SemaInit.cpp revision 572fc62b52b5b113cbaf528bd3ec00fcde19a46e
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// 10dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// This file implements semantic analysis for initializers. The main entry 11dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// point is Sema::CheckInitList(), but all of the work is performed 12dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// within the InitListChecker class. 13dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// 148b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattner// This file also implements Sema::CheckInitializerTypes. 150cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 160cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===----------------------------------------------------------------------===// 170cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 18e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Initialization.h" 19e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Lookup.h" 20e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Sema.h" 211e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner#include "clang/Lex/Preprocessor.h" 2205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor#include "clang/Parse/Designator.h" 230cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff#include "clang/AST/ASTContext.h" 242078bb9c9336da56ea521e98e718556b227541f6Anders Carlsson#include "clang/AST/ExprCXX.h" 2579e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner#include "clang/AST/ExprObjC.h" 26d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor#include "clang/AST/TypeLoc.h" 2720093b4bf698f292c664676987541d5103b65b15Douglas Gregor#include "llvm/Support/ErrorHandling.h" 28c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor#include <map> 2905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorusing namespace clang; 300cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 31dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 32dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Sema Initialization Checking 33dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 34dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 3579e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattnerstatic Expr *IsStringInit(Expr *Init, QualType DeclType, ASTContext &Context) { 368879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner const ArrayType *AT = Context.getAsArrayType(DeclType); 378879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (!AT) return 0; 388879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 398718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman if (!isa<ConstantArrayType>(AT) && !isa<IncompleteArrayType>(AT)) 408718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman return 0; 418718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman 428879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // See if this is a string literal or @encode. 438879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner Init = Init->IgnoreParens(); 441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 458879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Handle @encode, which is a narrow string. 468879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (isa<ObjCEncodeExpr>(Init) && AT->getElementType()->isCharType()) 478879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner return Init; 488879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 498879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Otherwise we can only handle string literals. 508879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner StringLiteral *SL = dyn_cast<StringLiteral>(Init); 51220b6369d7717bfe6894b46cef055d3e763827f2Chris Lattner if (SL == 0) return 0; 52bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman 53bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman QualType ElemTy = Context.getCanonicalType(AT->getElementType()); 548879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // char array can be initialized with a narrow string. 558879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Only allow char x[] = "foo"; not char x[] = L"foo"; 568879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (!SL->isWide()) 57bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman return ElemTy->isCharType() ? Init : 0; 588879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 59bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // wchar_t array can be initialized with a wide string: C99 6.7.8p15 (with 60bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // correction from DR343): "An array with element type compatible with a 61bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // qualified or unqualified version of wchar_t may be initialized by a wide 62bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // string literal, optionally enclosed in braces." 63bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman if (Context.typesAreCompatible(Context.getWCharType(), 64bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman ElemTy.getUnqualifiedType())) 658879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner return Init; 661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 67dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner return 0; 68dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 69dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 7079e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattnerstatic void CheckStringInit(Expr *Str, QualType &DeclT, Sema &S) { 7179e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner // Get the length of the string as parsed. 7279e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner uint64_t StrLength = 7379e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner cast<ConstantArrayType>(Str->getType())->getSize().getZExtValue(); 7479e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner 751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7679e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner const ArrayType *AT = S.Context.getAsArrayType(DeclT); 77dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner if (const IncompleteArrayType *IAT = dyn_cast<IncompleteArrayType>(AT)) { 781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // C99 6.7.8p14. We have an array of character type with unknown size 79dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // being initialized to a string literal. 80dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner llvm::APSInt ConstVal(32); 8119da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner ConstVal = StrLength; 82dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // Return a new array type (C99 6.7.8p22). 8346a617a792bfab0d9b1e057371ea3b9540802226John McCall DeclT = S.Context.getConstantArrayType(IAT->getElementType(), 8446a617a792bfab0d9b1e057371ea3b9540802226John McCall ConstVal, 8546a617a792bfab0d9b1e057371ea3b9540802226John McCall ArrayType::Normal, 0); 8619da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner return; 87dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner } 881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 898718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman const ConstantArrayType *CAT = cast<ConstantArrayType>(AT); 901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 918718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // C99 6.7.8p14. We have an array of character type with known size. However, 928718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // the size may be smaller or larger than the string we are initializing. 938718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // FIXME: Avoid truncation for 64-bit length strings. 948718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman if (StrLength-1 > CAT->getSize().getZExtValue()) 958718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman S.Diag(Str->getSourceRange().getBegin(), 968718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman diag::warn_initializer_string_for_char_array_too_long) 978718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman << Str->getSourceRange(); 981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 998718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // Set the type to the actual size that we are initializing. If we have 1008718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // something like: 1018718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // char x[1] = "foo"; 1028718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // then this will set the string literal's type to char[1]. 1038718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman Str->setType(DeclT); 104dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 105dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 106dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 107dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Semantic checking for initializer lists. 108dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 109dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 1109e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// @brief Semantic checking for initializer lists. 1119e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1129e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// The InitListChecker class contains a set of routines that each 1139e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// handle the initialization of a certain kind of entity, e.g., 1149e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// arrays, vectors, struct/union types, scalars, etc. The 1159e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// InitListChecker itself performs a recursive walk of the subobject 1169e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure of the type to be initialized, while stepping through 1179e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// the initializer list one element at a time. The IList and Index 1189e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// parameters to each of the Check* routines contain the active 1199e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// (syntactic) initializer list and the index into that initializer 1209e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list that represents the current initializer. Each routine is 1219e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// responsible for moving that Index forward as it consumes elements. 1229e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1239e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// Each Check* routine also has a StructuredList/StructuredIndex 1249e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// arguments, which contains the current the "structured" (semantic) 1259e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initializer list and the index into that initializer list where we 1269e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// are copying initializers as we map them over to the semantic 1279e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. Once we have completed our recursive walk of the subobject 1289e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure, we will have constructed a full semantic initializer 1299e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. 1309e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1319e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// C99 designators cause changes in the initializer list traversal, 1329e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// because they make the initialization "jump" into a specific 1339e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// subobject and then continue the initialization from that 1349e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// point. CheckDesignatedInitializer() recursively steps into the 1359e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// designated subobject and manages backing out the recursion to 1369e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initialize the subobjects after the one designated. 1378b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattnernamespace { 138c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorclass InitListChecker { 1390820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner Sema &SemaRef; 140c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool hadError; 141c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor std::map<InitListExpr *, InitListExpr *> SyntacticToSemantic; 142c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *FullyStructuredList; 1431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1448ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckImplicitInitList(const InitializedEntity &Entity, 145987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, QualType T, 1469e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 147eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 148eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1498ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckExplicitInitList(const InitializedEntity &Entity, 15046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 1519e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 152eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 153eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1548ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckListElementTypes(const InitializedEntity &Entity, 15546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &DeclType, 1561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 157c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1589e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 159eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 160eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckSubElementType(const InitializedEntity &Entity, 16246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType ElemType, 163c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1649e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1659e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckScalarType(const InitializedEntity &Entity, 16746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 168c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1699e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1709e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1718ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckReferenceType(const InitializedEntity &Entity, 1728ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 173930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 174930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 175930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex); 1768ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckVectorType(const InitializedEntity &Entity, 17746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, unsigned &Index, 1789e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1799e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1808ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckStructUnionTypes(const InitializedEntity &Entity, 1812bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, QualType DeclType, 1821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator Field, 183c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 1849e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 185eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 186eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1878ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckArrayType(const InitializedEntity &Entity, 188784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 1891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::APSInt elementIndex, 190c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 1919e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1929e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson bool CheckDesignatedInitializer(const InitializedEntity &Entity, 1949a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, DesignatedInitExpr *DIE, 195711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 1961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &CurrentObjectType, 197c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor RecordDecl::field_iterator *NextField, 198c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor llvm::APSInt *NextElementIndex, 199c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 200c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 201c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &StructuredIndex, 202eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 203eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject); 204c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 205c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor QualType CurrentObjectType, 206c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 207c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned StructuredIndex, 208c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor SourceRange InitRange); 2099e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor void UpdateStructuredListElement(InitListExpr *StructuredList, 2109e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex, 211c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor Expr *expr); 212c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numArrayElements(QualType DeclType); 213c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numStructUnionElements(QualType DeclType); 214930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 215d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor void FillInValueInitForField(unsigned Init, FieldDecl *Field, 216d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 217d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 218cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor void FillInValueInitializations(const InitializedEntity &Entity, 219cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 220c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorpublic: 221cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker(Sema &S, const InitializedEntity &Entity, 222cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *IL, QualType &T); 223c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool HadError() { return hadError; } 224c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 225c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // @brief Retrieves the fully-structured initializer list used for 226c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // semantic analysis and code generation. 227c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getFullyStructuredList() const { return FullyStructuredList; } 228c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor}; 2298b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattner} // end anonymous namespace 23068355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 231d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregorvoid InitListChecker::FillInValueInitForField(unsigned Init, FieldDecl *Field, 232d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 233d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitListExpr *ILE, 234d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor bool &RequiresSecondPass) { 235d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SourceLocation Loc = ILE->getSourceRange().getBegin(); 236d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned NumInits = ILE->getNumInits(); 237d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializedEntity MemberEntity 238d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = InitializedEntity::InitializeMember(Field, &ParentEntity); 239d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 240d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // FIXME: We probably don't need to handle references 241d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // specially here, since value-initialization of references is 242d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // handled in InitializationSequence. 243d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->getType()->isReferenceType()) { 244d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // C++ [dcl.init.aggr]p9: 245d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // If an incomplete or empty initializer-list leaves a 246d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // member of reference type uninitialized, the program is 247d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // ill-formed. 248d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Loc, diag::err_init_reference_member_uninitialized) 249d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << Field->getType() 250d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << ILE->getSyntacticForm()->getSourceRange(); 251d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Field->getLocation(), 252d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor diag::note_uninit_reference_member); 253d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 254d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 255d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 256d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 257d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 258d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor true); 259d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationSequence InitSeq(SemaRef, MemberEntity, Kind, 0, 0); 260d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (!InitSeq) { 261d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitSeq.Diagnose(SemaRef, MemberEntity, Kind, 0, 0); 262d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 263d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 264d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 265d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 266d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Sema::OwningExprResult MemberInit 267d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = InitSeq.Perform(SemaRef, MemberEntity, Kind, 268d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Sema::MultiExprArg(SemaRef, 0, 0)); 269d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (MemberInit.isInvalid()) { 270d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 271d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 272d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 273d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 274d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) { 275d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Do nothing 276d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (Init < NumInits) { 277d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->setInit(Init, MemberInit.takeAs<Expr>()); 278d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitSeq.getKind() 279d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor == InitializationSequence::ConstructorInitialization) { 280d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Value-initialization requires a constructor call, so 281d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // extend the initializer list to include the constructor 282d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // call and make a note that we'll need to take another pass 283d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // through the initializer list. 284709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek ILE->updateInit(SemaRef.Context, Init, MemberInit.takeAs<Expr>()); 285d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor RequiresSecondPass = true; 286d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 287d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitListExpr *InnerILE 288d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 289d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitializations(MemberEntity, InnerILE, 290d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor RequiresSecondPass); 291d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor} 292d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 2934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Recursively replaces NULL values within the given initializer list 2944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// with expressions that perform value-initialization of the 2954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// appropriate type. 296cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregorvoid 297cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::FillInValueInitializations(const InitializedEntity &Entity, 298cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, 299cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool &RequiresSecondPass) { 3001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((ILE->getType() != SemaRef.Context.VoidTy) && 301930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor "Should not have void type"); 30287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor SourceLocation Loc = ILE->getSourceRange().getBegin(); 30387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (ILE->getSyntacticForm()) 30487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor Loc = ILE->getSyntacticForm()->getSourceRange().getBegin(); 3051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3066217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) { 307d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion() && 308d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->getInitializedFieldInUnion()) 309d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(0, ILE->getInitializedFieldInUnion(), 310d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Entity, ILE, RequiresSecondPass); 311d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor else { 312d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned Init = 0; 313d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor for (RecordDecl::field_iterator 314d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field = RType->getDecl()->field_begin(), 315d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FieldEnd = RType->getDecl()->field_end(); 316d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field != FieldEnd; ++Field) { 317d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->isUnnamedBitfield()) 318d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor continue; 319d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 320d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 32187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 32287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 323d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(Init, *Field, Entity, ILE, RequiresSecondPass); 324d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 325cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 326cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 327d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ++Init; 328d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 329d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Only look at the first initialization of a union. 330d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion()) 331d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor break; 332d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 3334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 3344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 3361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType ElementType; 3391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 340cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializedEntity ElementEntity = Entity; 34187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumInits = ILE->getNumInits(); 34287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumElements = NumInits; 3430820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (const ArrayType *AType = SemaRef.Context.getAsArrayType(ILE->getType())) { 3444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = AType->getElementType(); 34587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) 34687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = CAType->getSize().getZExtValue(); 347cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 348cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 349183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = ILE->getType()->getAs<VectorType>()) { 3504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = VType->getElementType(); 35187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = VType->getNumElements(); 352cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 353cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 3541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else 3554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = ILE->getType(); 3561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 357cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 35887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor for (unsigned Init = 0; Init != NumElements; ++Init) { 35916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (hadError) 36016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return; 36116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor 362d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement || 363d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson ElementEntity.getKind() == InitializedEntity::EK_VectorElement) 364cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity.setElementIndex(Init); 365cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 36687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 367cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 368cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor true); 369cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationSequence InitSeq(SemaRef, ElementEntity, Kind, 0, 0); 370cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!InitSeq) { 371cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitSeq.Diagnose(SemaRef, ElementEntity, Kind, 0, 0); 37287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor hadError = true; 37387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 37487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 37587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 376cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor Sema::OwningExprResult ElementInit 377cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor = InitSeq.Perform(SemaRef, ElementEntity, Kind, 378cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor Sema::MultiExprArg(SemaRef, 0, 0)); 379cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (ElementInit.isInvalid()) { 38016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor hadError = true; 381cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 382cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 383cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 384cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (hadError) { 385cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // Do nothing 386cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } else if (Init < NumInits) { 387cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ILE->setInit(Init, ElementInit.takeAs<Expr>()); 388cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } else if (InitSeq.getKind() 389cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor == InitializationSequence::ConstructorInitialization) { 390cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // Value-initialization requires a constructor call, so 391cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // extend the initializer list to include the constructor 392cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // call and make a note that we'll need to take another pass 393cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // through the initializer list. 394709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek ILE->updateInit(SemaRef.Context, Init, ElementInit.takeAs<Expr>()); 395cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor RequiresSecondPass = true; 396cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 397ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else if (InitListExpr *InnerILE 398cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 399cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(ElementEntity, InnerILE, RequiresSecondPass); 4004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 4014c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 4024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 40368355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 404cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::InitListChecker(Sema &S, const InitializedEntity &Entity, 405cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *IL, QualType &T) 4060820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner : SemaRef(S) { 4070cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff hadError = false; 408c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 409b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman unsigned newIndex = 0; 4104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 4111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FullyStructuredList 412ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor = getStructuredSubobjectInit(IL, newIndex, T, 0, 0, IL->getSourceRange()); 4138ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckExplicitInitList(Entity, IL, T, newIndex, 41446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson FullyStructuredList, newStructuredIndex, 415eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor /*TopLevelObject=*/true); 416c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 417cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!hadError) { 418cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool RequiresSecondPass = false; 419cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(Entity, FullyStructuredList, RequiresSecondPass); 42016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (RequiresSecondPass && !hadError) 421cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(Entity, FullyStructuredList, 422cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor RequiresSecondPass); 423cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 4240cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4250cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numArrayElements(QualType DeclType) { 427638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // FIXME: use a proper constant 428638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman int maxElements = 0x7FFFFFFF; 429c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const ConstantArrayType *CAT = 4300820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 4310cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = static_cast<int>(CAT->getSize().getZExtValue()); 4320cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 4330cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return maxElements; 4340cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4350cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4360cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numStructUnionElements(QualType DeclType) { 4376217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *structDecl = DeclType->getAs<RecordType>()->getDecl(); 4384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor int InitializableMembers = 0; 4391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (RecordDecl::field_iterator 44017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = structDecl->field_begin(), 44117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = structDecl->field_end(); 4424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Field != FieldEnd; ++Field) { 4434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if ((*Field)->getIdentifier() || !(*Field)->isBitField()) 4444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++InitializableMembers; 4454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 44639ba4aeca296b1c9f04bde7d9d3cbbf129f1abd3Argyrios Kyrtzidis if (structDecl->isUnion()) 447f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return std::min(InitializableMembers, 1); 448f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return InitializableMembers - structDecl->hasFlexibleArrayMember(); 4490cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4500cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4518ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckImplicitInitList(const InitializedEntity &Entity, 452987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, 4534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType T, unsigned &Index, 4544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 455eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 456eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 4570cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff int maxElements = 0; 4581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4590cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (T->isArrayType()) 4600cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numArrayElements(T); 461fb87b89fc9eb103e19fb8e4b925c23f0bd091b99Douglas Gregor else if (T->isRecordType()) 4620cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numStructUnionElements(T); 463b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman else if (T->isVectorType()) 464183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall maxElements = T->getAs<VectorType>()->getNumElements(); 4650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff else 4660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff assert(0 && "CheckImplicitInitList(): Illegal type"); 467b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 468402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman if (maxElements == 0) { 4690820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(ParentIList->getInit(Index)->getLocStart(), 470402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman diag::err_implicit_empty_initializer); 4714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 472402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman hadError = true; 473402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman return; 474402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman } 475402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman 4764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Build a structured initializer list corresponding to this subobject. 4774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredSubobjectInitList 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = getStructuredSubobjectInit(ParentIList, Index, T, StructuredList, 4791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredIndex, 480ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor SourceRange(ParentIList->getInit(Index)->getSourceRange().getBegin(), 481ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor ParentIList->getSourceRange().getEnd())); 4824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredSubobjectInitIndex = 0; 4834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 4844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Check the element types and build the structural subobject. 48587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned StartIndex = Index; 486987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson CheckListElementTypes(Entity, ParentIList, T, 487987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredSubobjectInitList, 489eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredSubobjectInitIndex, 490eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 49187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned EndIndex = (Index == StartIndex? StartIndex : Index - 1); 492a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor StructuredSubobjectInitList->setType(T); 493a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor 494ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor // Update the structured sub-object initializer so that it's ending 49587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor // range corresponds with the end of the last initializer it used. 49687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (EndIndex < ParentIList->getNumInits()) { 4971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation EndLoc 49887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor = ParentIList->getInit(EndIndex)->getSourceRange().getEnd(); 49987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor StructuredSubobjectInitList->setRBraceLoc(EndLoc); 50087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 5011e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner 5021e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner // Warn about missing braces. 5031e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner if (T->isArrayType() || T->isRecordType()) { 50447f164e15b9358b51ae65f8249d56842f8750767Tanya Lattner SemaRef.Diag(StructuredSubobjectInitList->getLocStart(), 50547f164e15b9358b51ae65f8249d56842f8750767Tanya Lattner diag::warn_missing_braces) 5061e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner << StructuredSubobjectInitList->getSourceRange() 507849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(StructuredSubobjectInitList->getLocStart(), 508849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor "{") 509849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(SemaRef.PP.getLocForEndOfToken( 5101dcd061f7209f227d785043bd4a75e427d851abeTanya Lattner StructuredSubobjectInitList->getLocEnd()), 511849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor "}"); 5121e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner } 5130cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5140cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5158ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckExplicitInitList(const InitializedEntity &Entity, 51646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 5174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 519eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 520eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 521c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman assert(IList->isExplicit() && "Illegal Implicit InitListExpr"); 5224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = StructuredList; 5234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList->setSyntacticForm(IList); 52446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckListElementTypes(Entity, IList, T, /*SubobjectIsDesignatorContext=*/true, 52546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson Index, StructuredList, StructuredIndex, TopLevelObject); 5266398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor QualType ExprTy = T.getNonLValueExprType(SemaRef.Context); 5276398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor IList->setType(ExprTy); 5286398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor StructuredList->setType(ExprTy); 529638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (hadError) 530638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 531c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 532638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (Index < IList->getNumInits()) { 533c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman // We have leftover initializers 534e540858b289b23653bcb23646f135729203635cbEli Friedman if (StructuredIndex == 1 && 535e540858b289b23653bcb23646f135729203635cbEli Friedman IsStringInit(StructuredList->getInit(0), T, SemaRef.Context)) { 5367c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers_in_char_array_initializer; 537e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 5387c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor DK = diag::err_excess_initializers_in_char_array_initializer; 539e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 540e540858b289b23653bcb23646f135729203635cbEli Friedman } 541bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman // Special-case 5420820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 543dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getInit(Index)->getSourceRange(); 544d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman } else if (!T->isIncompleteType()) { 545b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // Don't complain for incomplete types, since we'll get an error 546b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // elsewhere 547eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType CurrentObjectType = StructuredList->getType(); 5481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int initKind = 549eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isArrayType()? 0 : 550eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isVectorType()? 1 : 551eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isScalarType()? 2 : 552eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isUnionType()? 3 : 553eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 4; 5547c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 5557c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers; 556e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 557e540858b289b23653bcb23646f135729203635cbEli Friedman DK = diag::err_excess_initializers; 5580863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman hadError = true; 5590863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman } 5600863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman if (SemaRef.getLangOptions().OpenCL && initKind == 1) { 5610863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman DK = diag::err_excess_initializers; 562e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 563e540858b289b23653bcb23646f135729203635cbEli Friedman } 5647c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 5650820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 566eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << initKind << IList->getInit(Index)->getSourceRange(); 567c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 568c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 569cda25a977e4b7fe4e080b87586410eaeab7b62f6Eli Friedman 570759f25237864f3a3cc23eb01f0c0ce6edcc9342dEli Friedman if (T->isScalarType() && !TopLevelObject) 5710820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init) 572a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor << IList->getSourceRange() 573849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocStart()) 574849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocEnd()); 5750cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5760cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5778ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, 57846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 5791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &DeclType, 58087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool SubobjectIsDesignatorContext, 5814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 583eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 584eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 585c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (DeclType->isScalarType()) { 58646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, DeclType, Index, 58746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 588c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (DeclType->isVectorType()) { 58946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckVectorType(Entity, IList, DeclType, Index, 59046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 591d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor } else if (DeclType->isAggregateType()) { 592d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor if (DeclType->isRecordType()) { 5936217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 5942bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 5954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubobjectIsDesignatorContext, Index, 596eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 597eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 59887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } else if (DeclType->isArrayType()) { 599f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor llvm::APSInt Zero( 6000820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 601f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor false); 602784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson CheckArrayType(Entity, IList, DeclType, Zero, 603784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson SubobjectIsDesignatorContext, Index, 6044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 605ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else 6064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert(0 && "Aggregate that isn't a structure or array?!"); 607613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 608613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 6094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 6100820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 611d162584991885ab004a02573a73ce06422b921fcChris Lattner << DeclType; 612d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 613930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isRecordType()) { 614930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init]p14: 615930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] If the class is an aggregate (8.5.1), and the initializer 616930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // is a brace-enclosed list, see 8.5.1. 617930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 618930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Note: 8.5.1 is handled below; here, we diagnose the case where 619930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // we have an initializer list and a destination type that is not 620930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an aggregate. 621930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // FIXME: In C++0x, this is yet another form of initialization. 6220820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 623930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType << IList->getSourceRange(); 624930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 625930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 6268ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 6278ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 628c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (DeclType->isObjCObjectType()) { 6294d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor SemaRef.Diag(IList->getLocStart(), diag::err_init_objc_class) 6304d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor << DeclType; 6314d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 6320cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 6334d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 6344d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor << DeclType; 6354d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 6360cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 6370cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6380cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6398ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 64046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 6424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 6444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 6456fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 646c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 647c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman unsigned newIndex = 0; 6484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 6491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *newStructuredList 6504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor = getStructuredSubobjectInit(IList, Index, ElemType, 6514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex, 6524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubInitList->getSourceRange()); 65346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 6544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor newStructuredList, newStructuredIndex); 6554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 6564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 65779e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner } else if (Expr *Str = IsStringInit(expr, ElemType, SemaRef.Context)) { 65879e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner CheckStringInit(Str, ElemType, SemaRef); 659f71ae8d8024561f92dd7916363e7a791684563ccChris Lattner UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 6604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 661c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (ElemType->isScalarType()) { 66246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, ElemType, Index, 66346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 664930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 6658ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, ElemType, Index, 6668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 667b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman } else { 6680820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (SemaRef.getLangOptions().CPlusPlus) { 669930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 670930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // All implicit type conversions (clause 4) are considered when 671930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // initializing the aggregate member with an ini- tializer from 672930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an initializer-list. If the initializer can initialize a 673930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // member, the member is initialized. [...] 6741b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson 6751b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson // FIXME: Better EqualLoc? 6761b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson InitializationKind Kind = 6771b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 6781b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 6791b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson 6801b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson if (Seq) { 6811b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Sema::OwningExprResult Result = 6821b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Seq.Perform(SemaRef, Entity, Kind, 6831b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Sema::MultiExprArg(SemaRef, (void **)&expr, 1)); 6841b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson if (Result.isInvalid()) 685930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 6861b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson 6871b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson UpdateStructuredListElement(StructuredList, StructuredIndex, 6881b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Result.takeAs<Expr>()); 689930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 690930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 691930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 692930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 693930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Fall through for subaggregate initialization 694930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 6951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // C99 6.7.8p13: 696930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 697930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // The initializer for a structure or union object that has 698930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // automatic storage duration shall be either an initializer 699930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // list as described below, or a single expression that has 700930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // compatible structure or union type. In the latter case, the 701930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // initial value of the object, including unnamed members, is 702930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // that of the expression. 7036b5374f837f925d99b1a76bc2fe8c98c1698df7fEli Friedman if ((ElemType->isRecordType() || ElemType->isVectorType()) && 7048718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman SemaRef.Context.hasSameUnqualifiedType(expr->getType(), ElemType)) { 705930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 706930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 707930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 708930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 709930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 710930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Fall through for subaggregate initialization 711930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 712930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 713930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 7141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 715930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] Otherwise, if the member is itself a non-empty 716930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // subaggregate, brace elision is assumed and the initializer is 717930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // considered for the initialization of the first member of 718930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // the subaggregate. 719930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (ElemType->isAggregateType() || ElemType->isVectorType()) { 720987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 721930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor StructuredIndex); 722930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 723930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 724930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // We cannot initialize this element, so let 725930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // PerformCopyInitialization produce the appropriate diagnostic. 726ca755fe38f00d63363b3a3ac2a1ae6c1eb2957f9Anders Carlsson SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 727ca755fe38f00d63363b3a3ac2a1ae6c1eb2957f9Anders Carlsson SemaRef.Owned(expr)); 728ca755fe38f00d63363b3a3ac2a1ae6c1eb2957f9Anders Carlsson IList->setInit(Index, 0); 729930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 730930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 731930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 732930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 733930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 734b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 735b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 7368ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 73746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 7386fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 7394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 7410cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 7426fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 74309865a903affa9c08687859d8de65470064c7bc2Eli Friedman if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { 74409865a903affa9c08687859d8de65470064c7bc2Eli Friedman SemaRef.Diag(SubIList->getLocStart(), 74509865a903affa9c08687859d8de65470064c7bc2Eli Friedman diag::warn_many_braces_around_scalar_init) 74609865a903affa9c08687859d8de65470064c7bc2Eli Friedman << SubIList->getSourceRange(); 74709865a903affa9c08687859d8de65470064c7bc2Eli Friedman 74809865a903affa9c08687859d8de65470064c7bc2Eli Friedman CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, 74909865a903affa9c08687859d8de65470064c7bc2Eli Friedman StructuredIndex); 750bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 75105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } else if (isa<DesignatedInitExpr>(expr)) { 7521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(expr->getSourceRange().getBegin(), 75305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor diag::err_designator_for_scalar_init) 75405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << DeclType << expr->getSourceRange(); 75505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 75605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Index; 7574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 75805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return; 7590cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 76005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 761c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson Sema::OwningExprResult Result = 762a1635d9b468709d47b6c533cc82bdabf34f560b8Eli Friedman SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 763a1635d9b468709d47b6c533cc82bdabf34f560b8Eli Friedman SemaRef.Owned(expr)); 764c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson 765b571924f32590f026889f227f03570e59e5c29b7Chandler Carruth Expr *ResultExpr = 0; 766c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson 767c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson if (Result.isInvalid()) 768bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman hadError = true; // types weren't compatible. 769c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson else { 770c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson ResultExpr = Result.takeAs<Expr>(); 771c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson 772c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson if (ResultExpr != expr) { 773c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson // The type was promoted, update initializer list. 774c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson IList->setInit(Index, ResultExpr); 775c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson } 77605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 7774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (hadError) 7784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 7794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else 780c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 7810cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 782bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman } else { 7830820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_empty_scalar_initializer) 784dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getSourceRange(); 785bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman hadError = true; 7864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 7874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 788bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 7890cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 7900cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 7910cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 7928ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 7938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 794930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 795930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 796930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 797930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (Index < IList->getNumInits()) { 798930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor Expr *expr = IList->getInit(Index); 799930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (isa<InitListExpr>(expr)) { 8000820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 801930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType << IList->getSourceRange(); 802930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 803930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 804930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 805930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 8061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 807930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 808a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson Sema::OwningExprResult Result = 809a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 810a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson SemaRef.Owned(expr)); 811a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 812a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson if (Result.isInvalid()) 813930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 814a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 815a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson expr = Result.takeAs<Expr>(); 816a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson IList->setInit(Index, expr); 817a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 818930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (hadError) 819930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 820930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor else 821930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 822930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 823930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 824390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 825390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 826390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 827390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 8281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getLocStart(), 829930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor diag::err_init_reference_member_uninitialized) 830930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType 831930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << IList->getSourceRange(); 832930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 833930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 834930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 835930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 836930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 837930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 838930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 8398ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 84046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 8414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 8424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 8434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 8440cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 845183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 8462ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned maxElements = VT->getNumElements(); 8472ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned numEltsInit = 0; 8480cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff QualType elementType = VT->getElementType(); 8491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8502ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (!SemaRef.getLangOptions().OpenCL) { 8518ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 8528ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8538ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8548ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 8558ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Don't attempt to go past the end of the init list 8568ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (Index >= IList->getNumInits()) 8578ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson break; 85846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson 8598ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson ElementEntity.setElementIndex(Index); 8608ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 8618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 8628ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson } 8632ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } else { 8648ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 8658ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8672ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman // OpenCL initializers allows vectors to be constructed from vectors. 8682ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman for (unsigned i = 0; i < maxElements; ++i) { 8692ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman // Don't attempt to go past the end of the init list 8702ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (Index >= IList->getNumInits()) 8712ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman break; 8728ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8738ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson ElementEntity.setElementIndex(Index); 8748ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8752ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman QualType IType = IList->getInit(Index)->getType(); 8762ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (!IType->isVectorType()) { 8778ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 8782ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman StructuredList, StructuredIndex); 8792ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman ++numEltsInit; 8802ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } else { 8813e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman QualType VecType; 882183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const VectorType *IVT = IType->getAs<VectorType>(); 8832ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned numIElts = IVT->getNumElements(); 8843e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman 8853e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman if (IType->isExtVectorType()) 8863e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); 8873e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman else 8883e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman VecType = SemaRef.Context.getVectorType(elementType, numIElts, 8893e31552aed7c6e9c915bbc8d457ec84bb4a8d7e9Nate Begeman IVT->getAltiVecSpecific()); 8908ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, VecType, Index, 8912ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman StructuredList, StructuredIndex); 8922ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman numEltsInit += numIElts; 8932ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 8942ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 8950cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 8961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 897f3afbeaa68624178a7a78cc20932351eb1f9f10dJohn Thompson // OpenCL requires all elements to be initialized. 8982ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (numEltsInit != maxElements) 899e12a779bbecb46b7287a87e0ff441e32147d10bbChris Lattner if (SemaRef.getLangOptions().OpenCL) 9002ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SemaRef.Diag(IList->getSourceRange().getBegin(), 9012ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman diag::err_vector_incorrect_num_initializers) 9022ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman << (numEltsInit < maxElements) << maxElements << numEltsInit; 9030cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 9040cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 9050cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 9068ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 907784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 90887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 9091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 9104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 9114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 9130cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 9140cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 91579e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner if (Expr *Str = IsStringInit(IList->getInit(Index), DeclType, 91679e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 91779e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner CheckStringInit(Str, DeclType, SemaRef); 9184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 9194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 9204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 9214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 9224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 923f71ae8d8024561f92dd7916363e7a791684563ccChris Lattner UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 9240820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 9250cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 9260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 9270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 9280cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 929c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const VariableArrayType *VAT = 9300820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsVariableArrayType(DeclType)) { 931638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 932638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 933638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 9340820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 935dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner diag::err_variable_object_no_init) 936dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << VAT->getSizeExpr()->getSourceRange(); 937638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 9384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 9394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 940638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 941638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 942638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 94305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 9444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 9454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 94605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 94705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (const ConstantArrayType *CAT = 9480820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 94905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 950f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor elementIndex.extOrTrunc(maxElements.getBitWidth()); 951e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 95205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 95305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 95405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 9550820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner QualType elementType = SemaRef.Context.getAsArrayType(DeclType) 956c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner ->getElementType(); 95705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 95805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 95905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 96087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 96187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 96287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 96387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 96487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 96587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 96687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 96787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 9689a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 9694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 970eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 971eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 97205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 97387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 97487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 97587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 976f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 977f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor maxElements.extend(elementIndex.getBitWidth()); 978f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 979f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor elementIndex.extend(maxElements.getBitWidth()); 980e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 981f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 98287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 98387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 98487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 98587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 98605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 98705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 98805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 98905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 99005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 99105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 99205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 9930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 99405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 9958ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 996784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 9978ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 9988ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 9998ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 10008ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 100105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 100205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 100305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 100405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 100505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 100605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 10070cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1008587cbdfd95f4b0aaccc14b31f5debe85d5daf7edEli Friedman if (!hadError && DeclType->isIncompleteArrayType()) { 10090cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1010396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1011e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 101205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1013396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1014396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 10150820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1016396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 10170cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1018396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 10191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1020396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 10210cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10220cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 10230cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 10248ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 10252bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 10261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 102787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 10281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 10294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 10304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1031eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1032eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 10336217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 10341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1035b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1036b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1037b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 1038b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1039b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 10401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10413498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 10423498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 10433498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor // Value-initialize the first named member of the union. 10446217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 104517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 10463498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor Field != FieldEnd; ++Field) { 10473498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (Field->getDeclName()) { 10483498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 10493498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor break; 10503498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 10513498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 10523498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 10533498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 10543498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 105505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 105605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 105705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 105805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 10596217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 106017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1061dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 106280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 106305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 106405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 106505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 106605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 106787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 106887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 106987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 107087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 107187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 107287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 107387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 107487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 10759a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 10764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1077eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1078eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 107905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 108005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1081dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 108280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 108380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 108480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 108580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 108605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 108705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 108805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 108905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 109005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 109144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 109205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 109344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1094dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1095dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1096dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1097dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 109805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 109905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1100b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 110144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 11020bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 11034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 110405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1105b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 11060cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 110744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 11088ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 11098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 11108ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 11118ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1112dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 11130bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 11140bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (DeclType->isUnionType()) { 11150bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 11160bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 11170bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 111805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 111905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 11200cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 112144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 112280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 11238e19890c329279c5ac35ab71a35423d429d80165Douglas Gregor if (InitializedSomething && CheckForMissingFields && Field != FieldEnd && 112480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall !Field->getType()->isIncompleteArrayType() && !DeclType->isUnionType()) { 112580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 112680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 112780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 112880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 112980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 113080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 113180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 113280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 113380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 113480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 113580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 113680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 11371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1138a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1139eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1140eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1141eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Handle GNU flexible array initializers. 11421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!TopLevelObject && 1143a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor (!isa<InitListExpr>(IList->getInit(Index)) || 1144a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor cast<InitListExpr>(IList->getInit(Index))->getNumInits() > 0)) { 11451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getInit(Index)->getSourceRange().getBegin(), 1146eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_nonempty) 1147eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << IList->getInit(Index)->getSourceRange().getBegin(); 11480820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1149eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1150eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1151a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1152a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1153a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor } else { 11541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getInit(Index)->getSourceRange().getBegin(), 1155a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor diag::ext_flexible_array_init) 1156a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor << IList->getInit(Index)->getSourceRange().getBegin(); 1157a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1158a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor << *Field; 1159eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1160eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 11618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 11628ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1163987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson 11648ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 11658ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 11668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 11678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 11688ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1169987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 11700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11710cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1172ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1173ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1174ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1175ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1176ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// Field/FieldIndex will be updated to point to the (new) 1177ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// currently-designated field. 1178ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 11791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 11801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1181ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *Field, 1182ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor RecordDecl::field_iterator &FieldIter, 1183ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor unsigned &FieldIndex) { 1184ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1185ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1186ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the path from the current object to the member of the 1187ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // anonymous struct/union (backwards). 1188ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor llvm::SmallVector<FieldDecl *, 4> Path; 1189ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SemaRef.BuildAnonymousStructUnionMemberPath(Field, Path); 11901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1191ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 1192ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor llvm::SmallVector<Designator, 4> Replacements; 1193ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor for (llvm::SmallVector<FieldDecl *, 4>::reverse_iterator 1194ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FI = Path.rbegin(), FIEnd = Path.rend(); 1195ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FI != FIEnd; ++FI) { 1196ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (FI + 1 == FIEnd) 11971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1198ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1199ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1200ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1201ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1202ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1203ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.back().setField(*FI); 1204ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1205ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1206ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1207ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1208ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1209319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1210ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 12111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1212ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Update FieldIter/FieldIndex; 1213ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor RecordDecl *Record = cast<RecordDecl>(Path.back()->getDeclContext()); 121417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldIter = Record->field_begin(); 1215ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldIndex = 0; 121617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator FEnd = Record->field_end(); 1217ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldIter != FEnd; ++FieldIter) { 1218ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (FieldIter->isUnnamedBitfield()) 1219ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor continue; 1220ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1221ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (*FieldIter == Path.back()) 1222ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return; 1223ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1224ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor ++FieldIndex; 1225ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1226ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1227ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor assert(false && "Unable to find anonymous struct/union field"); 1228ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1229ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 123005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 123105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 123205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 123305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 123405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 123505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 12361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 12374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 123805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 123905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 124005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 124105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1242711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1243711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1244711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 124505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 124605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param DeclType The type of the "current object" (C99 6.7.8p17), 124705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 124805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 124987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 125087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 125187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 125205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 125387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 125487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 125587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 125605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 125705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 125805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 125905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 12604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 12614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 12624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 12634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 126405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 12651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 12668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 12679a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 12681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 1269711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 127087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor QualType &CurrentObjectType, 127187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator *NextField, 127287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt *NextElementIndex, 12734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 12744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 127534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned &StructuredIndex, 1276eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1277eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1278711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 127987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 128087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 12816fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 12826fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 12836fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 12846fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 12856fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 12866fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 12876fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 12889a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 12894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 12906fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 12916fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 12926fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 12936fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 12946fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 12956fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 12966fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 129787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 129887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 129905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1300711997184366d584c9c437102cae1e9d9927b986Douglas Gregor bool IsFirstDesignator = (DesigIdx == 0); 13011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((IsFirstDesignator || StructuredList) && 13024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor "Need a non-designated initializer list to start from"); 13034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1304711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 13054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Determine the structural initializer list that corresponds to the 13064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // current subobject. 13074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList = IsFirstDesignator? SyntacticToSemantic[IList] 13081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 1309ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor StructuredList, StructuredIndex, 13104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange(D->getStartLocation(), 13114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DIE->getSourceRange().getEnd())); 13124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert(StructuredList && "Expected a structured initializer list"); 13134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 131487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 131587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 131687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 131787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 131887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 131987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 132087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 132187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 132287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 13231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 13246217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 132587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 132687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 132787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 132887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 13290820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 13300820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner << SemaRef.getLangOptions().CPlusPlus << CurrentObjectType; 133187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 133287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 133387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 133487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 13354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 13364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 13374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1338ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 133987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 13404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 13411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 134217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 134317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 13444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 13454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 13464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 13474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1348ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (KnownField == *Field || Field->getIdentifier() == FieldName) 13494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 13504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 13514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 135287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 135387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 13544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1355ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1356ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1357ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1358ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 13591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 136017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1361c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 13624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1363c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1364c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1365c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor LookupResult R(SemaRef, FieldName, D->getFieldLoc(), 1366c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Sema::LookupMemberName); 1367aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (SemaRef.CorrectTypo(R, /*Scope=*/0, /*SS=*/0, RT->getDecl(), false, 1368aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Sema::CTC_NoKeywords) && 1369c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor (ReplacementField = R.getAsSingle<FieldDecl>()) && 1370c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ReplacementField->getDeclContext()->getLookupContext() 1371c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ->Equals(RT->getDecl())) { 1372c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), 1373c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1374c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType << R.getLookupName() 1375849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), 1376849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor R.getLookupName().getAsString()); 137767dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor SemaRef.Diag(ReplacementField->getLocation(), 137867dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor diag::note_previous_decl) 137967dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor << ReplacementField->getDeclName(); 1380c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1381c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1382c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1383c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1384c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1385c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1386c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else if (!KnownField) { 1387c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Determine whether we found a field at all. 1388c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ReplacementField = dyn_cast<FieldDecl>(*Lookup.first); 1389c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1390c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1391c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 13924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 13930820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 13944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 13951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 13964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1397ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1398ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1399ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1400c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1401c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!KnownField && 1402c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor cast<RecordDecl>((ReplacementField)->getDeclContext()) 1403c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ->isAnonymousStructOrUnion()) { 1404c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Handle an field designator that refers to a member of an 1405c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // anonymous struct or union. 1406c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, 1407c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ReplacementField, 1408c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field, FieldIndex); 1409c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor D = DIE->getDesignator(DesigIdx); 1410c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else if (!KnownField) { 1411c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1412c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1413c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1414c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1415c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1416c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1417c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1418c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1419c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (ReplacementField == *Field || 1420c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1421c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1422c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1423c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1424c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1425c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1426ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } else if (!KnownField && 1427ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor cast<RecordDecl>((*Field)->getDeclContext()) 14284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ->isAnonymousStructOrUnion()) { 1429ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, *Field, 1430ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Field, FieldIndex); 1431ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor D = DIE->getDesignator(DesigIdx); 143287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 14334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 14344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 14354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 14360bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 14374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 14380bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 14390bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 14404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 144187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Update the designator with the field declaration. 14424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor D->setField(*Field); 14431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 14454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this field. 14464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (FieldIndex >= StructuredList->getNumInits()) 14470820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 14484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1449eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1450eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1451eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1452711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1453eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1454eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 14551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr::Designator *NextD 1456711997184366d584c9c437102cae1e9d9927b986Douglas Gregor = DIE->getDesignator(DesigIdx + 1); 14571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(NextD->getStartLocation(), 1458eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_designator_into_flexible_array_member) 14591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << SourceRange(NextD->getStartLocation(), 1460eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor DIE->getSourceRange().getEnd()); 14610820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1462eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1463eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1464eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1465eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1466eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (!hadError && !isa<InitListExpr>(DIE->getInit())) { 1467eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 14680820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(DIE->getInit()->getSourceRange().getBegin(), 1469eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_needs_braces) 1470eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << DIE->getInit()->getSourceRange(); 14710820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1472eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1473eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1474eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1475eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1476eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Handle GNU flexible array initializers. 14771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Invalid && !TopLevelObject && 1478eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor cast<InitListExpr>(DIE->getInit())->getNumInits() > 0) { 14791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(DIE->getSourceRange().getBegin(), 1480eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_nonempty) 1481eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << DIE->getSourceRange().getBegin(); 14820820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1483eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1484eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1485eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1486eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1487eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1488eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1489eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1490eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1491eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1492eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1493eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1494eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1495eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1496eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 14978ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 14988ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 14998ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 15008ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1501eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 15028ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1503eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1504eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1505eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1506eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1507eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1508eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1509eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1510eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1511eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1512eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1513eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1514eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType FieldType = (*Field)->getType(); 1515eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 15169a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 15179a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 15188ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 15198ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 15209a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson FieldType, 0, 0, Index, 15219a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1522eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1523eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1524eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 152587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 152687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 152787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 152887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 15294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 153005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 153187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 153287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 153387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 153487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 153587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 15364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 153787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 153887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 153905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 154034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 154134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 154234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1543ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1544ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1545ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1546ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 154787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 154887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 15492bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson 15508ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 15514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 155287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 155387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 155405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 155587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 155687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 155787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 155887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 155987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 156087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 156187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 156287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 156387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 156487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 156587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 156687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 156787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 156887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 156987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 15700820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 157187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 15720820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 157387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor << CurrentObjectType; 157487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 157587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 157687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 157705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 157887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 157934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 158034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 158187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 15823bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedStartIndex = IndexExpr->EvaluateAsInt(SemaRef.Context); 158334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 158434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 158587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 15863bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 15871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 15893bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DIE->getArrayRangeStart(*D)->EvaluateAsInt(SemaRef.Context); 15901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 15913bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DIE->getArrayRangeEnd(*D)->EvaluateAsInt(SemaRef.Context); 159287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 159334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 15943bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (DesignatedStartIndex.getZExtValue() !=DesignatedEndIndex.getZExtValue()) 1595a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 159687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 159705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 159887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 159987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 160034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 160134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 160234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 160334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 160434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 16050820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IndexExpr->getSourceRange().getBegin(), 160687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor diag::err_array_designator_too_large) 160734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 160887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor << IndexExpr->getSourceRange(); 160987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 161087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 161105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 161234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 161334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 161434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 161534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 16163bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 16173bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 161834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 161934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 162034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 162105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 16221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 16244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 162534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 16261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 162734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 162834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 162934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 163034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 163134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 163234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 163334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 163434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 16359a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 16369a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 16378ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 16389a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 163934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 164034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 164134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 164234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 16439a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 16449a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 16458ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 16469a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementType, 0, 0, Index, 16479a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 1648eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 1649eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 165034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 165187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 165234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 165334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 165434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 165534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 165687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 165787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 165887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 165987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 166087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 166134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 16624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 166387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 166487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 16651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 166634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 166734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 166834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 166987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 167005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 16718ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 1672784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 16734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 16741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 167505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 167605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 16774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 16784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 16794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 16804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 16814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 16824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 16834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 16844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 16854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 16864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 16874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = SyntacticToSemantic[IList]; 16884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 16894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 16901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 16924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 16934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 16944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 16954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 16964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 16974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 16984c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 16991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 17004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 17014c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 17021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 17034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 17044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 17054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 17061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 1707ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 17084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 17091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(ExistingInit->getSourceRange().getBegin(), 17104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 171154f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 17124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 17134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 1716709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 1717709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitRange.getBegin(), 0, 0, 1718ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 1719ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 17206398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor Result->setType(CurrentObjectType.getNonLValueExprType(SemaRef.Context)); 17214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1722fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 1723fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 172408457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 172508457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (!StructuredList) 172608457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 172708457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor else if (Index < IList->getNumInits()) { 172808457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) 172908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 173008457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 173108457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 17321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 1733fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 1734fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 1735fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 1736fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 1737fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 173808457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (NumInits && NumElements > NumInits) 1739fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 1740fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 1741183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 1742fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 17436217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 1744fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 1745fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 1746fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 1747fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 17481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 174917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 1750fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 1751fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 175208457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (NumElements < NumInits) 1753fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = IList->getNumInits(); 1754fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 1755709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 1756fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 17574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 17584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 17594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 1760709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 17614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 17624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 17634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 17644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 17674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 17684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 17704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 17714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 17724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 17734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 17744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 17754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 17764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 17774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1778709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 1779709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 17804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 17811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(expr->getSourceRange().getBegin(), 17824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 17834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 17841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(PrevInit->getSourceRange().getBegin(), 17854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 178654f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 17874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 17884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 17914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 17924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 179305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 179405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// value. This is essentailly just a wrapper around 17953bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 179605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 179705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// failure. Returns true if there was an error, false otherwise. If 179805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// everything went okay, Value will receive the value of the constant 179905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// expression. 18001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic bool 18013bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 180205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation Loc = Index->getSourceRange().getBegin(); 180305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 180405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 18053bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (S.VerifyIntegerConstantExpression(Index, &Value)) 18063bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return true; 18073bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 18083bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 18093bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 181005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 181105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 181253d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 181305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return false; 181405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 181505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 181605c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorSema::OwningExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 181705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation Loc, 1818eeae8f072748affce25ab4064982626361293390Douglas Gregor bool GNUSyntax, 181905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor OwningExprResult Init) { 182005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 182105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 182205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 182305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::SmallVector<ASTDesignator, 32> Designators; 182405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::SmallVector<Expr *, 32> InitExpressions; 182505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 182605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 182705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 182805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 182905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 183005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 18311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 183205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 183305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 183405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 183505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 183605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 183705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 18389ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (!Index->isTypeDependent() && 18399ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor !Index->isValueDependent() && 18409ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, Index, IndexValue)) 184105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 184205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 184305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 18441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 184505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 184605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 184705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 184805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 184905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 185005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 185105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 185205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 185305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 185405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 185505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 18569ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 18579ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 18589ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 18599ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 18609ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if ((!StartDependent && 18619ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, StartIndex, StartValue)) || 18629ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor (!EndDependent && 18639ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, EndIndex, EndValue))) 186405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 1865d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 1866d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 18679ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 18689ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 18699ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 1870d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor EndValue.extend(StartValue.getBitWidth()); 1871d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 1872d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor StartValue.extend(EndValue.getBitWidth()); 1873d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 1874c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 1875d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 1877d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 1878d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 1879d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 1880d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 18811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 1882d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 1883d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 1884d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 1885d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 1886d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 188705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 188805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 188905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 189005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 189105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 189205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 189405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 189505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 189705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 189805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 1900beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 1901beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 1902beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad InitExpressions.data(), InitExpressions.size(), 1903e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson Loc, GNUSyntax, Init.takeAs<Expr>()); 190405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 190505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 1906c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 1907cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregorbool Sema::CheckInitList(const InitializedEntity &Entity, 1908cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *&InitList, QualType &DeclType) { 1909cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker CheckInitList(*this, Entity, InitList, DeclType); 1910c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor if (!CheckInitList.HadError()) 1911c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitList = CheckInitList.getFullyStructuredList(); 1912c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 1913c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor return CheckInitList.HadError(); 1914c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor} 191587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 1916cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 1917cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 1918cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 191939da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 1920cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 1921cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 1922d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson : Parent(&Parent), Index(Index) 1923cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 1924d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 1925d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 1926d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 1927d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } else { 1928d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 1929d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = Parent.getType()->getAs<VectorType>()->getElementType(); 1930d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 193120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 193220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 193320093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 1934711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 1935711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 193620093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 193720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 193820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 1939711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 1940711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 1941711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 1942711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson 1943d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 194420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 194520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 194620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 194799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 194899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 194999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Parameter: 1950a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor if (!VariableOrMember) 1951a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor return DeclarationName(); 1952a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor // Fall through 1953a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 1954a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 195599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 195699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 195799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 195899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 195999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 196018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 196199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 196299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 1963d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 1964d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 1965310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 196699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 196799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 196899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 196999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Silence GCC warning 197099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 197199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 197299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 19737abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 19747abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 19757abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 19767abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Parameter: 19777abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 19787abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 19797abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 19807abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 19817abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 19827abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 19837abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 19847abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 1985d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 1986d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 1987310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 19887abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 19897abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 19907abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 19917abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor // Silence GCC warning 19927abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 19937abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 19947abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 19953c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregorbool InitializedEntity::allowsNRVO() const { 19963c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor switch (getKind()) { 19973c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Result: 19983c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Exception: 19993c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return LocAndNRVO.NRVO; 20003c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 20013c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Variable: 20023c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Parameter: 20033c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Member: 20043c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_New: 20053c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Temporary: 20063c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Base: 20073c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_ArrayElement: 20083c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_VectorElement: 2009310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 20103c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor break; 20113c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor } 20123c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 20133c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return false; 20143c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor} 20153c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 201620093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 201720093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 201820093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 201920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 202020093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 202120093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 202220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 202320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 2024906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 202520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 202620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 202720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 2028523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 202920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 203020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 2031906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 203220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 2033d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 203451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 203571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 203618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2037cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 2038569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 203920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 204020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 204120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 204220093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 204320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 204420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 204520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2046b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 2047b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return getKind() == ReferenceBinding && Steps.back().Kind == SK_BindReference; 2048b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2049b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2050b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2051b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor if (getKind() != FailedSequence) 2052b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2053b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2054b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2055b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2056b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2057b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2058b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2059b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2060b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2061b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2062b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2063b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2064b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2065b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2066b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2067b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2068b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 206972a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 2070b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2071b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2072b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2073b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2074b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2075b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2076b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2077b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2078b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2079b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2080b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2081d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2082d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2083d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2084d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 208520093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddAddressOverloadResolutionStep( 20866bb8017bb9e828d118e15e59d71c66bba323c364John McCall FunctionDecl *Function, 20876bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found) { 208820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 208920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 209020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 20919aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 20926bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 209320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 209420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 209520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 209620093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 2097906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::ResultCategory Category) { 209820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 2099906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl switch (Category) { 2100906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case ImplicitCastExpr::RValue: S.Kind = SK_CastDerivedToBaseRValue; break; 2101906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case ImplicitCastExpr::XValue: S.Kind = SK_CastDerivedToBaseXValue; break; 2102906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case ImplicitCastExpr::LValue: S.Kind = SK_CastDerivedToBaseLValue; break; 2103906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl default: llvm_unreachable("No such category"); 2104906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 210520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 210620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 210720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 210820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 210920093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddReferenceBindingStep(QualType T, 211020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 211120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 211220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 211320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 211420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 211520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 211620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2117523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2118523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2119523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2120523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2121523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2122523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2123523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 212403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedmanvoid InitializationSequence::AddUserConversionStep(FunctionDecl *Function, 21259aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl, 212603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman QualType T) { 212720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 212820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 212903981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 21309aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 21319aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 213220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 213320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 213420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 213520093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 2136906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::ResultCategory Category) { 213720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 2138906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl switch (Category) { 2139906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case ImplicitCastExpr::RValue: 2140906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionRValue; 2141906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2142906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case ImplicitCastExpr::XValue: 2143906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionXValue; 2144906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2145906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case ImplicitCastExpr::LValue: 2146906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionLValue; 2147906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2148906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl default: llvm_unreachable("No such category"); 2149906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 215020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 215120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 215220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 215320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 215420093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 215520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 215620093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 215720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 215820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 215920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 216020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 216120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 216220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 216320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2164d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2165d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2166d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2167d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2168d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2169d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2170d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 217151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregorvoid 217251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas GregorInitializationSequence::AddConstructorInitializationStep( 217351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor, 2174b13b737a2450167c82e148590e8019b839ce6b98John McCall AccessSpecifier Access, 217551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor QualType T) { 217651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 217751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Kind = SK_ConstructorInitialization; 217851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 21799aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 21809aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 218151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 218251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 218351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 218471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 218571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 218671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 218771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 218871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 218971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 219071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 219118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 219218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 219318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 219418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 219518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 219618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 219718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2198cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2199cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2200cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2201cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2202cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2203cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2204cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2205569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregorvoid InitializationSequence::AddObjCObjectConversionStep(QualType T) { 2206569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Step S; 2207569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Kind = SK_ObjCObjectConversion; 2208569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Type = T; 2209569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Steps.push_back(S); 2210569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor} 2211569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 221220093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 221320093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 221420093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = FailedSequence; 221520093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 221620093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 221720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 221820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 221920093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 222020093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 222120093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 222220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 222320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt list initialization (C++0x [dcl.init.list]) 2224d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorstatic void TryListInitialization(Sema &S, 222520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 222620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 222720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitListExpr *InitList, 222820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2229d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We only perform rudimentary checking of list 2230d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // initializations at this point, then assume that any list 2231d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // initialization of an array, aggregate, or scalar will be 223236c28db83d2141ca4e74c4d2e92be5a3a772e2c3Sebastian Redl // well-formed. When we actually "perform" list initialization, we'll 2233d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // do all of the necessary checking. C++0x initializer lists will 2234d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // force us to perform more checking here. 2235d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ListInitialization); 2236d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2237d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 2238d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2239d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // C++ [dcl.init]p13: 2240d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If T is a scalar type, then a declaration of the form 2241d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2242d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // T x = { a }; 2243d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2244d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // is equivalent to 2245d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2246d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // T x = a; 2247d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (DestType->isScalarType()) { 2248d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (InitList->getNumInits() > 1 && S.getLangOptions().CPlusPlus) { 2249d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 2250d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 2251d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 2252d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2253d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume scalar initialization from a single value works. 2254d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isAggregateType()) { 2255d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume aggregate initialization works. 2256d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isVectorType()) { 2257d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume vector initialization works. 2258d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isReferenceType()) { 2259d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: C++0x defines behavior for this. 2260d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 2261d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 2262d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isRecordType()) { 2263d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: C++0x defines behavior for this 2264d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_InitListBadDestinationType); 2265d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 2266d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2267d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Add a general "list initialization" step. 2268d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.AddListInitializationStep(DestType); 226920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 227020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 227120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 227220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 227320093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 227420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 227520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 227620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 227720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowRValues, 227820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2279d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 228020093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 228120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 228220093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 228320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 228420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 228520093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 2286569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion; 228720093b4bf698f292c664676987541d5103b65b15Douglas Gregor assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 2288569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T1, T2, DerivedToBase, 2289569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor ObjCConversion) && 229020093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 229160cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 2292569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor (void)ObjCConversion; 229320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 229420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 229520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 229620093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 229720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 229820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 229920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 230020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 230120093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 230220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 230320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 23046b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && 23056b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T1, 0)) { 230620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 230720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 230820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 2309572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall 231020093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 2311e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(T1RecordDecl); 231220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 23139aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 23149aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 23159aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 231620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 231720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 23189aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 231920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 232020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 232120093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 232220093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 23239aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 232420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 232520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 232620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 232720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 23289aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 232986820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 233020093b4bf698f292c664676987541d5103b65b15Douglas Gregor &Initializer, 1, CandidateSet); 233120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 23329aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 233386820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall &Initializer, 1, CandidateSet); 233420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 233520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 233620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2337572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) 2338572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 233920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 23406b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor const RecordType *T2RecordType = 0; 23416b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if ((T2RecordType = T2->getAs<RecordType>()) && 23426b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T2, 0)) { 234320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 234420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 234520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 234620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 234720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the type we are converting to. If we are allowed to 234820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // convert to an rvalue, take the type that the destination type 234920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // refers to. 235020093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType ToType = AllowRValues? cv1T1 : DestType; 235120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2352eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 235320093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 2354eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 2355eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 235620093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 235720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 235820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 235920093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 236020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 236120093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 236220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 236320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 236420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 236520093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 23664680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Conv = cast<CXXConversionDecl>(D); 236720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 236820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 236920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 237020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 237120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Do we need to make sure that we only consider conversion 237220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // candidates with reference-compatible results? That might be needed to 237320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 237420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if ((AllowExplicit || !Conv->isExplicit()) && 237520093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 237620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 23779aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 237886820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 237920093b4bf698f292c664676987541d5103b65b15Douglas Gregor ToType, CandidateSet); 238020093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 23819aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 2382692f85c1d217c8c3cdc06d884ad61b101c75c856Douglas Gregor Initializer, ToType, CandidateSet); 238320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 238420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 238520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2386572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) 2387572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 238820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 238920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 239020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 239120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform overload resolution. If it fails, return the failed result. 239220093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 239320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (OverloadingResult Result 239420093b4bf698f292c664676987541d5103b65b15Douglas Gregor = S.BestViableFunction(CandidateSet, DeclLoc, Best)) 239520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 239603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 239720093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 239803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 239903981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 240020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 240120093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 240220093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 240320093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 240403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 240503981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 24069aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 24076398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context)); 240803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 240903981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Determine whether we need to perform derived-to-base or 241003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 2411906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::ResultCategory Category = ImplicitCastExpr::RValue; 2412906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl if (T2->isLValueReferenceType()) 2413906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Category = ImplicitCastExpr::LValue; 2414906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl else if (const RValueReferenceType *RRef = T2->getAs<RValueReferenceType>()) 2415906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Category = RRef->getPointeeType()->isFunctionType() ? 241666d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl ImplicitCastExpr::LValue : ImplicitCastExpr::XValue; 2417906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 241820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 2419569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool NewObjCConversion = false; 242020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 24216398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, T1, 24226398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context), 2423569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor NewDerivedToBase, NewObjCConversion); 2424a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 2425a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 2426a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 2427a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 2428a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 2429a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 2430a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 2431a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 2432a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 2433a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 2434a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 243520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 243620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 243720093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2.getNonReferenceType().getQualifiers()), 2438569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Category); 2439569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (NewObjCConversion) 2440569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 2441569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, 2442569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T2.getNonReferenceType().getQualifiers())); 2443569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 244420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 2445906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Sequence.AddQualificationConversionStep(cv1T1, Category); 244620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 244720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 244820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 244920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 245020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 24514680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl/// \brief Attempt reference initialization (C++0x [dcl.init.ref]) 245220093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryReferenceInitialization(Sema &S, 245320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 245420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 245520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 245620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 245720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ReferenceBinding); 24584680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 2459d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 246020093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 24615535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 24625535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 246320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 24645535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 24655535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 246620093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 24674680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 246820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 246920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 247020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 247120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) { 24726bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 247320093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Fn = S.ResolveAddressOfOverloadedFunction(Initializer, 247420093b4bf698f292c664676987541d5103b65b15Douglas Gregor T1, 24756bb8017bb9e828d118e15e59d71c66bba323c364John McCall false, 24766bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 247720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Fn) { 247820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 247920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 248020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 24814680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 24826bb8017bb9e828d118e15e59d71c66bba323c364John McCall Sequence.AddAddressOverloadResolutionStep(Fn, Found); 248320093b4bf698f292c664676987541d5103b65b15Douglas Gregor cv2T2 = Fn->getType(); 248420093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv2T2.getUnqualifiedType(); 248520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 24864680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 248720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 248820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 248920093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 249020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 2491569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion = false; 24924680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Expr::Classification InitCategory = Initializer->Classify(S.Context); 249320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 2494569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase, 2495569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor ObjCConversion); 24964680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 249720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 249820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A reference to type "cv1 T1" is initialized by an expression of type 249920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 250020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 250120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the reference is an lvalue reference and the initializer 250220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 25034680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // Note the analogous bullet points for rvlaue refs to functions. Because 25044680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // there are no function rvalues in C++, rvalue refs to functions are treated 25054680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // like lvalue refs. 250620093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 25074680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl bool T1Function = T1->isFunctionType(); 25084680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (isLValueRef || T1Function) { 25094680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (InitCategory.isLValue() && 251020093b4bf698f292c664676987541d5103b65b15Douglas Gregor RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification) { 251120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - is an lvalue (but is not a bit-field), and "cv1 T1" is 251220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 251320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 2514de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 251520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 2516de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 2517de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 2518de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 251920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 252020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 25215535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth S.Context.getQualifiedType(T1, T2Quals), 2522906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::LValue); 2523569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 2524569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 2525569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 2526569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 25275535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 2528906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Sequence.AddQualificationConversionStep(cv1T1,ImplicitCastExpr::LValue); 2529de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 2530093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 2531de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 253220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 253320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 253420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 253520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - has a class type (i.e., T2 is a class type), where T1 is not 253620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-related to T2, and can be implicitly converted to an 253720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 253820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // with "cv3 T3" (this conversion is selected by enumerating the 253920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 254020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 25414680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // If we have an rvalue ref to function type here, the rhs must be 25424680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // an rvalue. 25434680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && 25444680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isLValueRef || InitCategory.isRValue())) { 254520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 254620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 25474680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl /*AllowRValues=*/isRValueRef, 254820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 254920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 255020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 25511d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 25521d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 25531d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 25541d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 25551d31833450e6d2947a33cb0840d87661d92eec07John McCall } 255620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 255720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 25584680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 255920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the reference shall be an lvalue reference to a 256020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 256120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // shall be an rvalue reference and the initializer expression shall 25624680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // be an rvalue or have a function type. 25634680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // We handled the function type stuff above. 2564ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor if (!((isLValueRef && T1Quals.hasConst() && !T1Quals.hasVolatile()) || 25654680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isRValueRef && InitCategory.isRValue()))) { 256620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 256720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 256820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 256920093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 257020093b4bf698f292c664676987541d5103b65b15Douglas Gregor else if (isLValueRef) 25714680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Sequence.SetFailed(InitCategory.isLValue() 257220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 257320093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 257420093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 257520093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 257620093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 257720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed( 257820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 25794680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 258020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 258120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 25824680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 25834680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // - [If T1 is not a function type], if T2 is a class type and 25844680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (!T1Function && T2->isRecordType()) { 258566d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl bool isXValue = InitCategory.isXValue(); 258620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - the initializer expression is an rvalue and "cv1 T1" is 258720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2", or 25884680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (InitCategory.isRValue() && 258920093b4bf698f292c664676987541d5103b65b15Douglas Gregor RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification) { 2590523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 2591523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 2592523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 2593523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 2594523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 2595523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 2596523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 2597523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 2598523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 2599523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (!S.getLangOptions().CPlusPlus0x) 2600523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 2601523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 260220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 260320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 26045535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth S.Context.getQualifiedType(T1, T2Quals), 260566d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl isXValue ? ImplicitCastExpr::XValue 260666d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl : ImplicitCastExpr::RValue); 2607569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 2608569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 2609569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 2610569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 26115535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 261266d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl Sequence.AddQualificationConversionStep(cv1T1, 261366d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl isXValue ? ImplicitCastExpr::XValue 261466d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl : ImplicitCastExpr::RValue); 261566d0acd5f1010625df9987a89b8cc4df3d378d5eSebastian Redl Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/!isXValue); 261620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 261720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 26184680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 261920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - T1 is not reference-related to T2 and the initializer expression 262020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // can be implicitly converted to an rvalue of type "cv3 T3" (this 262120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversion is selected by enumerating the applicable conversion 262220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions (13.3.1.6) and choosing the best one through overload 262320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // resolution (13.3)), 262420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 262520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 262620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 262720093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 262820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 262920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 263020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 263120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 263220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 263320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 263420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 263520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 263620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 263720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 263820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 263920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 264020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 264120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer expression is an rvalue, with T2 an array type, 264220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // and "cv1 T1" is reference-compatible with "cv2 T2," the reference 264320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // is bound to the object represented by the rvalue (see 3.10). 264420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: How can an array type be reference-compatible with anything? 264520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Don't we mean the element types of T1 and T2? 264620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 264720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, a temporary of type “cv1 T1” is created and initialized 264820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 264920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // copy initialization (8.5). The reference is then bound to the 265020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 2651369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 265220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 265320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 265420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct); 2655369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 2656369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 2657369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 2658369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall if (S.TryImplicitConversion(Sequence, TempEntity, Initializer, 2659369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ false, 2660369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicit, 2661369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*FIXME:InOverloadResolution=*/false)) { 266220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 266320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 266420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 266520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 266618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 266718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 266818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 266918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 267018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 267118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 267220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 267320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 267420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 267520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 267620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 267720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 26785535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 26795535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 268020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Related && 26815535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 268220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 268320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 268420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 268520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 268620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 268720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 268820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 268920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 269020093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 269120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// (C++ [dcl.init.string], C99 6.7.8). 269220093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryStringLiteralInitialization(Sema &S, 269320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 269420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 269520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 269620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2697cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Sequence.setSequenceKind(InitializationSequence::StringInit); 2698d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 269920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 270020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 270120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 270220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// enumerates the constructors of the initialized entity and performs overload 270320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// resolution to select the best. 270420093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryConstructorInitialization(Sema &S, 270520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 270620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 270720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs, 270871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor QualType DestType, 270920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 27102f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ConstructorInitialization); 271151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 271251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Build the candidate set directly in the initialization sequence 271351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // structure, so that it will persist if we fail. 271451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 271551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CandidateSet.clear(); 271651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 271751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 271851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // explicit conversion operators. 271951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct || 272051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Kind.getKind() == InitializationKind::IK_Value || 27212f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Kind.getKind() == InitializationKind::IK_Default); 2722087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor 2723087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // The type we're constructing needs to be complete. 2724087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 272572a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_Incomplete); 2726087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor return; 2727087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 272851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 272951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 273051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // to see if one is suitable. 273151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor const RecordType *DestRecordType = DestType->getAs<RecordType>(); 273251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor assert(DestRecordType && "Constructor initialization requires record type"); 273351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXRecordDecl *DestRecordDecl 273451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 273551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 273651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 2737e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 273851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Con != ConEnd; ++Con) { 27399aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 27409aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 2741d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor bool SuppressUserConversions = false; 2742d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 274351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Find the constructor (which may be a template). 274451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor = 0; 27459aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 274651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (ConstructorTmpl) 274751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 274851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 2749d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor else { 27509aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 2751d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 2752d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // If we're performing copy initialization using a copy constructor, we 2753d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // suppress user-defined conversions on the arguments. 2754d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // FIXME: Move constructors? 2755d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Copy && 2756d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Constructor->isCopyConstructor()) 2757d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions = true; 2758d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor } 275951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 276051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (!Constructor->isInvalidDecl() && 276199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (AllowExplicit || !Constructor->isExplicit())) { 276251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (ConstructorTmpl) 27639aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 276486820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 2765d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Args, NumArgs, CandidateSet, 2766d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 276751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor else 27689aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 2769d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Args, NumArgs, CandidateSet, 2770d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 277151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 277251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 277351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 277451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceLocation DeclLoc = Kind.getLocation(); 277551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 277651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Perform overload resolution. If it fails, return the failed result. 277751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 277851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (OverloadingResult Result 277951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor = S.BestViableFunction(CandidateSet, DeclLoc, Best)) { 278051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Sequence.SetOverloadFailure( 278151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor InitializationSequence::FK_ConstructorOverloadFailed, 278251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Result); 278351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return; 278451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 27859db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 27869db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // C++0x [dcl.init]p6: 27879db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // If a program calls for the default initialization of an object 27889db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // of a const-qualified type T, T shall be a class type with a 27899db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // user-provided default constructor. 27909db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 27919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getType().isConstQualified() && 27929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor cast<CXXConstructorDecl>(Best->Function)->isImplicit()) { 27939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 27949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor return; 27959db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 27969db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 279751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Add the constructor initialization step. Any cv-qualification conversion is 279851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // subsumed by the initialization. 27992f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Sequence.AddConstructorInitializationStep( 280051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor cast<CXXConstructorDecl>(Best->Function), 28019aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Best->FoundDecl.getAccess(), 280218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DestType); 280320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 280420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 280571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 280671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorstatic void TryValueInitialization(Sema &S, 280771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 280871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 280971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor InitializationSequence &Sequence) { 281071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // C++ [dcl.init]p5: 281171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 281271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 2813d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 281471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 281571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 281671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor while (const ArrayType *AT = S.Context.getAsArrayType(T)) 281771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor T = AT->getElementType(); 281871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 281971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 282071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 282171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is a class type (clause 9) with a user-declared 282271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // constructor (12.1), then the default constructor for T is 282371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // called (and the initialization is ill-formed if T has no 282471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // accessible default constructor); 282571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 282671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // FIXME: we really want to refer to a single subobject of the array, 282771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // but Entity doesn't have a way to capture that (yet). 282871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (ClassDecl->hasUserDeclaredConstructor()) 282971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 283071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 283116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // -- if T is a (possibly cv-qualified) non-union class type 283216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // without a user-provided constructor, then the object is 283316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // zero-initialized and, if T’s implicitly-declared default 283416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // constructor is non-trivial, that constructor is called. 2835465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if ((ClassDecl->getTagKind() == TTK_Class || 2836ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor ClassDecl->getTagKind() == TTK_Struct)) { 2837d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 283816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 283916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 284071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 284171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 284271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 2843d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 284471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ZeroInitialization); 284571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 284671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 284799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 284899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 284999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 285099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 285199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 285299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 285399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 285499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 285599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 285699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 2857d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 285899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor while (const ArrayType *Array = S.Context.getAsArrayType(DestType)) 285999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor DestType = Array->getElementType(); 286099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 286199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 286299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 286399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 286460c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType->isRecordType() && S.getLangOptions().CPlusPlus) { 286599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, 286699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence); 286799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 286899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 286999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 287099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.setSequenceKind(InitializationSequence::NoInitialization); 287199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 287299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 287399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // a const-qualified type T, T shall be a class type with a user-provided 287499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 287560c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType.isConstQualified() && S.getLangOptions().CPlusPlus) 287699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 287799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 287899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 287920093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 288020093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 288120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 288220093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryUserDefinedConversion(Sema &S, 288320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 288420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 288520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 288620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 28874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.setSequenceKind(InitializationSequence::UserDefinedConversion); 28884a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 2889d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 28904a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 28914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 28924a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 28934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 28944a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 28954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 28964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 28974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 28984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 28994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29004a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 29014a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 29024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 29034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 29054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 29064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 29074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 29084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 29094a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 2910087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Try to complete the type we're converting to. 2911087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 2912087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 2913e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 2914087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Con != ConEnd; ++Con) { 2915087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor NamedDecl *D = *Con; 2916087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 2917d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 2918087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Find the constructor (which may be a template). 2919087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor CXXConstructorDecl *Constructor = 0; 2920087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor FunctionTemplateDecl *ConstructorTmpl 2921087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor = dyn_cast<FunctionTemplateDecl>(D); 29224a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 2923087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>( 2924087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 29254712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor else 2926087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>(D); 2927087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor 2928087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!Constructor->isInvalidDecl() && 2929087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 2930087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (ConstructorTmpl) 2931087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 2932087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor /*ExplicitArgs*/ 0, 2933087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor &Initializer, 1, CandidateSet, 29344712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 2935087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor else 2936087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 2937087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor &Initializer, 1, CandidateSet, 29384712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 2939087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 2940087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 2941087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 29424a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 2943cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2944cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 2945cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 29464a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 29474a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 29484a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 2949cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 295033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 295133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 295233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 295333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 295433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 29554a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 2956eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 295733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 2958eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 295933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman E = Conversions->end(); 296033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 296133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 296233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 296333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 296433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 296533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman 296633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 296733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 29684a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 296933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 29704a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 297132daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 297233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman 297333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 297433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 29759aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 297686820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 297733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 297833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 29799aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 298086820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 298133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 29824a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 29834a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 29844a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 29854a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29864a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Perform overload resolution. If it fails, return the failed result. 29874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 29881d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 29894a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = S.BestViableFunction(CandidateSet, DeclLoc, Best)) { 29904a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 29914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor InitializationSequence::FK_UserConversionOverloadFailed, 29924a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 29934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 29944a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 29951d31833450e6d2947a33cb0840d87661d92eec07John McCall 29964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 29974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 29994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 30004a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // subsumed by the initialization. 30019aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType); 30024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 30034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 30044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 30054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 30065291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor QualType ConvType = Function->getCallResultType(); 30073fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 30083fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If we're converting to a class type, there may be an copy if 30093fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 30103fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 30113fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 30123fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 30133fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 30143fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType); 30153fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 30163fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 30174a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 30183fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType); 30193fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 30203fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 30213fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 30224a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 30234a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 30244a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 30251d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 30264a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 30274a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 30284a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 302920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 303020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3031369371ce0c2b0d8051a8089e620eb41513fce9a2John McCallbool Sema::TryImplicitConversion(InitializationSequence &Sequence, 3032369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall const InitializedEntity &Entity, 3033369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall Expr *Initializer, 3034369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall bool SuppressUserConversions, 3035369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall bool AllowExplicitConversions, 3036369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall bool InOverloadResolution) { 303720093b4bf698f292c664676987541d5103b65b15Douglas Gregor ImplicitConversionSequence ICS 3038369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall = TryImplicitConversion(Initializer, Entity.getType(), 3039369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall SuppressUserConversions, 3040369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicitConversions, 3041369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InOverloadResolution); 3042369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall if (ICS.isBad()) return true; 3043369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3044369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall // Perform the actual conversion. 3045d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddConversionSequenceStep(ICS, Entity.getType()); 3046369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall return false; 304720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 304820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 304920093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 305020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 305120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 305220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 30535769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 30545769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 305520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ASTContext &Context = S.Context; 305620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 305720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 305820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The semantics of initializers are as follows. The destination type is 305920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // the type of the object or reference being initialized and the source 306020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 306120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // defined when the initializer is a braced-init-list or when it is a 306220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 3063d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 306420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 306520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isDependentType() || 306620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr::hasAnyTypeDependentArguments(Args, NumArgs)) { 306720093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 306820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 306920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 307020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 307120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 307220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 307399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 307420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 307520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 307620093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 307720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 307820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 307920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is a braced-init-list, the object is 308020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // list-initialized (8.5.4). 308120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 308220093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryListInitialization(S, Entity, Kind, InitList, *this); 3083d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 308420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 308520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 308620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 308720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 308820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 308920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 309020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 309120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 309220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 309320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 309420093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_TooManyInitsForReference); 309520093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 309620093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 309720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 309820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 309920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 310020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is an array of characters, an array of 310120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // char16_t, an array of char32_t, or an array of wchar_t, and the 310220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer is a string literal, see 8.5.2. 310320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Initializer && IsStringInit(Initializer, DestType, Context)) { 310420093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 310520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 310620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 310720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 310820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 310999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 311099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 311120093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryValueInitialization(S, Entity, Kind, *this); 311220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 311320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 311420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 311599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 311699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Default){ 311799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor TryDefaultInitialization(S, Entity, Kind, *this); 311899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 311999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 312018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 312120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, if the destination type is an array, the program is 312220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 312320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (const ArrayType *AT = Context.getAsArrayType(DestType)) { 312420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (AT->getElementType()->isAnyCharacterType()) 312520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 312620093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 312720093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_ArrayNeedsInitList); 312820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 312920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 313020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3131cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3132cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman // Handle initialization in C 3133cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman if (!S.getLangOptions().CPlusPlus) { 3134cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman setSequenceKind(CAssignment); 3135cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman AddCAssignmentStep(DestType); 3136cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 3137cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 313820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 313920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 314020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 314120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initialization is direct-initialization, or if it is 314220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // copy-initialization where the cv-unqualified version of the 314320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // source type is the same class as, or a derived class of, the 314420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 314520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 314620093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 314720093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 314820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 314971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 3150d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(), *this); 315120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise (i.e., for the remaining copy-initialization cases), 315220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 315320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type to the destination type or (when a conversion function is 315420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 315520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 315620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 315720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 315820093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 315920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 316020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 316120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 316299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 316399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SetFailed(FK_TooManyInitsForScalar); 316499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 316599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 316699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 316799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 316820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, if the source type is a (possibly cv-qualified) class 316920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 317099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 317120093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 317220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 317320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 317420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 317520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 31764a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 317720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 317820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer expression to the cv-unqualified version of the 317920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 3180369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall if (S.TryImplicitConversion(*this, Entity, Initializer, 3181369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ true, 3182369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*AllowExplicitConversions*/ false, 3183369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*InOverloadResolution*/ false)) 3184369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall SetFailed(InitializationSequence::FK_ConversionFailed); 3185369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall else 3186369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall setSequenceKind(StandardConversion); 318720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 318820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 318920093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 319020093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (llvm::SmallVectorImpl<Step>::iterator Step = Steps.begin(), 319120093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 319220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 319320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 319420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 319520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 319620093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 319720093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 319820093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 319918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorstatic Sema::AssignmentAction 320018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 320118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 320218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 320318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 320418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 320518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 320618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 3207688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (Entity.getDecl() && 3208688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 3209688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 3210688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 321118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 321218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 321318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 321418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 321518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 321618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Exception: 321718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 321818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("No assignment action for C++-specific initialization"); 321918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 322018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 322118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 322218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 322318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 322418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 322518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 3226d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 3227d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3228310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 322918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 323018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 323118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 323218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Converting; 323318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 323418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 32354154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 32364154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 32372f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 323818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 32391b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 32401b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 32412f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 324218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 324318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 324418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 3245d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3246a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 3247310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 324818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 324918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 325018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 325118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 325218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 325318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 325418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 325518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 325618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 325718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 32584154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 32594154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 32604154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 32614154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 32624154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 32634154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 32644154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 32654154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 32664154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 3267310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 32684154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 32694154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 32704154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 32714154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 32724154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 32734154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 32744154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 32754154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 32764154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 32774154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 32784154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 32794154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 32804154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 3281523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 3282523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 3283523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 3284523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3285523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 3286523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3287523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param T The type of the temporary object, which must either by 3288523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 3289523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3290523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param Enter The entity being initialized. 3291523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3292523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 3293523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3294523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 3295523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 3296523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 3297523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3298523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 3299523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 3300523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 33012f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic Sema::OwningExprResult CopyObject(Sema &S, 3302523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor QualType T, 33032f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor const InitializedEntity &Entity, 3304523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sema::OwningExprResult CurInit, 3305523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor bool IsExtraneousCopy) { 33063fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 33071b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 33082f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor CXXRecordDecl *Class = 0; 3309523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 33102f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 33112f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 33122f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return move(CurInit); 33132f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 33142f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // C++0x [class.copy]p34: 33152f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 33162f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 33172f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 33182f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 33192f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 33202f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 33212f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 33222f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 33232f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 33242f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // 33252f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 33263c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // elision for return statements and throw expressions are handled as part 33273c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // of constructor initialization, while copy elision for exception handlers 33283c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // is handled by the run-time. 33292f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor bool Elidable = CurInitExpr->isTemporaryObject() && 3330523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Context.hasSameUnqualifiedType(T, CurInitExpr->getType()); 333118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation Loc; 333218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 333318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 333418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Loc = Entity.getReturnLoc(); 333518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 333618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 333718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Exception: 333818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Loc = Entity.getThrowLoc(); 333918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 334018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 334118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 33427abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor Loc = Entity.getDecl()->getLocation(); 33437abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor break; 33447abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 33451b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 33461b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 334718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 334818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 33492f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_New: 335018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 3351d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3352310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 33532f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Loc = CurInitExpr->getLocStart(); 33542f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor break; 335518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 3356f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 3357f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor // Make sure that the type we are copying is complete. 3358f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor if (S.RequireCompleteType(Loc, T, S.PDiag(diag::err_temp_copy_incomplete))) 3359f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor return move(CurInit); 3360f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 336118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // Perform overload resolution using the class's copy constructors. 336218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DeclContext::lookup_iterator Con, ConEnd; 33635769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 3364e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(Class); 336518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Con != ConEnd; ++Con) { 33662f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Only consider copy constructors. 336718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(*Con); 336818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (!Constructor || Constructor->isInvalidDecl() || 3369153b3ba7a61f3228fd3a8c67b9bff94db3e13a2eDouglas Gregor !Constructor->isCopyConstructor() || 3370153b3ba7a61f3228fd3a8c67b9bff94db3e13a2eDouglas Gregor !Constructor->isConvertingConstructor(/*AllowExplicit=*/false)) 337118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor continue; 33729aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 33739aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl 33749aa472c45d2bd81b7b52c225e8acc560d716db97John McCall = DeclAccessPair::make(Constructor, Constructor->getAccess()); 33759aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 337686820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall &CurInitExpr, 1, CandidateSet); 33772f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor } 337818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 337918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 338018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (S.BestViableFunction(CandidateSet, Loc, Best)) { 338118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 338218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 338318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 338418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 338557d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext() 338657d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin ? diag::ext_rvalue_to_reference_temp_copy_no_viable 338757d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin : diag::err_temp_copy_no_viable) 33887abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 338918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 3390cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(CandidateSet, Sema::OCD_AllCandidates, 3391cbce60633c9864261105b289473e5a3ed7b4a729John McCall &CurInitExpr, 1); 339257d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin if (!IsExtraneousCopy || S.isSFINAEContext()) 339357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin return S.ExprError(); 339457d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin return move(CurInit); 339518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 339618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 339718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 33987abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 339918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 3400cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(CandidateSet, Sema::OCD_ViableCandidates, 3401cbce60633c9864261105b289473e5a3ed7b4a729John McCall &CurInitExpr, 1); 340218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 340318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 340418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 340518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 34067abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 340718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 340818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 340918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Best->Function->isDeleted(); 341018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 341118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 341218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 34133fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 34143fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(S); 34153fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 3416523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 34179a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 341857d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin Best->FoundDecl.getAccess(), IsExtraneousCopy); 3419523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 3420523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 3421523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 3422523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 34232559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 34242559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 34252559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 34262559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 34272559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 34282559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 34292559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 34302559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 34312559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 34322559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 34332559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 34342559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.PDiag(diag::err_call_incomplete_argument))) 34352559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 34362559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 34372559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 34382559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 34392559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 34402559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 34412559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 3442523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 3443523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 3444523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 34453fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 34463fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 3447523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 3448523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 34493fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (S.CompleteConstructorCall(Constructor, 34503fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sema::MultiExprArg(S, 34513fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor (void **)&CurInitExpr, 34523fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 1), 34533fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 34543fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return S.ExprError(); 34553fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 3456b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // Actually perform the constructor call. 3457b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 3458b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor move_arg(ConstructorArgs)); 3459b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor 3460b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // If we're supposed to bind temporaries, do so. 3461b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) 3462b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 3463b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor return move(CurInit); 346418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 346520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3466a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 3467a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 3468a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 3469a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 3470a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 3471a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 3472a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 3473a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 3474a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 3475a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 3476a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 3477a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 3478a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 3479a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 348020093b4bf698f292c664676987541d5103b65b15Douglas GregorAction::OwningExprResult 348120093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 348220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 348320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 3484d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Action::MultiExprArg Args, 3485d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 348620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind == FailedSequence) { 348720093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 348820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Diagnose(S, Entity, Kind, (Expr **)Args.release(), NumArgs); 348920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 349020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 349120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 349220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind == DependentSequence) { 3493d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 3494d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 3495d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 3496d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 3497d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 3498d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 3499d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 3500d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 3501d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 3502d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 3503d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 3504d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 3505d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 3506d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 3507d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 3508d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (isa<InitListExpr>((Expr *)Args.get()[0])) { 3509d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 3510d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 3511d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 3512d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 3513d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 3514d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 3515d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 3516d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 3517d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 3518d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 3519d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3520d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3521d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 3522d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 3523d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 3524d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 3525d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 3526d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 3527d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3528d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3529d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3530d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3531d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3532085446216a198ced4183ec1571e1ae51c2920e98Eli Friedman if (Kind.getKind() == InitializationKind::IK_Copy || Kind.isExplicitCast()) 353320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Sema::OwningExprResult(S, Args.release()[0]); 353420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 353567fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor if (Args.size() == 0) 353667fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor return S.Owned((Expr *)0); 353767fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor 353820093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 353920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.Owned(new (S.Context) ParenListExpr(S.Context, 354020093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation(), 354120093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Expr **)Args.release(), 354220093b4bf698f292c664676987541d5103b65b15Douglas Gregor NumArgs, 354320093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation())); 354420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 354520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 354699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (SequenceKind == NoInitialization) 354799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 354899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 3549d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 3550d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 3551a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 3552a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 3553d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 3554a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 3555d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 355620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 355799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sema::OwningExprResult CurInit = S.Owned((Expr *)0); 355899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 355999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(!Steps.empty() && "Cannot have an empty initialization sequence"); 356099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 356199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // For initialization steps that start with a single initializer, 356299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 356399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 356499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 356518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 356618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 3567906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 356818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 356918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 357018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 3571523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 357218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 357318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 3574906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 357518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 357618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 357718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 357818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 3579cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 3580569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 358118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 358218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = Sema::OwningExprResult(S, ((Expr **)(Args.get()))[0]->Retain()); 358318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (CurInit.isInvalid()) 358418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 358518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 358618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 358718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 358818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 358918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 359020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 359120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 359220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Walk through the computed steps for the initialization sequence, 359320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 359416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 359520093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 359620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 359720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 359820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 359920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 360020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *CurInitExpr = (Expr *)CurInit.get(); 360199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor QualType SourceType = CurInitExpr? CurInitExpr->getType() : QualType(); 360220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 360320093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 360420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 360520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Overload resolution determined which function invoke; update the 360620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 36076bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.CheckAddressOfMemberAccess(CurInitExpr, Step->Function.FoundDecl); 3608b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation()); 3609b13b737a2450167c82e148590e8019b839ce6b98John McCall CurInit = S.FixOverloadedFunctionReference(move(CurInit), 36106bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 36119aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 361220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 361320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 361420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 3615906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 361620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 361720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 361820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 361920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3620f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXCastPath BasePath; 36215cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 362220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 362320093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 362420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 362520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInitExpr->getLocStart(), 36265cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson CurInitExpr->getSourceRange(), 36275cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 362820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 362920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 36306fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (S.BasePathInvolvesVirtualBase(BasePath)) { 36316fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor QualType T = SourceType; 36326fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const PointerType *Pointer = T->getAs<PointerType>()) 36336fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor T = Pointer->getPointeeType(); 36346fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const RecordType *RecordTy = T->getAs<RecordType>()) 36356fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor S.MarkVTableUsed(CurInitExpr->getLocStart(), 36366fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor cast<CXXRecordDecl>(RecordTy->getDecl())); 36376fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor } 36386fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 3639906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::ResultCategory Category = 3640906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_CastDerivedToBaseLValue ? 3641906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::LValue : 3642906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_CastDerivedToBaseXValue ? 3643906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::XValue : 3644906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::RValue); 3645f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 3646f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Step->Type, 3647f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastExpr::CK_DerivedToBase, 3648f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall (Expr*)CurInit.release(), 3649f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall &BasePath, Category)); 365020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 365120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 365220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 365320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 365420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (FieldDecl *BitField = CurInitExpr->getBitField()) { 365520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 365620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 3657d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 365820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 365920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << CurInitExpr->getSourceRange(); 366020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 366120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 366220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3663a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 3664093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson if (CurInitExpr->refersToVectorElement()) { 366541593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 3666093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 3667093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 3668093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << CurInitExpr->getSourceRange(); 3669a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 3670093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson return S.ExprError(); 3671093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 3672093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson 367320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 367420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 367520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 367620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckExceptionSpecCompatibility(CurInitExpr, DestType)) 367720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 36783aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 367920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 36803aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 368120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 3682a64a869312066ff6119d1d7ae03f88ce499e3f82Anders Carlsson // Reference binding does not have any corresponding ASTs. 3683a64a869312066ff6119d1d7ae03f88ce499e3f82Anders Carlsson 368420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 368520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckExceptionSpecCompatibility(CurInitExpr, DestType)) 368620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 368720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 368820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 368920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3690523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 3691523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Step->Type, Entity, move(CurInit), 3692523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 3693523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 3694523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 369520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 369620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 369720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 369820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastExpr::CastKind CastKind = CastExpr::CK_Unknown; 369918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 37009aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 37019aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 37024154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 3703f0e0b17d0504d25b4673de015cf7401e2296323cDouglas Gregor bool IsLvalue = false; 3704b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 370520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 370620093b4bf698f292c664676987541d5103b65b15Douglas Gregor ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(S); 370720093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation Loc = CurInitExpr->getLocStart(); 370820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 3709b13b737a2450167c82e148590e8019b839ce6b98John McCall 371020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 371120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 371220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 371320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::MultiExprArg(S, 371420093b4bf698f292c664676987541d5103b65b15Douglas Gregor (void **)&CurInitExpr, 371520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 1), 371620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 371720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 371820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 371920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the an expression that constructs a temporary. 372020093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 372120093b4bf698f292c664676987541d5103b65b15Douglas Gregor move_arg(ConstructorArgs)); 372220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 372320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 3724b13b737a2450167c82e148590e8019b839ce6b98John McCall 37259a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 37269aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 3727b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 372820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 372920093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastKind = CastExpr::CK_ConstructorConversion; 373018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 373118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 373218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 373318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 37344154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 37354154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 373620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 373720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 3738b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 3739f0e0b17d0504d25b4673de015cf7401e2296323cDouglas Gregor IsLvalue = Conversion->getResultType()->isLValueReferenceType(); 374058e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall S.CheckMemberOperatorAccess(Kind.getLocation(), CurInitExpr, 0, 37419aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 3742b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 3743b13b737a2450167c82e148590e8019b839ce6b98John McCall 374420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Should we move this initialization into a separate 374520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 374620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 37475fccd36204f11c8491325038e6ffcc784399098eDouglas Gregor if (S.PerformObjectArgumentInitialization(CurInitExpr, /*Qualifier=*/0, 37486bb8017bb9e828d118e15e59d71c66bba323c364John McCall FoundFn, Conversion)) 374920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 375020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 375120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Do a little dance to make sure that CurInit has the proper 375220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // pointer. 375320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); 375420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 375520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 37566bb8017bb9e828d118e15e59d71c66bba323c364John McCall CurInit = S.Owned(S.BuildCXXMemberCallExpr(CurInitExpr, FoundFn, 37576bb8017bb9e828d118e15e59d71c66bba323c364John McCall Conversion)); 375820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 375920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 376020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 376120093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastKind = CastExpr::CK_UserDefinedConversion; 37624154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 37634154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 376420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 376520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 37662f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor bool RequiresCopy = !IsCopy && 37672f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor getKind() != InitializationSequence::ReferenceBinding; 37682f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy || shouldBindAsTemporary(Entity)) 376918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 37704154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor else if (CreatedObject && shouldDestroyTemporary(Entity)) { 37714154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CurInitExpr = static_cast<Expr *>(CurInit.get()); 37724154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor QualType T = CurInitExpr->getType(); 37734154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 3774db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor CXXDestructorDecl *Destructor 3775db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); 37764154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.CheckDestructorAccess(CurInitExpr->getLocStart(), Destructor, 37774154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 37784154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.MarkDeclarationReferenced(CurInitExpr->getLocStart(), Destructor); 37794154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 37804154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 37814154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 378220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInitExpr = CurInit.takeAs<Expr>(); 3783906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl // FIXME: xvalues 3784f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 3785f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInitExpr->getType(), 3786f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CastKind, CurInitExpr, 0, 3787906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl IsLvalue ? ImplicitCastExpr::LValue : ImplicitCastExpr::RValue)); 378818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 37892f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 3790523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 3791523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor move(CurInit), /*IsExtraneousCopy=*/false); 3792906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 379320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 379420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3795906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 379620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 3797906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 3798906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionRValue: { 379920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 3800906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::ResultCategory Category = 3801906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_QualificationConversionLValue ? 3802906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::LValue : 3803906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_QualificationConversionXValue ? 3804906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::XValue : 3805906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl ImplicitCastExpr::RValue); 3806906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.ImpCastExprToType(CurInitExpr, Step->Type, CastExpr::CK_NoOp, Category); 380720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); 380820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit = S.Owned(CurInitExpr); 380920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3810906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 3811906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 3812f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 3813f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 3814f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor 3815f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor if (S.PerformImplicitConversion(CurInitExpr, Step->Type, *Step->ICS, 3816f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor Sema::AA_Converting, IgnoreBaseAccess)) 381720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 381820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 381920093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); 3820f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor CurInit = S.Owned(CurInitExpr); 382120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3822f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 3823f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor 3824d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 3825d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor InitListExpr *InitList = cast<InitListExpr>(CurInitExpr); 3826d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType Ty = Step->Type; 3827cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (S.CheckInitList(Entity, InitList, ResultType? *ResultType : Ty)) 3828d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return S.ExprError(); 3829d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3830d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 3831d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit = S.Owned(InitList); 3832d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 3833d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 383451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 383551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: { 3836d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor unsigned NumArgs = Args.size(); 383751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor 38389aa472c45d2bd81b7b52c225e8acc560d716db97John McCall = cast<CXXConstructorDecl>(Step->Function.Function); 38393c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 384051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Build a call to the selected constructor. 384151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(S); 38420a2eb5685aaef78ce33e84dd8c70ad3ff31b0e11Fariborz Jahanian SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) 38430a2eb5685aaef78ce33e84dd8c70ad3ff31b0e11Fariborz Jahanian ? Kind.getEqualLoc() 38440a2eb5685aaef78ce33e84dd8c70ad3ff31b0e11Fariborz Jahanian : Kind.getLocation(); 384551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 384651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Determine the arguments required to actually perform the constructor 384751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // call. 384851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (S.CompleteConstructorCall(Constructor, move(Args), 384951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Loc, ConstructorArgs)) 385051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return S.ExprError(); 385151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 3852d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor // Build the expression that constructs a temporary. 385391be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor if (Entity.getKind() == InitializedEntity::EK_Temporary && 3854d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor NumArgs != 1 && // FIXME: Hack to work around cast weirdness 385591be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct || 385691be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Kind.getKind() == InitializationKind::IK_Value)) { 385791be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor // An explicitly-constructed temporary, e.g., X(1, 2). 385891be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor unsigned NumExprs = ConstructorArgs.size(); 385991be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Expr **Exprs = (Expr **)ConstructorArgs.take(); 386010f8e319569c8b8b4603d8a72ce01a7a01502c85Fariborz Jahanian S.MarkDeclarationReferenced(Loc, Constructor); 386191be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 386291be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Constructor, 386391be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Entity.getType(), 386410f8e319569c8b8b4603d8a72ce01a7a01502c85Fariborz Jahanian Loc, 386591be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Exprs, 386691be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor NumExprs, 38671c63b9c15d48cb8c833a4b2d6fd6c496c0766e88Douglas Gregor Kind.getParenRange().getEnd(), 38681c63b9c15d48cb8c833a4b2d6fd6c496c0766e88Douglas Gregor ConstructorInitRequiresZeroInit)); 386972e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson } else { 387072e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::ConstructionKind ConstructKind = 387172e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::CK_Complete; 387272e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson 387372e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson if (Entity.getKind() == InitializedEntity::EK_Base) { 387472e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? 387572e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::CK_VirtualBase : 387672e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::CK_NonVirtualBase; 387772e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson } 38783c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 38793c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // If the entity allows NRVO, mark the construction as elidable 38803c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // unconditionally. 38813c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor if (Entity.allowsNRVO()) 38823c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 38833c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor Constructor, /*Elidable=*/true, 38843c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor move_arg(ConstructorArgs), 38853c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor ConstructorInitRequiresZeroInit, 38863c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor ConstructKind); 38873c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor else 38883c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 38893c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor Constructor, 38903c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor move_arg(ConstructorArgs), 38913c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor ConstructorInitRequiresZeroInit, 38923c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor ConstructKind); 389372e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson } 389451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (CurInit.isInvalid()) 389551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return S.ExprError(); 3896b13b737a2450167c82e148590e8019b839ce6b98John McCall 3897b13b737a2450167c82e148590e8019b839ce6b98John McCall // Only check access if all of that succeeded. 38989a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 38999aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.FoundDecl.getAccess()); 3900b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Loc); 390118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 39022f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (shouldBindAsTemporary(Entity)) 390318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 39044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 390551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 390651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 390771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 390871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 390916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 391016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 391116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (NextStep != StepEnd && 391216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor NextStep->Kind == SK_ConstructorInitialization) { 391316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 391416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 391516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 391616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 391716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor S.getLangOptions().CPlusPlus && 391816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 3919ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor CurInit = S.Owned(new (S.Context) CXXScalarValueInitExpr(Step->Type, 392071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getBegin(), 392171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 392216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 392371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 392416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 392571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 392671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 392718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 392818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 392918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType SourceType = CurInitExpr->getType(); 393018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 393118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.CheckSingleAssignmentConstraints(Step->Type, CurInitExpr); 3932aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 3933aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 3934aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 3935aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 3936aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExpr) 3937aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 3938aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 3939aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 3940a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 394118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 394218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 3943a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor CurInitExpr, 3944a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 3945a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 3946a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 394718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 3948a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 3949a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 395018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 395118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit.release(); 395218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.Owned(CurInitExpr); 395318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 395418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 3955cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3956cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 3957cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 3958cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman CheckStringInit(CurInitExpr, ResultType ? *ResultType : Ty, S); 3959cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 3960cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 3961569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 3962569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 3963569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.ImpCastExprToType(CurInitExpr, Step->Type, 3964569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor CastExpr::CK_ObjCObjectLValueCast, 3965569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.CastCategory(CurInitExpr)); 3966569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor CurInit.release(); 3967569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor CurInit = S.Owned(CurInitExpr); 3968569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 396920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 397020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 397120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 397220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return move(CurInit); 397320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 397420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 397520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 397620093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 397720093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 397820093b4bf698f292c664676987541d5103b65b15Douglas Gregorbool InitializationSequence::Diagnose(Sema &S, 397920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 398020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 398120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 398220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind != FailedSequence) 398320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 398420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3985d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 398620093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 398720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 39889db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 39899db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 39909db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 39919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 39929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 39939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 39949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 399520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 399620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 399720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 399820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 399920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 400020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 400120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 400220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 40036bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 40046bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 400520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ResolveAddressOfOverloadedFunction(Args[0], 400620093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 40076bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 40086bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 400920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 40106bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 401120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 401220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 40134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 401420093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 401520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 401618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 401718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 401818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 401918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 402018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 402118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 402218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 402318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 402418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4025cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(FailedCandidateSet, Sema::OCD_ViableCandidates, 4026cbce60633c9864261105b289473e5a3ed7b4a729John McCall Args, NumArgs); 402720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 402820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 402920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 403020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 403120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 403220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 4033cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(FailedCandidateSet, Sema::OCD_AllCandidates, 4034cbce60633c9864261105b289473e5a3ed7b4a729John McCall Args, NumArgs); 403520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 403620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 403720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 403820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 403920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 404020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 404120093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 404220093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Ovl = S.BestViableFunction(FailedCandidateSet, 404320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind.getLocation(), 404420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Best); 404520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 404620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 404720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Best->Function->isDeleted(); 404820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 40499f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 405020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 405120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 405220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 405320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 405420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 40559f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 405620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 405720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 405820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 405920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 406020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 406120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 406220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), 406320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 406420093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 406520093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 4066ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 406720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 406820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 406920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 407020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 407120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 407220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 407320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 407420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 407520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 407620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 407720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 407820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 407920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 408020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 408120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 408220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 408320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 408420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 408520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 408620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 408720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Args[0]->isLvalue(S.Context) == Expr::LV_Valid) 408820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 408920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 409020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 409120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 409220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ConversionFailed: 409318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_init_conversion_failed) 409418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 409520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 409620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Args[0]->isLvalue(S.Context) == Expr::LV_Valid) 409720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 409820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 4099d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4100d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4101d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 410299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 410399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 410499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 410599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor R = SourceRange(InitList->getInit(1)->getLocStart(), 410699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 410799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor else 410899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor R = SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 4109d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4110d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 411199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor << /*scalar=*/2 << R; 4112d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4113d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4114d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4115d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 4116d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 4117d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 4118d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4119d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4120d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 4121d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 4122d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 4123d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 412451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 412551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 412651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 412751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 412851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ArgsRange = SourceRange(Args[0]->getLocStart(), 412951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 413051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 413151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 413251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 413351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 413451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 413551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 413651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 413781201626aa08bcc9d05c8b3c6a1d38a7d577c3ceJohn McCall S.PrintOverloadCandidates(FailedCandidateSet, 4138cbce60633c9864261105b289473e5a3ed7b4a729John McCall Sema::OCD_ViableCandidates, Args, NumArgs); 413951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 414051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 414151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 41429db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 41439db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 41449db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 41459db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 41469db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 41479db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 41489db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 41499db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 41509db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 41519db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 41529db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 41539db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 41549db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 41559db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 41569db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 41579db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 41589db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 41599db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 41609db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 41619db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 41629db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 41639db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 41649db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 41659db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 41669db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 41679db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 41689db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 41699db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 41709db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 41719db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 41729db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 41739db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 41749db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Record->getDecl()->getLocation(), 41759db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 41769db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 41779db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 41789db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 41799db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 41809db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 418151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 418251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 4183cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(FailedCandidateSet, Sema::OCD_AllCandidates, 4184cbce60633c9864261105b289473e5a3ed7b4a729John McCall Args, NumArgs); 418551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 418651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 418751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 418851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 418951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << true << DestType << ArgsRange; 419051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 419151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadingResult Ovl = S.BestViableFunction(FailedCandidateSet, 419251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Kind.getLocation(), 419351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Best); 419451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (Ovl == OR_Deleted) { 419551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 419651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << Best->Function->isDeleted(); 419751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } else { 419851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 419951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 420051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 420151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 420251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 420351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 420451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 420551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 420651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 420751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 420851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 420999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 421099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 42119db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 42129db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 42139db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 42149db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 42159db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 42169db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 42179db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 42189db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 42199db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 42209db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 42219db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 42229db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 42239db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 42249db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 42259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 42269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 42279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 422899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 422972a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor 423072a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 423172a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor S.RequireCompleteType(Kind.getLocation(), DestType, 423272a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor diag::err_init_incomplete_type); 423372a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 423420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 423520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 4236a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 423720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 423820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 423918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4240de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump(llvm::raw_ostream &OS) const { 4241de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 4242de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 4243de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 4244de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 4245de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 4246de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 4247de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4248de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4249de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 4250de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 4251de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4252de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4253de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 4254de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 4255de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4256de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4257de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 4258de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 4259de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4260de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4261de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 4262de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 4263de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4264de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4265de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 4266de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 4267de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4268de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4269de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 4270de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 4271de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4272de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4273de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 4274de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 4275de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4276de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4277de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 4278de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 4279de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4280de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4281de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 4282de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 4283de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4284de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4285de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 4286de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 4287de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4288de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4289de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 4290de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 4291de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4292de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4293de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 4294de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 4295de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4296de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4297de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 4298de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 4299de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4300de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4301de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 4302de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 4303de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4304de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4305de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 4306de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 4307de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4308de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4309de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 4310de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 4311de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 431272a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor 431372a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 431472a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor OS << "initialization of incomplete type"; 431572a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 4316de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4317de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 4318de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4319de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4320de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4321de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 4322de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Dependent sequence: "; 4323de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4324de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4325de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case UserDefinedConversion: 4326de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "User-defined conversion sequence: "; 4327de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4328de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4329de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ConstructorInitialization: 4330de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Constructor initialization sequence: "; 4331de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4332de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4333de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ReferenceBinding: 4334de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Reference binding: "; 4335de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4336de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4337de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ListInitialization: 4338de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "List initialization: "; 4339de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4340de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4341de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ZeroInitialization: 4342de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Zero initialization\n"; 4343de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4344de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4345de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case NoInitialization: 4346de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "No initialization\n"; 4347de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4348de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4349de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case StandardConversion: 4350de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Standard conversion: "; 4351de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4352de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4353de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case CAssignment: 4354de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment: "; 4355de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4356de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4357de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case StringInit: 4358de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "String initialization: "; 4359de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4360de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4361de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4362de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 4363de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 4364de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 4365de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4366de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4367de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 4368de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4369de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 4370de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4371de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4372de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 4373de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 4374de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4375de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4376906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 4377906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "derived-to-base case (xvalue" << S->Type.getAsString() << ")"; 4378906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 4379906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 4380de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 4381de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 4382de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4383de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4384de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 4385de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 4386de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4387de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4388de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 4389de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 4390de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4391de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4392523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 4393523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 4394523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 4395523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4396de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 4397900fc6388e803868a34b9483510c345e9b49d7ebBenjamin Kramer OS << "user-defined conversion via " << S->Function.Function; 4398de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4399906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 4400de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 4401de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 4402de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4403906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 4404906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "qualification conversion (xvalue)"; 4405906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 4406de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 4407de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 4408de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4409de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4410de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 4411de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 4412de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 4413de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 4414de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4415de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4416de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 4417de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "list initialization"; 4418de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4419de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4420de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 4421de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 4422de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4423de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4424de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 4425de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 4426de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4427de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4428de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 4429de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 4430de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4431de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4432de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 4433de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 4434de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4435569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 4436569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 4437569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor OS << "Objective-C object conversion"; 4438569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 4439de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4440de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4441de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 4442de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4443de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 4444de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 4445de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 4446de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 444718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 444818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 444918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 445018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::OwningExprResult 445118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 445218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 445318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OwningExprResult Init) { 445418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 445518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 445618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 445718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Expr *InitE = (Expr *)Init.get(); 445818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 445918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 446018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 446118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 446218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 446318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 446418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc); 446518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 446618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 446718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Seq.Perform(*this, Entity, Kind, 446818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor MultiExprArg(*this, (void**)&InitE, 1)); 446918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 4470