SemaInit.cpp revision 4154e0b1a5d03cbe4836e381c7d6187b7a0a200c
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 1820093b4bf698f292c664676987541d5103b65b15Douglas Gregor#include "SemaInit.h" 19c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor#include "Lookup.h" 200cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff#include "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); 4610cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff else if (T->isStructureType() || T->isUnionType()) 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); 5262c79281ef66cb5001f0ebadf6b317250c21a1c01Douglas Gregor IList->setType(T.getNonReferenceType()); 5272c79281ef66cb5001f0ebadf6b317250c21a1c01Douglas Gregor StructuredList->setType(T.getNonReferenceType()); 528638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (hadError) 529638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 530c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 531638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (Index < IList->getNumInits()) { 532c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman // We have leftover initializers 533e540858b289b23653bcb23646f135729203635cbEli Friedman if (StructuredIndex == 1 && 534e540858b289b23653bcb23646f135729203635cbEli Friedman IsStringInit(StructuredList->getInit(0), T, SemaRef.Context)) { 5357c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers_in_char_array_initializer; 536e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 5377c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor DK = diag::err_excess_initializers_in_char_array_initializer; 538e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 539e540858b289b23653bcb23646f135729203635cbEli Friedman } 540bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman // Special-case 5410820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 542dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getInit(Index)->getSourceRange(); 543d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman } else if (!T->isIncompleteType()) { 544b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // Don't complain for incomplete types, since we'll get an error 545b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // elsewhere 546eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType CurrentObjectType = StructuredList->getType(); 5471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int initKind = 548eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isArrayType()? 0 : 549eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isVectorType()? 1 : 550eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isScalarType()? 2 : 551eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isUnionType()? 3 : 552eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 4; 5537c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 5547c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers; 555e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 556e540858b289b23653bcb23646f135729203635cbEli Friedman DK = diag::err_excess_initializers; 5570863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman hadError = true; 5580863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman } 5590863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman if (SemaRef.getLangOptions().OpenCL && initKind == 1) { 5600863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman DK = diag::err_excess_initializers; 561e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 562e540858b289b23653bcb23646f135729203635cbEli Friedman } 5637c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 5640820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 565eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << initKind << IList->getInit(Index)->getSourceRange(); 566c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 567c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 568cda25a977e4b7fe4e080b87586410eaeab7b62f6Eli Friedman 569759f25237864f3a3cc23eb01f0c0ce6edcc9342dEli Friedman if (T->isScalarType() && !TopLevelObject) 5700820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init) 571a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor << IList->getSourceRange() 572849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocStart()) 573849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocEnd()); 5740cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5750cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5768ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, 57746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 5781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &DeclType, 57987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool SubobjectIsDesignatorContext, 5804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 582eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 583eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 584c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (DeclType->isScalarType()) { 58546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, DeclType, Index, 58646f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 587c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (DeclType->isVectorType()) { 58846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckVectorType(Entity, IList, DeclType, Index, 58946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 590d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor } else if (DeclType->isAggregateType()) { 591d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor if (DeclType->isRecordType()) { 5926217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 5932bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 5944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubobjectIsDesignatorContext, Index, 595eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 596eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 59787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } else if (DeclType->isArrayType()) { 598f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor llvm::APSInt Zero( 5990820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 600f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor false); 601784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson CheckArrayType(Entity, IList, DeclType, Zero, 602784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson SubobjectIsDesignatorContext, Index, 6034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 604ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else 6054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert(0 && "Aggregate that isn't a structure or array?!"); 606613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 607613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 6084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 6090820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 610d162584991885ab004a02573a73ce06422b921fcChris Lattner << DeclType; 611d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 612930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isRecordType()) { 613930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init]p14: 614930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] If the class is an aggregate (8.5.1), and the initializer 615930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // is a brace-enclosed list, see 8.5.1. 616930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 617930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Note: 8.5.1 is handled below; here, we diagnose the case where 618930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // we have an initializer list and a destination type that is not 619930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an aggregate. 620930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // FIXME: In C++0x, this is yet another form of initialization. 6210820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 622930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType << IList->getSourceRange(); 623930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 624930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 6258ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 6268ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 6270cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 6280cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // In C, all types are either scalars or aggregates, but 6291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // additional handling is needed here for C++ (and possibly others?). 6300cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff assert(0 && "Unsupported initializer type"); 6310cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 6320cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6330cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6348ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 63546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 6374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 6394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 6406fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 641c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 642c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman unsigned newIndex = 0; 6434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 6441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *newStructuredList 6454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor = getStructuredSubobjectInit(IList, Index, ElemType, 6464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex, 6474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubInitList->getSourceRange()); 64846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 6494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor newStructuredList, newStructuredIndex); 6504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 6514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 65279e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner } else if (Expr *Str = IsStringInit(expr, ElemType, SemaRef.Context)) { 65379e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner CheckStringInit(Str, ElemType, SemaRef); 654f71ae8d8024561f92dd7916363e7a791684563ccChris Lattner UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 6554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 656c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (ElemType->isScalarType()) { 65746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, ElemType, Index, 65846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 659930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 6608ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, ElemType, Index, 6618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 662b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman } else { 6630820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (SemaRef.getLangOptions().CPlusPlus) { 664930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 665930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // All implicit type conversions (clause 4) are considered when 666930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // initializing the aggregate member with an ini- tializer from 667930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an initializer-list. If the initializer can initialize a 668930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // member, the member is initialized. [...] 6691b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson 6701b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson // FIXME: Better EqualLoc? 6711b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson InitializationKind Kind = 6721b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 6731b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 6741b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson 6751b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson if (Seq) { 6761b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Sema::OwningExprResult Result = 6771b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Seq.Perform(SemaRef, Entity, Kind, 6781b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Sema::MultiExprArg(SemaRef, (void **)&expr, 1)); 6791b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson if (Result.isInvalid()) 680930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 6811b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson 6821b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson UpdateStructuredListElement(StructuredList, StructuredIndex, 6831b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Result.takeAs<Expr>()); 684930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 685930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 686930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 687930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 688930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Fall through for subaggregate initialization 689930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 6901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // C99 6.7.8p13: 691930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 692930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // The initializer for a structure or union object that has 693930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // automatic storage duration shall be either an initializer 694930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // list as described below, or a single expression that has 695930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // compatible structure or union type. In the latter case, the 696930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // initial value of the object, including unnamed members, is 697930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // that of the expression. 6986b5374f837f925d99b1a76bc2fe8c98c1698df7fEli Friedman if ((ElemType->isRecordType() || ElemType->isVectorType()) && 6998718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman SemaRef.Context.hasSameUnqualifiedType(expr->getType(), ElemType)) { 700930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 701930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 702930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 703930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 704930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 705930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Fall through for subaggregate initialization 706930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 707930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 708930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 7091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 710930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] Otherwise, if the member is itself a non-empty 711930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // subaggregate, brace elision is assumed and the initializer is 712930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // considered for the initialization of the first member of 713930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // the subaggregate. 714930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (ElemType->isAggregateType() || ElemType->isVectorType()) { 715987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 716930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor StructuredIndex); 717930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 718930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 719930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // We cannot initialize this element, so let 720930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // PerformCopyInitialization produce the appropriate diagnostic. 721ca755fe38f00d63363b3a3ac2a1ae6c1eb2957f9Anders Carlsson SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 722ca755fe38f00d63363b3a3ac2a1ae6c1eb2957f9Anders Carlsson SemaRef.Owned(expr)); 723ca755fe38f00d63363b3a3ac2a1ae6c1eb2957f9Anders Carlsson IList->setInit(Index, 0); 724930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 725930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 726930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 727930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 728930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 729b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 730b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 7318ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 73246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 7336fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 7344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 7360cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 7376fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 738c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (isa<InitListExpr>(expr)) { 7390820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 740dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner diag::err_many_braces_around_scalar_init) 741dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getSourceRange(); 742bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman hadError = true; 743bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman ++Index; 7444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 745bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 74605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } else if (isa<DesignatedInitExpr>(expr)) { 7471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(expr->getSourceRange().getBegin(), 74805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor diag::err_designator_for_scalar_init) 74905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << DeclType << expr->getSourceRange(); 75005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 75105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Index; 7524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 75305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return; 7540cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 75505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 756c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson Sema::OwningExprResult Result = 757a1635d9b468709d47b6c533cc82bdabf34f560b8Eli Friedman SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 758a1635d9b468709d47b6c533cc82bdabf34f560b8Eli Friedman SemaRef.Owned(expr)); 759c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson 760b571924f32590f026889f227f03570e59e5c29b7Chandler Carruth Expr *ResultExpr = 0; 761c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson 762c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson if (Result.isInvalid()) 763bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman hadError = true; // types weren't compatible. 764c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson else { 765c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson ResultExpr = Result.takeAs<Expr>(); 766c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson 767c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson if (ResultExpr != expr) { 768c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson // The type was promoted, update initializer list. 769c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson IList->setInit(Index, ResultExpr); 770c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson } 77105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 7724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (hadError) 7734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 7744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else 775c07b8c02f7c54631ab9a9bd7db9f031d3db170caAnders Carlsson UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 7760cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 777bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman } else { 7780820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_empty_scalar_initializer) 779dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getSourceRange(); 780bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman hadError = true; 7814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 7824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 783bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 7840cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 7850cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 7860cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 7878ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 7888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 789930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 790930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 791930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 792930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (Index < IList->getNumInits()) { 793930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor Expr *expr = IList->getInit(Index); 794930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (isa<InitListExpr>(expr)) { 7950820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 796930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType << IList->getSourceRange(); 797930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 798930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 799930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 800930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 8011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 802930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 803a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson Sema::OwningExprResult Result = 804a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 805a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson SemaRef.Owned(expr)); 806a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 807a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson if (Result.isInvalid()) 808930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 809a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 810a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson expr = Result.takeAs<Expr>(); 811a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson IList->setInit(Index, expr); 812a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 813930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (hadError) 814930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 815930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor else 816930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 817930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 818930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 819390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 820390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 821390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 822390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 8231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getLocStart(), 824930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor diag::err_init_reference_member_uninitialized) 825930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType 826930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << IList->getSourceRange(); 827930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 828930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 829930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 830930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 831930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 832930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 833930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 8348ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 83546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 8364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 8374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 8384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 8390cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 840183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 8412ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned maxElements = VT->getNumElements(); 8422ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned numEltsInit = 0; 8430cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff QualType elementType = VT->getElementType(); 8441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8452ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (!SemaRef.getLangOptions().OpenCL) { 8468ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 8478ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8488ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8498ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 8508ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Don't attempt to go past the end of the init list 8518ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (Index >= IList->getNumInits()) 8528ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson break; 85346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson 8548ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson ElementEntity.setElementIndex(Index); 8558ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 8568ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 8578ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson } 8582ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } else { 8598ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 8608ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8622ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman // OpenCL initializers allows vectors to be constructed from vectors. 8632ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman for (unsigned i = 0; i < maxElements; ++i) { 8642ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman // Don't attempt to go past the end of the init list 8652ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (Index >= IList->getNumInits()) 8662ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman break; 8678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8688ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson ElementEntity.setElementIndex(Index); 8698ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 8702ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman QualType IType = IList->getInit(Index)->getType(); 8712ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (!IType->isVectorType()) { 8728ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 8732ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman StructuredList, StructuredIndex); 8742ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman ++numEltsInit; 8752ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } else { 876183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const VectorType *IVT = IType->getAs<VectorType>(); 8772ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman unsigned numIElts = IVT->getNumElements(); 8782ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman QualType VecType = SemaRef.Context.getExtVectorType(elementType, 8792ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman numIElts); 8808ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, VecType, Index, 8812ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman StructuredList, StructuredIndex); 8822ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman numEltsInit += numIElts; 8832ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 8842ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 8850cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 8861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 887f3afbeaa68624178a7a78cc20932351eb1f9f10dJohn Thompson // OpenCL requires all elements to be initialized. 8882ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman if (numEltsInit != maxElements) 889e12a779bbecb46b7287a87e0ff441e32147d10bbChris Lattner if (SemaRef.getLangOptions().OpenCL) 8902ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman SemaRef.Diag(IList->getSourceRange().getBegin(), 8912ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman diag::err_vector_incorrect_num_initializers) 8922ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman << (numEltsInit < maxElements) << maxElements << numEltsInit; 8930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 8940cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 8950cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 8968ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 897784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 89887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 8991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 9004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 9014c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 9030cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 9040cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 90579e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner if (Expr *Str = IsStringInit(IList->getInit(Index), DeclType, 90679e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 90779e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner CheckStringInit(Str, DeclType, SemaRef); 9084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 9094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 9104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 9114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 9124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 913f71ae8d8024561f92dd7916363e7a791684563ccChris Lattner UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 9140820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 9150cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 9160cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 9170cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 9180cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 919c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const VariableArrayType *VAT = 9200820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsVariableArrayType(DeclType)) { 921638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 922638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 923638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 9240820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 925dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner diag::err_variable_object_no_init) 926dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << VAT->getSizeExpr()->getSourceRange(); 927638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 9284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 9294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 930638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 931638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 932638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 93305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 9344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 9354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 93605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 93705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (const ConstantArrayType *CAT = 9380820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 93905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 940f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor elementIndex.extOrTrunc(maxElements.getBitWidth()); 941e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 94205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 94305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 94405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 9450820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner QualType elementType = SemaRef.Context.getAsArrayType(DeclType) 946c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner ->getElementType(); 94705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 94805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 94905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 95087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 95187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 95287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 95387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 95487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 95587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 95687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 95787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 9589a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 9594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 960eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 961eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 96205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 96387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 96487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 96587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 966f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 967f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor maxElements.extend(elementIndex.getBitWidth()); 968f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 969f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor elementIndex.extend(maxElements.getBitWidth()); 970e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 971f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 97287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 97387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 97487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 97587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 97605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 97705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 97805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 97905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 98005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 98105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 98205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 9830cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 98405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 9858ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 986784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 9878ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 9888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 9898ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 9908ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 99105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 99205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 99305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 99405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 99505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 99605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 9970cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 998587cbdfd95f4b0aaccc14b31f5debe85d5daf7edEli Friedman if (!hadError && DeclType->isIncompleteArrayType()) { 9990cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1000396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1001e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 100205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1003396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1004396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 10050820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1006396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 10070cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1008396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 10091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1010396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 10110cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10120cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 10130cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 10148ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 10152bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 10161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 101787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 10181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 10194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 10204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1021eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1022eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 10236217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 10241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1025b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1026b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1027b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 1028b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1029b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 10301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10313498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 10323498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 10333498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor // Value-initialize the first named member of the union. 10346217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 103517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 10363498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor Field != FieldEnd; ++Field) { 10373498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (Field->getDeclName()) { 10383498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 10393498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor break; 10403498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 10413498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 10423498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 10433498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 10443498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 104505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 104605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 104705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 104805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 10496217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 105017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1051dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 105280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 105305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 105405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 105505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 105605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 105787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 105887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 105987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 106087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 106187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 106287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 106387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 106487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 10659a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 10664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1067eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1068eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 106905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 107005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1071dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 107280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 107380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 107480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 107580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 107605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 107705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 107805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 107905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 108005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 108144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 108205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 108344b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1084dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1085dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1086dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1087dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 108805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 108905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1090b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 109144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 10920bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 10934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 109405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1095b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 10960cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 109744b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 10988ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 10998ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 11008ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 11018ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1102dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 11030bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 11040bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (DeclType->isUnionType()) { 11050bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 11060bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 11070bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 110805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 110905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 11100cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 111144b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 111280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 111380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (CheckForMissingFields && Field != FieldEnd && 111480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall !Field->getType()->isIncompleteArrayType() && !DeclType->isUnionType()) { 111580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 111680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 111780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 111880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 111980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 112080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 112180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 112280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 112380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 112480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 112580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 112680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 11271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1128a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1129eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1130eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1131eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Handle GNU flexible array initializers. 11321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!TopLevelObject && 1133a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor (!isa<InitListExpr>(IList->getInit(Index)) || 1134a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor cast<InitListExpr>(IList->getInit(Index))->getNumInits() > 0)) { 11351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getInit(Index)->getSourceRange().getBegin(), 1136eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_nonempty) 1137eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << IList->getInit(Index)->getSourceRange().getBegin(); 11380820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1139eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1140eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1141a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1142a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1143a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor } else { 11441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getInit(Index)->getSourceRange().getBegin(), 1145a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor diag::ext_flexible_array_init) 1146a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor << IList->getInit(Index)->getSourceRange().getBegin(); 1147a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1148a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor << *Field; 1149eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1150eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 11518ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 11528ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1153987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson 11548ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 11558ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 11568ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 11578ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 11588ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1159987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 11600cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11610cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1162ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1163ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1164ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1165ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1166ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// Field/FieldIndex will be updated to point to the (new) 1167ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// currently-designated field. 1168ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 11691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 11701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1171ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *Field, 1172ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor RecordDecl::field_iterator &FieldIter, 1173ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor unsigned &FieldIndex) { 1174ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1175ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1176ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the path from the current object to the member of the 1177ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // anonymous struct/union (backwards). 1178ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor llvm::SmallVector<FieldDecl *, 4> Path; 1179ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SemaRef.BuildAnonymousStructUnionMemberPath(Field, Path); 11801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1181ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 1182ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor llvm::SmallVector<Designator, 4> Replacements; 1183ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor for (llvm::SmallVector<FieldDecl *, 4>::reverse_iterator 1184ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FI = Path.rbegin(), FIEnd = Path.rend(); 1185ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FI != FIEnd; ++FI) { 1186ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (FI + 1 == FIEnd) 11871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1188ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1189ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1190ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1191ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1192ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1193ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.back().setField(*FI); 1194ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1195ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1196ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1197ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1198ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1199319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1200ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 12011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1202ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Update FieldIter/FieldIndex; 1203ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor RecordDecl *Record = cast<RecordDecl>(Path.back()->getDeclContext()); 120417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldIter = Record->field_begin(); 1205ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldIndex = 0; 120617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator FEnd = Record->field_end(); 1207ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldIter != FEnd; ++FieldIter) { 1208ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (FieldIter->isUnnamedBitfield()) 1209ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor continue; 1210ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1211ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (*FieldIter == Path.back()) 1212ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return; 1213ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1214ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor ++FieldIndex; 1215ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1216ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1217ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor assert(false && "Unable to find anonymous struct/union field"); 1218ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1219ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 122005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 122105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 122205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 122305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 122405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 122505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 12261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 12274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 122805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 122905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 123005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 123105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1232711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1233711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1234711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 123505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 123605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param DeclType The type of the "current object" (C99 6.7.8p17), 123705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 123805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 123987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 124087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 124187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 124205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 124387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 124487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 124587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 124605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 124705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 124805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 124905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 12504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 12514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 12524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 12534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 125405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 12551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 12568ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 12579a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 12581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 1259711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 126087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor QualType &CurrentObjectType, 126187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator *NextField, 126287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt *NextElementIndex, 12634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 12644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 126534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned &StructuredIndex, 1266eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1267eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1268711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 126987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 127087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 12716fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 12726fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 12736fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 12746fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 12756fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 12766fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 12776fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 12789a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 12794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 12806fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 12816fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 12826fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 12836fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 12846fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 12856fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 12866fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 128787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 128887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 128905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1290711997184366d584c9c437102cae1e9d9927b986Douglas Gregor bool IsFirstDesignator = (DesigIdx == 0); 12911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((IsFirstDesignator || StructuredList) && 12924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor "Need a non-designated initializer list to start from"); 12934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1294711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 12954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Determine the structural initializer list that corresponds to the 12964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // current subobject. 12974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList = IsFirstDesignator? SyntacticToSemantic[IList] 12981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 1299ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor StructuredList, StructuredIndex, 13004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange(D->getStartLocation(), 13014c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DIE->getSourceRange().getEnd())); 13024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert(StructuredList && "Expected a structured initializer list"); 13034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 130487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 130587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 130687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 130787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 130887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 130987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 131087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 131187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 131287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 13131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 13146217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 131587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 131687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 131787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 131887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 13190820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 13200820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner << SemaRef.getLangOptions().CPlusPlus << CurrentObjectType; 132187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 132287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 132387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 132487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 13254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 13264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 13274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1328ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 132987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 13304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 13311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 133217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 133317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 13344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 13354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 13364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 13374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1338ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (KnownField == *Field || Field->getIdentifier() == FieldName) 13394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 13404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 13414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 134287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 134387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 13444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1345ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1346ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1347ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1348ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 13491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 135017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1351c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 13524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1353c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1354c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1355c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor LookupResult R(SemaRef, FieldName, D->getFieldLoc(), 1356c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Sema::LookupMemberName); 1357aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (SemaRef.CorrectTypo(R, /*Scope=*/0, /*SS=*/0, RT->getDecl(), false, 1358aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor Sema::CTC_NoKeywords) && 1359c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor (ReplacementField = R.getAsSingle<FieldDecl>()) && 1360c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ReplacementField->getDeclContext()->getLookupContext() 1361c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ->Equals(RT->getDecl())) { 1362c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), 1363c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1364c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType << R.getLookupName() 1365849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), 1366849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor R.getLookupName().getAsString()); 136767dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor SemaRef.Diag(ReplacementField->getLocation(), 136867dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor diag::note_previous_decl) 136967dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor << ReplacementField->getDeclName(); 1370c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1371c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1372c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1373c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1374c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1375c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1376c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else if (!KnownField) { 1377c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Determine whether we found a field at all. 1378c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ReplacementField = dyn_cast<FieldDecl>(*Lookup.first); 1379c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1380c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1381c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 13824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 13830820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 13844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 13851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 13864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1387ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1388ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1389ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1390c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1391c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!KnownField && 1392c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor cast<RecordDecl>((ReplacementField)->getDeclContext()) 1393c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ->isAnonymousStructOrUnion()) { 1394c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Handle an field designator that refers to a member of an 1395c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // anonymous struct or union. 1396c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, 1397c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ReplacementField, 1398c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field, FieldIndex); 1399c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor D = DIE->getDesignator(DesigIdx); 1400c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else if (!KnownField) { 1401c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1402c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1403c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1404c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1405c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1406c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1407c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1408c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1409c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (ReplacementField == *Field || 1410c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1411c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1412c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1413c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1414c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1415c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1416ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } else if (!KnownField && 1417ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor cast<RecordDecl>((*Field)->getDeclContext()) 14184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ->isAnonymousStructOrUnion()) { 1419ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, *Field, 1420ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Field, FieldIndex); 1421ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor D = DIE->getDesignator(DesigIdx); 142287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 14234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 14244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 14254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 14260bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 14274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 14280bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 14290bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 14304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 143187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Update the designator with the field declaration. 14324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor D->setField(*Field); 14331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 14354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this field. 14364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (FieldIndex >= StructuredList->getNumInits()) 14370820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 14384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1439eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1440eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1441eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1442711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1443eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1444eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 14451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr::Designator *NextD 1446711997184366d584c9c437102cae1e9d9927b986Douglas Gregor = DIE->getDesignator(DesigIdx + 1); 14471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(NextD->getStartLocation(), 1448eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_designator_into_flexible_array_member) 14491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << SourceRange(NextD->getStartLocation(), 1450eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor DIE->getSourceRange().getEnd()); 14510820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1452eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1453eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1454eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1455eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1456eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (!hadError && !isa<InitListExpr>(DIE->getInit())) { 1457eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 14580820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(DIE->getInit()->getSourceRange().getBegin(), 1459eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_needs_braces) 1460eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << DIE->getInit()->getSourceRange(); 14610820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1462eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1463eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1464eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1465eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1466eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Handle GNU flexible array initializers. 14671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Invalid && !TopLevelObject && 1468eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor cast<InitListExpr>(DIE->getInit())->getNumInits() > 0) { 14691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(DIE->getSourceRange().getBegin(), 1470eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_nonempty) 1471eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << DIE->getSourceRange().getBegin(); 14720820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1473eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1474eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1475eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1476eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1477eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1478eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1479eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1480eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1481eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1482eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1483eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1484eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1485eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1486eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 14878ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 14888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 14898ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 14908ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1491eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 14928ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1493eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1494eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1495eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1496eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1497eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1498eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1499eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1500eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1501eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1502eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1503eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1504eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType FieldType = (*Field)->getType(); 1505eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 15069a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 15079a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 15088ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 15098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 15109a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson FieldType, 0, 0, Index, 15119a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1512eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1513eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1514eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 151587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 151687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 151787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 151887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 15194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 152005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 152187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 152287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 152387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 152487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 152587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 15264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 152787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 152887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 152905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 153034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 153134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 153234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1533ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1534ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1535ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1536ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 153787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 153887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 15392bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson 15408ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 15414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 154287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 154387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 154405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 154587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 154687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 154787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 154887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 154987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 155087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 155187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 155287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 155387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 155487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 155587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 155687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 155787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 155887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 155987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 15600820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 156187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 15620820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 156387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor << CurrentObjectType; 156487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 156587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 156687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 156705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 156887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 156934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 157034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 157187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 15723bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedStartIndex = IndexExpr->EvaluateAsInt(SemaRef.Context); 157334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 157434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 157587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 15763bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 15771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 15793bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DIE->getArrayRangeStart(*D)->EvaluateAsInt(SemaRef.Context); 15801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 15813bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DIE->getArrayRangeEnd(*D)->EvaluateAsInt(SemaRef.Context); 158287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 158334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 15843bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (DesignatedStartIndex.getZExtValue() !=DesignatedEndIndex.getZExtValue()) 1585a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 158687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 158705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 158887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 158987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 159034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 159134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 159234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 159334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 159434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 15950820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IndexExpr->getSourceRange().getBegin(), 159687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor diag::err_array_designator_too_large) 159734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 159887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor << IndexExpr->getSourceRange(); 159987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 160087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 160105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 160234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 160334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 160434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 160534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 16063bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 16073bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 160834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 160934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 161034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 161105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 16121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 16144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 161534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 16161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 161734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 161834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 161934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 162034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 162134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 162234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 162334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 162434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 16259a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 16269a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 16278ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 16289a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 162934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 163034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 163134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 163234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 16339a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 16349a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 16358ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 16369a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementType, 0, 0, Index, 16379a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 1638eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 1639eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 164034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 164187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 164234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 164334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 164434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 164534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 164687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 164787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 164887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 164987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 165087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 165134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 16524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 165387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 165487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 16551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 165634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 165734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 165834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 165987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 166005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 16618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 1662784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 16634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 16641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 166505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 166605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 16674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 16684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 16694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 16704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 16714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 16724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 16734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 16744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 16754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 16764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 16774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = SyntacticToSemantic[IList]; 16784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 16794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 16801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 16824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 16834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 16844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 16854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 16864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 16874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 16884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 16891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 16904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 16914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 16921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 16934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 16944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 16954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 16961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 1697ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 16984c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 16991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(ExistingInit->getSourceRange().getBegin(), 17004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 170154f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 17024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 17034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 1706709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 1707709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitRange.getBegin(), 0, 0, 1708ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 1709ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 17102c79281ef66cb5001f0ebadf6b317250c21a1c01Douglas Gregor Result->setType(CurrentObjectType.getNonReferenceType()); 17114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1712fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 1713fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 171408457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 171508457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (!StructuredList) 171608457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 171708457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor else if (Index < IList->getNumInits()) { 171808457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) 171908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 172008457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 172108457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 17221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 1723fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 1724fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 1725fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 1726fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 1727fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 172808457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (NumInits && NumElements > NumInits) 1729fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 1730fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 1731183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 1732fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 17336217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 1734fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 1735fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 1736fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 1737fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 17381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 173917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 1740fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 1741fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 174208457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (NumElements < NumInits) 1743fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = IList->getNumInits(); 1744fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 1745709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 1746fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 17474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 17484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 17494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 1750709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 17514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 17524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 17534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 17544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 17574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 17584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 17604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 17614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 17624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 17634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 17644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 17654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 17664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 17674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1768709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 1769709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 17704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 17711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(expr->getSourceRange().getBegin(), 17724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 17734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 17741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(PrevInit->getSourceRange().getBegin(), 17754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 177654f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 17774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 17784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 17814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 17824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 178305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 178405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// value. This is essentailly just a wrapper around 17853bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 178605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 178705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// failure. Returns true if there was an error, false otherwise. If 178805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// everything went okay, Value will receive the value of the constant 178905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// expression. 17901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic bool 17913bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 179205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation Loc = Index->getSourceRange().getBegin(); 179305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 179405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 17953bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (S.VerifyIntegerConstantExpression(Index, &Value)) 17963bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return true; 17973bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 17983bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 17993bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 180005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 180105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 180253d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 180305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return false; 180405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 180505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 180605c13a3411782108d65aab3c77b1a231a4963bc0Douglas GregorSema::OwningExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 180705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation Loc, 1808eeae8f072748affce25ab4064982626361293390Douglas Gregor bool GNUSyntax, 180905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor OwningExprResult Init) { 181005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 181105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 181205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 181305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::SmallVector<ASTDesignator, 32> Designators; 181405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::SmallVector<Expr *, 32> InitExpressions; 181505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 181605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 181705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 181805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 181905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 182005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 18211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 182205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 182305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 182405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 182505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 182605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 182705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 18289ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (!Index->isTypeDependent() && 18299ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor !Index->isValueDependent() && 18309ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, Index, IndexValue)) 183105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 183205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 183305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 18341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 183505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 183605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 183705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 183805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 183905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 184005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 184105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 184205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 184305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 184405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 184505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 18469ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 18479ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 18489ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 18499ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 18509ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if ((!StartDependent && 18519ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, StartIndex, StartValue)) || 18529ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor (!EndDependent && 18539ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, EndIndex, EndValue))) 185405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 1855d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 1856d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 18579ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 18589ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 18599ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 1860d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor EndValue.extend(StartValue.getBitWidth()); 1861d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 1862d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor StartValue.extend(EndValue.getBitWidth()); 1863d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 1864c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 1865d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 18661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 1867d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 1868d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 1869d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 1870d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 18711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 1872d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 1873d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 1874d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 1875d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 1876d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 187705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 187805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 187905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 188005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 188105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 188205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 188405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 188505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 188705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 188805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 1890beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 1891beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 1892beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad InitExpressions.data(), InitExpressions.size(), 1893e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson Loc, GNUSyntax, Init.takeAs<Expr>()); 189405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 189505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 1896c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 1897cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregorbool Sema::CheckInitList(const InitializedEntity &Entity, 1898cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *&InitList, QualType &DeclType) { 1899cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker CheckInitList(*this, Entity, InitList, DeclType); 1900c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor if (!CheckInitList.HadError()) 1901c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitList = CheckInitList.getFullyStructuredList(); 1902c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 1903c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor return CheckInitList.HadError(); 1904c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor} 190587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 1906cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 1907cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 1908cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 190939da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 1910cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 1911cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 1912d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson : Parent(&Parent), Index(Index) 1913cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 1914d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 1915d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 1916d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 1917d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } else { 1918d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 1919d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = Parent.getType()->getAs<VectorType>()->getElementType(); 1920d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 192120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 192220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 192320093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 1924711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 1925711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 192620093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 192720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 192820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 1929711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 1930711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 1931711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 1932711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson 1933d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 193420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 193520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 193620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 193799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 193899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 193999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Parameter: 1940a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor if (!VariableOrMember) 1941a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor return DeclarationName(); 1942a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor // Fall through 1943a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 1944a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 194599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 194699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 194799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 194899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 194999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 195018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 195199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 195299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 1953d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 1954d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 195599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 195699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 195799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 195899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Silence GCC warning 195999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 196099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 196199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 19627abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 19637abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 19647abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 19657abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Parameter: 19667abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 19677abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 19687abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 19697abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 19707abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 19717abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 19727abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 19737abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 1974d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 1975d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 19767abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 19777abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 19787abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 19797abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor // Silence GCC warning 19807abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 19817abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 19827abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 198320093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 198420093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 198520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 198620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 198720093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 198820093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 198920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 199020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 199120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 199220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 199320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 1994523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 199520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 199620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 199720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 1998d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 199951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 200071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 200118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2002cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 200320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 200420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 200520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 200620093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 200720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 200820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 200920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2010b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 2011b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return getKind() == ReferenceBinding && Steps.back().Kind == SK_BindReference; 2012b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2013b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2014b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2015b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor if (getKind() != FailedSequence) 2016b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2017b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2018b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2019b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2020b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2021b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2022b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2023b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2024b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2025b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2026b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2027b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2028b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2029b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2030b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2031b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2032b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 2033b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2034b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2035b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2036b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2037b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2038b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2039b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2040b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2041b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2042b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2043b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2044d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2045d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2046d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2047d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 204820093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddAddressOverloadResolutionStep( 20496bb8017bb9e828d118e15e59d71c66bba323c364John McCall FunctionDecl *Function, 20506bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found) { 205120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 205220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 205320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 20549aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 20556bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 205620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 205720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 205820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 205920093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 206020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IsLValue) { 206120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 206220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = IsLValue? SK_CastDerivedToBaseLValue : SK_CastDerivedToBaseRValue; 206320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 206420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 206520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 206620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 206720093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddReferenceBindingStep(QualType T, 206820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 206920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 207020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 207120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 207220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 207320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 207420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2075523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2076523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2077523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2078523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2079523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2080523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2081523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 208203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedmanvoid InitializationSequence::AddUserConversionStep(FunctionDecl *Function, 20839aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl, 208403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman QualType T) { 208520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 208620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 208703981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 20889aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 20899aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 209020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 209120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 209220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 209320093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 209420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IsLValue) { 209520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 209620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = IsLValue? SK_QualificationConversionLValue 209720093b4bf698f292c664676987541d5103b65b15Douglas Gregor : SK_QualificationConversionRValue; 209820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 209920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 210020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 210120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 210220093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 210320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 210420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 210520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 210620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 210720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 210820093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 210920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 211020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 211120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2112d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2113d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2114d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2115d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2116d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2117d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2118d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 211951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregorvoid 212051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas GregorInitializationSequence::AddConstructorInitializationStep( 212151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor, 2122b13b737a2450167c82e148590e8019b839ce6b98John McCall AccessSpecifier Access, 212351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor QualType T) { 212451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 212551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Kind = SK_ConstructorInitialization; 212651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 21279aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 21289aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 212951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 213051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 213151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 213271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 213371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 213471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 213571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 213671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 213771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 213871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 213918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 214018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 214118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 214218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 214318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 214418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 214518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2146cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2147cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2148cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2149cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2150cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2151cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2152cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 215320093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 215420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 215520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = FailedSequence; 215620093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 215720093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 215820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 215920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 216020093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 216120093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 216220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 216320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 216420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt list initialization (C++0x [dcl.init.list]) 2165d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorstatic void TryListInitialization(Sema &S, 216620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 216720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 216820093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitListExpr *InitList, 216920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2170d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We only perform rudimentary checking of list 2171d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // initializations at this point, then assume that any list 2172d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // initialization of an array, aggregate, or scalar will be 2173d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // well-formed. We we actually "perform" list initialization, we'll 2174d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // do all of the necessary checking. C++0x initializer lists will 2175d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // force us to perform more checking here. 2176d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ListInitialization); 2177d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2178d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 2179d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2180d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // C++ [dcl.init]p13: 2181d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If T is a scalar type, then a declaration of the form 2182d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2183d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // T x = { a }; 2184d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2185d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // is equivalent to 2186d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2187d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // T x = a; 2188d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (DestType->isScalarType()) { 2189d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (InitList->getNumInits() > 1 && S.getLangOptions().CPlusPlus) { 2190d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 2191d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 2192d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 2193d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2194d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume scalar initialization from a single value works. 2195d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isAggregateType()) { 2196d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume aggregate initialization works. 2197d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isVectorType()) { 2198d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume vector initialization works. 2199d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isReferenceType()) { 2200d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: C++0x defines behavior for this. 2201d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 2202d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 2203d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isRecordType()) { 2204d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: C++0x defines behavior for this 2205d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_InitListBadDestinationType); 2206d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 2207d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2208d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Add a general "list initialization" step. 2209d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.AddListInitializationStep(DestType); 221020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 221120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 221220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 221320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 221420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// 221520093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// FIXME: look intos DRs 656, 896 221620093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 221720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 221820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 221920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 222020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowRValues, 222120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2222d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 222320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 222420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 222520093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 222620093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 222720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 222820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 222920093b4bf698f292c664676987541d5103b65b15Douglas Gregor assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 223020093b4bf698f292c664676987541d5103b65b15Douglas Gregor T1, T2, DerivedToBase) && 223120093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 223260cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 223320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 223420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 223520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 223620093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 223720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 223820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 223920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 224020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 224120093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 224220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 224320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 224420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>())) { 224520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 224620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 224720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 224820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 224920093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclarationName ConstructorName 225020093b4bf698f292c664676987541d5103b65b15Douglas Gregor = S.Context.DeclarationNames.getCXXConstructorName( 225120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getCanonicalType(T1).getUnqualifiedType()); 225220093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 225320093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (llvm::tie(Con, ConEnd) = T1RecordDecl->lookup(ConstructorName); 225420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 22559aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 22569aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 22579aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 225820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 225920093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 22609aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 226120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 226220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 226320093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 226420093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 22659aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 226620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 226720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 226820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 226920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 22709aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 227186820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 227220093b4bf698f292c664676987541d5103b65b15Douglas Gregor &Initializer, 1, CandidateSet); 227320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 22749aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 227586820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall &Initializer, 1, CandidateSet); 227620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 227720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 227820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 227920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 228020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (const RecordType *T2RecordType = T2->getAs<RecordType>()) { 228120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 228220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 228320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 228420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 228520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the type we are converting to. If we are allowed to 228620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // convert to an rvalue, take the type that the destination type 228720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // refers to. 228820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType ToType = AllowRValues? cv1T1 : DestType; 228920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2290eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 229120093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 2292eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 2293eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 229420093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 229520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 229620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 229720093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 229820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 229920093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 230020093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 230120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 230220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 230320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 230420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(*I); 230520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 230620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 230720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 230820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 230920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Do we need to make sure that we only consider conversion 231020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // candidates with reference-compatible results? That might be needed to 231120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 231220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if ((AllowExplicit || !Conv->isExplicit()) && 231320093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 231420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 23159aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 231686820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 231720093b4bf698f292c664676987541d5103b65b15Douglas Gregor ToType, CandidateSet); 231820093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 23199aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 2320692f85c1d217c8c3cdc06d884ad61b101c75c856Douglas Gregor Initializer, ToType, CandidateSet); 232120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 232220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 232320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 232420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 232520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 232620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 232720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform overload resolution. If it fails, return the failed result. 232820093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 232920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (OverloadingResult Result 233020093b4bf698f292c664676987541d5103b65b15Douglas Gregor = S.BestViableFunction(CandidateSet, DeclLoc, Best)) 233120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 233203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 233320093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 233403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 233503981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 233620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 233720093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 233820093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 233920093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 234003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 234103981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 23429aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 2343b13b737a2450167c82e148590e8019b839ce6b98John McCall T2.getNonReferenceType()); 234403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 234503981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Determine whether we need to perform derived-to-base or 234603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 234720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 234820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 234920093b4bf698f292c664676987541d5103b65b15Douglas Gregor = S.CompareReferenceRelationship(DeclLoc, T1, T2.getNonReferenceType(), 235020093b4bf698f292c664676987541d5103b65b15Douglas Gregor NewDerivedToBase); 2351a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 2352a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 2353a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 2354a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 2355a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 2356a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 2357a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 2358a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 2359a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 2360a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 2361a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 236220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 236320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 236420093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2.getNonReferenceType().getQualifiers()), 236520093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*isLValue=*/true); 236620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 236720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 236820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddQualificationConversionStep(cv1T1, T2->isReferenceType()); 236920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 237020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 237120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 237220093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 237320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 237420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt reference initialization (C++0x [dcl.init.list]) 237520093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryReferenceInitialization(Sema &S, 237620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 237720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 237820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 237920093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 238020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ReferenceBinding); 238120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2382d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 238320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 23845535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 23855535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 238620093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 23875535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 23885535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 238920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 239020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 239120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 239220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 239320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 239420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) { 23956bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 239620093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Fn = S.ResolveAddressOfOverloadedFunction(Initializer, 239720093b4bf698f292c664676987541d5103b65b15Douglas Gregor T1, 23986bb8017bb9e828d118e15e59d71c66bba323c364John McCall false, 23996bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 240020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Fn) { 240120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 240220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 240320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 240420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 24056bb8017bb9e828d118e15e59d71c66bba323c364John McCall Sequence.AddAddressOverloadResolutionStep(Fn, Found); 240620093b4bf698f292c664676987541d5103b65b15Douglas Gregor cv2T2 = Fn->getType(); 240720093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv2T2.getUnqualifiedType(); 240820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 240920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 241020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 241120093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 241220093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 241320093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 241423ef6c00c2948d49aed3b4c083daa1cc07b2d8d5Douglas Gregor Expr::isLvalueResult InitLvalue = Initializer->isLvalue(S.Context); 241520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 241620093b4bf698f292c664676987541d5103b65b15Douglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase); 241720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 241820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 241920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A reference to type "cv1 T1" is initialized by an expression of type 242020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 242120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 242220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the reference is an lvalue reference and the initializer 242320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 242420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 242520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isLValueRef) { 242620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (InitLvalue == Expr::LV_Valid && 242720093b4bf698f292c664676987541d5103b65b15Douglas Gregor RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification) { 242820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - is an lvalue (but is not a bit-field), and "cv1 T1" is 242920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 243020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 2431de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 243220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 2433de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 2434de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 2435de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 243620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 243720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 24385535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth S.Context.getQualifiedType(T1, T2Quals), 243920093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*isLValue=*/true); 24405535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 244120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddQualificationConversionStep(cv1T1, /*IsLValue=*/true); 2442de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 2443093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 2444de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 244520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 244620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 244720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 244820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - has a class type (i.e., T2 is a class type), where T1 is not 244920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-related to T2, and can be implicitly converted to an 245020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 245120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // with "cv3 T3" (this conversion is selected by enumerating the 245220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 245320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 245420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType()) { 245520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 245620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 245720093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/false, 245820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 245920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 246020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 24611d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 24621d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 24631d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 24641d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 24651d31833450e6d2947a33cb0840d87661d92eec07John McCall } 246620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 246720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 246820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 246920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the reference shall be an lvalue reference to a 247020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 247120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // shall be an rvalue reference and the initializer expression shall 247220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // be an rvalue. 2473ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor if (!((isLValueRef && T1Quals.hasConst() && !T1Quals.hasVolatile()) || 247420093b4bf698f292c664676987541d5103b65b15Douglas Gregor (isRValueRef && InitLvalue != Expr::LV_Valid))) { 247520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 247620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 247720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 247820093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 247920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else if (isLValueRef) 248020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitLvalue == Expr::LV_Valid 248120093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 248220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 248320093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 248420093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 248520093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 248620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed( 248720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 248820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 248920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 249020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 249120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 249220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If T1 and T2 are class types and 249320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (T1->isRecordType() && T2->isRecordType()) { 249420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - the initializer expression is an rvalue and "cv1 T1" is 249520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2", or 249620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (InitLvalue != Expr::LV_Valid && 249720093b4bf698f292c664676987541d5103b65b15Douglas Gregor RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification) { 2498523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 2499523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 2500523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 2501523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 2502523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 2503523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 2504523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 2505523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 2506523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 2507523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (!S.getLangOptions().CPlusPlus0x) 2508523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 2509523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 251020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 251120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 25125535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth S.Context.getQualifiedType(T1, T2Quals), 251320093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*isLValue=*/false); 25145535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 251520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddQualificationConversionStep(cv1T1, /*IsLValue=*/false); 251620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 251720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 251820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 251920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 252020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - T1 is not reference-related to T2 and the initializer expression 252120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // can be implicitly converted to an rvalue of type "cv3 T3" (this 252220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversion is selected by enumerating the applicable conversion 252320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions (13.3.1.6) and choosing the best one through overload 252420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // resolution (13.3)), 252520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 252620093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 252720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 252820093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 252920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 253020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 253120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 253220093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 253320093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 253420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 253520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 253620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 253720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 253820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 253920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 254020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 254120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 254220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer expression is an rvalue, with T2 an array type, 254320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // and "cv1 T1" is reference-compatible with "cv2 T2," the reference 254420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // is bound to the object represented by the rvalue (see 3.10). 254520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: How can an array type be reference-compatible with anything? 254620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Don't we mean the element types of T1 and T2? 254720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 254820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, a temporary of type “cv1 T1” is created and initialized 254920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 255020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // copy initialization (8.5). The reference is then bound to the 255120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 255220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 255320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 255420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct); 255520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ImplicitConversionSequence ICS 255620093b4bf698f292c664676987541d5103b65b15Douglas Gregor = S.TryImplicitConversion(Initializer, cv1T1, 255720093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*SuppressUserConversions=*/false, AllowExplicit, 25583fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor /*FIXME:InOverloadResolution=*/false); 255920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 25601d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ICS.isBad()) { 256120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 256220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 256320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 256420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 256518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 256618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 256718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 256818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 256918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 257018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 257120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 257220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 257320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 257420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 257520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 257620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 25775535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 25785535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 257920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Related && 25805535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 258120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 258220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 258320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 258420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 258520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform the actual conversion. 258620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddConversionSequenceStep(ICS, cv1T1); 258720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 258820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 258920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 259020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 259120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 259220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// (C++ [dcl.init.string], C99 6.7.8). 259320093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryStringLiteralInitialization(Sema &S, 259420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 259520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 259620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 259720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2598cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Sequence.setSequenceKind(InitializationSequence::StringInit); 2599d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 260020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 260120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 260220093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 260320093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// enumerates the constructors of the initialized entity and performs overload 260420093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// resolution to select the best. 260520093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryConstructorInitialization(Sema &S, 260620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 260720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 260820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs, 260971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor QualType DestType, 261020093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 26112f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ConstructorInitialization); 261251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 261351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Build the candidate set directly in the initialization sequence 261451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // structure, so that it will persist if we fail. 261551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 261651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CandidateSet.clear(); 261751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 261851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 261951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // explicit conversion operators. 262051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct || 262151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Kind.getKind() == InitializationKind::IK_Value || 26222f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Kind.getKind() == InitializationKind::IK_Default); 262351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 262451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 262551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // to see if one is suitable. 262651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor const RecordType *DestRecordType = DestType->getAs<RecordType>(); 262751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor assert(DestRecordType && "Constructor initialization requires record type"); 262851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXRecordDecl *DestRecordDecl 262951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 263051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 263151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor DeclarationName ConstructorName 263251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor = S.Context.DeclarationNames.getCXXConstructorName( 263351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Context.getCanonicalType(DestType).getUnqualifiedType()); 263451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 263551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor for (llvm::tie(Con, ConEnd) = DestRecordDecl->lookup(ConstructorName); 263651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Con != ConEnd; ++Con) { 26379aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 26389aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 2639d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor bool SuppressUserConversions = false; 2640d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 264151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Find the constructor (which may be a template). 264251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor = 0; 26439aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 264451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (ConstructorTmpl) 264551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 264651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 2647d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor else { 26489aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 2649d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 2650d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // If we're performing copy initialization using a copy constructor, we 2651d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // suppress user-defined conversions on the arguments. 2652d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // FIXME: Move constructors? 2653d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Copy && 2654d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Constructor->isCopyConstructor()) 2655d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions = true; 2656d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor } 265751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 265851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (!Constructor->isInvalidDecl() && 265999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (AllowExplicit || !Constructor->isExplicit())) { 266051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (ConstructorTmpl) 26619aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 266286820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 2663d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Args, NumArgs, CandidateSet, 2664d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 266551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor else 26669aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 2667d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Args, NumArgs, CandidateSet, 2668d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 266951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 267051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 267151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 267251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceLocation DeclLoc = Kind.getLocation(); 267351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 267451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Perform overload resolution. If it fails, return the failed result. 267551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 267651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (OverloadingResult Result 267751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor = S.BestViableFunction(CandidateSet, DeclLoc, Best)) { 267851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Sequence.SetOverloadFailure( 267951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor InitializationSequence::FK_ConstructorOverloadFailed, 268051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Result); 268151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return; 268251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 26839db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 26849db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // C++0x [dcl.init]p6: 26859db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // If a program calls for the default initialization of an object 26869db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // of a const-qualified type T, T shall be a class type with a 26879db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // user-provided default constructor. 26889db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 26899db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getType().isConstQualified() && 26909db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor cast<CXXConstructorDecl>(Best->Function)->isImplicit()) { 26919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 26929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor return; 26939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 26949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 269551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Add the constructor initialization step. Any cv-qualification conversion is 269651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // subsumed by the initialization. 26972f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Sequence.AddConstructorInitializationStep( 269851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor cast<CXXConstructorDecl>(Best->Function), 26999aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Best->FoundDecl.getAccess(), 270018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DestType); 270120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 270220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 270371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 270471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorstatic void TryValueInitialization(Sema &S, 270571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 270671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 270771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor InitializationSequence &Sequence) { 270871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // C++ [dcl.init]p5: 270971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 271071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 2711d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 271271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 271371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 271471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor while (const ArrayType *AT = S.Context.getAsArrayType(T)) 271571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor T = AT->getElementType(); 271671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 271771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 271871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 271971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is a class type (clause 9) with a user-declared 272071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // constructor (12.1), then the default constructor for T is 272171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // called (and the initialization is ill-formed if T has no 272271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // accessible default constructor); 272371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 272471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // FIXME: we really want to refer to a single subobject of the array, 272571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // but Entity doesn't have a way to capture that (yet). 272671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (ClassDecl->hasUserDeclaredConstructor()) 272771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 272871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 272916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // -- if T is a (possibly cv-qualified) non-union class type 273016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // without a user-provided constructor, then the object is 273116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // zero-initialized and, if T’s implicitly-declared default 273216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // constructor is non-trivial, that constructor is called. 273316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if ((ClassDecl->getTagKind() == TagDecl::TK_class || 273416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ClassDecl->getTagKind() == TagDecl::TK_struct) && 273516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !ClassDecl->hasTrivialConstructor()) { 2736d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 273716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 273816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 273971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 274071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 274171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 2742d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 274371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ZeroInitialization); 274471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 274571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 274699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 274799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 274899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 274999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 275099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 275199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 275299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 275399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 275499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 275599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 2756d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 275799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor while (const ArrayType *Array = S.Context.getAsArrayType(DestType)) 275899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor DestType = Array->getElementType(); 275999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 276099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 276199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 276299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 276360c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType->isRecordType() && S.getLangOptions().CPlusPlus) { 276499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, 276599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence); 276699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 276799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 276899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 276999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.setSequenceKind(InitializationSequence::NoInitialization); 277099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 277199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 277299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // a const-qualified type T, T shall be a class type with a user-provided 277399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 277460c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType.isConstQualified() && S.getLangOptions().CPlusPlus) 277599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 277699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 277799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 277820093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 277920093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 278020093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 278120093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryUserDefinedConversion(Sema &S, 278220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 278320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 278420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 278520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 27864a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.setSequenceKind(InitializationSequence::UserDefinedConversion); 27874a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 2788d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 27894a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 27904a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 27914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 27924a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 27934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 27944a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 27954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 27964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 27974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 27984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 27994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 28004a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 28014a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 28024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 28034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 28044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 28054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 28064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 28074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 28084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 28094a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor DeclarationName ConstructorName 28104a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = S.Context.DeclarationNames.getCXXConstructorName( 28114a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor S.Context.getCanonicalType(DestType).getUnqualifiedType()); 28124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor DeclContext::lookup_iterator Con, ConEnd; 28134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor for (llvm::tie(Con, ConEnd) = DestRecordDecl->lookup(ConstructorName); 28144a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Con != ConEnd; ++Con) { 28159aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 28169aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 2817d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor bool SuppressUserConversions = false; 2818d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 28194a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Find the constructor (which may be a template). 28204a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXConstructorDecl *Constructor = 0; 28214a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionTemplateDecl *ConstructorTmpl 28229aa472c45d2bd81b7b52c225e8acc560d716db97John McCall = dyn_cast<FunctionTemplateDecl>(D); 28234a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 28244a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Constructor = cast<CXXConstructorDecl>( 28254a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ConstructorTmpl->getTemplatedDecl()); 2826d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor else { 28279aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 2828d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 2829d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // If we're performing copy initialization using a copy constructor, we 2830d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // suppress user-defined conversions on the arguments. 2831d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // FIXME: Move constructors? 2832d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Copy && 2833d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Constructor->isCopyConstructor()) 2834d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions = true; 2835d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 2836d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor } 28374a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 28384a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (!Constructor->isInvalidDecl() && 28394a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 28404a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 28419aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 284286820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 2843d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor &Initializer, 1, CandidateSet, 2844d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 28454a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 28469aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 2847d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor &Initializer, 1, CandidateSet, 2848d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 28494a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 28504a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 28514a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 2852cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2853cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 2854cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 28554a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 28564a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 28574a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 2858cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 285933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 286033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 286133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 286233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 286333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 28644a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 2865eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 286633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 2867eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 286833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman E = Conversions->end(); 286933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 287033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 287133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 287233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 287333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 287433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman 287533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 287633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 28774a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 287833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 28794a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 288032daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 288133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman 288233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 288333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 28849aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 288586820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 288633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 288733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 28889aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 288986820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 289033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 28914a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 28924a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 28934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 28944a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 28954a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Perform overload resolution. If it fails, return the failed result. 28964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 28971d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 28984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = S.BestViableFunction(CandidateSet, DeclLoc, Best)) { 28994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 29004a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor InitializationSequence::FK_UserConversionOverloadFailed, 29014a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 29024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 29034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 29041d31833450e6d2947a33cb0840d87661d92eec07John McCall 29054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 29064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 29084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 29094a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // subsumed by the initialization. 29109aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType); 29114a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 29124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 29134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29144a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 29154a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType ConvType = Function->getResultType().getNonReferenceType(); 29163fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 29173fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If we're converting to a class type, there may be an copy if 29183fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 29193fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 29203fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 29213fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 29223fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 29233fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType); 29243fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 29253fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 29264a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 29273fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType); 29283fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 29293fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 29303fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 29314a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 29324a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 29334a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 29341d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 29354a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 29364a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 29374a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 293820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 293920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 294020093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt an implicit conversion (C++ [conv]) converting from one 294120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// non-class type to another. 294220093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic void TryImplicitConversion(Sema &S, 294320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 294420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 294520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 294620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 294720093b4bf698f292c664676987541d5103b65b15Douglas Gregor ImplicitConversionSequence ICS 2948d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = S.TryImplicitConversion(Initializer, Entity.getType(), 294920093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*SuppressUserConversions=*/true, 295020093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowExplicit=*/false, 29513fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor /*InOverloadResolution=*/false); 295220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 29531d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ICS.isBad()) { 295420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ConversionFailed); 295520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 295620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 295720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2958d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddConversionSequenceStep(ICS, Entity.getType()); 295920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 296020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 296120093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 296220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 296320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 296420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 29655769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 29665769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 296720093b4bf698f292c664676987541d5103b65b15Douglas Gregor ASTContext &Context = S.Context; 296820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 296920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 297020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The semantics of initializers are as follows. The destination type is 297120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // the type of the object or reference being initialized and the source 297220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 297320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // defined when the initializer is a braced-init-list or when it is a 297420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 2975d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 297620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 297720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isDependentType() || 297820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr::hasAnyTypeDependentArguments(Args, NumArgs)) { 297920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 298020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 298120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 298220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 298320093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 298420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 298599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 298620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 298720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 298820093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 298920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 299020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 299120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is a braced-init-list, the object is 299220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // list-initialized (8.5.4). 299320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 299420093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryListInitialization(S, Entity, Kind, InitList, *this); 2995d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 299620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 299720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 299820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 299920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 300020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 300120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 300220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 300320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 300420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 300520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 300620093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_TooManyInitsForReference); 300720093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 300820093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 300920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 301020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 301120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 301220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is an array of characters, an array of 301320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // char16_t, an array of char32_t, or an array of wchar_t, and the 301420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer is a string literal, see 8.5.2. 301520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Initializer && IsStringInit(Initializer, DestType, Context)) { 301620093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 301720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 301820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 301920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 302020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 302199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 302299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 302320093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryValueInitialization(S, Entity, Kind, *this); 302420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 302520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 302620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 302799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 302899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Default){ 302999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor TryDefaultInitialization(S, Entity, Kind, *this); 303099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 303199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 303218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 303320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, if the destination type is an array, the program is 303420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 303520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (const ArrayType *AT = Context.getAsArrayType(DestType)) { 303620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (AT->getElementType()->isAnyCharacterType()) 303720093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 303820093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 303920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_ArrayNeedsInitList); 304020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 304120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 304220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3043cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3044cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman // Handle initialization in C 3045cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman if (!S.getLangOptions().CPlusPlus) { 3046cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman setSequenceKind(CAssignment); 3047cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman AddCAssignmentStep(DestType); 3048cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 3049cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 305020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 305120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 305220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 305320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initialization is direct-initialization, or if it is 305420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // copy-initialization where the cv-unqualified version of the 305520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // source type is the same class as, or a derived class of, the 305620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 305720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 305820093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 305920093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 306020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 306171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 3062d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(), *this); 306320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise (i.e., for the remaining copy-initialization cases), 306420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 306520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type to the destination type or (when a conversion function is 306620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 306720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 306820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 306920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 307020093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 307120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 307220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 307320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 307499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 307599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SetFailed(FK_TooManyInitsForScalar); 307699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 307799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 307899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 307999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 308020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, if the source type is a (possibly cv-qualified) class 308120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 308299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 308320093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 308420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 308520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 308620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 308720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 30884a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 308920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 309020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer expression to the cv-unqualified version of the 309120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 309299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor setSequenceKind(StandardConversion); 309320093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryImplicitConversion(S, Entity, Kind, Initializer, *this); 309420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 309520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 309620093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 309720093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (llvm::SmallVectorImpl<Step>::iterator Step = Steps.begin(), 309820093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 309920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 310020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 310120093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 310220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 310320093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 310420093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 310520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 310618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorstatic Sema::AssignmentAction 310718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 310818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 310918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 311018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 311118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 311218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 311318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 3114688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor if (Entity.getDecl() && 3115688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 3116688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 3117688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 311818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 311918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 312018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 312118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 312218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 312318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Exception: 312418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 312518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("No assignment action for C++-specific initialization"); 312618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 312718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 312818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 312918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 313018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 313118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 313218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 3133d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 3134d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 313518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 313618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 313718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 313818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Converting; 313918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 314018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 31414154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 31424154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 31432f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 314418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 31451b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 31461b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 31472f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 314818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 314918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 315018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 3151d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3152a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 315318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 315418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 315518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 315618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 315718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 315818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 315918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 316018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 316118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 316218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 31634154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 31644154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 31654154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 31664154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 31674154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 31684154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 31694154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 31704154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 31714154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 31724154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 31734154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 31744154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 31754154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 31764154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 31774154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 31784154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 31794154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 31804154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 31814154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 31824154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 31834154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 31844154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 3185523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 3186523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 3187523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 3188523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3189523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 3190523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3191523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param T The type of the temporary object, which must either by 3192523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 3193523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3194523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param Enter The entity being initialized. 3195523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3196523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 3197523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3198523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 3199523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 3200523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 3201523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3202523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 3203523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 3204523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 32052f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic Sema::OwningExprResult CopyObject(Sema &S, 3206523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor QualType T, 32072f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor const InitializedEntity &Entity, 3208523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sema::OwningExprResult CurInit, 3209523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor bool IsExtraneousCopy) { 32103fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 32111b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 32122f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor CXXRecordDecl *Class = 0; 3213523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 32142f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 32152f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 32162f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return move(CurInit); 32172f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 32182f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // C++0x [class.copy]p34: 32192f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 32202f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 32212f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 32222f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 32232f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 32242f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 32252f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 32262f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 32272f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 32282f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // 32292f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 32302f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // elision for return statements and throw expressions are (FIXME: 32312f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // not yet) handled as part of constructor initialization, while 32322f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy elision for exception handlers is handled by the run-time. 32332f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor bool Elidable = CurInitExpr->isTemporaryObject() && 3234523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Context.hasSameUnqualifiedType(T, CurInitExpr->getType()); 323518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation Loc; 323618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 323718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 323818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Loc = Entity.getReturnLoc(); 323918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 324018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 324118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Exception: 324218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Loc = Entity.getThrowLoc(); 324318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 324418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 324518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 32467abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor Loc = Entity.getDecl()->getLocation(); 32477abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor break; 32487abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 32491b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 32501b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 325118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 325218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 32532f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_New: 325418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 3255d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 32562f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Loc = CurInitExpr->getLocStart(); 32572f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor break; 325818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 3259f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 3260f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor // Make sure that the type we are copying is complete. 3261f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor if (S.RequireCompleteType(Loc, T, S.PDiag(diag::err_temp_copy_incomplete))) 3262f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor return move(CurInit); 3263f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 326418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // Perform overload resolution using the class's copy constructors. 326518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DeclarationName ConstructorName 326618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor = S.Context.DeclarationNames.getCXXConstructorName( 326718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Context.getCanonicalType(S.Context.getTypeDeclType(Class))); 326818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DeclContext::lookup_iterator Con, ConEnd; 32695769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 327018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor for (llvm::tie(Con, ConEnd) = Class->lookup(ConstructorName); 327118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Con != ConEnd; ++Con) { 32722f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Only consider copy constructors. 327318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(*Con); 327418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (!Constructor || Constructor->isInvalidDecl() || 3275153b3ba7a61f3228fd3a8c67b9bff94db3e13a2eDouglas Gregor !Constructor->isCopyConstructor() || 3276153b3ba7a61f3228fd3a8c67b9bff94db3e13a2eDouglas Gregor !Constructor->isConvertingConstructor(/*AllowExplicit=*/false)) 327718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor continue; 32789aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 32799aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl 32809aa472c45d2bd81b7b52c225e8acc560d716db97John McCall = DeclAccessPair::make(Constructor, Constructor->getAccess()); 32819aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 328286820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall &CurInitExpr, 1, CandidateSet); 32832f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor } 328418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 328518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 328618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (S.BestViableFunction(CandidateSet, Loc, Best)) { 328718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 328818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 328918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 329018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 329118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_no_viable) 32927abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 329318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 3294cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(CandidateSet, Sema::OCD_AllCandidates, 3295cbce60633c9864261105b289473e5a3ed7b4a729John McCall &CurInitExpr, 1); 329618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 329718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 329818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 329918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 33007abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 330118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 3302cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(CandidateSet, Sema::OCD_ViableCandidates, 3303cbce60633c9864261105b289473e5a3ed7b4a729John McCall &CurInitExpr, 1); 330418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 330518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 330618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 330718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 33087abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 330918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 331018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 331118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Best->Function->isDeleted(); 331218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 331318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 331418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 33153fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 33163fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(S); 33173fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 3318523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 33199a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 3320523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Best->FoundDecl.getAccess()); 3321523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 3322523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 3323523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 3324523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 33252559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 33262559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 33272559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 33282559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 33292559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 33302559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 33312559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 33322559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 33332559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 33342559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 33352559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 33362559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.PDiag(diag::err_call_incomplete_argument))) 33372559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 33382559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 33392559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 33402559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 33412559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 33422559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 33432559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 3344523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 3345523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 3346523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 33473fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 33483fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 3349523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 3350523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 33513fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (S.CompleteConstructorCall(Constructor, 33523fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sema::MultiExprArg(S, 33533fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor (void **)&CurInitExpr, 33543fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 1), 33553fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 33563fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return S.ExprError(); 33573fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 3358523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 33593fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor move_arg(ConstructorArgs)); 336018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 336120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3362a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 3363a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 3364a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 3365a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 3366a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 3367a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 3368a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 3369a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 3370a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 3371a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 3372a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 3373a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 3374a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 3375a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 337620093b4bf698f292c664676987541d5103b65b15Douglas GregorAction::OwningExprResult 337720093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 337820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 337920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 3380d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Action::MultiExprArg Args, 3381d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 338220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind == FailedSequence) { 338320093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 338420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Diagnose(S, Entity, Kind, (Expr **)Args.release(), NumArgs); 338520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 338620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 338720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 338820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind == DependentSequence) { 3389d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 3390d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 3391d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 3392d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 3393d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 3394d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 3395d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 3396d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 3397d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 3398d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 3399d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 3400d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 3401d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 3402d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 3403d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 3404d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (isa<InitListExpr>((Expr *)Args.get()[0])) { 3405d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 3406d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 3407d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 3408d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 3409d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 3410d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 3411d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 3412d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 3413d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 3414d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 3415d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3416d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3417d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 3418d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 3419d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 3420d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 3421d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 3422d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 3423d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3424d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3425d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3426d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3427d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3428085446216a198ced4183ec1571e1ae51c2920e98Eli Friedman if (Kind.getKind() == InitializationKind::IK_Copy || Kind.isExplicitCast()) 342920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Sema::OwningExprResult(S, Args.release()[0]); 343020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 343167fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor if (Args.size() == 0) 343267fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor return S.Owned((Expr *)0); 343367fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor 343420093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 343520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.Owned(new (S.Context) ParenListExpr(S.Context, 343620093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation(), 343720093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Expr **)Args.release(), 343820093b4bf698f292c664676987541d5103b65b15Douglas Gregor NumArgs, 343920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation())); 344020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 344120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 344299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (SequenceKind == NoInitialization) 344399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 344499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 3445d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 3446d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 3447a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 3448a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 3449d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 3450a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 3451d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 345220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 345399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sema::OwningExprResult CurInit = S.Owned((Expr *)0); 345499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 345599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(!Steps.empty() && "Cannot have an empty initialization sequence"); 345699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 345799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // For initialization steps that start with a single initializer, 345899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 345999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 346099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 346118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 346218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 346318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 346418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 346518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 3466523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 346718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 346818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 346918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 347018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 347118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 347218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 3473cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 347418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 347518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = Sema::OwningExprResult(S, ((Expr **)(Args.get()))[0]->Retain()); 347618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (CurInit.isInvalid()) 347718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 347818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 347918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 348018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 348118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 348218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 348320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 348420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 348520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Walk through the computed steps for the initialization sequence, 348620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 348716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 348820093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 348920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 349020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 349120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 349220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 349320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *CurInitExpr = (Expr *)CurInit.get(); 349499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor QualType SourceType = CurInitExpr? CurInitExpr->getType() : QualType(); 349520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 349620093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 349720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 349820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Overload resolution determined which function invoke; update the 349920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 35006bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.CheckAddressOfMemberAccess(CurInitExpr, Step->Function.FoundDecl); 3501b13b737a2450167c82e148590e8019b839ce6b98John McCall CurInit = S.FixOverloadedFunctionReference(move(CurInit), 35026bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 35039aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 350420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 350520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 350620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 350720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 350820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 350920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 351020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 35115cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson CXXBaseSpecifierArray BasePath; 35125cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 351320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 351420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 351520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 351620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInitExpr->getLocStart(), 35175cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson CurInitExpr->getSourceRange(), 35185cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 351920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 352020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 352120093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitCastExpr(Step->Type, 352220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastExpr::CK_DerivedToBase, 352388465d3e996e627bbaa11099b039ddab66d5af2cAnders Carlsson (Expr*)CurInit.release(), 35245cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson BasePath, 352520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Kind == SK_CastDerivedToBaseLValue)); 352620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 352720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 352820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 352920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 353020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (FieldDecl *BitField = CurInitExpr->getBitField()) { 353120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 353220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 3533d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 353420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 353520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << CurInitExpr->getSourceRange(); 353620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 353720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 353820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3539a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 3540093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson if (CurInitExpr->refersToVectorElement()) { 354141593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 3542093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 3543093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 3544093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << CurInitExpr->getSourceRange(); 3545a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 3546093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson return S.ExprError(); 3547093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 3548093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson 354920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 355020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 355120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 355220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckExceptionSpecCompatibility(CurInitExpr, DestType)) 355320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 35543aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 355520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 35563aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 355720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 3558a64a869312066ff6119d1d7ae03f88ce499e3f82Anders Carlsson // Reference binding does not have any corresponding ASTs. 3559a64a869312066ff6119d1d7ae03f88ce499e3f82Anders Carlsson 356020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 356120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckExceptionSpecCompatibility(CurInitExpr, DestType)) 356220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 356320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 356420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 356520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3566523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 3567523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Step->Type, Entity, move(CurInit), 3568523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 3569523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 3570523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 357120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 357220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 357320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 357420093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastExpr::CastKind CastKind = CastExpr::CK_Unknown; 357518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 35769aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 35779aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 35784154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 3579f0e0b17d0504d25b4673de015cf7401e2296323cDouglas Gregor bool IsLvalue = false; 3580b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 358120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 358220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(S); 358320093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation Loc = CurInitExpr->getLocStart(); 358420093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 3585b13b737a2450167c82e148590e8019b839ce6b98John McCall 358620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 358720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 358820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 358920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::MultiExprArg(S, 359020093b4bf698f292c664676987541d5103b65b15Douglas Gregor (void **)&CurInitExpr, 359120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 1), 359220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 359320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 359420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 359520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the an expression that constructs a temporary. 359620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 359720093b4bf698f292c664676987541d5103b65b15Douglas Gregor move_arg(ConstructorArgs)); 359820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 359920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 3600b13b737a2450167c82e148590e8019b839ce6b98John McCall 36019a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 36029aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 360320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 360420093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastKind = CastExpr::CK_ConstructorConversion; 360518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 360618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 360718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 360818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 36094154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 36104154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 361120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 361220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 3613b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 3614f0e0b17d0504d25b4673de015cf7401e2296323cDouglas Gregor IsLvalue = Conversion->getResultType()->isLValueReferenceType(); 361558e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall S.CheckMemberOperatorAccess(Kind.getLocation(), CurInitExpr, 0, 36169aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 3617b13b737a2450167c82e148590e8019b839ce6b98John McCall 361820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Should we move this initialization into a separate 361920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 362020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 36215fccd36204f11c8491325038e6ffcc784399098eDouglas Gregor if (S.PerformObjectArgumentInitialization(CurInitExpr, /*Qualifier=*/0, 36226bb8017bb9e828d118e15e59d71c66bba323c364John McCall FoundFn, Conversion)) 362320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 362420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 362520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Do a little dance to make sure that CurInit has the proper 362620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // pointer. 362720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); 362820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 362920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 36306bb8017bb9e828d118e15e59d71c66bba323c364John McCall CurInit = S.Owned(S.BuildCXXMemberCallExpr(CurInitExpr, FoundFn, 36316bb8017bb9e828d118e15e59d71c66bba323c364John McCall Conversion)); 363220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 363320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 363420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 363520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CastKind = CastExpr::CK_UserDefinedConversion; 36364154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 36374154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 363820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 363920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 36402f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor bool RequiresCopy = !IsCopy && 36412f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor getKind() != InitializationSequence::ReferenceBinding; 36422f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy || shouldBindAsTemporary(Entity)) 364318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 36444154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor else if (CreatedObject && shouldDestroyTemporary(Entity)) { 36454154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CurInitExpr = static_cast<Expr *>(CurInit.get()); 36464154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor QualType T = CurInitExpr->getType(); 36474154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 36484154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CXXDestructorDecl *Destructor 36494154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor = cast<CXXRecordDecl>(Record->getDecl())->getDestructor(S.Context); 36504154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.CheckDestructorAccess(CurInitExpr->getLocStart(), Destructor, 36514154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 36524154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.MarkDeclarationReferenced(CurInitExpr->getLocStart(), Destructor); 36534154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 36544154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 36554154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 365620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInitExpr = CurInit.takeAs<Expr>(); 365720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitCastExpr(CurInitExpr->getType(), 36584154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CastKind, 36594154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CurInitExpr, 3660f1b48b7014992155286d58bb1676f9f51031d18bAnders Carlsson CXXBaseSpecifierArray(), 36614154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor IsLvalue)); 366218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 36632f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 3664523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 3665523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor move(CurInit), /*IsExtraneousCopy=*/false); 36664154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 366720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 366820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 366920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 367020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 367120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 367220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 367320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ImpCastExprToType(CurInitExpr, Step->Type, 3674f1b48b7014992155286d58bb1676f9f51031d18bAnders Carlsson CastExpr::CK_NoOp, 367520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Kind == SK_QualificationConversionLValue); 367620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); 367720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit = S.Owned(CurInitExpr); 367820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 367920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3680f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 3681f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 3682f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor 3683f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor if (S.PerformImplicitConversion(CurInitExpr, Step->Type, *Step->ICS, 3684f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor Sema::AA_Converting, IgnoreBaseAccess)) 368520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.ExprError(); 368620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 368720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); 3688f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor CurInit = S.Owned(CurInitExpr); 368920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3690f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 3691f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor 3692d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 3693d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor InitListExpr *InitList = cast<InitListExpr>(CurInitExpr); 3694d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType Ty = Step->Type; 3695cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (S.CheckInitList(Entity, InitList, ResultType? *ResultType : Ty)) 3696d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return S.ExprError(); 3697d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3698d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 3699d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit = S.Owned(InitList); 3700d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 3701d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 370251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 370351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: { 3704d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor unsigned NumArgs = Args.size(); 370551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor 37069aa472c45d2bd81b7b52c225e8acc560d716db97John McCall = cast<CXXConstructorDecl>(Step->Function.Function); 3707b13b737a2450167c82e148590e8019b839ce6b98John McCall 370851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Build a call to the selected constructor. 370951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ASTOwningVector<&ActionBase::DeleteExpr> ConstructorArgs(S); 371051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceLocation Loc = Kind.getLocation(); 371151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 371251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Determine the arguments required to actually perform the constructor 371351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // call. 371451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (S.CompleteConstructorCall(Constructor, move(Args), 371551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Loc, ConstructorArgs)) 371651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return S.ExprError(); 371751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 3718d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor // Build the expression that constructs a temporary. 371991be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor if (Entity.getKind() == InitializedEntity::EK_Temporary && 3720d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor NumArgs != 1 && // FIXME: Hack to work around cast weirdness 372191be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct || 372291be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Kind.getKind() == InitializationKind::IK_Value)) { 372391be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor // An explicitly-constructed temporary, e.g., X(1, 2). 372491be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor unsigned NumExprs = ConstructorArgs.size(); 372591be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Expr **Exprs = (Expr **)ConstructorArgs.take(); 372691be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor S.MarkDeclarationReferenced(Kind.getLocation(), Constructor); 372791be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 372891be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Constructor, 372991be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Entity.getType(), 373091be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Kind.getLocation(), 373191be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Exprs, 373291be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor NumExprs, 373391be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Kind.getParenRange().getEnd())); 373491be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor } else 373591be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 373691be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Constructor, 373791be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor move_arg(ConstructorArgs), 373891be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor ConstructorInitRequiresZeroInit, 37399db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Base); 374051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (CurInit.isInvalid()) 374151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return S.ExprError(); 3742b13b737a2450167c82e148590e8019b839ce6b98John McCall 3743b13b737a2450167c82e148590e8019b839ce6b98John McCall // Only check access if all of that succeeded. 37449a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 37459aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.FoundDecl.getAccess()); 374618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 37472f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (shouldBindAsTemporary(Entity)) 374818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 37494154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 375051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 375151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 375271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 375371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 375416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 375516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 375616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (NextStep != StepEnd && 375716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor NextStep->Kind == SK_ConstructorInitialization) { 375816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 375916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 376016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 376116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 376216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor S.getLangOptions().CPlusPlus && 376316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 376471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) CXXZeroInitValueExpr(Step->Type, 376571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getBegin(), 376671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 376716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 376871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 376916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 377071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 377171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 377218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 377318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 377418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType SourceType = CurInitExpr->getType(); 377518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 377618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.CheckSingleAssignmentConstraints(Step->Type, CurInitExpr); 3777aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 3778aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 3779aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 3780aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 3781aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExpr) 3782aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 3783aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 3784aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 3785a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 378618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 378718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 3788a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor CurInitExpr, 3789a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 3790a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 3791a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 379218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return S.ExprError(); 3793a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 3794a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 379518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 379618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit.release(); 379718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.Owned(CurInitExpr); 379818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 379918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 3800cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3801cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 3802cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 3803cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman CheckStringInit(CurInitExpr, ResultType ? *ResultType : Ty, S); 3804cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 3805cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 380620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 380720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 380820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 380920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return move(CurInit); 381020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 381120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 381220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 381320093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 381420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 381520093b4bf698f292c664676987541d5103b65b15Douglas Gregorbool InitializationSequence::Diagnose(Sema &S, 381620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 381720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 381820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 381920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind != FailedSequence) 382020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 382120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3822d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 382320093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 382420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 38259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 38269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 38279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 38289db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 38299db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 38309db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 38319db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 383220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 383320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 383420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 383520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 383620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 383720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 383820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 383920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 38406bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 38416bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 384220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ResolveAddressOfOverloadedFunction(Args[0], 384320093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 38446bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 38456bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 384620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 38476bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 384820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 384920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 38504a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 385120093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 385220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 385318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 385418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 385518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 385618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 385718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 385818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 385918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 386018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 386118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 3862cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(FailedCandidateSet, Sema::OCD_ViableCandidates, 3863cbce60633c9864261105b289473e5a3ed7b4a729John McCall Args, NumArgs); 386420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 386520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 386620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 386720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 386820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 386920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 3870cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(FailedCandidateSet, Sema::OCD_AllCandidates, 3871cbce60633c9864261105b289473e5a3ed7b4a729John McCall Args, NumArgs); 387220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 387320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 387420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 387520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 387620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 387720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 387820093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 387920093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Ovl = S.BestViableFunction(FailedCandidateSet, 388020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind.getLocation(), 388120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Best); 388220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 388320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 388420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Best->Function->isDeleted(); 388520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 38869f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 388720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 388820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 388920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 389020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 389120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 38929f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 389320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 389420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 389520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 389620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 389720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 389820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 389920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), 390020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 390120093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 390220093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 3903ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 390420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 390520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 390620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 390720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 390820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 390920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 391020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 391120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 391220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 391320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 391420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 391520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 391620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 391720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 391820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 391920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 392020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 392120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 392220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 392320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 392420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Args[0]->isLvalue(S.Context) == Expr::LV_Valid) 392520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 392620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 392720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 392820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 392920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ConversionFailed: 393018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_init_conversion_failed) 393118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 393220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 393320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Args[0]->isLvalue(S.Context) == Expr::LV_Valid) 393420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 393520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 3936d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 3937d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3938d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 393999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 394099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 394199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 394299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor R = SourceRange(InitList->getInit(1)->getLocStart(), 394399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 394499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor else 394599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor R = SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 3946d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3947d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 394899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor << /*scalar=*/2 << R; 3949d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 3950d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3951d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3952d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 3953d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 3954d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 3955d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 3956d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3957d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 3958d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 3959d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 3960d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 396151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 396251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 396351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 396451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 396551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ArgsRange = SourceRange(Args[0]->getLocStart(), 396651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 396751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 396851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 396951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 397051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 397151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 397251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 397351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 397481201626aa08bcc9d05c8b3c6a1d38a7d577c3ceJohn McCall S.PrintOverloadCandidates(FailedCandidateSet, 3975cbce60633c9864261105b289473e5a3ed7b4a729John McCall Sema::OCD_ViableCandidates, Args, NumArgs); 397651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 397751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 397851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 39799db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 39809db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 39819db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 39829db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 39839db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 39849db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 39859db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 39869db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 39879db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 39889db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 39899db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 39909db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 39919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 39929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 39939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 39949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 39959db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 39969db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 39979db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 39989db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 39999db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 40009db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 40019db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 40029db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 40039db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 40049db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 40059db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 40069db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 40079db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 40089db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 40099db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 40109db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 40119db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Record->getDecl()->getLocation(), 40129db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 40139db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 40149db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 40159db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 40169db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 40179db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 401851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 401951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 4020cbce60633c9864261105b289473e5a3ed7b4a729John McCall S.PrintOverloadCandidates(FailedCandidateSet, Sema::OCD_AllCandidates, 4021cbce60633c9864261105b289473e5a3ed7b4a729John McCall Args, NumArgs); 402251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 402351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 402451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 402551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 402651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << true << DestType << ArgsRange; 402751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 402851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadingResult Ovl = S.BestViableFunction(FailedCandidateSet, 402951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Kind.getLocation(), 403051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Best); 403151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (Ovl == OR_Deleted) { 403251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 403351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << Best->Function->isDeleted(); 403451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } else { 403551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 403651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 403751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 403851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 403951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 404051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 404151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 404251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 404351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 404451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 404551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 404699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 404799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 40489db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 40499db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 40509db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 40519db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 40529db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 40539db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 40549db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 40559db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 40569db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 40579db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 40589db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 40599db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 40609db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 40619db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 40629db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 40639db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 40649db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 406599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 406620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 406720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 4068a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 406920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 407020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 407118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4072de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump(llvm::raw_ostream &OS) const { 4073de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 4074de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 4075de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 4076de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 4077de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 4078de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 4079de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4080de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4081de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 4082de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 4083de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4084de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4085de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 4086de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 4087de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4088de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4089de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 4090de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 4091de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4092de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4093de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 4094de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 4095de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4096de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4097de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 4098de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 4099de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4100de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4101de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 4102de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 4103de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4104de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4105de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 4106de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 4107de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4108de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4109de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 4110de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 4111de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4112de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4113de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 4114de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 4115de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4116de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4117de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 4118de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 4119de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4120de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4121de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 4122de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 4123de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4124de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4125de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 4126de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 4127de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4128de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4129de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 4130de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 4131de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4132de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4133de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 4134de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 4135de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4136de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4137de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 4138de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 4139de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4140de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4141de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 4142de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 4143de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4144de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4145de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 4146de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4147de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4148de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4149de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 4150de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Dependent sequence: "; 4151de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4152de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4153de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case UserDefinedConversion: 4154de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "User-defined conversion sequence: "; 4155de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4156de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4157de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ConstructorInitialization: 4158de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Constructor initialization sequence: "; 4159de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4160de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4161de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ReferenceBinding: 4162de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Reference binding: "; 4163de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4164de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4165de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ListInitialization: 4166de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "List initialization: "; 4167de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4168de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4169de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ZeroInitialization: 4170de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Zero initialization\n"; 4171de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4172de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4173de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case NoInitialization: 4174de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "No initialization\n"; 4175de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4176de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4177de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case StandardConversion: 4178de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Standard conversion: "; 4179de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4180de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4181de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case CAssignment: 4182de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment: "; 4183de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4184de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4185de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case StringInit: 4186de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "String initialization: "; 4187de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4188de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4189de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4190de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 4191de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 4192de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 4193de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4194de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4195de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 4196de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4197de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 4198de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4199de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4200de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 4201de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 4202de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4203de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4204de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 4205de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 4206de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4207de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4208de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 4209de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 4210de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4211de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4212de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 4213de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 4214de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4215de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4216523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 4217523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 4218523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 4219523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4220de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 4221900fc6388e803868a34b9483510c345e9b49d7ebBenjamin Kramer OS << "user-defined conversion via " << S->Function.Function; 4222de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4223de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4224de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 4225de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 4226de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4227de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 4228de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 4229de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4230de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4231de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 4232de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 4233de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 4234de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 4235de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4236de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4237de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 4238de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "list initialization"; 4239de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4240de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4241de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 4242de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 4243de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4244de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4245de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 4246de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 4247de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4248de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4249de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 4250de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 4251de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4252de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4253de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 4254de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 4255de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4256de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4257de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4258de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 4259de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4260de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 4261de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 4262de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 4263de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 426418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 426518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 426618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 426718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::OwningExprResult 426818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 426918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 427018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OwningExprResult Init) { 427118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 427218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 427318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 427418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Expr *InitE = (Expr *)Init.get(); 427518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 427618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 427718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 427818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 427918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 428018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 428118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc); 428218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 428318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 428418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Seq.Perform(*this, Entity, Kind, 428518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor MultiExprArg(*this, (void**)&InitE, 1)); 428618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 4287