SemaInit.cpp revision 2be7e90b81509204b99b7bbf9753ad17b894a12a
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// 140cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===----------------------------------------------------------------------===// 150cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1619510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/Designator.h" 17e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Initialization.h" 18e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Lookup.h" 192d88708cbe4e4ec5e04e4acb6bd7f5be68557379John McCall#include "clang/Sema/SemaInternal.h" 201e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner#include "clang/Lex/Preprocessor.h" 210cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff#include "clang/AST/ASTContext.h" 227cd088e519d7e6caa4c4c12db52e0e4ae35d25c2John McCall#include "clang/AST/DeclObjC.h" 232078bb9c9336da56ea521e98e718556b227541f6Anders Carlsson#include "clang/AST/ExprCXX.h" 2479e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner#include "clang/AST/ExprObjC.h" 25d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor#include "clang/AST/TypeLoc.h" 2620093b4bf698f292c664676987541d5103b65b15Douglas Gregor#include "llvm/Support/ErrorHandling.h" 27c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor#include <map> 2805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorusing namespace clang; 290cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 30dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 31dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Sema Initialization Checking 32dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 33dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 34ce6c9b7da219c8640a0559f75770cfc6622de083John McCallstatic Expr *IsStringInit(Expr *Init, const ArrayType *AT, 35ce6c9b7da219c8640a0559f75770cfc6622de083John McCall ASTContext &Context) { 368718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman if (!isa<ConstantArrayType>(AT) && !isa<IncompleteArrayType>(AT)) 378718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman return 0; 388718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman 398879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // See if this is a string literal or @encode. 408879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner Init = Init->IgnoreParens(); 411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 428879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Handle @encode, which is a narrow string. 438879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (isa<ObjCEncodeExpr>(Init) && AT->getElementType()->isCharType()) 448879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner return Init; 458879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 468879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Otherwise we can only handle string literals. 478879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner StringLiteral *SL = dyn_cast<StringLiteral>(Init); 48220b6369d7717bfe6894b46cef055d3e763827f2Chris Lattner if (SL == 0) return 0; 49bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman 50bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman QualType ElemTy = Context.getCanonicalType(AT->getElementType()); 518879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // char array can be initialized with a narrow string. 528879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Only allow char x[] = "foo"; not char x[] = L"foo"; 538879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (!SL->isWide()) 54bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman return ElemTy->isCharType() ? Init : 0; 558879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 56bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // wchar_t array can be initialized with a wide string: C99 6.7.8p15 (with 57bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // correction from DR343): "An array with element type compatible with a 58bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // qualified or unqualified version of wchar_t may be initialized by a wide 59bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman // string literal, optionally enclosed in braces." 60bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman if (Context.typesAreCompatible(Context.getWCharType(), 61bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman ElemTy.getUnqualifiedType())) 628879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner return Init; 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 64dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner return 0; 65dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 66dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 67ce6c9b7da219c8640a0559f75770cfc6622de083John McCallstatic Expr *IsStringInit(Expr *init, QualType declType, ASTContext &Context) { 68ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = Context.getAsArrayType(declType); 69ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (!arrayType) return 0; 70ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 71ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return IsStringInit(init, arrayType, Context); 72ce6c9b7da219c8640a0559f75770cfc6622de083John McCall} 73ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 74fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCallstatic void CheckStringInit(Expr *Str, QualType &DeclT, const ArrayType *AT, 75fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall Sema &S) { 7679e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner // Get the length of the string as parsed. 7779e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner uint64_t StrLength = 7879e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner cast<ConstantArrayType>(Str->getType())->getSize().getZExtValue(); 7979e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner 801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 81dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner if (const IncompleteArrayType *IAT = dyn_cast<IncompleteArrayType>(AT)) { 821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // C99 6.7.8p14. We have an array of character type with unknown size 83dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // being initialized to a string literal. 84dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner llvm::APSInt ConstVal(32); 8519da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner ConstVal = StrLength; 86dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // Return a new array type (C99 6.7.8p22). 8746a617a792bfab0d9b1e057371ea3b9540802226John McCall DeclT = S.Context.getConstantArrayType(IAT->getElementType(), 8846a617a792bfab0d9b1e057371ea3b9540802226John McCall ConstVal, 8946a617a792bfab0d9b1e057371ea3b9540802226John McCall ArrayType::Normal, 0); 9019da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner return; 91dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner } 921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 938718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman const ConstantArrayType *CAT = cast<ConstantArrayType>(AT); 941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 95bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // We have an array of character type with known size. However, 968718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // the size may be smaller or larger than the string we are initializing. 978718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // FIXME: Avoid truncation for 64-bit length strings. 98bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (S.getLangOptions().CPlusPlus) { 99b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (StringLiteral *SL = dyn_cast<StringLiteral>(Str)) { 100b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // For Pascal strings it's OK to strip off the terminating null character, 101b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // so the example below is valid: 102b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // 103b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // unsigned char a[2] = "\pa"; 104b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (SL->isPascal()) 105b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson StrLength--; 106b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson } 107b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson 108bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // [dcl.init.string]p2 109bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength > CAT->getSize().getZExtValue()) 110bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman S.Diag(Str->getSourceRange().getBegin(), 111bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::err_initializer_string_for_char_array_too_long) 112bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 113bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } else { 114bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // C99 6.7.8p14. 115bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength-1 > CAT->getSize().getZExtValue()) 116bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman S.Diag(Str->getSourceRange().getBegin(), 117bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::warn_initializer_string_for_char_array_too_long) 118bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 119bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } 1201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1218718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // Set the type to the actual size that we are initializing. If we have 1228718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // something like: 1238718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // char x[1] = "foo"; 1248718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // then this will set the string literal's type to char[1]. 1258718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman Str->setType(DeclT); 126dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 127dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 128dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 129dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Semantic checking for initializer lists. 130dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 131dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 1329e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// @brief Semantic checking for initializer lists. 1339e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1349e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// The InitListChecker class contains a set of routines that each 1359e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// handle the initialization of a certain kind of entity, e.g., 1369e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// arrays, vectors, struct/union types, scalars, etc. The 1379e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// InitListChecker itself performs a recursive walk of the subobject 1389e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure of the type to be initialized, while stepping through 1399e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// the initializer list one element at a time. The IList and Index 1409e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// parameters to each of the Check* routines contain the active 1419e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// (syntactic) initializer list and the index into that initializer 1429e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list that represents the current initializer. Each routine is 1439e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// responsible for moving that Index forward as it consumes elements. 1449e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1459e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// Each Check* routine also has a StructuredList/StructuredIndex 14663e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// arguments, which contains the current "structured" (semantic) 1479e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initializer list and the index into that initializer list where we 1489e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// are copying initializers as we map them over to the semantic 1499e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. Once we have completed our recursive walk of the subobject 1509e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure, we will have constructed a full semantic initializer 1519e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. 1529e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1539e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// C99 designators cause changes in the initializer list traversal, 1549e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// because they make the initialization "jump" into a specific 1559e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// subobject and then continue the initialization from that 1569e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// point. CheckDesignatedInitializer() recursively steps into the 1579e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// designated subobject and manages backing out the recursion to 1589e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initialize the subobjects after the one designated. 1598b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattnernamespace { 160c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorclass InitListChecker { 1610820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner Sema &SemaRef; 162c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool hadError; 163c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor std::map<InitListExpr *, InitListExpr *> SyntacticToSemantic; 164c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *FullyStructuredList; 1651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckImplicitInitList(const InitializedEntity &Entity, 167987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, QualType T, 1689e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 169eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 170eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1718ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckExplicitInitList(const InitializedEntity &Entity, 17246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 1739e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 174eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 175eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1768ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckListElementTypes(const InitializedEntity &Entity, 17746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &DeclType, 1781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 179c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1809e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 181eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 182eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1838ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckSubElementType(const InitializedEntity &Entity, 18446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType ElemType, 185c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1869e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1879e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckScalarType(const InitializedEntity &Entity, 18946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 190c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1919e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1929e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckReferenceType(const InitializedEntity &Entity, 1948ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 195930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 196930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 197930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex); 1988ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckVectorType(const InitializedEntity &Entity, 19946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, unsigned &Index, 2009e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2019e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2028ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckStructUnionTypes(const InitializedEntity &Entity, 2032bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, QualType DeclType, 2041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator Field, 205c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2069e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 207eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 208eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 2098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckArrayType(const InitializedEntity &Entity, 210784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 2111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::APSInt elementIndex, 212c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2139e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2149e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2158ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson bool CheckDesignatedInitializer(const InitializedEntity &Entity, 2169a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, DesignatedInitExpr *DIE, 217711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 2181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &CurrentObjectType, 219c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor RecordDecl::field_iterator *NextField, 220c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor llvm::APSInt *NextElementIndex, 221c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 222c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 223c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &StructuredIndex, 224eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 225eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject); 226c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 227c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor QualType CurrentObjectType, 228c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 229c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned StructuredIndex, 230c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor SourceRange InitRange); 2319e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor void UpdateStructuredListElement(InitListExpr *StructuredList, 2329e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex, 233c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor Expr *expr); 234c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numArrayElements(QualType DeclType); 235c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numStructUnionElements(QualType DeclType); 236930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 237d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor void FillInValueInitForField(unsigned Init, FieldDecl *Field, 238d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 239d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 240cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor void FillInValueInitializations(const InitializedEntity &Entity, 241cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 242c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorpublic: 243cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker(Sema &S, const InitializedEntity &Entity, 244cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *IL, QualType &T); 245c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool HadError() { return hadError; } 246c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 247c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // @brief Retrieves the fully-structured initializer list used for 248c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // semantic analysis and code generation. 249c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getFullyStructuredList() const { return FullyStructuredList; } 250c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor}; 2518b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattner} // end anonymous namespace 25268355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 253d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregorvoid InitListChecker::FillInValueInitForField(unsigned Init, FieldDecl *Field, 254d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 255dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitListExpr *ILE, 256d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor bool &RequiresSecondPass) { 257d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SourceLocation Loc = ILE->getSourceRange().getBegin(); 258d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned NumInits = ILE->getNumInits(); 259dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity MemberEntity 260d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = InitializedEntity::InitializeMember(Field, &ParentEntity); 261d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 262d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // FIXME: We probably don't need to handle references 263d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // specially here, since value-initialization of references is 264d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // handled in InitializationSequence. 265d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->getType()->isReferenceType()) { 266d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // C++ [dcl.init.aggr]p9: 267d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // If an incomplete or empty initializer-list leaves a 268d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // member of reference type uninitialized, the program is 269d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // ill-formed. 270d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Loc, diag::err_init_reference_member_uninitialized) 271d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << Field->getType() 272d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << ILE->getSyntacticForm()->getSourceRange(); 273d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Field->getLocation(), 274d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor diag::note_uninit_reference_member); 275d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 276d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 277d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 278dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 279d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 280d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor true); 281d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationSequence InitSeq(SemaRef, MemberEntity, Kind, 0, 0); 282d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (!InitSeq) { 283d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitSeq.Diagnose(SemaRef, MemberEntity, Kind, 0, 0); 284d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 285d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 286d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 287dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 28860d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult MemberInit 289f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, MemberEntity, Kind, MultiExprArg()); 290d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (MemberInit.isInvalid()) { 291d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 292d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 293d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 294dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 295d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) { 296d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Do nothing 297d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (Init < NumInits) { 298d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->setInit(Init, MemberInit.takeAs<Expr>()); 299d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitSeq.getKind() 300d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor == InitializationSequence::ConstructorInitialization) { 301d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Value-initialization requires a constructor call, so 302d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // extend the initializer list to include the constructor 303d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // call and make a note that we'll need to take another pass 304d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // through the initializer list. 305709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek ILE->updateInit(SemaRef.Context, Init, MemberInit.takeAs<Expr>()); 306d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor RequiresSecondPass = true; 307d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 308d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitListExpr *InnerILE 309d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 310dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(MemberEntity, InnerILE, 311dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi RequiresSecondPass); 312d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor} 313d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 3144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Recursively replaces NULL values within the given initializer list 3154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// with expressions that perform value-initialization of the 3164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// appropriate type. 317dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 318cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::FillInValueInitializations(const InitializedEntity &Entity, 319cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, 320cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool &RequiresSecondPass) { 3211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((ILE->getType() != SemaRef.Context.VoidTy) && 322930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor "Should not have void type"); 32387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor SourceLocation Loc = ILE->getSourceRange().getBegin(); 32487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (ILE->getSyntacticForm()) 32587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor Loc = ILE->getSyntacticForm()->getSourceRange().getBegin(); 3261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3276217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) { 328d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion() && 329d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->getInitializedFieldInUnion()) 330d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(0, ILE->getInitializedFieldInUnion(), 331d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Entity, ILE, RequiresSecondPass); 332d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor else { 333d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned Init = 0; 334d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor for (RecordDecl::field_iterator 335d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field = RType->getDecl()->field_begin(), 336d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FieldEnd = RType->getDecl()->field_end(); 337d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field != FieldEnd; ++Field) { 338d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->isUnnamedBitfield()) 339d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor continue; 340d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 341d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 34287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 34387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 344d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(Init, *Field, Entity, ILE, RequiresSecondPass); 345d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 346cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 347cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 348d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ++Init; 349d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 350d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Only look at the first initialization of a union. 351d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion()) 352d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor break; 353d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 3544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 3554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType ElementType; 3601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 361cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializedEntity ElementEntity = Entity; 36287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumInits = ILE->getNumInits(); 36387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumElements = NumInits; 3640820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (const ArrayType *AType = SemaRef.Context.getAsArrayType(ILE->getType())) { 3654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = AType->getElementType(); 36687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) 36787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = CAType->getSize().getZExtValue(); 368dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 369cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 370183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = ILE->getType()->getAs<VectorType>()) { 3714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = VType->getElementType(); 37287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = VType->getNumElements(); 373dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 374cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 3751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else 3764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = ILE->getType(); 3771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 378dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor for (unsigned Init = 0; Init != NumElements; ++Init) { 38016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (hadError) 38116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return; 38216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor 383d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement || 384d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson ElementEntity.getKind() == InitializedEntity::EK_VectorElement) 385cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity.setElementIndex(Init); 386cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 38787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 388cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 389cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor true); 390cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationSequence InitSeq(SemaRef, ElementEntity, Kind, 0, 0); 391cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!InitSeq) { 392cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitSeq.Diagnose(SemaRef, ElementEntity, Kind, 0, 0); 39387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor hadError = true; 39487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 39587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 39687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 39760d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult ElementInit 398f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, ElementEntity, Kind, MultiExprArg()); 399cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (ElementInit.isInvalid()) { 40016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor hadError = true; 401cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 402cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 403cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 404cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (hadError) { 405cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // Do nothing 406cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } else if (Init < NumInits) { 4073e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4083e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // of the "holes" in the array. 4093e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) 4103e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4113e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis else 4123e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setInit(Init, ElementInit.takeAs<Expr>()); 4134423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } else { 4144423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4154423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // of the rest of elements and exit. 4164423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) { 4174423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4184423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis return; 4194423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 4204423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis 4214423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis if (InitSeq.getKind() 422cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor == InitializationSequence::ConstructorInitialization) { 4234423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // Value-initialization requires a constructor call, so 4244423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // extend the initializer list to include the constructor 4254423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // call and make a note that we'll need to take another pass 4264423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // through the initializer list. 4274423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->updateInit(SemaRef.Context, Init, ElementInit.takeAs<Expr>()); 4284423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis RequiresSecondPass = true; 4294423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 430cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 431ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else if (InitListExpr *InnerILE 432cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 433cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(ElementEntity, InnerILE, RequiresSecondPass); 4344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 4354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 4364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 43768355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 438cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::InitListChecker(Sema &S, const InitializedEntity &Entity, 439cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *IL, QualType &T) 4400820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner : SemaRef(S) { 4410cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff hadError = false; 442c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 443b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman unsigned newIndex = 0; 4444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 4451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FullyStructuredList 446ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor = getStructuredSubobjectInit(IL, newIndex, T, 0, 0, IL->getSourceRange()); 447dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckExplicitInitList(Entity, IL, T, newIndex, 44846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson FullyStructuredList, newStructuredIndex, 449eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor /*TopLevelObject=*/true); 450c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 451cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!hadError) { 452cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool RequiresSecondPass = false; 453cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(Entity, FullyStructuredList, RequiresSecondPass); 45416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (RequiresSecondPass && !hadError) 455dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(Entity, FullyStructuredList, 456cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor RequiresSecondPass); 457cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 4580cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4590cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4600cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numArrayElements(QualType DeclType) { 461638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // FIXME: use a proper constant 462638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman int maxElements = 0x7FFFFFFF; 463c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const ConstantArrayType *CAT = 4640820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 4650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = static_cast<int>(CAT->getSize().getZExtValue()); 4660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 4670cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return maxElements; 4680cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numStructUnionElements(QualType DeclType) { 4716217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *structDecl = DeclType->getAs<RecordType>()->getDecl(); 4724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor int InitializableMembers = 0; 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (RecordDecl::field_iterator 47417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = structDecl->field_begin(), 47517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = structDecl->field_end(); 4764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Field != FieldEnd; ++Field) { 4774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if ((*Field)->getIdentifier() || !(*Field)->isBitField()) 4784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++InitializableMembers; 4794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 48039ba4aeca296b1c9f04bde7d9d3cbbf129f1abd3Argyrios Kyrtzidis if (structDecl->isUnion()) 481f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return std::min(InitializableMembers, 1); 482f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return InitializableMembers - structDecl->hasFlexibleArrayMember(); 4830cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4840cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4858ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckImplicitInitList(const InitializedEntity &Entity, 486987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, 4874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType T, unsigned &Index, 4884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 489eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 490eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 4910cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff int maxElements = 0; 4921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (T->isArrayType()) 4940cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numArrayElements(T); 495fb87b89fc9eb103e19fb8e4b925c23f0bd091b99Douglas Gregor else if (T->isRecordType()) 4960cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numStructUnionElements(T); 497b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman else if (T->isVectorType()) 498183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall maxElements = T->getAs<VectorType>()->getNumElements(); 4990cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff else 5000cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff assert(0 && "CheckImplicitInitList(): Illegal type"); 501b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 502402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman if (maxElements == 0) { 5030820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(ParentIList->getInit(Index)->getLocStart(), 504402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman diag::err_implicit_empty_initializer); 5054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 506402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman hadError = true; 507402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman return; 508402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman } 509402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman 5104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Build a structured initializer list corresponding to this subobject. 5114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredSubobjectInitList 5121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = getStructuredSubobjectInit(ParentIList, Index, T, StructuredList, 5131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredIndex, 514ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor SourceRange(ParentIList->getInit(Index)->getSourceRange().getBegin(), 515ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor ParentIList->getSourceRange().getEnd())); 5164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredSubobjectInitIndex = 0; 5174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 5184c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Check the element types and build the structural subobject. 51987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned StartIndex = Index; 520dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, ParentIList, T, 521987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 5221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredSubobjectInitList, 523eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredSubobjectInitIndex, 524eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 52587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned EndIndex = (Index == StartIndex? StartIndex : Index - 1); 526a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor StructuredSubobjectInitList->setType(T); 527a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor 528ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor // Update the structured sub-object initializer so that it's ending 52987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor // range corresponds with the end of the last initializer it used. 53087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (EndIndex < ParentIList->getNumInits()) { 5311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation EndLoc 53287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor = ParentIList->getInit(EndIndex)->getSourceRange().getEnd(); 53387fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor StructuredSubobjectInitList->setRBraceLoc(EndLoc); 53487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 535dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5361e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner // Warn about missing braces. 5371e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner if (T->isArrayType() || T->isRecordType()) { 53847f164e15b9358b51ae65f8249d56842f8750767Tanya Lattner SemaRef.Diag(StructuredSubobjectInitList->getLocStart(), 53947f164e15b9358b51ae65f8249d56842f8750767Tanya Lattner diag::warn_missing_braces) 5401e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner << StructuredSubobjectInitList->getSourceRange() 541dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi << FixItHint::CreateInsertion(StructuredSubobjectInitList->getLocStart(), 542849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor "{") 543849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(SemaRef.PP.getLocForEndOfToken( 544dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi StructuredSubobjectInitList->getLocEnd()), 545849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor "}"); 5461e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner } 5470cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5480cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5498ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckExplicitInitList(const InitializedEntity &Entity, 55046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 5514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 553eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 554eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 555c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman assert(IList->isExplicit() && "Illegal Implicit InitListExpr"); 5564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = StructuredList; 5574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList->setSyntacticForm(IList); 558dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, IList, T, /*SubobjectIsDesignatorContext=*/true, 55946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson Index, StructuredList, StructuredIndex, TopLevelObject); 5606398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor QualType ExprTy = T.getNonLValueExprType(SemaRef.Context); 5616398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor IList->setType(ExprTy); 5626398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor StructuredList->setType(ExprTy); 563638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (hadError) 564638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 565c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 566638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (Index < IList->getNumInits()) { 567c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman // We have leftover initializers 568e540858b289b23653bcb23646f135729203635cbEli Friedman if (StructuredIndex == 1 && 569e540858b289b23653bcb23646f135729203635cbEli Friedman IsStringInit(StructuredList->getInit(0), T, SemaRef.Context)) { 5707c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers_in_char_array_initializer; 571e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 5727c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor DK = diag::err_excess_initializers_in_char_array_initializer; 573e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 574e540858b289b23653bcb23646f135729203635cbEli Friedman } 575bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman // Special-case 5760820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 577dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getInit(Index)->getSourceRange(); 578d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman } else if (!T->isIncompleteType()) { 579b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // Don't complain for incomplete types, since we'll get an error 580b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // elsewhere 581eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType CurrentObjectType = StructuredList->getType(); 5821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int initKind = 583eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isArrayType()? 0 : 584eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isVectorType()? 1 : 585eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isScalarType()? 2 : 586eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isUnionType()? 3 : 587eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 4; 5887c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 5897c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers; 590e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 591e540858b289b23653bcb23646f135729203635cbEli Friedman DK = diag::err_excess_initializers; 5920863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman hadError = true; 5930863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman } 5940863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman if (SemaRef.getLangOptions().OpenCL && initKind == 1) { 5950863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman DK = diag::err_excess_initializers; 596e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 597e540858b289b23653bcb23646f135729203635cbEli Friedman } 5987c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 5990820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 600eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << initKind << IList->getInit(Index)->getSourceRange(); 601c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 602c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 603cda25a977e4b7fe4e080b87586410eaeab7b62f6Eli Friedman 604759f25237864f3a3cc23eb01f0c0ce6edcc9342dEli Friedman if (T->isScalarType() && !TopLevelObject) 6050820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init) 606a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor << IList->getSourceRange() 607849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocStart()) 608849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocEnd()); 6090cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6100cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6118ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, 61246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &DeclType, 61487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool SubobjectIsDesignatorContext, 6154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 617eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 618eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 619c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (DeclType->isScalarType()) { 62046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, DeclType, Index, 62146f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 622c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (DeclType->isVectorType()) { 623dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckVectorType(Entity, IList, DeclType, Index, 62446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 625d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor } else if (DeclType->isAggregateType()) { 626d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor if (DeclType->isRecordType()) { 6276217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 6282bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 6294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubobjectIsDesignatorContext, Index, 630eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 631eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 63287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } else if (DeclType->isArrayType()) { 633f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor llvm::APSInt Zero( 6340820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 635f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor false); 636dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, DeclType, Zero, 637784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson SubobjectIsDesignatorContext, Index, 6384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 639ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else 6404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert(0 && "Aggregate that isn't a structure or array?!"); 641613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 642613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 6434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 6440820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 645d162584991885ab004a02573a73ce06422b921fcChris Lattner << DeclType; 646d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 647930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isRecordType()) { 648930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init]p14: 649930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] If the class is an aggregate (8.5.1), and the initializer 650930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // is a brace-enclosed list, see 8.5.1. 651930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 652930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Note: 8.5.1 is handled below; here, we diagnose the case where 653930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // we have an initializer list and a destination type that is not 654930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an aggregate. 655930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // FIXME: In C++0x, this is yet another form of initialization. 6560820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 657930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType << IList->getSourceRange(); 658930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 659930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 6608ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 6618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 662c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (DeclType->isObjCObjectType()) { 6634d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor SemaRef.Diag(IList->getLocStart(), diag::err_init_objc_class) 6644d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor << DeclType; 6654d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 6660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 6674d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 6684d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor << DeclType; 6694d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 6700cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 6710cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6720cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6738ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 67446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 6764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 6784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 6796fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 680c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 681c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman unsigned newIndex = 0; 6824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 6831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *newStructuredList 6844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor = getStructuredSubobjectInit(IList, Index, ElemType, 6854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex, 6864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubInitList->getSourceRange()); 68746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 6884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor newStructuredList, newStructuredIndex); 6894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 6904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 691fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 692c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (ElemType->isScalarType()) { 693fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckScalarType(Entity, IList, ElemType, Index, 694fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 695930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 696fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckReferenceType(Entity, IList, ElemType, Index, 697fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 698fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 699930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 700fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (const ArrayType *arrayType = SemaRef.Context.getAsArrayType(ElemType)) { 701fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // arrayType can be incomplete if we're initializing a flexible 702fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // array member. There's nothing we can do with the completed 703fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // type here, though. 704930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 705fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Expr *Str = IsStringInit(expr, arrayType, SemaRef.Context)) { 706fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckStringInit(Str, ElemType, arrayType, SemaRef); 707fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 708fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 709fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 710930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 711930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 712fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization. 713fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 714fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else if (SemaRef.getLangOptions().CPlusPlus) { 715930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 716fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // All implicit type conversions (clause 4) are considered when 717fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // initializing the aggregate member with an ini- tializer from 718fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // an initializer-list. If the initializer can initialize a 719fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // member, the member is initialized. [...] 720fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 721fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // FIXME: Better EqualLoc? 722fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind Kind = 723fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 724fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 725fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 726fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Seq) { 727fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ExprResult Result = 728fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall Seq.Perform(SemaRef, Entity, Kind, MultiExprArg(&expr, 1)); 729fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Result.isInvalid()) 730fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall hadError = true; 731fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 732fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall UpdateStructuredListElement(StructuredList, StructuredIndex, 733fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall Result.takeAs<Expr>()); 734fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 735fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 736fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 737fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 738fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 739fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 740fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C99 6.7.8p13: 7411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 742fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // The initializer for a structure or union object that has 743fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // automatic storage duration shall be either an initializer 744fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // list as described below, or a single expression that has 745fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // compatible structure or union type. In the latter case, the 746fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // initial value of the object, including unnamed members, is 747fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // that of the expression. 748429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult ExprRes = SemaRef.Owned(expr); 749fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if ((ElemType->isRecordType() || ElemType->isVectorType()) && 750429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SemaRef.CheckSingleAssignmentConstraints(ElemType, ExprRes) 751fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall == Sema::Compatible) { 752429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 753429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 754429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley else { 755429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes = SemaRef.DefaultFunctionArrayLvalueConversion(ExprRes.take()); 756429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 757429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 758429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 759429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley UpdateStructuredListElement(StructuredList, StructuredIndex, 760429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.takeAs<Expr>()); 761930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 762fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 763930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 764429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.release(); 765fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 766fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 767fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 768fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C++ [dcl.init.aggr]p12: 769fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // 770fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // [...] Otherwise, if the member is itself a non-empty 771fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // subaggregate, brace elision is assumed and the initializer is 772fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // considered for the initialization of the first member of 773fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // the subaggregate. 774fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (ElemType->isAggregateType() || ElemType->isVectorType()) { 775fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 776fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredIndex); 777fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 778fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 779fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // We cannot initialize this element, so let 780fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // PerformCopyInitialization produce the appropriate diagnostic. 781fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 782fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall SemaRef.Owned(expr)); 783fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall hadError = true; 784fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 785fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 786930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 787b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 788b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 7898ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 79046f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 7916fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 7924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 794b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Index >= IList->getNumInits()) { 7950820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_empty_scalar_initializer) 796dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getSourceRange(); 797bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman hadError = true; 7984c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 7994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 800bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 8010cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 802b934c2d77144471f35c5ebae9e925b056dac8112John McCall 803b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *expr = IList->getInit(Index); 804b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { 805b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.Diag(SubIList->getLocStart(), 806b934c2d77144471f35c5ebae9e925b056dac8112John McCall diag::warn_many_braces_around_scalar_init) 807b934c2d77144471f35c5ebae9e925b056dac8112John McCall << SubIList->getSourceRange(); 808b934c2d77144471f35c5ebae9e925b056dac8112John McCall 809b934c2d77144471f35c5ebae9e925b056dac8112John McCall CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, 810b934c2d77144471f35c5ebae9e925b056dac8112John McCall StructuredIndex); 811b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 812b934c2d77144471f35c5ebae9e925b056dac8112John McCall } else if (isa<DesignatedInitExpr>(expr)) { 813b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.Diag(expr->getSourceRange().getBegin(), 814b934c2d77144471f35c5ebae9e925b056dac8112John McCall diag::err_designator_for_scalar_init) 815b934c2d77144471f35c5ebae9e925b056dac8112John McCall << DeclType << expr->getSourceRange(); 816b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; 817b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 818b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 819b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 820b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 821b934c2d77144471f35c5ebae9e925b056dac8112John McCall 822b934c2d77144471f35c5ebae9e925b056dac8112John McCall ExprResult Result = 823b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 824b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.Owned(expr)); 825b934c2d77144471f35c5ebae9e925b056dac8112John McCall 826b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *ResultExpr = 0; 827b934c2d77144471f35c5ebae9e925b056dac8112John McCall 828b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Result.isInvalid()) 829b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; // types weren't compatible. 830b934c2d77144471f35c5ebae9e925b056dac8112John McCall else { 831b934c2d77144471f35c5ebae9e925b056dac8112John McCall ResultExpr = Result.takeAs<Expr>(); 832dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 833b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (ResultExpr != expr) { 834b934c2d77144471f35c5ebae9e925b056dac8112John McCall // The type was promoted, update initializer list. 835b934c2d77144471f35c5ebae9e925b056dac8112John McCall IList->setInit(Index, ResultExpr); 836b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 837b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 838b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (hadError) 839b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 840b934c2d77144471f35c5ebae9e925b056dac8112John McCall else 841b934c2d77144471f35c5ebae9e925b056dac8112John McCall UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 842b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 8430cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 8440cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 8458ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 8468ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 847930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 848930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 849930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 850930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (Index < IList->getNumInits()) { 851930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor Expr *expr = IList->getInit(Index); 852930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (isa<InitListExpr>(expr)) { 8530820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 854930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType << IList->getSourceRange(); 855930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 856930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 857930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 858930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 8591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 860930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 86160d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result = 862a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 863a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson SemaRef.Owned(expr)); 864a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 865a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson if (Result.isInvalid()) 866930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 867a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 868a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson expr = Result.takeAs<Expr>(); 869a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson IList->setInit(Index, expr); 870a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 871930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor if (hadError) 872930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 873930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor else 874930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 875930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 876930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else { 877390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 878390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 879390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 880390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 8811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getLocStart(), 882930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor diag::err_init_reference_member_uninitialized) 883930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << DeclType 884930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor << IList->getSourceRange(); 885930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 886930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 887930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 888930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 889930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 890930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 891930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 8928ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 89346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 8944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 8954c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 8964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 89720e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 89820e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 89920e047abc5f19dc948436c0fb891450d9cd40667John McCall 90020e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 90120e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned maxElements = VT->getNumElements(); 90220e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numEltsInit = 0; 90320e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType elementType = VT->getElementType(); 90420e047abc5f19dc948436c0fb891450d9cd40667John McCall 90520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!SemaRef.getLangOptions().OpenCL) { 90620e047abc5f19dc948436c0fb891450d9cd40667John McCall // If the initializing element is a vector, try to copy-initialize 90720e047abc5f19dc948436c0fb891450d9cd40667John McCall // instead of breaking it apart (which is doomed to failure anyway). 90820e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *Init = IList->getInit(Index); 90920e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!isa<InitListExpr>(Init) && Init->getType()->isVectorType()) { 91020e047abc5f19dc948436c0fb891450d9cd40667John McCall ExprResult Result = 91120e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.PerformCopyInitialization(Entity, Init->getLocStart(), 91220e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.Owned(Init)); 91320e047abc5f19dc948436c0fb891450d9cd40667John McCall 91420e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *ResultExpr = 0; 91520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Result.isInvalid()) 91620e047abc5f19dc948436c0fb891450d9cd40667John McCall hadError = true; // types weren't compatible. 91720e047abc5f19dc948436c0fb891450d9cd40667John McCall else { 91820e047abc5f19dc948436c0fb891450d9cd40667John McCall ResultExpr = Result.takeAs<Expr>(); 919dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 92020e047abc5f19dc948436c0fb891450d9cd40667John McCall if (ResultExpr != Init) { 92120e047abc5f19dc948436c0fb891450d9cd40667John McCall // The type was promoted, update initializer list. 92220e047abc5f19dc948436c0fb891450d9cd40667John McCall IList->setInit(Index, ResultExpr); 9232ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 9242ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 92520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (hadError) 92620e047abc5f19dc948436c0fb891450d9cd40667John McCall ++StructuredIndex; 92720e047abc5f19dc948436c0fb891450d9cd40667John McCall else 92820e047abc5f19dc948436c0fb891450d9cd40667John McCall UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 92920e047abc5f19dc948436c0fb891450d9cd40667John McCall ++Index; 93020e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 9310cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 9321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 93320e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 93420e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 935dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 93620e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 93720e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 93820e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 93920e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 940dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 94120e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 94220e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 94320e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 94420e047abc5f19dc948436c0fb891450d9cd40667John McCall } 94520e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 94620e047abc5f19dc948436c0fb891450d9cd40667John McCall } 94720e047abc5f19dc948436c0fb891450d9cd40667John McCall 94820e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 94920e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 950dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 95120e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL initializers allows vectors to be constructed from vectors. 95220e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i) { 95320e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 95420e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 95520e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 956dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 95720e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 95820e047abc5f19dc948436c0fb891450d9cd40667John McCall 95920e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType IType = IList->getInit(Index)->getType(); 96020e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!IType->isVectorType()) { 96120e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 96220e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 96320e047abc5f19dc948436c0fb891450d9cd40667John McCall ++numEltsInit; 96420e047abc5f19dc948436c0fb891450d9cd40667John McCall } else { 96520e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType VecType; 96620e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *IVT = IType->getAs<VectorType>(); 96720e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numIElts = IVT->getNumElements(); 968dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 96920e047abc5f19dc948436c0fb891450d9cd40667John McCall if (IType->isExtVectorType()) 97020e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); 97120e047abc5f19dc948436c0fb891450d9cd40667John McCall else 97220e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getVectorType(elementType, numIElts, 973e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson IVT->getVectorKind()); 97420e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, VecType, Index, 97520e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 97620e047abc5f19dc948436c0fb891450d9cd40667John McCall numEltsInit += numIElts; 97720e047abc5f19dc948436c0fb891450d9cd40667John McCall } 9780cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 97920e047abc5f19dc948436c0fb891450d9cd40667John McCall 98020e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL requires all elements to be initialized. 98120e047abc5f19dc948436c0fb891450d9cd40667John McCall if (numEltsInit != maxElements) 98220e047abc5f19dc948436c0fb891450d9cd40667John McCall if (SemaRef.getLangOptions().OpenCL) 98320e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.Diag(IList->getSourceRange().getBegin(), 98420e047abc5f19dc948436c0fb891450d9cd40667John McCall diag::err_vector_incorrect_num_initializers) 98520e047abc5f19dc948436c0fb891450d9cd40667John McCall << (numEltsInit < maxElements) << maxElements << numEltsInit; 9860cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 9870cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 9888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 989784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 99087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 9911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 9924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 9934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 995ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = SemaRef.Context.getAsArrayType(DeclType); 996ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 9970cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 9980cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 999ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (Expr *Str = IsStringInit(IList->getInit(Index), arrayType, 100079e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 1001fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckStringInit(Str, DeclType, arrayType, SemaRef); 10024c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 10034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 10044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 10054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 10064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 1007f71ae8d8024561f92dd7916363e7a791684563ccChris Lattner UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 10080820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 10090cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 10100cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 10110cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10120cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1013ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(arrayType)) { 1014638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 1015638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 1016638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 10170820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 1018dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner diag::err_variable_object_no_init) 1019dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << VAT->getSizeExpr()->getSourceRange(); 1020638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 10214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 10224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 1023638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 1024638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 1025638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 102605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 10274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 10284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 102905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 1030ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(arrayType)) { 103105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 10329f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extOrTrunc(maxElements.getBitWidth()); 1033e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 103405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 103505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 103605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1037ce6c9b7da219c8640a0559f75770cfc6622de083John McCall QualType elementType = arrayType->getElementType(); 103805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 103905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 104005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 104187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 104287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 104387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 104487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 104587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 104687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 104787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 104887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 10499a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 10504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 1051eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 1052eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 105305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 105487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 105587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 105687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 1057f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 10589f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad maxElements = maxElements.extend(elementIndex.getBitWidth()); 1059f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 10609f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extend(maxElements.getBitWidth()); 1061e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 1062f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 106387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 106487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 106587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 106687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 106705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 106805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 106905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 107005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 107105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 107205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 107305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 10740cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 107505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 10768ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 1077dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 10788ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 10798ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 10808ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 10818ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 108205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 108305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 108405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 108505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 108605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 108705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 10880cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1089587cbdfd95f4b0aaccc14b31f5debe85d5daf7edEli Friedman if (!hadError && DeclType->isIncompleteArrayType()) { 10900cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1091396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1092e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 109305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1094396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1095396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 10960820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1097396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 10980cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1099396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 11001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1101396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 11020cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 11030cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11040cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 11058ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 11062bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 11071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 110887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 11091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 11104c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 11114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1112eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1113eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 11146217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 11151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1116b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1117b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1118b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 1119b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1120b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 11211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 11223498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 11233498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 11243498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor // Value-initialize the first named member of the union. 11256217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 112617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 11273498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor Field != FieldEnd; ++Field) { 11283498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (Field->getDeclName()) { 11293498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 11303498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor break; 11313498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 11323498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 11333498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 11343498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 11353498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 113605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 113705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 113805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 113905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 11406217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 114117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1142dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 114380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 114405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 114505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 114605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 114705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 114887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 114987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 115087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 115187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 115287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 115387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 115487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 115587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 11569a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 11574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1158eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1159eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 116005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 116105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1162dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 116380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 116480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 116580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 116680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 116705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 116805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 116905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 117005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 117105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 117244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 117305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 117444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1175dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1176dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1177dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1178dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 117905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 118005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1181b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 118244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 11830bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 11844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 118505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1186b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 11870cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 118844b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 11898ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 11908ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 11918ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 11928ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1193dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 11940bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 11950bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (DeclType->isUnionType()) { 11960bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 11970bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 11980bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 119905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 120005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 12010cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 120244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 120380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 1204dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (InitializedSomething && CheckForMissingFields && Field != FieldEnd && 120580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall !Field->getType()->isIncompleteArrayType() && !DeclType->isUnionType()) { 120680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 120780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 120880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 120980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 121080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 121180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 121280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 121380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 121480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 121580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 121680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 121780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 12181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1219a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1220eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1221eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1222eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Handle GNU flexible array initializers. 12231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!TopLevelObject && 1224a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor (!isa<InitListExpr>(IList->getInit(Index)) || 1225a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor cast<InitListExpr>(IList->getInit(Index))->getNumInits() > 0)) { 12261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getInit(Index)->getSourceRange().getBegin(), 1227eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_nonempty) 1228eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << IList->getInit(Index)->getSourceRange().getBegin(); 12290820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1230eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1231eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1232a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1233a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1234a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor } else { 12351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(IList->getInit(Index)->getSourceRange().getBegin(), 1236a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor diag::ext_flexible_array_init) 1237a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor << IList->getInit(Index)->getSourceRange().getBegin(); 1238a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1239a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor << *Field; 1240eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1241eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 12428ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 12438ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1244dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 12458ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 1246dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 12478ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 12488ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 1249dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1250987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 12510cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 12520cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1253ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1254ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1255ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1256ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1257ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 12581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 12591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1260a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IndirectFieldDecl *IndirectField) { 1261ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1262ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1263ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 1264ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor llvm::SmallVector<Designator, 4> Replacements; 1265a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet for (IndirectFieldDecl::chain_iterator PI = IndirectField->chain_begin(), 1266a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet PE = IndirectField->chain_end(); PI != PE; ++PI) { 1267a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (PI + 1 == PE) 12681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1269ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1270ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1271ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1272ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1273ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1274a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(isa<FieldDecl>(*PI)); 1275a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Replacements.back().setField(cast<FieldDecl>(*PI)); 1276ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1277ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1278ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1279ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1280ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1281319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1282ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 1283a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet} 12841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1285dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Given an implicit anonymous field, search the IndirectField that 1286a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet/// corresponds to FieldName. 1287a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichetstatic IndirectFieldDecl *FindIndirectFieldDesignator(FieldDecl *AnonField, 1288a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IdentifierInfo *FieldName) { 1289a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(AnonField->isAnonymousStructOrUnion()); 1290a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Decl *NextDecl = AnonField->getNextDeclInContext(); 1291a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet while (IndirectFieldDecl *IF = dyn_cast<IndirectFieldDecl>(NextDecl)) { 1292a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (FieldName && FieldName == IF->getAnonField()->getIdentifier()) 1293a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return IF; 1294a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet NextDecl = NextDecl->getNextDeclInContext(); 1295ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1296a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return 0; 1297ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1298ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 129905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 130005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 130105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 130205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 130305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 130405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 13051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 13064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 130705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 130805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 130905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 131005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1311711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1312711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1313711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 131405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 131505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param DeclType The type of the "current object" (C99 6.7.8p17), 131605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 131705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 131887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 131987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 132087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 132105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 132287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 132387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 132487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 132505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 132605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 132705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 132805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 13294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 13304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 13314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 13324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 133305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 13341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 13358ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 13369a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 13371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 1338711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 133987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor QualType &CurrentObjectType, 134087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator *NextField, 134187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt *NextElementIndex, 13424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 13434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 134434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned &StructuredIndex, 1345eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1346eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1347711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 134887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 134987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 13506fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 13516fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 13526fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 13536fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 13546fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 13556fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 13566fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 13579a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 13584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 13596fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 13606fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 13616fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 13626fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 13636fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 13646fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 13656fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 136687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 136787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 136805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1369711997184366d584c9c437102cae1e9d9927b986Douglas Gregor bool IsFirstDesignator = (DesigIdx == 0); 13701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((IsFirstDesignator || StructuredList) && 13714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor "Need a non-designated initializer list to start from"); 13724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1373711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 13744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Determine the structural initializer list that corresponds to the 13754c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // current subobject. 13764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList = IsFirstDesignator? SyntacticToSemantic[IList] 13771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 1378ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor StructuredList, StructuredIndex, 13794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange(D->getStartLocation(), 13804c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DIE->getSourceRange().getEnd())); 13814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor assert(StructuredList && "Expected a structured initializer list"); 13824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 138387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 138487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 138587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 138687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 138787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 138887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 138987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 139087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 139187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 13921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 13936217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 139487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 139587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 139687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 139787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 13980820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 13990820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner << SemaRef.getLangOptions().CPlusPlus << CurrentObjectType; 140087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 140187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 140287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 140387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 14044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 14054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 14064c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1407ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 140887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 14094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 14101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 141117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 141217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 14134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 14144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 14154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 1416dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1417a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // If we find a field representing an anonymous field, look in the 1418a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // IndirectFieldDecl that follow for the designated initializer. 1419a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField && Field->isAnonymousStructOrUnion()) { 1420a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (IndirectFieldDecl *IF = 1421a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet FindIndirectFieldDesignator(*Field, FieldName)) { 1422a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, IF); 1423a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet D = DIE->getDesignator(DesigIdx); 1424a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet break; 1425a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1426a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1427022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (KnownField && KnownField == *Field) 1428022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor break; 1429022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (FieldName && FieldName == Field->getIdentifier()) 14304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 14314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 14324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 143387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 143487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 14354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1436ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1437ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1438ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1439ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 14401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 144117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1442c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 14434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1444c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1445c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1446dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi LookupResult R(SemaRef, FieldName, D->getFieldLoc(), 1447c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Sema::LookupMemberName); 1448aaf87162c5fbfbf320072da3a8e83392e1bbf041Douglas Gregor if (SemaRef.CorrectTypo(R, /*Scope=*/0, /*SS=*/0, RT->getDecl(), false, 1449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Sema::CTC_NoKeywords) && 1450c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor (ReplacementField = R.getAsSingle<FieldDecl>()) && 14517a126a474fdde06382b315b4e3d8ef0a21d4dc31Sebastian Redl ReplacementField->getDeclContext()->getRedeclContext() 1452c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ->Equals(RT->getDecl())) { 1453dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(D->getFieldLoc(), 1454c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1455c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType << R.getLookupName() 1456849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), 1457849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor R.getLookupName().getAsString()); 1458dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(ReplacementField->getLocation(), 145967dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor diag::note_previous_decl) 146067dd1d4df1b28973e12e0981129b2517d2033b66Douglas Gregor << ReplacementField->getDeclName(); 1461c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1462c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1463c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1464c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1465c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1466c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1467c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1468dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1469c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 14704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 14710820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 14724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 14731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 14744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1475ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1476ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1477ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1478c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1479a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField) { 1480c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1481c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1482c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1483c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1484c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1485c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1486c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1487c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1488dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (ReplacementField == *Field || 1489c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1490c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1491c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1492c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1493c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1494c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 149587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 14964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 14974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 14984c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 14990bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 15004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 15010bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 15020bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 15034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 150487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Update the designator with the field declaration. 15054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor D->setField(*Field); 15061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 15084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this field. 15094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (FieldIndex >= StructuredList->getNumInits()) 15100820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 15114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1512eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1513eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1514eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1515711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1516eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1517eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 15181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr::Designator *NextD 1519711997184366d584c9c437102cae1e9d9927b986Douglas Gregor = DIE->getDesignator(DesigIdx + 1); 15201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(NextD->getStartLocation(), 1521eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_designator_into_flexible_array_member) 15221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << SourceRange(NextD->getStartLocation(), 1523eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor DIE->getSourceRange().getEnd()); 15240820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1525eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1526eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1527eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1528eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 15299046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner if (!hadError && !isa<InitListExpr>(DIE->getInit()) && 15309046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner !isa<StringLiteral>(DIE->getInit())) { 1531eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 15320820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(DIE->getInit()->getSourceRange().getBegin(), 1533eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_needs_braces) 1534eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << DIE->getInit()->getSourceRange(); 15350820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1536eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1537eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1538eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1539eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1540eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Handle GNU flexible array initializers. 15411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Invalid && !TopLevelObject && 1542eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor cast<InitListExpr>(DIE->getInit())->getNumInits() > 0) { 15431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(DIE->getSourceRange().getBegin(), 1544eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor diag::err_flexible_array_init_nonempty) 1545eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << DIE->getSourceRange().getBegin(); 15460820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 1547eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << *Field; 1548eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1549eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1550eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1551eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1552eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1553eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1554eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1555eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1556eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1557eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1558eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1559eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1560eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 15618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 15628ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 15638ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 15648ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1565eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 15668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1567eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1568eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1569eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1570eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1571eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1572eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1573eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1574eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1575eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1576eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1577eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1578eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType FieldType = (*Field)->getType(); 1579eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1580dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 15819a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 15828ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1583dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 1584dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FieldType, 0, 0, Index, 15859a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1586eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1587eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1588eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 158987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 159087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 159187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 159287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 15934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 159405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 159587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 159687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 159787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 159887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 159987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 16004c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 160187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 160287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 160305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 160434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 160534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 160634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1607ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1608ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1609ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1610ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 161187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 161287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 1613dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 16148ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 16154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 161687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 161787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 161805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 161987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 162087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 162187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 162287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 162387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 162487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 162587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 162687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 162787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 162887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 162987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 163087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 163187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 163287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 163387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 16340820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 163587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 16360820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 163787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor << CurrentObjectType; 163887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 163987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 164087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 164105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 164287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 164334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 164434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 164587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 16463bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedStartIndex = IndexExpr->EvaluateAsInt(SemaRef.Context); 164734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 164834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 164987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 16503bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 16511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 16523bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DIE->getArrayRangeStart(*D)->EvaluateAsInt(SemaRef.Context); 16531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 16543bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DIE->getArrayRangeEnd(*D)->EvaluateAsInt(SemaRef.Context); 165587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 165634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1657e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // Codegen can't handle evaluating array range designators that have side 1658e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // effects, because we replicate the AST value for each initialized element. 1659e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // As such, set the sawArrayRangeDesignator() bit if we initialize multiple 1660e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // elements with something that has a side effect, so codegen can emit an 1661e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // "error unsupported" error instead of miscompiling the app. 1662e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner if (DesignatedStartIndex.getZExtValue()!=DesignatedEndIndex.getZExtValue()&& 1663e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner DIE->getInit()->HasSideEffects(SemaRef.Context)) 1664a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 166587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 166605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 166787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 166887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 16699f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 16709f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 167134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 16729f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 16739f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 167434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 167534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 16760820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IndexExpr->getSourceRange().getBegin(), 167787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor diag::err_array_designator_too_large) 167834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 167987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor << IndexExpr->getSourceRange(); 168087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 168187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 168205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 168334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 168434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 168534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 16869f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 16879f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 16883bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 16893bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 16909f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 16919f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 169234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 169334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 169405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 16951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16964c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 16974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 169834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 16991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 170034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 170134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 170234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 170334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 170434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 170534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 170634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 170734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 1708dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 17099a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 17108ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 17119a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 171234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 171334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 171434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 171534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 1716dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 17179a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 1718dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 1719dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementType, 0, 0, Index, 17209a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 1721eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 1722eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 172334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 172487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 172534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 172634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 172734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 172834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 172987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 173087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 173187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 173287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 173387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 173434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 17354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 173687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 173787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 17381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 173934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 174034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 174134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 174287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 174305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 1744dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 1745784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 17464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 17471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 174805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 174905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 17504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 17514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 17524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 17534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 17544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 17554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 17564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 17574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 17584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 17594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 17604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = SyntacticToSemantic[IList]; 17614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 17624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 17631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 17654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 17664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 17684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 17694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 17704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 17714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 17721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 17734c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 17744c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 17751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 17764c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 17774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 17784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 17791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 1780ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 17814c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 17821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(ExistingInit->getSourceRange().getBegin(), 17834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 178454f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 17854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 17864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 17874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 1789709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 1790709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitRange.getBegin(), 0, 0, 1791ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 1792ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 17936398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor Result->setType(CurrentObjectType.getNonLValueExprType(SemaRef.Context)); 17944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1795fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 1796fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 179708457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 1798f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis bool GotNumInits = false; 1799f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (!StructuredList) { 180008457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 1801f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 1802f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } else if (Index < IList->getNumInits()) { 1803f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) { 180408457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 1805f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 1806f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } 180708457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 180808457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 18091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 1810fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 1811fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 1812fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 1813fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 1814fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 1815f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (GotNumInits && NumElements > NumInits) 1816fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 1817fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 1818183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 1819fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 18206217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 1821fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 1822fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 1823fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 1824fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 182617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 1827fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 1828fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 182908457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor if (NumElements < NumInits) 1830fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = IList->getNumInits(); 1831fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 1832709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 1833fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 18344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 18354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 18364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 1837709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 18384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 18394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 18404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 18414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 18424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 18434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 18444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 18454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 18464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 18474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 18484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 18494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 18504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 18514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 18524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 18534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 18544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1855709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 1856709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 18574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 18581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(expr->getSourceRange().getBegin(), 18594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 18604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(PrevInit->getSourceRange().getBegin(), 18624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 186354f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 18644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 18654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 18661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 18684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 18694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 187005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 187105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// value. This is essentailly just a wrapper around 18723bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 187305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 187405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// failure. Returns true if there was an error, false otherwise. If 187505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// everything went okay, Value will receive the value of the constant 187605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// expression. 18771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic bool 18783bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 187905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation Loc = Index->getSourceRange().getBegin(); 188005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 18823bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (S.VerifyIntegerConstantExpression(Index, &Value)) 18833bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return true; 18843bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 18853bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 18863bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 188705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 188805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188953d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 189005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return false; 189105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 189205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189360d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 18947663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky SourceLocation Loc, 18957663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky bool GNUSyntax, 18967663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky ExprResult Init) { 189705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 189805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 190005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::SmallVector<ASTDesignator, 32> Designators; 190105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::SmallVector<Expr *, 32> InitExpressions; 190205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 190305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 190405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 190505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 190605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 190705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 19081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 190905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 191005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 191105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 191205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 191305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 191405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 19159ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (!Index->isTypeDependent() && 19169ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor !Index->isValueDependent() && 19179ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, Index, IndexValue)) 191805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 191905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 192005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 19211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 192205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 192305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 192405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 192505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 192605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 192705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 192805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 192905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 193005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 193105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 193205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 19339ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 19349ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 19359ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 19369ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 19379ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if ((!StartDependent && 19389ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, StartIndex, StartValue)) || 19399ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor (!EndDependent && 19409ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, EndIndex, EndValue))) 194105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 1942d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 1943d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 19449ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 19459ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 19469ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 19479f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad EndValue = EndValue.extend(StartValue.getBitWidth()); 1948d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 19499f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad StartValue = StartValue.extend(EndValue.getBitWidth()); 1950d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 1951c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 1952d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 19531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 1954d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 1955d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 1956d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 1957d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 19581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 1959d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 1960d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 1961d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 1962d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 1963d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 196405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 196605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 197005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 197105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 197205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 197305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 197405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 197505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 197605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 1977beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 1978beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 1979beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad InitExpressions.data(), InitExpressions.size(), 1980e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson Loc, GNUSyntax, Init.takeAs<Expr>()); 1981dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19822d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor if (getLangOptions().CPlusPlus) 1983a47317bbeef839ef86323e3feacd9962ca9c383aEli Friedman Diag(DIE->getLocStart(), diag::ext_designated_init_cxx) 1984a47317bbeef839ef86323e3feacd9962ca9c383aEli Friedman << DIE->getSourceRange(); 1985a47317bbeef839ef86323e3feacd9962ca9c383aEli Friedman else if (!getLangOptions().C99) 19862d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor Diag(DIE->getLocStart(), diag::ext_designated_init) 19872d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor << DIE->getSourceRange(); 1988dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 198905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 199005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 1991c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 1992cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregorbool Sema::CheckInitList(const InitializedEntity &Entity, 1993cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *&InitList, QualType &DeclType) { 1994cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker CheckInitList(*this, Entity, InitList, DeclType); 1995c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor if (!CheckInitList.HadError()) 1996c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitList = CheckInitList.getFullyStructuredList(); 1997c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 1998c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor return CheckInitList.HadError(); 1999c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor} 200087fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 2001cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 2002cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 2003cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 200439da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 2005dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 2006cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 2007dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi : Parent(&Parent), Index(Index) 2008cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 2009d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 2010d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 2011d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 2012d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } else { 2013d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 2014d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = Parent.getType()->getAs<VectorType>()->getElementType(); 2015d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 201620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 201720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2018dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 2019711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 2020711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 202120093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 202220093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 202320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 2024711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 2025711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 2026711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 2027dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2028d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 202920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 203020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 203120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 203299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 203399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 203499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Parameter: 2035a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor if (!VariableOrMember) 2036a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor return DeclarationName(); 2037a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor // Fall through 2038a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 2039a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 204099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 204199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 204299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 204399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 204499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 204518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 204699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 204799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 2048059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2049d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2050d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 2051310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 205299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 205399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 2054dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 205599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Silence GCC warning 205699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 205799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 205899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 20597abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 20607abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 20617abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 20627abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Parameter: 20637abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 20647abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 20657abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 20667abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 20677abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 20687abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 20697abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 20707abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 2071059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2072d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2073d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 2074310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 20757abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 20767abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 2077dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 20787abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor // Silence GCC warning 20797abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 20807abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 20817abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 20823c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregorbool InitializedEntity::allowsNRVO() const { 20833c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor switch (getKind()) { 20843c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Result: 20853c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Exception: 20863c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return LocAndNRVO.NRVO; 2087dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 20883c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Variable: 20893c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Parameter: 20903c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Member: 20913c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_New: 20923c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Temporary: 20933c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Base: 2094059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 20953c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_ArrayElement: 20963c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_VectorElement: 2097310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 20983c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor break; 20993c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor } 21003c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 21013c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return false; 21023c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor} 21033c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 210420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 210520093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 210620093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 210720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 210820093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 210920093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 211020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 211120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 2112906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 211320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 211420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 211520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 2116523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 211720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 211820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 2119906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 212020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 2121d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 212251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 212371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 212418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2125cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 2126569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 2127cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 212820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 2129dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 213020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 213120093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 213220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 213320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 213420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2135b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 2136b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return getKind() == ReferenceBinding && Steps.back().Kind == SK_BindReference; 2137b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2138b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2139b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2140b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor if (getKind() != FailedSequence) 2141b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2142dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2143b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2144b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2145b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2146b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2147b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2148b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2149b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2150b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2151b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2152b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2153b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2154429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 2155b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2156b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2157b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2158b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 215972a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 2160cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 2161cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 2162b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2163dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2164b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2165b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2166b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2167b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2168b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2169dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2170b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2171b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2172b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2173d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2174d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2175d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2176d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 217720093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddAddressOverloadResolutionStep( 21786bb8017bb9e828d118e15e59d71c66bba323c364John McCall FunctionDecl *Function, 21796bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found) { 218020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 218120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 218220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 21839aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 21846bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 218520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 218620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 218720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2188dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 21895baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 219020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 21915baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 21925baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: S.Kind = SK_CastDerivedToBaseRValue; break; 21935baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break; 21945baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break; 2195906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl default: llvm_unreachable("No such category"); 2196906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 219720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 219820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 219920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 220020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2201dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddReferenceBindingStep(QualType T, 220220093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 220320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 220420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 220520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 220620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 220720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 220820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2209523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2210523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2211523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2212523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2213523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2214523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2215523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 221603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedmanvoid InitializationSequence::AddUserConversionStep(FunctionDecl *Function, 22179aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl, 221803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman QualType T) { 221920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 222020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 222103981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 22229aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 22239aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 222420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 222520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 222620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 222720093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 22285baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 222920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 223038a4ffe5244e6be46f1b1f8394342a77836be776John McCall S.Kind = SK_QualificationConversionRValue; // work around a gcc warning 22315baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 22325baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: 2233906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionRValue; 2234906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 22355baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: 2236906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionXValue; 2237906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 22385baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: 2239906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionLValue; 2240906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2241906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 224220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 224320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 224420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 224520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 224620093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 224720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 224820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 224920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 225020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 225120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 225220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 225320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 225420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 225520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2256d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2257d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2258d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2259d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2260d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2261d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2262d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2263dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 226451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas GregorInitializationSequence::AddConstructorInitializationStep( 226551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor, 2266b13b737a2450167c82e148590e8019b839ce6b98John McCall AccessSpecifier Access, 226751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor QualType T) { 226851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 226951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Kind = SK_ConstructorInitialization; 227051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 22719aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 22729aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 227351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 227451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 227551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 227671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 227771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 227871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 227971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 228071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 228171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 228271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 228318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 228418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 228518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 228618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 228718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 228818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 228918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2290cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2291cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2292cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2293cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2294cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2295cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2296cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2297569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregorvoid InitializationSequence::AddObjCObjectConversionStep(QualType T) { 2298569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Step S; 2299569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Kind = SK_ObjCObjectConversion; 2300569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Type = T; 2301569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Steps.push_back(S); 2302569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor} 2303569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 2304cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorvoid InitializationSequence::AddArrayInitStep(QualType T) { 2305cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Step S; 2306cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Kind = SK_ArrayInit; 2307cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Type = T; 2308cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Steps.push_back(S); 2309cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 2310cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 2311dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 231220093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 231320093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = FailedSequence; 231420093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 231520093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 231620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 231720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 231820093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 231920093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 232020093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 232120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2322dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Attempt list initialization (C++0x [dcl.init.list]) 2323dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryListInitialization(Sema &S, 232420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 232520093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 232620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitListExpr *InitList, 232720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2328d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We only perform rudimentary checking of list 2329d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // initializations at this point, then assume that any list 2330d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // initialization of an array, aggregate, or scalar will be 233136c28db83d2141ca4e74c4d2e92be5a3a772e2c3Sebastian Redl // well-formed. When we actually "perform" list initialization, we'll 2332d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // do all of the necessary checking. C++0x initializer lists will 2333d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // force us to perform more checking here. 2334d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ListInitialization); 2335d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2336d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 2337d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2338d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // C++ [dcl.init]p13: 2339dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // If T is a scalar type, then a declaration of the form 2340d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2341d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // T x = { a }; 2342d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2343d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // is equivalent to 2344d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // 2345d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // T x = a; 2346d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (DestType->isScalarType()) { 2347d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (InitList->getNumInits() > 1 && S.getLangOptions().CPlusPlus) { 2348d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 2349d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 2350d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 2351d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2352d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume scalar initialization from a single value works. 2353d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isAggregateType()) { 2354d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume aggregate initialization works. 2355d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isVectorType()) { 2356d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Assume vector initialization works. 2357d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isReferenceType()) { 2358d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: C++0x defines behavior for this. 2359d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 2360d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 2361d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } else if (DestType->isRecordType()) { 2362d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: C++0x defines behavior for this 2363d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_InitListBadDestinationType); 2364d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 2365d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2366d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Add a general "list initialization" step. 2367d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Sequence.AddListInitializationStep(DestType); 236820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 236920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 237020093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 237120093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 237220093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 237320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 237420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 237520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 237620093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowRValues, 237720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2378d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 237920093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 238020093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 238120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 238220093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 238320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 238420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 2385569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion; 2386dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 2387569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T1, T2, DerivedToBase, 2388569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor ObjCConversion) && 238920093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 239060cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 2391569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor (void)ObjCConversion; 239220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 239320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 239420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 239520093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 239620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 239720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 239820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 239920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 240020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 2401dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 240220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 24036b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && 24046b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T1, 0)) { 240520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 240620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 240720093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 2408572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall 240920093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 2410e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(T1RecordDecl); 241120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 24129aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 24139aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 24149aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 241520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 241620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 24179aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 241820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 241920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 242020093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 242120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 24229aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 2423dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 242420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 242520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 242620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 24279aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 242886820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 2429b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis &Initializer, 1, CandidateSet, 2430b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 243120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 24329aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 2433b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis &Initializer, 1, CandidateSet, 2434b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 243520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2436dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 243720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2438572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) 2439572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 2440dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 24416b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor const RecordType *T2RecordType = 0; 24426b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if ((T2RecordType = T2->getAs<RecordType>()) && 24436b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T2, 0)) { 244420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 244520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 244620093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 244720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2448eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 244920093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 2450eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 2451eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 245220093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 245320093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 245420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 245520093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 2456dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 245720093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 245820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 245920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 246020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 246120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 24624680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Conv = cast<CXXConversionDecl>(D); 2463dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 246420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 246520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 246620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 2467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Do we need to make sure that we only consider conversion 2468dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // candidates with reference-compatible results? That might be needed to 246920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 247020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if ((AllowExplicit || !Conv->isExplicit()) && 247120093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 247220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 24739aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 247486820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 2475564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor DestType, CandidateSet); 247620093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 24779aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 2478564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor Initializer, DestType, CandidateSet); 247920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 248020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 248120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2482572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) 2483572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 2484dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 248520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 248620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2487dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 248820093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 2489dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (OverloadingResult Result 24908fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) 249120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 249203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 249320093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 249403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 249525ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // This is the overload that will actually be used for the initialization, so 249625ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // mark it as used. 249725ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth S.MarkDeclarationReferenced(DeclLoc, Function); 249825ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 249903981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 250020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 250120093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 250220093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 250320093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 250403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 250503981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 25069aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 25076398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context)); 250803981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 2509dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Determine whether we need to perform derived-to-base or 251003981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 25115baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = VK_RValue; 2512906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl if (T2->isLValueReferenceType()) 25135baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = VK_LValue; 2514906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl else if (const RValueReferenceType *RRef = T2->getAs<RValueReferenceType>()) 25155baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = RRef->getPointeeType()->isFunctionType() ? VK_LValue : VK_XValue; 2516906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 251720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 2518569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool NewObjCConversion = false; 251920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 2520dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi = S.CompareReferenceRelationship(DeclLoc, T1, 25216398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context), 2522569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor NewDerivedToBase, NewObjCConversion); 2523a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 2524a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 2525a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 2526a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 2527a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 2528a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 2529a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 2530a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 2531a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 2532a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 2533a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 253420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 253520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 2536dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi T2.getNonReferenceType().getQualifiers()), 25375baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK); 2538569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (NewObjCConversion) 2539569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 2540569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, 2541569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T2.getNonReferenceType().getQualifiers())); 2542569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 254320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 25445baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK); 2545dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 254620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 254720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 254820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 2549dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2550dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Attempt reference initialization (C++0x [dcl.init.ref]) 2551dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryReferenceInitialization(Sema &S, 255220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 255320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 255420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 255520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 255620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ReferenceBinding); 25574680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 2558d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 255920093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 25605535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 25615535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 256220093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 25635535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 25645535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 256520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 25664680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 256720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 256820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 256920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 257020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) { 25716bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 2572dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (FunctionDecl *Fn = S.ResolveAddressOfOverloadedFunction(Initializer, 25733afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor T1, 25743afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor false, 25753afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Found)) { 25763afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.AddAddressOverloadResolutionStep(Fn, Found); 25773afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor cv2T2 = Fn->getType(); 25783afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor T2 = cv2T2.getUnqualifiedType(); 25793afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor } else if (!T1->isRecordType()) { 258020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 258120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 258220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 258320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 25844680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 258520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 258620093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 258720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 258820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 2589569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion = false; 25904680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Expr::Classification InitCategory = Initializer->Classify(S.Context); 259120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 2592569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase, 2593569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor ObjCConversion); 25944680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 259520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 2596dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // A reference to type "cv1 T1" is initialized by an expression of type 259720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 259820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 2599dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the reference is an lvalue reference and the initializer 260020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 26014680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // Note the analogous bullet points for rvlaue refs to functions. Because 26024680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // there are no function rvalues in C++, rvalue refs to functions are treated 26034680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // like lvalue refs. 260420093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 26054680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl bool T1Function = T1->isFunctionType(); 26064680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (isLValueRef || T1Function) { 2607dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (InitCategory.isLValue() && 260814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 2609dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 261014d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related))) { 2611dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - is an lvalue (but is not a bit-field), and "cv1 T1" is 261220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 261320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 2614dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 261520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 2616de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 2617de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 2618de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 261920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 262020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 2621dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Context.getQualifiedType(T1, T2Quals), 26225baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue); 2623569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 2624569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 2625569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 2626569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 26275535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 26285baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK_LValue); 2629de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 2630093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 2631de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 263220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 263320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2634dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2635dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 2636dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 2637dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 2638dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // with "cv3 T3" (this conversion is selected by enumerating the 263920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 264020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 26414680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // If we have an rvalue ref to function type here, the rhs must be 26424680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // an rvalue. 26434680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && 26444680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isLValueRef || InitCategory.isRValue())) { 2645dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 264620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 26474680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl /*AllowRValues=*/isRValueRef, 264820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 264920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 265020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 26511d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 26521d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 26531d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 26541d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 26551d31833450e6d2947a33cb0840d87661d92eec07John McCall } 265620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 265720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 26584680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 2659dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, the reference shall be an lvalue reference to a 266020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 266169d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // shall be an rvalue reference. 2662b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor if (isLValueRef && !(T1Quals.hasConst() && !T1Quals.hasVolatile())) { 26633afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 26643afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 26653afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 266620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 266720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 266820093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 2669b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor else 26704680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Sequence.SetFailed(InitCategory.isLValue() 267120093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 267220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 267320093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 267420093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 26754680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 267620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 267720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 26784680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 2679c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - If the initializer expression 2680c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - is an xvalue, class prvalue, array prvalue, or function lvalue and 2681c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // "cv1 T1" is reference-compatible with "cv2 T2" 2682c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // Note: functions are handled below. 2683c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (!T1Function && 268414d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 2685dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 268614d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related)) && 2687c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isXValue() || 2688c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isRecordType()) || 2689c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isArrayType()))) { 2690c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ExprValueKind ValueKind = InitCategory.isXValue()? VK_XValue : VK_RValue; 2691c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (InitCategory.isPRValue() && T2->isRecordType()) { 2692523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 2693523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 2694523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 2695523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 2696523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 2697523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 2698523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 2699523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 2700523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 2701f57258bb96799957085080027a9c9eefe36c3417Francois Pichet if (!S.getLangOptions().CPlusPlus0x && !S.getLangOptions().Microsoft) 2702523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 270320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2704dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2705c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (DerivedToBase) 2706c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddDerivedToBaseCastStep(S.Context.getQualifiedType(T1, T2Quals), 2707c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ValueKind); 2708c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor else if (ObjCConversion) 2709c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddObjCObjectConversionStep( 2710c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 2711dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2712c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T1Quals != T2Quals) 2713c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddQualificationConversionStep(cv1T1, ValueKind); 2714dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Sequence.AddReferenceBindingStep(cv1T1, 2715c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor /*bindingTemporary=*/(InitCategory.isPRValue() && !T2->isArrayType())); 2716dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return; 2717c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor } 2718dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2719dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 2720dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 2721c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // xvalue, class prvalue, or function lvalue of type "cv3 T3", 2722c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // where "cv1 T1" is reference-compatible with "cv3 T3", 2723c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T2->isRecordType()) { 272420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 272520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 272620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 272720093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 272820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 272920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 273020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 273120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 273220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 2733dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 273420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 273520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 2736dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 273720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 273820093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 273920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 27400099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi 27410099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // - Otherwise, a temporary of type "cv1 T1" is created and initialized 274220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 2743dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy initialization (8.5). The reference is then bound to the 274420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 2745369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 274620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 274720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 274820093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct); 2749369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 2750369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 2751369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 2752369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall if (S.TryImplicitConversion(Sequence, TempEntity, Initializer, 2753369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ false, 2754369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicit, 275514d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*FIXME:InOverloadResolution=*/false, 275614d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*CStyle=*/Kind.isCStyleOrFunctionalCast())) { 275720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 275820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 275920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 276020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 276118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 276218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 276318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 276418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 27653afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 27663afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 276718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 276818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 276920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 277020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 277120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 277220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 277320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 277420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 27755535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 27765535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 2777dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship == Sema::Ref_Related && 27785535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 277920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 278020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 278120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 278220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2783dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // [...] If T1 is reference-related to T2 and the reference is an rvalue 2784b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor // reference, the initializer expression shall not be an lvalue. 2785dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship >= Sema::Ref_Related && !isLValueRef && 2786b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitCategory.isLValue()) { 2787b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor Sequence.SetFailed( 2788b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 2789b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor return; 2790b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor } 2791dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 279220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 279320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 279420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 279520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 279620093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 2797dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// (C++ [dcl.init.string], C99 6.7.8). 2798dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryStringLiteralInitialization(Sema &S, 279920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 280020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 280120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 280220093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 2803cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Sequence.setSequenceKind(InitializationSequence::StringInit); 2804d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 280520093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 280620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 280720093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 280820093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// enumerates the constructors of the initialized entity and performs overload 280920093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// resolution to select the best. 2810dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryConstructorInitialization(Sema &S, 281120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 281220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 281320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs, 281471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor QualType DestType, 281520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 28162f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ConstructorInitialization); 2817dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 281851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Build the candidate set directly in the initialization sequence 281951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // structure, so that it will persist if we fail. 282051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 282151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CandidateSet.clear(); 2822dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 282351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 282451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // explicit conversion operators. 282551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct || 282651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Kind.getKind() == InitializationKind::IK_Value || 28272f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Kind.getKind() == InitializationKind::IK_Default); 2828087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor 2829087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // The type we're constructing needs to be complete. 2830087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 283172a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_Incomplete); 2832087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor return; 2833087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 2834dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 283551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 283651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // to see if one is suitable. 283751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor const RecordType *DestRecordType = DestType->getAs<RecordType>(); 2838dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi assert(DestRecordType && "Constructor initialization requires record type"); 283951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXRecordDecl *DestRecordDecl 284051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 2841dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 284251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 2843e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 284451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Con != ConEnd; ++Con) { 28459aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 28469aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 2847d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor bool SuppressUserConversions = false; 2848dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 284951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Find the constructor (which may be a template). 285051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor = 0; 28519aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 285251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (ConstructorTmpl) 285351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 285451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 2855d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor else { 28569aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 2857d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor 2858dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // If we're performing copy initialization using a copy constructor, we 2859d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // suppress user-defined conversions on the arguments. 2860d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor // FIXME: Move constructors? 2861d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Copy && 2862d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Constructor->isCopyConstructor()) 2863d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions = true; 2864d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor } 2865dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 286651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (!Constructor->isInvalidDecl() && 286799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (AllowExplicit || !Constructor->isExplicit())) { 286851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (ConstructorTmpl) 28699aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 287086820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 2871d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Args, NumArgs, CandidateSet, 2872d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 287351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor else 28749aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 2875d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor Args, NumArgs, CandidateSet, 2876d1a272204cef9304df3930d94f66713b05db27d6Douglas Gregor SuppressUserConversions); 287751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 2878dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 2879dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 288051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceLocation DeclLoc = Kind.getLocation(); 2881dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2882dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 288351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 2884dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (OverloadingResult Result 2885120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall = CandidateSet.BestViableFunction(S, DeclLoc, Best)) { 288651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Sequence.SetOverloadFailure( 2887dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializationSequence::FK_ConstructorOverloadFailed, 288851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Result); 288951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor return; 289051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 28919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 28929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // C++0x [dcl.init]p6: 28939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // If a program calls for the default initialization of an object 28949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // of a const-qualified type T, T shall be a class type with a 28959db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // user-provided default constructor. 28969db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 28979db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getType().isConstQualified() && 28989db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor cast<CXXConstructorDecl>(Best->Function)->isImplicit()) { 28999db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 29009db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor return; 29019db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 29029db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 290351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Add the constructor initialization step. Any cv-qualification conversion is 290451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // subsumed by the initialization. 29052f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Sequence.AddConstructorInitializationStep( 2906dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi cast<CXXConstructorDecl>(Best->Function), 29079aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Best->FoundDecl.getAccess(), 290818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DestType); 290920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 291020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 291171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 2912dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryValueInitialization(Sema &S, 291371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 291471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 291571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor InitializationSequence &Sequence) { 291671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // C++ [dcl.init]p5: 291771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 291871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 2919d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 2920dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 292171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 292271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor while (const ArrayType *AT = S.Context.getAsArrayType(T)) 292371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor T = AT->getElementType(); 2924dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 292571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 292671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 292771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is a class type (clause 9) with a user-declared 292871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // constructor (12.1), then the default constructor for T is 292971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // called (and the initialization is ill-formed if T has no 293071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // accessible default constructor); 293171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 293271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // FIXME: we really want to refer to a single subobject of the array, 293371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // but Entity doesn't have a way to capture that (yet). 293471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (ClassDecl->hasUserDeclaredConstructor()) 293571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 2936dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 293716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // -- if T is a (possibly cv-qualified) non-union class type 293816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // without a user-provided constructor, then the object is 29390099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // zero-initialized and, if T's implicitly-declared default 294016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // constructor is non-trivial, that constructor is called. 2941465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if ((ClassDecl->getTagKind() == TTK_Class || 2942ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor ClassDecl->getTagKind() == TTK_Struct)) { 2943d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 2944dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 294516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 294671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 294771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 294871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 2949d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 295071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Sequence.setSequenceKind(InitializationSequence::ZeroInitialization); 295171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 295271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 295399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 295499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 295599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 295699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 295799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 295899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 2959dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 296099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 296199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 296299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 2963d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 296499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor while (const ArrayType *Array = S.Context.getAsArrayType(DestType)) 296599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor DestType = Array->getElementType(); 2966dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 296799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 296899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 296999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 297060c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType->isRecordType() && S.getLangOptions().CPlusPlus) { 29714e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, Sequence); 29724e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth return; 297399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 2974dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 297599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 297699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.setSequenceKind(InitializationSequence::NoInitialization); 2977dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 297899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 2979dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // a const-qualified type T, T shall be a class type with a user-provided 298099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 298160c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType.isConstQualified() && S.getLangOptions().CPlusPlus) 298299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 298399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 298499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 298520093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 298620093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 298720093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 2988dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryUserDefinedConversion(Sema &S, 298920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 299020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 299120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 299220093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 29934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.setSequenceKind(InitializationSequence::UserDefinedConversion); 2994dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2995d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 29964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 29974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 29984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 29994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 3000dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 30014a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 30024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 30034a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 30044a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 3005dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 30064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 30074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 30084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 3009dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 30104a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 30114a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 30124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 30134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 30144a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 3015dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3016087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Try to complete the type we're converting to. 3017dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (!S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 3018087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3019e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 3020087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Con != ConEnd; ++Con) { 3021087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor NamedDecl *D = *Con; 3022087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 3023dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3024087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Find the constructor (which may be a template). 3025087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor CXXConstructorDecl *Constructor = 0; 3026087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor FunctionTemplateDecl *ConstructorTmpl 3027087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor = dyn_cast<FunctionTemplateDecl>(D); 30284a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 3029087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>( 3030087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 30314712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor else 3032087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>(D); 3033dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3034087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!Constructor->isInvalidDecl() && 3035087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 3036087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (ConstructorTmpl) 3037087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 3038087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor /*ExplicitArgs*/ 0, 3039087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor &Initializer, 1, CandidateSet, 30404712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3041087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor else 3042087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 3043087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor &Initializer, 1, CandidateSet, 30444712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3045087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 3046dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 3047087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 30484a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3049cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3050cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 3051cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 30524a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 30534a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 30544a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 3055cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 305633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 305733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 305833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 305933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 306033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 3061dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3062eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 306333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 3064eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3065dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi E = Conversions->end(); 306633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 306733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 306833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 306933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 307033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3071dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 307233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 307333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 30744a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 307533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 30764a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 307732daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 3078dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 307933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 308033c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 30819aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 308286820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 308333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 308433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 30859aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 308686820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 308733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 30884a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 30894a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 30904a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3091dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3092dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 30934a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 30941d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 30958fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) { 30964a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 3097dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializationSequence::FK_UserConversionOverloadFailed, 30984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 30994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 31004a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 31011d31833450e6d2947a33cb0840d87661d92eec07John McCall 31024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 310325ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth S.MarkDeclarationReferenced(DeclLoc, Function); 3104dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 31054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 31064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 31074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // subsumed by the initialization. 31089aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType); 31094a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 31104a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 31114a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 31124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 31135291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor QualType ConvType = Function->getCallResultType(); 31143fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 31153fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If we're converting to a class type, there may be an copy if 31163fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 31173fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 31183fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 31193fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 31203fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 31213fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType); 31223fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 31233fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 31244a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 31253fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType); 3126dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 31273fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 31283fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 31294a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 31304a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 31314a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 31321d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 31334a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 31344a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 31354a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 313620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 313720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3138cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// \brief Determine whether we have compatible array types for the 3139cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// purposes of GNU by-copy array initialization. 3140cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorstatic bool hasCompatibleArrayTypes(ASTContext &Context, 3141cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Dest, 3142cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Source) { 3143cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the source and destination array types are equivalent, we're 3144cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // done. 3145cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Context.hasSameType(QualType(Dest, 0), QualType(Source, 0))) 3146cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return true; 3147cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3148cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Make sure that the element types are the same. 3149cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!Context.hasSameType(Dest->getElementType(), Source->getElementType())) 3150cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return false; 3151cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3152cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // The only mismatch we allow is when the destination is an 3153cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // incomplete array type and the source is a constant array type. 3154cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return Source->isConstantArrayType() && Dest->isIncompleteArrayType(); 3155cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 3156cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 315720093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 315820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 315920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 316020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 31615769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 31625769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 316320093b4bf698f292c664676987541d5103b65b15Douglas Gregor ASTContext &Context = S.Context; 3164dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 316520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 3166dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // The semantics of initializers are as follows. The destination type is 3167dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // the type of the object or reference being initialized and the source 316820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 3169dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // defined when the initializer is a braced-init-list or when it is a 317020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 3171d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 317220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 317320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isDependentType() || 317420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr::hasAnyTypeDependentArguments(Args, NumArgs)) { 317520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 317620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 317720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 317820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3179241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall for (unsigned I = 0; I != NumArgs; ++I) 3180429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Args[I]->getObjectKind() == OK_ObjCProperty) { 3181429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = S.ConvertPropertyForRValue(Args[I]); 3182429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) { 3183429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SetFailed(FK_ConversionFromPropertyFailed); 3184429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return; 3185429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 3186429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Args[I] = Result.take(); 3187429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 3188241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall 318920093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 319020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 319199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 319220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 319320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 319420093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 319520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3196dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3197dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initializer is a braced-init-list, the object is 319820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // list-initialized (8.5.4). 319920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 320020093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryListInitialization(S, Entity, Kind, InitList, *this); 3201d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 320220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3203dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 320420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 320520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 320620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 320720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 320820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 320920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 321020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 321120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 321220093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_TooManyInitsForReference); 321320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 321420093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 321520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 321620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3217dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 321820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 321999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 322099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 322120093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryValueInitialization(S, Entity, Kind, *this); 322220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 322320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3224dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 322599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 32267663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky if (Kind.getKind() == InitializationKind::IK_Default) { 322799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor TryDefaultInitialization(S, Entity, Kind, *this); 322899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 322999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 323018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 3231ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // - If the destination type is an array of characters, an array of 3232ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // char16_t, an array of char32_t, or an array of wchar_t, and the 3233ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // initializer is a string literal, see 8.5.2. 3234dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the destination type is an array, the program is 323520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 3236cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ArrayType *DestAT = Context.getAsArrayType(DestType)) { 3237cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Initializer && IsStringInit(Initializer, DestAT, Context)) { 3238ce6c9b7da219c8640a0559f75770cfc6622de083John McCall TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 3239ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return; 3240ce6c9b7da219c8640a0559f75770cfc6622de083John McCall } 3241ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 3242cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Note: as an GNU C extension, we allow initialization of an 3243cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // array from a compound literal that creates an array of the same 3244cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type, so long as the initializer has no side effects. 3245cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!S.getLangOptions().CPlusPlus && Initializer && 3246cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor isa<CompoundLiteralExpr>(Initializer->IgnoreParens()) && 3247cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Initializer->getType()->isArrayType()) { 3248cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *SourceAT 3249cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = Context.getAsArrayType(Initializer->getType()); 3250cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!hasCompatibleArrayTypes(S.Context, DestAT, SourceAT)) 3251cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor SetFailed(FK_ArrayTypeMismatch); 3252cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else if (Initializer->HasSideEffects(S.Context)) 3253cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor SetFailed(FK_NonConstantArrayInit); 3254cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else { 3255cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor setSequenceKind(ArrayInit); 3256cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor AddArrayInitStep(DestType); 3257cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 3258cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } else if (DestAT->getElementType()->isAnyCharacterType()) 325920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 326020093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 326120093b4bf698f292c664676987541d5103b65b15Douglas Gregor SetFailed(FK_ArrayNeedsInitList); 3262dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 326320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 326420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3265cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3266cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman // Handle initialization in C 3267cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman if (!S.getLangOptions().CPlusPlus) { 3268cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman setSequenceKind(CAssignment); 3269cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman AddCAssignmentStep(DestType); 3270cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 3271cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 3272dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 327320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 327420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 3275dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initialization is direct-initialization, or if it is 3276dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy-initialization where the cv-unqualified version of the 3277dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // source type is the same class as, or a derived class of, the 327820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 327920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 328020093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 328120093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 328220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 3283dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 3284d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(), *this); 3285dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise (i.e., for the remaining copy-initialization cases), 328620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 3287dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // type to the destination type or (when a conversion function is 328820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 328920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 329020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 329120093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 329220093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 329320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 329420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3295dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 329699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 329799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SetFailed(FK_TooManyInitsForScalar); 329899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 329999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 330099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 3301dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3302dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the source type is a (possibly cv-qualified) class 330320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 330499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 330520093b4bf698f292c664676987541d5103b65b15Douglas Gregor TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 330620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 330720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3308dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 330920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 33104a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 331120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 3312dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // initializer expression to the cv-unqualified version of the 331320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 3314369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall if (S.TryImplicitConversion(*this, Entity, Initializer, 3315369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ true, 3316369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*AllowExplicitConversions*/ false, 331714d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*InOverloadResolution*/ false, 331814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*CStyle=*/Kind.isCStyleOrFunctionalCast())) 33198e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor { 33201be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor DeclAccessPair dap; 33211be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor if (Initializer->getType() == Context.OverloadTy && 33221be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor !S.ResolveAddressOfOverloadedFunction(Initializer 33231be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor , DestType, false, dap)) 33248e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 33258e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor else 33268e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor SetFailed(InitializationSequence::FK_ConversionFailed); 33278e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor } 3328369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall else 3329369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall setSequenceKind(StandardConversion); 333020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 333120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 333220093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 333320093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (llvm::SmallVectorImpl<Step>::iterator Step = Steps.begin(), 333420093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 333520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 333620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 333720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 333820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 333920093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 334020093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 334120093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 3342dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic Sema::AssignmentAction 334318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 334418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 334518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 334618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 3347a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Exception: 3348a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Base: 3349059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 335018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 335118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 335218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 3353dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (Entity.getDecl() && 3354688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 3355688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 3356688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 335718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 335818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 335918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 336018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 336118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 336218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 336318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 336418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 3365dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 336618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 3367d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 3368d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3369310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 337018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 337118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 337218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 337318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Converting; 337418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 337518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 33764154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 33774154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 33782f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 337918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 33801b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 33811b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 33822f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 338318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 338418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 338518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 3386059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 3387d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3388a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 3389310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 339018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 3391dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 339218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 339318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 339418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 339518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 3396dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 339718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 339818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 339918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 34004154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 34014154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 34024154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 34034154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 34044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 34054154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 34064154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 34074154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 3408059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 34094154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 3410310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 34114154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 3412dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 34134154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 34144154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 34154154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 34164154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 34174154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 34184154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 34194154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 3420dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3421dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi llvm_unreachable("missed an InitializedEntity kind?"); 34224154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 34234154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 3424523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 3425523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 3426523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 3427523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3428523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 3429523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 343063e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// \param T The type of the temporary object, which must either be 3431523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 3432523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3433523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param Enter The entity being initialized. 3434523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3435523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 3436523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3437523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 3438523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 3439523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 3440523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 3441523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 3442523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 3443523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 344460d7b3a319d84d688752be3870615ac0f111fb16John McCallstatic ExprResult CopyObject(Sema &S, 34458fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor QualType T, 34468fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor const InitializedEntity &Entity, 34478fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor ExprResult CurInit, 34488fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor bool IsExtraneousCopy) { 34493fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 34501b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 3451dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXRecordDecl *Class = 0; 3452523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 34532f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 34542f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 34552f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return move(CurInit); 34562f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 3457f5d8f466c3eebaffc51468812bdcbe7f0fe4891aDouglas Gregor // C++0x [class.copy]p32: 34582f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 34592f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 34602f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 34612f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 34622f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 34632f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 34642f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 34652f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 34662f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 3467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // 34682f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 34693c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // elision for return statements and throw expressions are handled as part 3470dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // of constructor initialization, while copy elision for exception handlers 34713c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // is handled by the run-time. 3472558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool Elidable = CurInitExpr->isTemporaryObject(S.Context, Class); 347318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation Loc; 347418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 347518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 347618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Loc = Entity.getReturnLoc(); 347718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 3478dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 347918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Exception: 348018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Loc = Entity.getThrowLoc(); 348118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 3482dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 348318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 34847abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor Loc = Entity.getDecl()->getLocation(); 34857abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor break; 34867abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 34871b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 34881b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 348918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 349018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 34912f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_New: 349218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 3493059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 3494d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 3495310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 34962f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Loc = CurInitExpr->getLocStart(); 34972f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor break; 349818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 3499f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 3500dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Make sure that the type we are copying is complete. 3501f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor if (S.RequireCompleteType(Loc, T, S.PDiag(diag::err_temp_copy_incomplete))) 3502f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor return move(CurInit); 3503f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 3504cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Perform overload resolution using the class's copy/move constructors. 350518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor DeclContext::lookup_iterator Con, ConEnd; 35065769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 3507e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(Class); 350818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Con != ConEnd; ++Con) { 3509cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Only consider copy/move constructors and constructor templates. Per 35108ff338bfd8abd9ac5d0c1d89c1b05e2c02727174Douglas Gregor // C++0x [dcl.init]p16, second bullet to class types, this 35118ff338bfd8abd9ac5d0c1d89c1b05e2c02727174Douglas Gregor // initialization is direct-initialization. 35126493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor CXXConstructorDecl *Constructor = 0; 35136493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor 35146493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor if ((Constructor = dyn_cast<CXXConstructorDecl>(*Con))) { 3515cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Handle copy/moveconstructors, only. 35166493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor if (!Constructor || Constructor->isInvalidDecl() || 3517cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor !Constructor->isCopyOrMoveConstructor() || 35188ff338bfd8abd9ac5d0c1d89c1b05e2c02727174Douglas Gregor !Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 35196493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor continue; 35206493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor 35216493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor DeclAccessPair FoundDecl 35226493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor = DeclAccessPair::make(Constructor, Constructor->getAccess()); 35236493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 35246493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor &CurInitExpr, 1, CandidateSet); 35256493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor continue; 3526dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 35276493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor 35286493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor // Handle constructor templates. 35296493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor FunctionTemplateDecl *ConstructorTmpl = cast<FunctionTemplateDecl>(*Con); 35306493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor if (ConstructorTmpl->isInvalidDecl()) 35316493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor continue; 35326493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor 35336493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor Constructor = cast<CXXConstructorDecl>( 35346493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor ConstructorTmpl->getTemplatedDecl()); 35358ff338bfd8abd9ac5d0c1d89c1b05e2c02727174Douglas Gregor if (!Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 353618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor continue; 35379aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 35386493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor // FIXME: Do we need to limit this to copy-constructor-like 35396493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor // candidates? 35409aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl 35416493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor = DeclAccessPair::make(ConstructorTmpl, ConstructorTmpl->getAccess()); 35426493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 0, 35436493cc50b66c2d097b3e22514bbe303048c4a8ffDouglas Gregor &CurInitExpr, 1, CandidateSet, true); 35442f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor } 3545dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 354618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 354725ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth switch (CandidateSet.BestViableFunction(S, Loc, Best)) { 354818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 354918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 3550dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 355118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 355257d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext() 355357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin ? diag::ext_rvalue_to_reference_temp_copy_no_viable 355457d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin : diag::err_temp_copy_no_viable) 35557abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 355618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 3557120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall CandidateSet.NoteCandidates(S, OCD_AllCandidates, &CurInitExpr, 1); 355857d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin if (!IsExtraneousCopy || S.isSFINAEContext()) 3559f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 356057d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin return move(CurInit); 3561dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 356218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 356318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 35647abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 356518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 3566120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall CandidateSet.NoteCandidates(S, OCD_ViableCandidates, &CurInitExpr, 1); 3567f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3568dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 356918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 357018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 35717abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 357218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 357318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 357418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Best->Function->isDeleted(); 3575f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 357618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 357718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 35783fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 3579ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 35803fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 3581523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 35829a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 358357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin Best->FoundDecl.getAccess(), IsExtraneousCopy); 3584523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 3585523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 3586523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 3587523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 35882559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 35892559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 35902559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 35912559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 35922559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 35932559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 35942559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 35952559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 35962559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 35972559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 35982559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 35992559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.PDiag(diag::err_call_incomplete_argument))) 36002559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 36012559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 36022559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 36032559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 36042559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 36052559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 36062559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 3607523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 3608523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 3609523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 3610dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 361125ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth S.MarkDeclarationReferenced(Loc, Constructor); 361225ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 36133fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 3614523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 3615523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 3616f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall if (S.CompleteConstructorCall(Constructor, MultiExprArg(&CurInitExpr, 1), 36173fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 3618f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 36193fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 3620b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // Actually perform the constructor call. 3621b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 36227a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 36237a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 3624428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 3625428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 3626dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3627b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // If we're supposed to bind temporaries, do so. 3628b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) 3629b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 3630b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor return move(CurInit); 363118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 363220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3633a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 3634a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 3635a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 3636a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 3637a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 3638a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 3639a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 3640a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 3641a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 3642a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 3643a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 3644a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 3645a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 3646a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 3647dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 364820093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 364920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 365020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 3651f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiExprArg Args, 3652d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 365320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind == FailedSequence) { 365420093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 365520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Diagnose(S, Entity, Kind, (Expr **)Args.release(), NumArgs); 3656f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 365720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3658dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 365920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind == DependentSequence) { 3660d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 3661d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 3662d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 3663d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 3664d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 3665d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 3666d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 3667d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 3668d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 3669d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 3670d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 3671d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 3672d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 3673d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 3674d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 3675d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (isa<InitListExpr>((Expr *)Args.get()[0])) { 3676d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 3677d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 3678d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 3679d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 3680d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 3681d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 3682d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 3683d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 3684d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 3685d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 3686d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3687d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3688d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 3689d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 3690d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 3691d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 3692d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 3693d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 3694d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3695d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3696d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3697d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 3698d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 3699085446216a198ced4183ec1571e1ae51c2920e98Eli Friedman if (Kind.getKind() == InitializationKind::IK_Copy || Kind.isExplicitCast()) 370060d7b3a319d84d688752be3870615ac0f111fb16John McCall return ExprResult(Args.release()[0]); 370120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 370267fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor if (Args.size() == 0) 370367fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor return S.Owned((Expr *)0); 370467fa05b9ed29923b7b905a09cfb95c2ac91b5835Douglas Gregor 370520093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 370620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return S.Owned(new (S.Context) ParenListExpr(S.Context, 370720093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation(), 3708dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Expr **)Args.release(), 370920093b4bf698f292c664676987541d5103b65b15Douglas Gregor NumArgs, 371020093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation())); 371120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 371220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 371399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (SequenceKind == NoInitialization) 371499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 3715dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3716d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 3717d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 3718a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 3719a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 3720d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 3721a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 3722d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 372320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 372460d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult CurInit = S.Owned((Expr *)0); 3725dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 372699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(!Steps.empty() && "Cannot have an empty initialization sequence"); 3727dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3728dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // For initialization steps that start with a single initializer, 372999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 373099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 373199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 373218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 373318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 3734906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 373518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 373618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 373718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 3738523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 373918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 374018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 3741906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 374218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 374318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 374418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 374518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 3746cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 3747cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ObjCObjectConversion: 3748cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: { 374918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 3750429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = Args.get()[0]; 3751429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (!CurInit.get()) return ExprError(); 3752f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall 3753f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall // Read from a property when initializing something with it. 3754429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.get()->getObjectKind() == OK_ObjCProperty) { 3755429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ConvertPropertyForRValue(CurInit.take()); 3756429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.isInvalid()) 3757429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 3758429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 375918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 3760f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall } 3761dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 376218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 376318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 376418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 376520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3766dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3767dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Walk through the computed steps for the initialization sequence, 376820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 376916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 377020093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 377120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 377220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 3773f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3774dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3775429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get() ? CurInit.get()->getType() : QualType(); 3776dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 377720093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 377820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 3779dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Overload resolution determined which function invoke; update the 378020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 3781429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckAddressOfMemberAccess(CurInit.get(), Step->Function.FoundDecl); 3782b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation()); 3783b13b737a2450167c82e148590e8019b839ce6b98John McCall CurInit = S.FixOverloadedFunctionReference(move(CurInit), 37846bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 37859aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 378620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3787dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 378820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 3789906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 379020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 379120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 379220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 3793dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3794f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXCastPath BasePath; 37955cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 379620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 379720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 379820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 3799429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getLocStart(), 3800429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getSourceRange(), 38015cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 3802f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3803dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38046fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (S.BasePathInvolvesVirtualBase(BasePath)) { 38056fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor QualType T = SourceType; 38066fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const PointerType *Pointer = T->getAs<PointerType>()) 38076fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor T = Pointer->getPointeeType(); 38086fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const RecordType *RecordTy = T->getAs<RecordType>()) 3809429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkVTableUsed(CurInit.get()->getLocStart(), 38106fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor cast<CXXRecordDecl>(RecordTy->getDecl())); 38116fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor } 38126fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 38135baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 3814906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_CastDerivedToBaseLValue ? 38155baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 3816906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_CastDerivedToBaseXValue ? 38175baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 38185baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 3819f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 3820f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Step->Type, 38212de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_DerivedToBase, 38225baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall CurInit.get(), 38235baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall &BasePath, VK)); 382420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 382520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3826dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 382720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 3828429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (FieldDecl *BitField = CurInit.get()->getBitField()) { 382920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 383020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 3831d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 383220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 3833429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 383420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 3835f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 383620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3837a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 3838429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.get()->refersToVectorElement()) { 383941593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 3840093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 3841093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 3842429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 3843a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 3844f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3845093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 3846dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 384720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 384820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 384920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 3850429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 3851f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 38523aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 385320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 38543aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 385520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 3856a64a869312066ff6119d1d7ae03f88ce499e3f82Anders Carlsson // Reference binding does not have any corresponding ASTs. 3857a64a869312066ff6119d1d7ae03f88ce499e3f82Anders Carlsson 385820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 3859429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 3860f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 386120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 386220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3863dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3864523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 3865dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = CopyObject(S, Step->Type, Entity, move(CurInit), 3866523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 3867523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 3868523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 386920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 387020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 387120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 3872daa8e4e888758d55a7a759dd4a91b83921cef222John McCall CastKind CastKind; 387318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 38749aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 38759aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 38764154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 3877f0e0b17d0504d25b4673de015cf7401e2296323cDouglas Gregor bool IsLvalue = false; 3878b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 387920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 3880ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 3881429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SourceLocation Loc = CurInit.get()->getLocStart(); 388220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 3883b13b737a2450167c82e148590e8019b839ce6b98John McCall 388420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 388520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 3886429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Expr *Arg = CurInit.get(); 388720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 3888429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley MultiExprArg(&Arg, 1), 388920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 3890f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3891dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 389220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the an expression that constructs a temporary. 3893dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 38947a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 38957a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 3896428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 3897428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 389820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 3899f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3900b13b737a2450167c82e148590e8019b839ce6b98John McCall 39019a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 39029aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 3903b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 3904dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 39052de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_ConstructorConversion; 390618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 390718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 390818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 390918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 3910dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 39114154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 391220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 391320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 3914b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 3915f0e0b17d0504d25b4673de015cf7401e2296323cDouglas Gregor IsLvalue = Conversion->getResultType()->isLValueReferenceType(); 3916429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckMemberOperatorAccess(Kind.getLocation(), CurInit.get(), 0, 39179aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 3918b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 3919dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3920dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Should we move this initialization into a separate 392120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 392220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 3923429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 3924429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformObjectArgumentInitialization(CurInit.take(), /*Qualifier=*/0, 3925429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley FoundFn, Conversion); 3926429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if(CurInitExprRes.isInvalid()) 3927f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3928429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 3929dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 393020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 3931429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.BuildCXXMemberCallExpr(CurInit.get(), FoundFn, Conversion); 393220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 3933f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3934dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 39352de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_UserDefinedConversion; 3936dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 39374154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 393820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3939dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3940dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi bool RequiresCopy = !IsCopy && 39412f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor getKind() != InitializationSequence::ReferenceBinding; 39422f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy || shouldBindAsTemporary(Entity)) 394318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 39444154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor else if (CreatedObject && shouldDestroyTemporary(Entity)) { 3945429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType T = CurInit.get()->getType(); 39464154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 3947dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXDestructorDecl *Destructor 3948db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); 3949429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckDestructorAccess(CurInit.get()->getLocStart(), Destructor, 39504154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 3951429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkDeclarationReferenced(CurInit.get()->getLocStart(), Destructor); 3952429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.DiagnoseUseOfDecl(Destructor, CurInit.get()->getLocStart()); 39534154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 39544154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 3955dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3956906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl // FIXME: xvalues 3957f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 3958429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getType(), 3959429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CastKind, CurInit.get(), 0, 39605baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall IsLvalue ? VK_LValue : VK_RValue)); 3961dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 39622f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 3963523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 3964523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor move(CurInit), /*IsExtraneousCopy=*/false); 3965906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 396620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 396720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3968906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 396920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 3970906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 3971906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionRValue: { 397220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 39735baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 3974906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_QualificationConversionLValue ? 39755baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 3976906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_QualificationConversionXValue ? 39775baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 39785baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 3979429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, CK_NoOp, VK); 398020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3981906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 3982906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 3983f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 3984429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 3985429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformImplicitConversion(CurInit.get(), Step->Type, *Step->ICS, 3986429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley getAssignmentAction(Entity), 3987429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Kind.isCStyleOrFunctionalCast()); 3988429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 3989f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3990429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 399120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 3992f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 3993dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3994d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 3995429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 3996d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType Ty = Step->Type; 3997cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (S.CheckInitList(Entity, InitList, ResultType? *ResultType : Ty)) 3998f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 3999d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4000d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 4001d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit = S.Owned(InitList); 4002d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4003d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 400451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 400551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: { 4006d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor unsigned NumArgs = Args.size(); 400751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor CXXConstructorDecl *Constructor 40089aa472c45d2bd81b7b52c225e8acc560d716db97John McCall = cast<CXXConstructorDecl>(Step->Function.Function); 4009dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 401051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Build a call to the selected constructor. 4011ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 40120a2eb5685aaef78ce33e84dd8c70ad3ff31b0e11Fariborz Jahanian SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) 40130a2eb5685aaef78ce33e84dd8c70ad3ff31b0e11Fariborz Jahanian ? Kind.getEqualLoc() 40140a2eb5685aaef78ce33e84dd8c70ad3ff31b0e11Fariborz Jahanian : Kind.getLocation(); 40154e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth 40164e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth if (Kind.getKind() == InitializationKind::IK_Default) { 40174e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth // Force even a trivial, implicit default constructor to be 40184e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth // semantically checked. We do this explicitly because we don't build 40194e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth // the definition for completely trivial constructors. 40204e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth CXXRecordDecl *ClassDecl = Constructor->getParent(); 40214e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth assert(ClassDecl && "No parent class for constructor."); 40221e23865d0e148a3951a9b418e57b7e0762dc3098Sean Hunt if (Constructor->isDefaulted() && Constructor->isDefaultConstructor() && 4023023df37c27ee8035664fb62f206ca58f4e2a169dSean Hunt ClassDecl->hasTrivialDefaultConstructor() && 4024023df37c27ee8035664fb62f206ca58f4e2a169dSean Hunt !Constructor->isUsed(false)) 40254e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth S.DefineImplicitDefaultConstructor(Loc, Constructor); 40264e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth } 40274e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth 402851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // Determine the arguments required to actually perform the constructor 402951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // call. 4030dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (S.CompleteConstructorCall(Constructor, move(Args), 403151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Loc, ConstructorArgs)) 4032f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4033dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4034dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 403591be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor if (Entity.getKind() == InitializedEntity::EK_Temporary && 4036d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor NumArgs != 1 && // FIXME: Hack to work around cast weirdness 403791be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct || 403891be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Kind.getKind() == InitializationKind::IK_Value)) { 403991be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor // An explicitly-constructed temporary, e.g., X(1, 2). 404091be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor unsigned NumExprs = ConstructorArgs.size(); 404191be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Expr **Exprs = (Expr **)ConstructorArgs.take(); 404210f8e319569c8b8b4603d8a72ce01a7a01502c85Fariborz Jahanian S.MarkDeclarationReferenced(Loc, Constructor); 40439b623639378d53a675921ddfa7316034d571881eDouglas Gregor S.DiagnoseUseOfDecl(Constructor, Loc); 4044dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4045ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 4046ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor if (!TSInfo) 4047ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo = S.Context.getTrivialTypeSourceInfo(Entity.getType(), Loc); 4048dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 404991be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 405091be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor Constructor, 4051ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo, 4052dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Exprs, 405391be6f5ccbde073e592bed9a3e3bc363957714fbDouglas Gregor NumExprs, 4054428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth Kind.getParenRange(), 40551c63b9c15d48cb8c833a4b2d6fd6c496c0766e88Douglas Gregor ConstructorInitRequiresZeroInit)); 405672e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson } else { 405772e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::ConstructionKind ConstructKind = 405872e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::CK_Complete; 4059dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 406072e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson if (Entity.getKind() == InitializedEntity::EK_Base) { 406172e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? 4062dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXConstructExpr::CK_VirtualBase : 406372e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson CXXConstructExpr::CK_NonVirtualBase; 4064d49bd5515b89bedc57c3d1d3be457e4340dbdb1dSean Hunt } else if (Entity.getKind() == InitializedEntity::EK_Delegating) { 4065059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt ConstructKind = CXXConstructExpr::CK_Delegating; 4066059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt } 4067dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4068428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth // Only get the parenthesis range if it is a direct construction. 4069428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange parenRange = 4070428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth Kind.getKind() == InitializationKind::IK_Direct ? 4071428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth Kind.getParenRange() : SourceRange(); 4072428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth 40733c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // If the entity allows NRVO, mark the construction as elidable 40743c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // unconditionally. 40753c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor if (Entity.allowsNRVO()) 40763c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 40773c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor Constructor, /*Elidable=*/true, 40783c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor move_arg(ConstructorArgs), 40793c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor ConstructorInitRequiresZeroInit, 4080428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth ConstructKind, 4081428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth parenRange); 40823c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor else 40833c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 4084dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Constructor, 40853c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor move_arg(ConstructorArgs), 40863c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor ConstructorInitRequiresZeroInit, 4087428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth ConstructKind, 4088428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth parenRange); 408972e96fd181b19b8d01144a685cda6e955584c7eaAnders Carlsson } 409051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (CurInit.isInvalid()) 4091f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4092b13b737a2450167c82e148590e8019b839ce6b98John McCall 4093b13b737a2450167c82e148590e8019b839ce6b98John McCall // Only check access if all of that succeeded. 40949a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 40959aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.FoundDecl.getAccess()); 4096b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Loc); 4097dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 40982f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (shouldBindAsTemporary(Entity)) 409918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 4100dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 410151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 410251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 4103dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 410471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 410516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 410616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 4107dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (NextStep != StepEnd && 410816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor NextStep->Kind == SK_ConstructorInitialization) { 410916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 411016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 411116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 411216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 411316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor S.getLangOptions().CPlusPlus && 411416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 4115ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 4116ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor if (!TSInfo) 4117dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TSInfo = S.Context.getTrivialTypeSourceInfo(Step->Type, 4118ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor Kind.getRange().getBegin()); 4119ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor 4120ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor CurInit = S.Owned(new (S.Context) CXXScalarValueInitExpr( 4121ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo->getType().getNonLValueExprType(S.Context), 4122ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo, 412371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 412416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 412571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 412616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 412771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 412871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 412918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 413018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 4131429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get()->getType(); 4132429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = move(CurInit); 413318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 4134429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckSingleAssignmentConstraints(Step->Type, Result); 4135429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 4136429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 4137429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(Result); 4138aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 4139aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 4140429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = move(CurInit); 4141aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 4142aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 4143429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExprRes) 4144aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 4145aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 4146429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 4147429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 4148429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 4149aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 4150a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 415118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 415218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 4153429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get(), 4154a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 4155a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 4156a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 4157f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4158a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 4159a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 416018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 416118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 4162cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 4163cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 4164cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 4165429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CheckStringInit(CurInit.get(), ResultType ? *ResultType : Ty, 4166fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall S.Context.getAsArrayType(Ty), S); 4167cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 4168cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 4169569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 4170569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 4171429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, 41722de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_ObjCObjectLValueCast, 4173429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CastCategory(CurInit.get())); 4174569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 4175cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4176cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 4177cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Okay: we checked everything before creating this step. Note that 4178cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // this is a GNU extension. 4179cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), diag::ext_array_init_copy) 4180429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << Step->Type << CurInit.get()->getType() 4181429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 4182cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4183cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the destination type is an incomplete array type, update the 4184cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type accordingly. 4185cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (ResultType) { 4186cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const IncompleteArrayType *IncompleteDest 4187cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = S.Context.getAsIncompleteArrayType(Step->Type)) { 4188cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ConstantArrayType *ConstantSource 4189429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley = S.Context.getAsConstantArrayType(CurInit.get()->getType())) { 4190cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor *ResultType = S.Context.getConstantArrayType( 4191cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor IncompleteDest->getElementType(), 4192cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ConstantSource->getSize(), 4193cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ArrayType::Normal, 0); 4194cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 4195cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 4196cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 4197cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4198cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 419920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 420020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 420115d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall 420215d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall // Diagnose non-fatal problems with the completed initialization. 420315d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall if (Entity.getKind() == InitializedEntity::EK_Member && 420415d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl())->isBitField()) 420515d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall S.CheckBitFieldInitialization(Kind.getLocation(), 420615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl()), 420715d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall CurInit.get()); 4208dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 420920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return move(CurInit); 421020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 421120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 421220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 421320093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 421420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 4215dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumibool InitializationSequence::Diagnose(Sema &S, 421620093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 421720093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 421820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 421920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (SequenceKind != FailedSequence) 422020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 4221dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4222d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 422320093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 422420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 42259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 42269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 42279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 42289db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 42299db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 42309db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 42319db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 423220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4233dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 423420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 423520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 423620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 423720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 423820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4239dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4240cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 4241cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 4242cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), 4243cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor (Failure == FK_ArrayTypeMismatch 4244cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ? diag::err_array_init_different_type 4245cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor : diag::err_array_init_non_constant_array)) 4246cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << DestType.getNonReferenceType() 4247cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getType() 4248cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getSourceRange(); 4249cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 4250cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 42516bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 42526bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 4253dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.ResolveAddressOfOverloadedFunction(Args[0], 425420093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 42556bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 42566bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 425720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 42586bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 4259dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 426020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 42614a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 426220093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 426320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 426418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 426518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 426618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 426718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 426818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 426918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 427018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 427118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 427218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4273120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, Args, NumArgs); 427420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4275dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 427620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 427720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 427820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 427920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 4280120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, Args, NumArgs); 428120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4282dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 428320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 428420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 428520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 428620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 428720093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 4288120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 42898fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best, 42908fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor true); 429120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 429220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 429320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Best->Function->isDeleted(); 429420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 42959f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 429620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 429720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 429820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4299dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 430020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 43019f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 430220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 430320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 430420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4305dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 430620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 430720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 4308dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Kind.getLocation(), 430920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 431020093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 431120093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 4312ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 431320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 431420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 431520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 431620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4317dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 431820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 431920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 4320fb5d7efc279335bde2cdc0a73da525d6b28201e9Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getType() 432120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 432220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4323dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 432420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 432520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 432620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 432720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 432820093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 432920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4330dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 433120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 433220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 433320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 43347eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 433520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 433620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 433720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4338dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 43391be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor case FK_ConversionFailed: { 43401be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor QualType FromType = Args[0]->getType(); 434118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_init_conversion_failed) 434218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 434320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 43447eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 43451be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor << FromType 434620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 4347d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 43481be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor } 4349429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 4350429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 4351429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley // No-op. This error has already been reported. 4352429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 4353429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 4354d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 435599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 435699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 435799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 435819311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(InitList->getInit(0)->getLocEnd(), 435999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 4360dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi else 436119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(Args[0]->getLocEnd(), Args[NumArgs - 1]->getLocEnd()); 4362d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 436319311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R.setBegin(S.PP.getLocForEndOfToken(R.getBegin())); 436419311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor if (Kind.isCStyleOrFunctionalCast()) 436519311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_builtin_func_cast_more_than_one_arg) 436619311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << R; 436719311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor else 436819311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 436919311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << /*scalar=*/2 << R; 4370d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4371d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4372d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4373d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 4374d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 4375d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 4376d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4377d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4378d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 4379d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 4380d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 4381d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 4382dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 438351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 438451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 438551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 4386dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ArgsRange = SourceRange(Args[0]->getLocStart(), 438751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 4388dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 438951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 439051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 439151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 439251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 439351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 439451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 4395120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 4396120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall Args, NumArgs); 439751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 4398dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 439951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 44009db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 44019db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 44029db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 44039db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 44049db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 44059db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 44069db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 44079db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 44089db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 44099db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 44109db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 44119db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 44129db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 44139db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 44149db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 44159db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 44169db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 44179db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 44189db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 44199db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 44209db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 44219db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 44229db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 44239db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 44249db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 44259db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 44269db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 44279db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 44289db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 44299db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 44309db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 44319db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 4432dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Record->getDecl()->getLocation(), 44339db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 44349db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 44359db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 44369db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 44379db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 44389db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 443951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 444051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 4441120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, Args, NumArgs); 444251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 4443dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 444451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 444551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 444651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << true << DestType << ArgsRange; 444751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 4448120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 4449120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 445051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (Ovl == OR_Deleted) { 445151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 445251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << Best->Function->isDeleted(); 445351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } else { 445451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 445551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 445651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 445751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 4458dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 445951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 446051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 446151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 446251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 446351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 446451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 4465dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 446699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 44679db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 44689db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 44699db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 44709db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 44719db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 44729db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 44739db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 44749db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 44759db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 44769db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 44779db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 44789db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 44799db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 44809db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 44819db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 44829db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 44839db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 448499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 4485dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 448672a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 4487dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.RequireCompleteType(Kind.getLocation(), DestType, 448872a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor diag::err_init_incomplete_type); 4489dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi break; 449020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4491dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4492a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 449320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 449420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 449518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4496de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump(llvm::raw_ostream &OS) const { 4497de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 4498de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 4499de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 4500de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 4501de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 4502de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 4503de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4504dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4505de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 4506de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 4507de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4508dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4509de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 4510de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 4511de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4512dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4513cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 4514cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array type mismatch"; 4515cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 4516cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4517cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 4518cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "non-constant array initializer"; 4519cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 4520cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4521de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 4522de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 4523de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4524dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4525de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 4526de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 4527de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4528dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4529de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 4530de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 4531de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4532dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4533de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 4534de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 4535de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4536dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4537de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 4538de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 4539de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4540dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4541de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 4542de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 4543de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4544dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4545de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 4546de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 4547de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4548dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4549de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 4550de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 4551de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4552dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4553429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 4554429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley OS << "conversion from property failed"; 4555429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 4556429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 4557de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 4558de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 4559de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4560dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4561de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 4562de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 4563de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4564dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4565de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 4566de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 4567de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4568dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4569de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 4570de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 4571de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4572dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4573de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 4574de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 4575de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4576dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4577de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 4578de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 4579de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4580dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 458172a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 458272a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor OS << "initialization of incomplete type"; 458372a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 4584dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 4585de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 4586de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4587de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4588dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4589de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 4590de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Dependent sequence: "; 4591de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4592dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4593de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case UserDefinedConversion: 4594de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "User-defined conversion sequence: "; 4595de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4596dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4597de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ConstructorInitialization: 4598de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Constructor initialization sequence: "; 4599de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4600dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4601de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ReferenceBinding: 4602de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Reference binding: "; 4603de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4604dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4605de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ListInitialization: 4606de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "List initialization: "; 4607de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4608de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4609de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case ZeroInitialization: 4610de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Zero initialization\n"; 4611de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4612dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4613de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case NoInitialization: 4614de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "No initialization\n"; 4615de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 4616dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4617de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case StandardConversion: 4618de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Standard conversion: "; 4619de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4620dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4621de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case CAssignment: 4622de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment: "; 4623de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4624dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4625de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case StringInit: 4626de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "String initialization: "; 4627de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4628cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4629cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case ArrayInit: 4630cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "Array initialization: "; 4631cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 4632de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4633dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4634de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 4635de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 4636de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 4637de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4638dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4639de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 4640de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4641de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 4642de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4643dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4644de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 4645de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 4646de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4647dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4648906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 4649906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "derived-to-base case (xvalue" << S->Type.getAsString() << ")"; 4650906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 4651dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4652de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 4653de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 4654de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4655dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4656de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 4657de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 4658de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4659dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4660de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 4661de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 4662de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4663dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4664523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 4665523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 4666523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 4667523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4668de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 4669900fc6388e803868a34b9483510c345e9b49d7ebBenjamin Kramer OS << "user-defined conversion via " << S->Function.Function; 4670de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4671906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 4672de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 4673de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 4674de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4675906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 4676906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "qualification conversion (xvalue)"; 4677906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 4678de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 4679de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 4680de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4681dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4682de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 4683de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 4684de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 4685de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 4686de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4687dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4688de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 4689de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "list initialization"; 4690de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4691dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4692de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 4693de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 4694de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4695dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4696de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 4697de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 4698de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4699dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4700de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 4701de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 4702de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4703dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4704de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 4705de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 4706de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 4707569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 4708569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 4709569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor OS << "Objective-C object conversion"; 4710569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 4711cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 4712cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 4713cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array initialization"; 4714cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 4715de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4716de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 4717de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 4718de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 4719de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 4720de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 4721de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 4722de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 472318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 472418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 472518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 47262be7e90b81509204b99b7bbf9753ad17b894a12aSean Huntbool 47272be7e90b81509204b99b7bbf9753ad17b894a12aSean HuntSema::CanPerformCopyInitialization(const InitializedEntity &Entity, 47282be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt ExprResult Init) { 47292be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt if (Init.isInvalid()) 47302be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt return false; 47312be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 47322be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt Expr *InitE = Init.get(); 47332be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt assert(InitE && "No initialization expression"); 47342be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 47352be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationKind Kind = InitializationKind::CreateCopy(SourceLocation(), 47362be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt SourceLocation()); 47372be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 47382be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt return Seq.getKind() != InitializationSequence::FailedSequence; 47392be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt} 47402be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 4741dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 474218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 474318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 474460d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Init) { 474518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 474618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 474718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 474815d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall Expr *InitE = Init.get(); 474918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 475018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 475118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 475218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 475318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 475418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 475518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc); 475618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 475718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 4758f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return Seq.Perform(*this, Entity, Kind, MultiExprArg(&InitE, 1)); 475918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 4760