable_narrowing_sfinae 6137f3c82c5f5c0321babf054983c29ad84cc90244f7Douglas Gregor : diag::err_init_list_variable_narrowing) 61384c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61394c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PreNarrowingType.getLocalUnqualifiedType() 61409906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 61414c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith break; 61424c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith } 6143191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 6144f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> StaticCast; 6145191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::raw_svector_ostream OS(StaticCast); 6146191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << "static_cast<"; 6147191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (const TypedefType *TT = EntityType->getAs<TypedefType>()) { 6148191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // It's important to use the typedef's name if there is one so that the 6149191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // fixit doesn't break code using types like int64_t. 6150191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // 6151191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // FIXME: This will break if the typedef requires qualification. But 6152191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // getQualifiedNameAsString() includes non-machine-parsable components. 6153b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << *TT->getDecl(); 6154191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else if (const BuiltinType *BT = EntityType->getAs<BuiltinType>()) 61554e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie OS << BT->getName(S.getLangOpts()); 6156191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin else { 6157191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Oops, we didn't find the actual type of the variable. Don't emit a fixit 6158191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // with a broken cast. 6159191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return; 6160191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 6161191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << ">("; 61624c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.Diag(PostInit->getLocStart(), diag::note_init_list_narrowing_override) 61634c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << PostInit->getSourceRange() 61644c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith << FixItHint::CreateInsertion(PostInit->getLocStart(), OS.str()) 6165191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << FixItHint::CreateInsertion( 61664c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith S.getPreprocessor().getLocForEndOfToken(PostInit->getLocEnd()), ")"); 6167191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin} 6168191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 616918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 617018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 617118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 61722be7e90b81509204b99b7bbf9753ad17b894a12aSean Huntbool 61732be7e90b81509204b99b7bbf9753ad17b894a12aSean HuntSema::CanPerformCopyInitialization(const InitializedEntity &Entity, 61742be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt ExprResult Init) { 61752be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt if (Init.isInvalid()) 61762be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt return false; 61772be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 61782be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt Expr *InitE = Init.get(); 61792be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt assert(InitE && "No initialization expression"); 61802be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 61813c394c54511b27be0ff6968f159bba3521ab3c3eDouglas Gregor InitializationKind Kind 61823c394c54511b27be0ff6968f159bba3521ab3c3eDouglas Gregor = InitializationKind::CreateCopy(InitE->getLocStart(), SourceLocation()); 61832be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 6184383616cd2e61131a534afd9364ef53f643e1f834Sebastian Redl return !Seq.Failed(); 61852be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt} 61862be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 6187dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 618818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 618918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 6190191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ExprResult Init, 6191ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool TopLevelOfInitList, 6192ed878af7914df535b32d64f555fa118413186672Douglas Gregor bool AllowExplicit) { 619318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 619418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 619518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 619615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall Expr *InitE = Init.get(); 619718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 619818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 619918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 620018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 620118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 620218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 6203ed878af7914df535b32d64f555fa118413186672Douglas Gregor EqualLoc, 6204ed878af7914df535b32d64f555fa118413186672Douglas Gregor AllowExplicit); 620518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 620618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 6207191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 62084c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith ExprResult Result = Seq.Perform(*this, Entity, Kind, MultiExprArg(&InitE, 1)); 62094c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 62104c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith if (!Result.isInvalid() && TopLevelOfInitList) 62114c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith DiagnoseNarrowingInInitList(*this, Seq, Entity.getType(), 62124c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith InitE, Result.get()); 62134c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith 62144c3fc9b38d3723f73e4ded594cebf38c76f91d93Richard Smith return Result; 621518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 6216