SemaInit.cpp revision 425d631082699b37624a7b1d6abb87c7abd5abe6
10cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===--- SemaInit.cpp - Semantic Analysis for Initializers ----------------===// 20cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 30cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// The LLVM Compiler Infrastructure 40cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 50cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// This file is distributed under the University of Illinois Open Source 60cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// License. See LICENSE.TXT for details. 70cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 80cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===----------------------------------------------------------------------===// 90cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff// 105d3d41d0873d51b405972baf38e1f3a7ef5b49e0Sebastian Redl// This file implements semantic analysis for initializers. 11dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// 120cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff//===----------------------------------------------------------------------===// 130cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1419510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/Designator.h" 15e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Initialization.h" 16e737f5041a36d0befb39ffeed8d50ba15916d3daDouglas Gregor#include "clang/Sema/Lookup.h" 172d88708cbe4e4ec5e04e4acb6bd7f5be68557379John McCall#include "clang/Sema/SemaInternal.h" 181e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner#include "clang/Lex/Preprocessor.h" 190cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff#include "clang/AST/ASTContext.h" 207cd088e519d7e6caa4c4c12db52e0e4ae35d25c2John McCall#include "clang/AST/DeclObjC.h" 212078bb9c9336da56ea521e98e718556b227541f6Anders Carlsson#include "clang/AST/ExprCXX.h" 2279e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner#include "clang/AST/ExprObjC.h" 23d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor#include "clang/AST/TypeLoc.h" 2420093b4bf698f292c664676987541d5103b65b15Douglas Gregor#include "llvm/Support/ErrorHandling.h" 25191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin#include "llvm/Support/raw_ostream.h" 26c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor#include <map> 2705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregorusing namespace clang; 280cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 29dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 30dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Sema Initialization Checking 31dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 32dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 33ce6c9b7da219c8640a0559f75770cfc6622de083John McCallstatic Expr *IsStringInit(Expr *Init, const ArrayType *AT, 34ce6c9b7da219c8640a0559f75770cfc6622de083John McCall ASTContext &Context) { 358718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman if (!isa<ConstantArrayType>(AT) && !isa<IncompleteArrayType>(AT)) 368718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman return 0; 378718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman 388879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // See if this is a string literal or @encode. 398879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner Init = Init->IgnoreParens(); 401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 418879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Handle @encode, which is a narrow string. 428879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner if (isa<ObjCEncodeExpr>(Init) && AT->getElementType()->isCharType()) 438879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner return Init; 448879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 458879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner // Otherwise we can only handle string literals. 468879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner StringLiteral *SL = dyn_cast<StringLiteral>(Init); 47220b6369d7717bfe6894b46cef055d3e763827f2Chris Lattner if (SL == 0) return 0; 48bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman 49bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman QualType ElemTy = Context.getCanonicalType(AT->getElementType()); 505cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor 515cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor switch (SL->getKind()) { 525cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::Ascii: 535cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::UTF8: 545cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // char array can be initialized with a narrow string. 555cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // Only allow char x[] = "foo"; not char x[] = L"foo"; 56bb6415c69fc6440c337970e39749d4d482d9de42Eli Friedman return ElemTy->isCharType() ? Init : 0; 575cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::UTF16: 585cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return ElemTy->isChar16Type() ? Init : 0; 595cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::UTF32: 605cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return ElemTy->isChar32Type() ? Init : 0; 615cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor case StringLiteral::Wide: 625cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // wchar_t array can be initialized with a wide string: C99 6.7.8p15 (with 635cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // correction from DR343): "An array with element type compatible with a 645cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // qualified or unqualified version of wchar_t may be initialized by a wide 655cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor // string literal, optionally enclosed in braces." 665cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor if (Context.typesAreCompatible(Context.getWCharType(), 675cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor ElemTy.getUnqualifiedType())) 685cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return Init; 698879e3b29d2527260c401bce0ed0e401901ef601Chris Lattner 705cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor return 0; 715cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor } 721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 735cee1195584fa8672253139c86e922daeda69b9eDouglas Gregor llvm_unreachable("missed a StringLiteral kind?"); 74dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 75dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 76ce6c9b7da219c8640a0559f75770cfc6622de083John McCallstatic Expr *IsStringInit(Expr *init, QualType declType, ASTContext &Context) { 77ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = Context.getAsArrayType(declType); 78ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (!arrayType) return 0; 79ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 80ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return IsStringInit(init, arrayType, Context); 81ce6c9b7da219c8640a0559f75770cfc6622de083John McCall} 82ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 83fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCallstatic void CheckStringInit(Expr *Str, QualType &DeclT, const ArrayType *AT, 84fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall Sema &S) { 8579e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner // Get the length of the string as parsed. 8679e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner uint64_t StrLength = 8779e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner cast<ConstantArrayType>(Str->getType())->getSize().getZExtValue(); 8879e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner 891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 90dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner if (const IncompleteArrayType *IAT = dyn_cast<IncompleteArrayType>(AT)) { 911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // C99 6.7.8p14. We have an array of character type with unknown size 92dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // being initialized to a string literal. 93dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner llvm::APSInt ConstVal(32); 9419da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner ConstVal = StrLength; 95dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner // Return a new array type (C99 6.7.8p22). 9646a617a792bfab0d9b1e057371ea3b9540802226John McCall DeclT = S.Context.getConstantArrayType(IAT->getElementType(), 9746a617a792bfab0d9b1e057371ea3b9540802226John McCall ConstVal, 9846a617a792bfab0d9b1e057371ea3b9540802226John McCall ArrayType::Normal, 0); 9919da8cdfb3d5cd31e06d02c7bab1eb1bd41a7949Chris Lattner return; 100dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner } 1011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1028718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman const ConstantArrayType *CAT = cast<ConstantArrayType>(AT); 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 104bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // We have an array of character type with known size. However, 1058718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // the size may be smaller or larger than the string we are initializing. 1068718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // FIXME: Avoid truncation for 64-bit length strings. 107bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (S.getLangOptions().CPlusPlus) { 108b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (StringLiteral *SL = dyn_cast<StringLiteral>(Str)) { 109b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // For Pascal strings it's OK to strip off the terminating null character, 110b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // so the example below is valid: 111b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // 112b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson // unsigned char a[2] = "\pa"; 113b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson if (SL->isPascal()) 114b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson StrLength--; 115b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson } 116b8fc45f8d0fdcc7908590115942d425bf4a924f1Anders Carlsson 117bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // [dcl.init.string]p2 118bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength > CAT->getSize().getZExtValue()) 119bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman S.Diag(Str->getSourceRange().getBegin(), 120bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::err_initializer_string_for_char_array_too_long) 121bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 122bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } else { 123bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman // C99 6.7.8p14. 124bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman if (StrLength-1 > CAT->getSize().getZExtValue()) 125bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman S.Diag(Str->getSourceRange().getBegin(), 126bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman diag::warn_initializer_string_for_char_array_too_long) 127bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman << Str->getSourceRange(); 128bc34b1d7f4f371bfdebf68d66086f54586d68abeEli Friedman } 1291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1308718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // Set the type to the actual size that we are initializing. If we have 1318718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // something like: 1328718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // char x[1] = "foo"; 1338718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman // then this will set the string literal's type to char[1]. 1348718a6a02ccc53fea758677781a8df3a8b0c41c9Eli Friedman Str->setType(DeclT); 135dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner} 136dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 137dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 138dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner// Semantic checking for initializer lists. 139dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner//===----------------------------------------------------------------------===// 140dd8e0065207e953bb28b95ad9cb6b2c13f56b3b8Chris Lattner 1419e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// @brief Semantic checking for initializer lists. 1429e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1439e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// The InitListChecker class contains a set of routines that each 1449e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// handle the initialization of a certain kind of entity, e.g., 1459e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// arrays, vectors, struct/union types, scalars, etc. The 1469e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// InitListChecker itself performs a recursive walk of the subobject 1479e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure of the type to be initialized, while stepping through 1489e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// the initializer list one element at a time. The IList and Index 1499e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// parameters to each of the Check* routines contain the active 1509e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// (syntactic) initializer list and the index into that initializer 1519e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list that represents the current initializer. Each routine is 1529e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// responsible for moving that Index forward as it consumes elements. 1539e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1549e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// Each Check* routine also has a StructuredList/StructuredIndex 15563e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// arguments, which contains the current "structured" (semantic) 1569e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initializer list and the index into that initializer list where we 1579e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// are copying initializers as we map them over to the semantic 1589e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. Once we have completed our recursive walk of the subobject 1599e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// structure, we will have constructed a full semantic initializer 1609e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// list. 1619e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// 1629e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// C99 designators cause changes in the initializer list traversal, 1639e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// because they make the initialization "jump" into a specific 1649e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// subobject and then continue the initialization from that 1659e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// point. CheckDesignatedInitializer() recursively steps into the 1669e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// designated subobject and manages backing out the recursion to 1679e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor/// initialize the subobjects after the one designated. 1688b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattnernamespace { 169c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorclass InitListChecker { 1700820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner Sema &SemaRef; 171c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool hadError; 17214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool VerifyOnly; // no diagnostics, no structure building 173c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool AllowBraceElision; 174c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor std::map<InitListExpr *, InitListExpr *> SyntacticToSemantic; 175c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *FullyStructuredList; 1761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1778ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckImplicitInitList(const InitializedEntity &Entity, 178987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, QualType T, 1799e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 180629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman unsigned &StructuredIndex); 1818ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckExplicitInitList(const InitializedEntity &Entity, 18246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 1839e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &Index, InitListExpr *StructuredList, 184eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 185eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1868ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckListElementTypes(const InitializedEntity &Entity, 18746f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &DeclType, 1881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 189c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1909e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 191eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 192eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 1938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckSubElementType(const InitializedEntity &Entity, 19446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType ElemType, 195c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 1969e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 1979e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 1980c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman void CheckComplexType(const InitializedEntity &Entity, 1990c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 2000c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 2010c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 2020c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex); 2038ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckScalarType(const InitializedEntity &Entity, 20446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 205c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 2069e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2079e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2088ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckReferenceType(const InitializedEntity &Entity, 2098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 210930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 211930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 212930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex); 2138ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckVectorType(const InitializedEntity &Entity, 21446f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, unsigned &Index, 2159e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2169e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2178ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckStructUnionTypes(const InitializedEntity &Entity, 2182bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, QualType DeclType, 2191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator Field, 220c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2219e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 222eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 223eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject = false); 2248ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson void CheckArrayType(const InitializedEntity &Entity, 225784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 2261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::APSInt elementIndex, 227c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool SubobjectIsDesignatorContext, unsigned &Index, 2289e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor InitListExpr *StructuredList, 2299e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex); 2308ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson bool CheckDesignatedInitializer(const InitializedEntity &Entity, 2319a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, DesignatedInitExpr *DIE, 232711997184366d584c9c437102cae1e9d9927b986Douglas Gregor unsigned DesigIdx, 2331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &CurrentObjectType, 234c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor RecordDecl::field_iterator *NextField, 235c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor llvm::APSInt *NextElementIndex, 236c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &Index, 237c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 238c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned &StructuredIndex, 239eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 240eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject); 241c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 242c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor QualType CurrentObjectType, 243c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *StructuredList, 244c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor unsigned StructuredIndex, 245c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor SourceRange InitRange); 2469e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor void UpdateStructuredListElement(InitListExpr *StructuredList, 2479e80f7252ec1b91142e41790e4491c61e14b9472Douglas Gregor unsigned &StructuredIndex, 248c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor Expr *expr); 249c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numArrayElements(QualType DeclType); 250c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor int numStructUnionElements(QualType DeclType); 251930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 252d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor void FillInValueInitForField(unsigned Init, FieldDecl *Field, 253d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 254d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 255cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor void FillInValueInitializations(const InitializedEntity &Entity, 256cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, bool &RequiresSecondPass); 257f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool CheckFlexibleArrayInit(const InitializedEntity &Entity, 258f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, FieldDecl *Field, 259f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject); 2603ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl void CheckValueInitializable(const InitializedEntity &Entity); 2613ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 262c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregorpublic: 263cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListChecker(Sema &S, const InitializedEntity &Entity, 264c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl InitListExpr *IL, QualType &T, bool VerifyOnly, 265c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool AllowBraceElision); 266c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor bool HadError() { return hadError; } 267c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 268c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // @brief Retrieves the fully-structured initializer list used for 269c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor // semantic analysis and code generation. 270c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor InitListExpr *getFullyStructuredList() const { return FullyStructuredList; } 271c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor}; 2728b419b9b5f21cf948cf6fe788f67bf1efd97524cChris Lattner} // end anonymous namespace 27368355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 2743ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redlvoid InitListChecker::CheckValueInitializable(const InitializedEntity &Entity) { 2753ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl assert(VerifyOnly && 2763ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl "CheckValueInitializable is only inteded for verification mode."); 2773ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 2783ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SourceLocation Loc; 2793ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 2803ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl true); 2813ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializationSequence InitSeq(SemaRef, Entity, Kind, 0, 0); 2823ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (InitSeq.Failed()) 2833ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 2843ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl} 2853ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 286d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregorvoid InitListChecker::FillInValueInitForField(unsigned Init, FieldDecl *Field, 287d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor const InitializedEntity &ParentEntity, 288dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitListExpr *ILE, 289d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor bool &RequiresSecondPass) { 290d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SourceLocation Loc = ILE->getSourceRange().getBegin(); 291d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned NumInits = ILE->getNumInits(); 292dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity MemberEntity 293d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = InitializedEntity::InitializeMember(Field, &ParentEntity); 294d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Init >= NumInits || !ILE->getInit(Init)) { 295d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // FIXME: We probably don't need to handle references 296d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // specially here, since value-initialization of references is 297d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // handled in InitializationSequence. 298d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->getType()->isReferenceType()) { 299d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // C++ [dcl.init.aggr]p9: 300d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // If an incomplete or empty initializer-list leaves a 301d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // member of reference type uninitialized, the program is 302d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // ill-formed. 303d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Loc, diag::err_init_reference_member_uninitialized) 304d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << Field->getType() 305d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor << ILE->getSyntacticForm()->getSourceRange(); 306d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor SemaRef.Diag(Field->getLocation(), 307d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor diag::note_uninit_reference_member); 308d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 309d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 310d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 311dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 312d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 313d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor true); 314d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitializationSequence InitSeq(SemaRef, MemberEntity, Kind, 0, 0); 315d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (!InitSeq) { 316d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor InitSeq.Diagnose(SemaRef, MemberEntity, Kind, 0, 0); 317d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 318d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 319d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 320dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 32160d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult MemberInit 322f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, MemberEntity, Kind, MultiExprArg()); 323d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (MemberInit.isInvalid()) { 324d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor hadError = true; 325d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor return; 326d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 327dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 328d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) { 329d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Do nothing 330d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (Init < NumInits) { 331d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->setInit(Init, MemberInit.takeAs<Expr>()); 3327491c499e826682e128a400038361ebcbde30eecSebastian Redl } else if (InitSeq.isConstructorInitialization()) { 333d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Value-initialization requires a constructor call, so 334d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // extend the initializer list to include the constructor 335d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // call and make a note that we'll need to take another pass 336d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // through the initializer list. 337709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek ILE->updateInit(SemaRef.Context, Init, MemberInit.takeAs<Expr>()); 338d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor RequiresSecondPass = true; 339d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 340d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } else if (InitListExpr *InnerILE 341d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor = dyn_cast<InitListExpr>(ILE->getInit(Init))) 342dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(MemberEntity, InnerILE, 343dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi RequiresSecondPass); 344d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor} 345d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 3464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Recursively replaces NULL values within the given initializer list 3474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// with expressions that perform value-initialization of the 3484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// appropriate type. 349dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 350cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::FillInValueInitializations(const InitializedEntity &Entity, 351cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitListExpr *ILE, 352cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool &RequiresSecondPass) { 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((ILE->getType() != SemaRef.Context.VoidTy) && 354930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor "Should not have void type"); 35587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor SourceLocation Loc = ILE->getSourceRange().getBegin(); 35687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (ILE->getSyntacticForm()) 35787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor Loc = ILE->getSyntacticForm()->getSourceRange().getBegin(); 3581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3596217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) { 360d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion() && 361d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ILE->getInitializedFieldInUnion()) 362d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(0, ILE->getInitializedFieldInUnion(), 363d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Entity, ILE, RequiresSecondPass); 364d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor else { 365d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor unsigned Init = 0; 366d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor for (RecordDecl::field_iterator 367d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field = RType->getDecl()->field_begin(), 368d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FieldEnd = RType->getDecl()->field_end(); 369d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor Field != FieldEnd; ++Field) { 370d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (Field->isUnnamedBitfield()) 371d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor continue; 372d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 373d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 37487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 37587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 376d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor FillInValueInitForField(Init, *Field, Entity, ILE, RequiresSecondPass); 377d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (hadError) 378cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 379cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 380d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor ++Init; 381d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor 382d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor // Only look at the first initialization of a union. 383d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor if (RType->getDecl()->isUnion()) 384d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor break; 385d6d37dee48cfc5bbcc998bd9d151e4fb3a9437e8Douglas Gregor } 3864c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 3874c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3884c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 3891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 3914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType ElementType; 3921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 393cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializedEntity ElementEntity = Entity; 39487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumInits = ILE->getNumInits(); 39587fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned NumElements = NumInits; 3960820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner if (const ArrayType *AType = SemaRef.Context.getAsArrayType(ILE->getType())) { 3974c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = AType->getElementType(); 39887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) 39987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = CAType->getSize().getZExtValue(); 400dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 401cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 402183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = ILE->getType()->getAs<VectorType>()) { 4034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = VType->getElementType(); 40487fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor NumElements = VType->getNumElements(); 405dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, 406cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 0, Entity); 4071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else 4084c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ElementType = ILE->getType(); 4091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 410dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 41187fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor for (unsigned Init = 0; Init != NumElements; ++Init) { 41216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (hadError) 41316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor return; 41416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor 415d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement || 416d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson ElementEntity.getKind() == InitializedEntity::EK_VectorElement) 417cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor ElementEntity.setElementIndex(Init); 418cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 41921f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis Expr *InitExpr = (Init < NumInits ? ILE->getInit(Init) : 0); 42021f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis if (!InitExpr && !ILE->hasArrayFiller()) { 421cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, 422cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor true); 423cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitializationSequence InitSeq(SemaRef, ElementEntity, Kind, 0, 0); 424cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (!InitSeq) { 425cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor InitSeq.Diagnose(SemaRef, ElementEntity, Kind, 0, 0); 42687fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor hadError = true; 42787fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor return; 42887fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor } 42987fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor 43060d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult ElementInit 431f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall = InitSeq.Perform(SemaRef, ElementEntity, Kind, MultiExprArg()); 432cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (ElementInit.isInvalid()) { 43316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor hadError = true; 434cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor return; 435cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 436cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor 437cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor if (hadError) { 438cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor // Do nothing 439cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } else if (Init < NumInits) { 4403e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4413e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis // of the "holes" in the array. 4423e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) 4433e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4443e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis else 4453e8dc2ac8926dfbebd8f2f6b74ceba4befccd4d2Argyrios Kyrtzidis ILE->setInit(Init, ElementInit.takeAs<Expr>()); 4464423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } else { 4474423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // For arrays, just set the expression used for value-initialization 4484423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // of the rest of elements and exit. 4494423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) { 4504423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->setArrayFiller(ElementInit.takeAs<Expr>()); 4514423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis return; 4524423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 4534423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis 4547491c499e826682e128a400038361ebcbde30eecSebastian Redl if (InitSeq.isConstructorInitialization()) { 4554423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // Value-initialization requires a constructor call, so 4564423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // extend the initializer list to include the constructor 4574423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // call and make a note that we'll need to take another pass 4584423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis // through the initializer list. 4594423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis ILE->updateInit(SemaRef.Context, Init, ElementInit.takeAs<Expr>()); 4604423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis RequiresSecondPass = true; 4614423ac0282acb8ba801eb05b38712438dc0c1e3eArgyrios Kyrtzidis } 462cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 463ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else if (InitListExpr *InnerILE 46421f77cd0c3da8a1dbaf6245cae43baf4c0b80ea4Argyrios Kyrtzidis = dyn_cast_or_null<InitListExpr>(InitExpr)) 465cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(ElementEntity, InnerILE, RequiresSecondPass); 4664c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 4674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 4684c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 46968355a57bb9d5daccd3fc73e92370ba2b1a6eafbChris Lattner 470cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas GregorInitListChecker::InitListChecker(Sema &S, const InitializedEntity &Entity, 47114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *IL, QualType &T, 472c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl bool VerifyOnly, bool AllowBraceElision) 473b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith : SemaRef(S), VerifyOnly(VerifyOnly), AllowBraceElision(AllowBraceElision) { 4740cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff hadError = false; 475c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 476b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman unsigned newIndex = 0; 4774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FullyStructuredList 479ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor = getStructuredSubobjectInit(IL, newIndex, T, 0, 0, IL->getSourceRange()); 480dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckExplicitInitList(Entity, IL, T, newIndex, 48146f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson FullyStructuredList, newStructuredIndex, 482eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor /*TopLevelObject=*/true); 483c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 48414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && !VerifyOnly) { 485cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor bool RequiresSecondPass = false; 486cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor FillInValueInitializations(Entity, FullyStructuredList, RequiresSecondPass); 48716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor if (RequiresSecondPass && !hadError) 488dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FillInValueInitializations(Entity, FullyStructuredList, 489cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor RequiresSecondPass); 490cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor } 4910cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 4920cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 4930cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numArrayElements(QualType DeclType) { 494638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // FIXME: use a proper constant 495638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman int maxElements = 0x7FFFFFFF; 496c63a1f276f7b324fd9a4be82098b1c8f7bf30733Chris Lattner if (const ConstantArrayType *CAT = 4970820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getAsConstantArrayType(DeclType)) { 4980cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = static_cast<int>(CAT->getSize().getZExtValue()); 4990cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 5000cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return maxElements; 5010cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5020cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5030cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroffint InitListChecker::numStructUnionElements(QualType DeclType) { 5046217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *structDecl = DeclType->getAs<RecordType>()->getDecl(); 5054c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor int InitializableMembers = 0; 5061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (RecordDecl::field_iterator 50717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = structDecl->field_begin(), 50817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = structDecl->field_end(); 5094c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Field != FieldEnd; ++Field) { 510d61db33331c264d6361283602b248a7423040597Douglas Gregor if (!Field->isUnnamedBitfield()) 5114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++InitializableMembers; 5124c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 51339ba4aeca296b1c9f04bde7d9d3cbbf129f1abd3Argyrios Kyrtzidis if (structDecl->isUnion()) 514f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return std::min(InitializableMembers, 1); 515f84eda37251c679e2f20343c47a4a3586d9a8e21Eli Friedman return InitializableMembers - structDecl->hasFlexibleArrayMember(); 5160cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5170cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5188ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckImplicitInitList(const InitializedEntity &Entity, 519987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson InitListExpr *ParentIList, 5204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType T, unsigned &Index, 5214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 522629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman unsigned &StructuredIndex) { 5230cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff int maxElements = 0; 5241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5250cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (T->isArrayType()) 5260cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numArrayElements(T); 527fb87b89fc9eb103e19fb8e4b925c23f0bd091b99Douglas Gregor else if (T->isRecordType()) 5280cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff maxElements = numStructUnionElements(T); 529b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman else if (T->isVectorType()) 530183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall maxElements = T->getAs<VectorType>()->getNumElements(); 5310cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff else 532b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("CheckImplicitInitList(): Illegal type"); 533b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 534402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman if (maxElements == 0) { 53514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 53614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(ParentIList->getInit(Index)->getLocStart(), 53714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_implicit_empty_initializer); 5384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 539402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman hadError = true; 540402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman return; 541402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman } 542402256fc665ba179873ffcb4d630e28cbea42f27Eli Friedman 5434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Build a structured initializer list corresponding to this subobject. 5444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredSubobjectInitList 5451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = getStructuredSubobjectInit(ParentIList, Index, T, StructuredList, 5461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredIndex, 547ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor SourceRange(ParentIList->getInit(Index)->getSourceRange().getBegin(), 548ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor ParentIList->getSourceRange().getEnd())); 5494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredSubobjectInitIndex = 0; 5504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 5514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Check the element types and build the structural subobject. 55287fd703e097c27d63479cb83b687d4000a22bbb1Douglas Gregor unsigned StartIndex = Index; 553dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, ParentIList, T, 554987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 5551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredSubobjectInitList, 556629f118e6928f69178fab8fad6ff755b33a69f42Eli Friedman StructuredSubobjectInitIndex); 557c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl 558c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (VerifyOnly) { 559c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (!AllowBraceElision && (T->isArrayType() || T->isRecordType())) 560c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl hadError = true; 561c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl } else { 56214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->setType(T); 56314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 564c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl unsigned EndIndex = (Index == StartIndex? StartIndex : Index - 1); 56514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the structured sub-object initializer so that it's ending 56614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // range corresponds with the end of the last initializer it used. 56714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (EndIndex < ParentIList->getNumInits()) { 56814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceLocation EndLoc 56914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = ParentIList->getInit(EndIndex)->getSourceRange().getEnd(); 57014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->setRBraceLoc(EndLoc); 57114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 57214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 573c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl // Complain about missing braces. 57414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (T->isArrayType() || T->isRecordType()) { 57514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(StructuredSubobjectInitList->getLocStart(), 576c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl AllowBraceElision ? diag::warn_missing_braces : 577c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl diag::err_missing_braces) 57814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << StructuredSubobjectInitList->getSourceRange() 57914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << FixItHint::CreateInsertion( 58014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredSubobjectInitList->getLocStart(), "{") 58114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << FixItHint::CreateInsertion( 58214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PP.getLocForEndOfToken( 583dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi StructuredSubobjectInitList->getLocEnd()), 58414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "}"); 585c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl if (!AllowBraceElision) 586c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl hadError = true; 58714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 5881e1d396dc55002a2a6355048db542a38b5137002Tanya Lattner } 5890cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 5900cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 5918ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckExplicitInitList(const InitializedEntity &Entity, 59246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType &T, 5934c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 5944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 595eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 596eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 597c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman assert(IList->isExplicit() && "Illegal Implicit InitListExpr"); 59814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 59914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SyntacticToSemantic[IList] = StructuredList; 60014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setSyntacticForm(IList); 60114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 602dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckListElementTypes(Entity, IList, T, /*SubobjectIsDesignatorContext=*/true, 60346f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson Index, StructuredList, StructuredIndex, TopLevelObject); 60414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 60514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType ExprTy = T.getNonLValueExprType(SemaRef.Context); 60614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setType(ExprTy); 60714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setType(ExprTy); 60814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 609638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (hadError) 610638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 611c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman 612638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman if (Index < IList->getNumInits()) { 613c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman // We have leftover initializers 61414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 61514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (SemaRef.getLangOptions().CPlusPlus || 61614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl (SemaRef.getLangOptions().OpenCL && 61714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getType()->isVectorType())) { 61814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 61914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 62014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 62114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 62214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 623e540858b289b23653bcb23646f135729203635cbEli Friedman if (StructuredIndex == 1 && 624e540858b289b23653bcb23646f135729203635cbEli Friedman IsStringInit(StructuredList->getInit(0), T, SemaRef.Context)) { 6257c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers_in_char_array_initializer; 626e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 6277c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor DK = diag::err_excess_initializers_in_char_array_initializer; 628e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 629e540858b289b23653bcb23646f135729203635cbEli Friedman } 630bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman // Special-case 6310820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 632dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << IList->getInit(Index)->getSourceRange(); 633d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman } else if (!T->isIncompleteType()) { 634b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // Don't complain for incomplete types, since we'll get an error 635b574e5630d66629ccc8f2432e60b59ae42f1f363Douglas Gregor // elsewhere 636eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType CurrentObjectType = StructuredList->getType(); 6371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int initKind = 638eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isArrayType()? 0 : 639eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isVectorType()? 1 : 640eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isScalarType()? 2 : 641eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor CurrentObjectType->isUnionType()? 3 : 642eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 4; 6437c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 6447c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor unsigned DK = diag::warn_excess_initializers; 645e540858b289b23653bcb23646f135729203635cbEli Friedman if (SemaRef.getLangOptions().CPlusPlus) { 646e540858b289b23653bcb23646f135729203635cbEli Friedman DK = diag::err_excess_initializers; 6470863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman hadError = true; 6480863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman } 6490863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman if (SemaRef.getLangOptions().OpenCL && initKind == 1) { 6500863452c21e3e6da5b2613fd455495486c1ad5dfNate Begeman DK = diag::err_excess_initializers; 651e540858b289b23653bcb23646f135729203635cbEli Friedman hadError = true; 652e540858b289b23653bcb23646f135729203635cbEli Friedman } 6537c53ca6e03833adab4465462b7d5c888741b715dDouglas Gregor 6540820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getInit(Index)->getLocStart(), DK) 655eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor << initKind << IList->getInit(Index)->getSourceRange(); 656c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 657c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } 658cda25a977e4b7fe4e080b87586410eaeab7b62f6Eli Friedman 65914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && T->isScalarType() && IList->getNumInits() == 1 && 66014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !TopLevelObject) 6610820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), diag::warn_braces_around_scalar_init) 662a3a835149ed4b183e3b009a1f94a6123779d696bDouglas Gregor << IList->getSourceRange() 663849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocStart()) 664849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(IList->getLocEnd()); 6650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 6660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 6678ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, 66846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 6691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType &DeclType, 67087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool SubobjectIsDesignatorContext, 6714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 6724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 673eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 674eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 6750c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (DeclType->isAnyComplexType() && SubobjectIsDesignatorContext) { 6760c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Explicitly braced initializer for complex type can be real+imaginary 6770c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // parts. 6780c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckComplexType(Entity, IList, DeclType, Index, 6790c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 6800c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (DeclType->isScalarType()) { 68146f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckScalarType(Entity, IList, DeclType, Index, 68246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 683c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (DeclType->isVectorType()) { 684dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckVectorType(Entity, IList, DeclType, Index, 68546f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson StructuredList, StructuredIndex); 686d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor } else if (DeclType->isAggregateType()) { 687d7eb846aaf5ee4a8d22c3cd0796d1e7229d46013Douglas Gregor if (DeclType->isRecordType()) { 6886217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 6892bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson CheckStructUnionTypes(Entity, IList, DeclType, RD->field_begin(), 6904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubobjectIsDesignatorContext, Index, 691eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 692eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor TopLevelObject); 69387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } else if (DeclType->isArrayType()) { 694f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor llvm::APSInt Zero( 6950820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), 696f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor false); 697dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, DeclType, Zero, 698784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson SubobjectIsDesignatorContext, Index, 6994c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 700ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else 701b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("Aggregate that isn't a structure or array?!"); 702613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { 703613535273b90dc5cbd0f9fa056dedc93801ea35aSteve Naroff // This type is invalid, issue a diagnostic. 7044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 70514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 70614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 70714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 708d8dc2100487640d8f5ce53201fdcfac7b5ca32b2Eli Friedman hadError = true; 709930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isRecordType()) { 710930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init]p14: 711930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // [...] If the class is an aggregate (8.5.1), and the initializer 712930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // is a brace-enclosed list, see 8.5.1. 713930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // 714930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Note: 8.5.1 is handled below; here, we diagnose the case where 715930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // we have an initializer list and a destination type that is not 716930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // an aggregate. 717930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // FIXME: In C++0x, this is yet another form of initialization. 71814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 71914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 72014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << IList->getSourceRange(); 721930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 722930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (DeclType->isReferenceType()) { 7238ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckReferenceType(Entity, IList, DeclType, Index, 7248ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 725c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (DeclType->isObjCObjectType()) { 72614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 72714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_objc_class) 72814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7294d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7300cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } else { 73114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 73214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_illegal_initializer_type) 73314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType; 7344d9e7388ccdfdab97f92caac5db9b87a530742f4Douglas Gregor hadError = true; 7350cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 7360cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 7370cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 7388ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckSubElementType(const InitializedEntity &Entity, 73946f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, 7401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType ElemType, 7414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 7424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 7434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 7446fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor Expr *expr = IList->getInit(Index); 745c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { 746c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman unsigned newIndex = 0; 7474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned newStructuredIndex = 0; 7481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *newStructuredList 7494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor = getStructuredSubobjectInit(IList, Index, ElemType, 7504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex, 7514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SubInitList->getSourceRange()); 75246f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson CheckExplicitInitList(Entity, SubInitList, ElemType, newIndex, 7534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor newStructuredList, newStructuredIndex); 7544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 7554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 756fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 757c9c0ea6576666eb7e96508f6b8ce2b4d33af3f02Eli Friedman } else if (ElemType->isScalarType()) { 758fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckScalarType(Entity, IList, ElemType, Index, 759fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 760930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } else if (ElemType->isReferenceType()) { 761fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return CheckReferenceType(Entity, IList, ElemType, Index, 762fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredList, StructuredIndex); 763fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 764930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 765fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (const ArrayType *arrayType = SemaRef.Context.getAsArrayType(ElemType)) { 766fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // arrayType can be incomplete if we're initializing a flexible 767fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // array member. There's nothing we can do with the completed 768fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // type here, though. 769930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 770fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Expr *Str = IsStringInit(expr, arrayType, SemaRef.Context)) { 7718a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman if (!VerifyOnly) { 7728a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, ElemType, arrayType, SemaRef); 7738a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 7748a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman } 775fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 776fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 777930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 778930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 779fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization. 780fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 781fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else if (SemaRef.getLangOptions().CPlusPlus) { 782930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // C++ [dcl.init.aggr]p12: 783fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // All implicit type conversions (clause 4) are considered when 7845d3d41d0873d51b405972baf38e1f3a7ef5b49e0Sebastian Redl // initializing the aggregate member with an initializer from 785fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // an initializer-list. If the initializer can initialize a 786fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // member, the member is initialized. [...] 787fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 788fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // FIXME: Better EqualLoc? 789fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind Kind = 790fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationKind::CreateCopy(expr->getLocStart(), SourceLocation()); 791fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall InitializationSequence Seq(SemaRef, Entity, Kind, &expr, 1); 792fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 793fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if (Seq) { 79414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 795b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith ExprResult Result = 796b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Seq.Perform(SemaRef, Entity, Kind, MultiExprArg(&expr, 1)); 797b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith if (Result.isInvalid()) 798b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith hadError = true; 79914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 80014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 801b6f8d28411955bc5349217a657ad5f274f72293aRichard Smith Result.takeAs<Expr>()); 80214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 803fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 804fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 805fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 806fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 807fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 808fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 809fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C99 6.7.8p13: 8101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 811fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // The initializer for a structure or union object that has 812fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // automatic storage duration shall be either an initializer 813fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // list as described below, or a single expression that has 814fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // compatible structure or union type. In the latter case, the 815fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // initial value of the object, including unnamed members, is 816fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // that of the expression. 817429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult ExprRes = SemaRef.Owned(expr); 818fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall if ((ElemType->isRecordType() || ElemType->isVectorType()) && 81914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.CheckSingleAssignmentConstraints(ElemType, ExprRes, 82014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !VerifyOnly) 821fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall == Sema::Compatible) { 822429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 823429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 824429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley else { 825429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes = SemaRef.DefaultFunctionArrayLvalueConversion(ExprRes.take()); 826429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ExprRes.isInvalid()) 827429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley hadError = true; 828429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 829429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley UpdateStructuredListElement(StructuredList, StructuredIndex, 830429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.takeAs<Expr>()); 831930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 832fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall return; 833930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 834429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprRes.release(); 835fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // Fall through for subaggregate initialization 836fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } 837fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall 838fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // C++ [dcl.init.aggr]p12: 839fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // 840fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // [...] Otherwise, if the member is itself a non-empty 841fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // subaggregate, brace elision is assumed and the initializer is 842fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // considered for the initialization of the first member of 843fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall // the subaggregate. 84461b4bc80e943578ae855810918a1dc9697dbd15bTanya Lattner if (!SemaRef.getLangOptions().OpenCL && 84561b4bc80e943578ae855810918a1dc9697dbd15bTanya Lattner (ElemType->isAggregateType() || ElemType->isVectorType())) { 846fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, 847fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall StructuredIndex); 848fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 849fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall } else { 85014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 85114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // We cannot initialize this element, so let 85214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // PerformCopyInitialization produce the appropriate diagnostic. 85314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, SourceLocation(), 85414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 85514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 85614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 857fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall hadError = true; 858fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++Index; 859fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall ++StructuredIndex; 860930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 861b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman} 862b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman 8630c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedmanvoid InitListChecker::CheckComplexType(const InitializedEntity &Entity, 8640c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *IList, QualType DeclType, 8650c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &Index, 8660c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitListExpr *StructuredList, 8670c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman unsigned &StructuredIndex) { 8680c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(Index == 0 && "Index in explicit init list must be zero"); 8690c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8700c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // As an extension, clang supports complex initializers, which initialize 8710c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number component-wise. When an explicit initializer list for 8720c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // a complex number contains two two initializers, this extension kicks in: 8730c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // it exepcts the initializer list to contain two elements convertible to 8740c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the element type of the complex type. The first element initializes 8750c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // the real part, and the second element intitializes the imaginary part. 8760c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8770c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman if (IList->getNumInits() != 2) 8780c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman return CheckScalarType(Entity, IList, DeclType, Index, StructuredList, 8790c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredIndex); 8800c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // This is an extension in C. (The builtin _Complex type does not exist 8820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // in the C++ standard.) 88314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.getLangOptions().CPlusPlus && !VerifyOnly) 8840c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman SemaRef.Diag(IList->getLocStart(), diag::ext_complex_component_init) 8850c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman << IList->getSourceRange(); 8860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8870c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman // Initialize the complex number. 8880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman QualType elementType = DeclType->getAs<ComplexType>()->getElementType(); 8890c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity ElementEntity = 8900c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 8910c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8920c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman for (unsigned i = 0; i < 2; ++i) { 8930c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman ElementEntity.setElementIndex(Index); 8940c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman CheckSubElementType(ElementEntity, IList, elementType, Index, 8950c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman StructuredList, StructuredIndex); 8960c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } 8970c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman} 8980c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 8990c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman 9008ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckScalarType(const InitializedEntity &Entity, 90146f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 9026fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned &Index, 9034c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 9044c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 905b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Index >= IList->getNumInits()) { 9066b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith if (!VerifyOnly) 9076b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith SemaRef.Diag(IList->getLocStart(), 9086b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith SemaRef.getLangOptions().CPlusPlus0x ? 9096b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::warn_cxx98_compat_empty_scalar_initializer : 9106b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith diag::err_empty_scalar_initializer) 9116b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith << IList->getSourceRange(); 9126b13022faef260c8f49d04310f4a2c0a57f9103bRichard Smith hadError = !SemaRef.getLangOptions().CPlusPlus0x; 9134c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 9144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 915bb504d3a63e0e4b2439900ba6d77b620fb6de857Eli Friedman return; 9160cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 917b934c2d77144471f35c5ebae9e925b056dac8112John McCall 918b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *expr = IList->getInit(Index); 919b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { 92014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 92114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(SubIList->getLocStart(), 92214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::warn_many_braces_around_scalar_init) 92314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SubIList->getSourceRange(); 924b934c2d77144471f35c5ebae9e925b056dac8112John McCall 925b934c2d77144471f35c5ebae9e925b056dac8112John McCall CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, 926b934c2d77144471f35c5ebae9e925b056dac8112John McCall StructuredIndex); 927b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 928b934c2d77144471f35c5ebae9e925b056dac8112John McCall } else if (isa<DesignatedInitExpr>(expr)) { 92914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 93014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(expr->getSourceRange().getBegin(), 93114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_for_scalar_init) 93214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << expr->getSourceRange(); 933b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; 934b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 935b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 936b934c2d77144471f35c5ebae9e925b056dac8112John McCall return; 937b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 938b934c2d77144471f35c5ebae9e925b056dac8112John McCall 93914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 94014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 94114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 94214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 94314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 94414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 94514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 946b934c2d77144471f35c5ebae9e925b056dac8112John McCall ExprResult Result = 947b934c2d77144471f35c5ebae9e925b056dac8112John McCall SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 948191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(expr), 949191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 950b934c2d77144471f35c5ebae9e925b056dac8112John McCall 951b934c2d77144471f35c5ebae9e925b056dac8112John McCall Expr *ResultExpr = 0; 952b934c2d77144471f35c5ebae9e925b056dac8112John McCall 953b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (Result.isInvalid()) 954b934c2d77144471f35c5ebae9e925b056dac8112John McCall hadError = true; // types weren't compatible. 955b934c2d77144471f35c5ebae9e925b056dac8112John McCall else { 956b934c2d77144471f35c5ebae9e925b056dac8112John McCall ResultExpr = Result.takeAs<Expr>(); 957dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 958b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (ResultExpr != expr) { 959b934c2d77144471f35c5ebae9e925b056dac8112John McCall // The type was promoted, update initializer list. 960b934c2d77144471f35c5ebae9e925b056dac8112John McCall IList->setInit(Index, ResultExpr); 961b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 962b934c2d77144471f35c5ebae9e925b056dac8112John McCall } 963b934c2d77144471f35c5ebae9e925b056dac8112John McCall if (hadError) 964b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++StructuredIndex; 965b934c2d77144471f35c5ebae9e925b056dac8112John McCall else 966b934c2d77144471f35c5ebae9e925b056dac8112John McCall UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); 967b934c2d77144471f35c5ebae9e925b056dac8112John McCall ++Index; 9680cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 9690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 9708ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckReferenceType(const InitializedEntity &Entity, 9718ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitListExpr *IList, QualType DeclType, 972930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &Index, 973930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor InitListExpr *StructuredList, 974930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor unsigned &StructuredIndex) { 97514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Index >= IList->getNumInits()) { 976390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: It would be wonderful if we could point at the actual member. In 977390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // general, it would be useful to pass location information down the stack, 978390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // so that we know the location (or decl) of the "current object" being 979390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // initialized. 98014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 98114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), 98214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_init_reference_member_uninitialized) 98314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType 98414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IList->getSourceRange(); 985930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor hadError = true; 986930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++Index; 987930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor ++StructuredIndex; 988930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor return; 989930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 99014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 99114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Expr *expr = IList->getInit(Index); 99213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (isa<InitListExpr>(expr) && !SemaRef.getLangOptions().CPlusPlus0x) { 99314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 99414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IList->getLocStart(), diag::err_init_non_aggr_init_list) 99514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DeclType << IList->getSourceRange(); 99614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 99714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 99814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 99914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 100014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 100114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 100214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 100314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(expr))) 100414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 100514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 100614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 100714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 100814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 100914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ExprResult Result = 101014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.PerformCopyInitialization(Entity, expr->getLocStart(), 101114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Owned(expr), 101214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl /*TopLevelOfInitList=*/true); 101314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (Result.isInvalid()) 101514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 101614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 101714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl expr = Result.takeAs<Expr>(); 101814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->setInit(Index, expr); 101914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 102014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (hadError) 102114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++StructuredIndex; 102214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 102314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, expr); 102414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 1025930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor} 1026930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 10278ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckVectorType(const InitializedEntity &Entity, 102846f4659f9d012ca2e2050c1fc39a59666114b3f9Anders Carlsson InitListExpr *IList, QualType DeclType, 10294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 10304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 10314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 103220e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *VT = DeclType->getAs<VectorType>(); 103320e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned maxElements = VT->getNumElements(); 103420e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numEltsInit = 0; 103520e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType elementType = VT->getElementType(); 103620e047abc5f19dc948436c0fb891450d9cd40667John McCall 10373ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Make sure the element type can be value-initialized. 10393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10403ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 10413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity)); 10423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl return; 10433ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 10443ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 104520e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!SemaRef.getLangOptions().OpenCL) { 104620e047abc5f19dc948436c0fb891450d9cd40667John McCall // If the initializing element is a vector, try to copy-initialize 104720e047abc5f19dc948436c0fb891450d9cd40667John McCall // instead of breaking it apart (which is doomed to failure anyway). 104820e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *Init = IList->getInit(Index); 104920e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!isa<InitListExpr>(Init) && Init->getType()->isVectorType()) { 105014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) { 105114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!SemaRef.CanPerformCopyInitialization(Entity, SemaRef.Owned(Init))) 105214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl hadError = true; 105314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ++Index; 105414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 105514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 105614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 105720e047abc5f19dc948436c0fb891450d9cd40667John McCall ExprResult Result = 105820e047abc5f19dc948436c0fb891450d9cd40667John McCall SemaRef.PerformCopyInitialization(Entity, Init->getLocStart(), 1059191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SemaRef.Owned(Init), 1060191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin /*TopLevelOfInitList=*/true); 106120e047abc5f19dc948436c0fb891450d9cd40667John McCall 106220e047abc5f19dc948436c0fb891450d9cd40667John McCall Expr *ResultExpr = 0; 106320e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Result.isInvalid()) 106420e047abc5f19dc948436c0fb891450d9cd40667John McCall hadError = true; // types weren't compatible. 106520e047abc5f19dc948436c0fb891450d9cd40667John McCall else { 106620e047abc5f19dc948436c0fb891450d9cd40667John McCall ResultExpr = Result.takeAs<Expr>(); 1067dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 106820e047abc5f19dc948436c0fb891450d9cd40667John McCall if (ResultExpr != Init) { 106920e047abc5f19dc948436c0fb891450d9cd40667John McCall // The type was promoted, update initializer list. 107020e047abc5f19dc948436c0fb891450d9cd40667John McCall IList->setInit(Index, ResultExpr); 10712ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 10722ef13e5abef0570a9f567b4671367275c05d4d34Nate Begeman } 107320e047abc5f19dc948436c0fb891450d9cd40667John McCall if (hadError) 107420e047abc5f19dc948436c0fb891450d9cd40667John McCall ++StructuredIndex; 107520e047abc5f19dc948436c0fb891450d9cd40667John McCall else 107614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, 107714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl ResultExpr); 107820e047abc5f19dc948436c0fb891450d9cd40667John McCall ++Index; 107920e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 10800cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 10811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108220e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 108320e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1084dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 108520e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { 108620e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 10873ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Index >= IList->getNumInits()) { 10883ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 10893ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(ElementEntity); 109020e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 10913ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 1092dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 109320e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 109420e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 109520e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 109620e047abc5f19dc948436c0fb891450d9cd40667John McCall } 109720e047abc5f19dc948436c0fb891450d9cd40667John McCall return; 109820e047abc5f19dc948436c0fb891450d9cd40667John McCall } 109920e047abc5f19dc948436c0fb891450d9cd40667John McCall 110020e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity ElementEntity = 110120e047abc5f19dc948436c0fb891450d9cd40667John McCall InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 1102dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 110320e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL initializers allows vectors to be constructed from vectors. 110420e047abc5f19dc948436c0fb891450d9cd40667John McCall for (unsigned i = 0; i < maxElements; ++i) { 110520e047abc5f19dc948436c0fb891450d9cd40667John McCall // Don't attempt to go past the end of the init list 110620e047abc5f19dc948436c0fb891450d9cd40667John McCall if (Index >= IList->getNumInits()) 110720e047abc5f19dc948436c0fb891450d9cd40667John McCall break; 1108dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 110920e047abc5f19dc948436c0fb891450d9cd40667John McCall ElementEntity.setElementIndex(Index); 111020e047abc5f19dc948436c0fb891450d9cd40667John McCall 111120e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType IType = IList->getInit(Index)->getType(); 111220e047abc5f19dc948436c0fb891450d9cd40667John McCall if (!IType->isVectorType()) { 111320e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, elementType, Index, 111420e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 111520e047abc5f19dc948436c0fb891450d9cd40667John McCall ++numEltsInit; 111620e047abc5f19dc948436c0fb891450d9cd40667John McCall } else { 111720e047abc5f19dc948436c0fb891450d9cd40667John McCall QualType VecType; 111820e047abc5f19dc948436c0fb891450d9cd40667John McCall const VectorType *IVT = IType->getAs<VectorType>(); 111920e047abc5f19dc948436c0fb891450d9cd40667John McCall unsigned numIElts = IVT->getNumElements(); 1120dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 112120e047abc5f19dc948436c0fb891450d9cd40667John McCall if (IType->isExtVectorType()) 112220e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); 112320e047abc5f19dc948436c0fb891450d9cd40667John McCall else 112420e047abc5f19dc948436c0fb891450d9cd40667John McCall VecType = SemaRef.Context.getVectorType(elementType, numIElts, 1125e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson IVT->getVectorKind()); 112620e047abc5f19dc948436c0fb891450d9cd40667John McCall CheckSubElementType(ElementEntity, IList, VecType, Index, 112720e047abc5f19dc948436c0fb891450d9cd40667John McCall StructuredList, StructuredIndex); 112820e047abc5f19dc948436c0fb891450d9cd40667John McCall numEltsInit += numIElts; 112920e047abc5f19dc948436c0fb891450d9cd40667John McCall } 11300cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 113120e047abc5f19dc948436c0fb891450d9cd40667John McCall 113220e047abc5f19dc948436c0fb891450d9cd40667John McCall // OpenCL requires all elements to be initialized. 11333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (numEltsInit != maxElements) { 11343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!VerifyOnly) 11353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SemaRef.Diag(IList->getSourceRange().getBegin(), 11363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl diag::err_vector_incorrect_num_initializers) 11373ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl << (numEltsInit < maxElements) << maxElements << numEltsInit; 11383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl hadError = true; 11393ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 11400cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 11410cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 11428ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckArrayType(const InitializedEntity &Entity, 1143784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson InitListExpr *IList, QualType &DeclType, 114487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt elementIndex, 11451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 11464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 11474c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 11484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex) { 1149ce6c9b7da219c8640a0559f75770cfc6622de083John McCall const ArrayType *arrayType = SemaRef.Context.getAsArrayType(DeclType); 1150ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 11510cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // Check for the special-case of initializing an array with a string. 11520cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff if (Index < IList->getNumInits()) { 1153ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (Expr *Str = IsStringInit(IList->getInit(Index), arrayType, 115479e079d3caecc0ddd7128dc038d3f8960bbab62eChris Lattner SemaRef.Context)) { 11554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We place the string literal directly into the resulting 11564c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initializer list. This is the only place where the structure 11574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // of the structured initializer list doesn't match exactly, 11584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // because doing so would involve allocating one character 11594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // constant for each string. 116014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 11618a5d929268beeb69b654120fb0b4f8893ad230ebEli Friedman CheckStringInit(Str, DeclType, arrayType, SemaRef); 116214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl UpdateStructuredListElement(StructuredList, StructuredIndex, Str); 116314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, StructuredIndex); 116414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 11650cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff ++Index; 11660cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff return; 11670cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 11680cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1169ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(arrayType)) { 1170638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // Check for VLAs; in standard C it would be possible to check this 1171638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // earlier, but I don't know where clang accepts VLAs (gcc accepts 1172638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman // them in all sorts of strange places). 117314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 117414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(VAT->getSizeExpr()->getLocStart(), 117514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_variable_object_no_init) 117614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << VAT->getSizeExpr()->getSourceRange(); 1177638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman hadError = true; 11784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++Index; 11794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 1180638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman return; 1181638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman } 1182638e14413a4557c399fa2b7da2be5e4e9c1330a2Eli Friedman 118305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We might know the maximum number of elements in advance. 11844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor llvm::APSInt maxElements(elementIndex.getBitWidth(), 11854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor elementIndex.isUnsigned()); 118605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool maxElementsKnown = false; 1187ce6c9b7da219c8640a0559f75770cfc6622de083John McCall if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(arrayType)) { 118805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = CAT->getSize(); 11899f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extOrTrunc(maxElements.getBitWidth()); 1190e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 119105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElementsKnown = true; 119205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 119305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1194ce6c9b7da219c8640a0559f75770cfc6622de083John McCall QualType elementType = arrayType->getElementType(); 119505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 119605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 119705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 119887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 119987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 120087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 120187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 120287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 120387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 120487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. elementIndex will be 120587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // updated to be the next array element we'll initialize. 12069a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 12074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, 0, &elementIndex, Index, 1208eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, true, 1209eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) { 121005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 121187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor continue; 121287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 121387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 1214f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor if (elementIndex.getBitWidth() > maxElements.getBitWidth()) 12159f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad maxElements = maxElements.extend(elementIndex.getBitWidth()); 1216f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) 12179f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad elementIndex = elementIndex.extend(maxElements.getBitWidth()); 1218e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor elementIndex.setIsUnsigned(maxElements.isUnsigned()); 1219f6c717c3dca839dcd189b4a6fa46c8fe7a8bec1dDouglas Gregor 122087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If the array is of incomplete type, keep track of the number of 122187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // elements in the initializer. 122287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 122387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor maxElements = elementIndex; 122405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 122605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 122705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 122805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we know the maximum number of elements, and we've already 122905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // hit it, stop consuming elements in the initializer list. 123005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElementsKnown && elementIndex == maxElements) 12310cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff break; 123205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 12338ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity ElementEntity = 1234dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, 12358ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson Entity); 12368ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson // Check this element. 12378ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(ElementEntity, IList, elementType, Index, 12388ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 123905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++elementIndex; 124005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 124105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If the array is of incomplete type, keep track of the number of 124205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // elements in the initializer. 124305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (!maxElementsKnown && elementIndex > maxElements) 124405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor maxElements = elementIndex; 12450cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 124614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!hadError && DeclType->isIncompleteArrayType() && !VerifyOnly) { 12470cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff // If this is an incomplete array type, the actual type needs to 1248396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // be calculated here. 1249e3fa2de90ea1666bf4504b8fd557b09a57aac222Douglas Gregor llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); 125005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (maxElements == Zero) { 1251396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // Sizing an array implicitly to zero is not allowed by ISO C, 1252396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar // but is supported by GNU. 12530820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(IList->getLocStart(), 1254396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar diag::ext_typecheck_zero_array_size); 12550cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 1256396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar 12571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DeclType = SemaRef.Context.getConstantArrayType(elementType, maxElements, 1258396f0bfd4b2189452914893ce69f5fb068d0ec22Daniel Dunbar ArrayType::Normal, 0); 12590cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 12603ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!hadError && VerifyOnly) { 12613ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check if there are any members of the array that get value-initialized. 12623ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // If so, check if doing that is possible. 12633ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: This needs to detect holes left by designated initializers too. 12643ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (maxElementsKnown && elementIndex < maxElements) 12653ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable(InitializedEntity::InitializeElement( 12663ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl SemaRef.Context, 0, Entity)); 12673ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 12680cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 12690cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1270f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedmanbool InitListChecker::CheckFlexibleArrayInit(const InitializedEntity &Entity, 1271f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman Expr *InitExpr, 1272f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FieldDecl *Field, 1273f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman bool TopLevelObject) { 1274f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Handle GNU flexible array initializers. 1275f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman unsigned FlexArrayDiag; 1276f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (isa<InitListExpr>(InitExpr) && 1277f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman cast<InitListExpr>(InitExpr)->getNumInits() == 0) { 1278f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Empty flexible array init always allowed as an extension 1279f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 1280f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (SemaRef.getLangOptions().CPlusPlus) { 1281f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init in C++; it is not required for gcc 1282f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // compatibility, and it needs work to IRGen correctly in general. 1283f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1284f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (!TopLevelObject) { 1285f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on non-top-level object 1286f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1287f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (Entity.getKind() != InitializedEntity::EK_Variable) { 1288f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on anything which is not a variable. 1289f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1290f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else if (cast<VarDecl>(Entity.getDecl())->hasLocalStorage()) { 1291f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Disallow flexible array init on local variables. 1292f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::err_flexible_array_init; 1293f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } else { 1294f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Allow other cases. 1295f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman FlexArrayDiag = diag::ext_flexible_array_init; 1296f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman } 129714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 129814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 129914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(InitExpr->getSourceRange().getBegin(), 130014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl FlexArrayDiag) 130114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << InitExpr->getSourceRange().getBegin(); 130214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 130314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << Field; 130414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1305f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 1306f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman return FlexArrayDiag != diag::ext_flexible_array_init; 1307f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman} 1308f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman 13098ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlssonvoid InitListChecker::CheckStructUnionTypes(const InitializedEntity &Entity, 13102bbae5de98f486d03e10c039668182075b5569ddAnders Carlsson InitListExpr *IList, 13111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType DeclType, 131287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor RecordDecl::field_iterator Field, 13131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump bool SubobjectIsDesignatorContext, 13144c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &Index, 13154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 1316eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned &StructuredIndex, 1317eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 13186217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl* structDecl = DeclType->getAs<RecordType>()->getDecl(); 13191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1320b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // If the record is invalid, some of it's members are invalid. To avoid 1321b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman // confusion, we forgo checking the intializer for the entire record. 1322b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman if (structDecl->isInvalidDecl()) { 1323b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman hadError = true; 1324b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman return; 13251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 13263498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 13273498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor if (DeclType->isUnionType() && IList->getNumInits() == 0) { 13283ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Value-initialize the first named member of the union. 13293ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 13303ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (RecordDecl::field_iterator FieldEnd = RD->field_end(); 13313ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl Field != FieldEnd; ++Field) { 13323ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (Field->getDeclName()) { 13333ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly) 13343ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 13353ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeMember(*Field, &Entity)); 13363ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl else 133714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setInitializedFieldInUnion(*Field); 13383ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl break; 13393498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13403498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13413498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor return; 13423498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor } 13433498bdb9e9cb300de74c7b51c92608e2902b2348Douglas Gregor 134405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If structDecl is a forward declaration, this loop won't do 134505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // anything except look at designated initializers; That's okay, 134605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // because an error should get printed out elsewhere. It might be 134705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // worthwhile to skip over the rest of the initializer, though. 13486217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek RecordDecl *RD = DeclType->getAs<RecordType>()->getDecl(); 134917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator FieldEnd = RD->field_end(); 1350dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor bool InitializedSomething = false; 135180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall bool CheckForMissingFields = true; 135205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor while (Index < IList->getNumInits()) { 135305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Init = IList->getInit(Index); 135405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 135505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { 135687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If we're not the subobject that matches up with the '{' for 135787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the designator, we shouldn't be handling the 135887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designator. Return immediately. 135987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!SubobjectIsDesignatorContext) 136087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return; 136187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 136287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Handle this designated initializer. Field will be updated to 136387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the next field that we'll be initializing. 13649a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson if (CheckDesignatedInitializer(Entity, IList, DIE, 0, 13654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor DeclType, &Field, 0, Index, 1366eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, StructuredIndex, 1367eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, TopLevelObject)) 136805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor hadError = true; 136905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1370dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 137180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 137280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Disable check for missing fields when designators are used. 137380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // This matches gcc behaviour. 137480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall CheckForMissingFields = false; 137505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor continue; 137605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 137705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 137805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field == FieldEnd) { 137905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // We've run out of fields. We're done. 138044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor break; 138105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 138244b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 1383dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor // We've already initialized a member of a union. We're done. 1384dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor if (InitializedSomething && DeclType->isUnionType()) 1385dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor break; 1386dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor 138705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // If we've hit the flexible array member at the end, we're done. 138805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Field->getType()->isIncompleteArrayType()) 1389b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman break; 139044b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 13910bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (Field->isUnnamedBitfield()) { 13924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Don't initialize unnamed bitfields, e.g. "int : 20;" 139305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 1394b85f70719da9ce5a3ca9c801ee0748732e2660eeEli Friedman continue; 13950cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 139644b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 139754001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 139814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 139914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 140014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = !SemaRef.CanUseDecl(*Field); 140114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 140214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, 140314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IList->getInit(Index)->getLocStart()); 140414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 140554001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 140654001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Field; 140754001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor hadError = true; 140854001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor continue; 140914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 141054001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 14118ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 14128ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 14138ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14148ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 1415dfb5e597e033c8fa09c0e178bd93cfcdf060862eDouglas Gregor InitializedSomething = true; 14160bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor 141714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DeclType->isUnionType() && !VerifyOnly) { 14180bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor // Initialize the first field within the union. 14190bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor StructuredList->setInitializedFieldInUnion(*Field); 14200bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 142105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 142205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor ++Field; 14230cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff } 142444b4321feab46299d3f5cfd404680884752a0fcfDouglas Gregor 142580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Emit warnings for missing struct field initializers. 142614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && InitializedSomething && CheckForMissingFields && 142714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Field != FieldEnd && !Field->getType()->isIncompleteArrayType() && 142814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DeclType->isUnionType()) { 142980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // It is possible we have one or more unnamed bitfields remaining. 143080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall // Find first (if any) named field and emit warning. 143180639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall for (RecordDecl::field_iterator it = Field, end = RD->field_end(); 143280639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall it != end; ++it) { 143380639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall if (!it->isUnnamedBitfield()) { 143480639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall SemaRef.Diag(IList->getSourceRange().getEnd(), 143580639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall diag::warn_missing_field_initializers) << it->getName(); 143680639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall break; 143780639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143880639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 143980639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall } 144080639debfb2d90b2f1ffdbcd9a391f744cb0a393John McCall 14413ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // Check that any remaining fields can be value-initialized. 14423ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (VerifyOnly && Field != FieldEnd && !DeclType->isUnionType() && 14433ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl !Field->getType()->isIncompleteArrayType()) { 14443ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl // FIXME: Should check for holes left by designated initializers too. 14453ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl for (; Field != FieldEnd && !hadError; ++Field) { 14463ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl if (!Field->isUnnamedBitfield()) 14473ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl CheckValueInitializable( 14483ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl InitializedEntity::InitializeMember(*Field, &Entity)); 14493ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14503ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl } 14513ff5c86d409a55d0e64a28c07197ee3e791166c2Sebastian Redl 14521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || 1453a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor Index >= IList->getNumInits()) 1454eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return; 1455eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1456f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (CheckFlexibleArrayInit(Entity, IList->getInit(Index), *Field, 1457f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) { 1458eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor hadError = true; 1459a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor ++Index; 1460a6457963cf7ffe71498c408dd590d9d1acb9513cDouglas Gregor return; 1461eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1462eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 14638ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 14648ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1465dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 14668ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson if (isa<InitListExpr>(IList->getInit(Index))) 1467dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 14688ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson StructuredList, StructuredIndex); 14698ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson else 1470dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, 1471987dc6a3fa0917de269c9d60b7d4f21c68b8b09fAnders Carlsson StructuredList, StructuredIndex); 14720cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff} 14730cca749f64ff54476df3a4fc084821b8a8d712d5Steve Naroff 1474ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// \brief Expand a field designator that refers to a member of an 1475ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// anonymous struct or union into a series of field designators that 1476ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// refers to the field within the appropriate subobject. 1477ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor/// 1478ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregorstatic void ExpandAnonymousFieldDesignator(Sema &SemaRef, 14791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedInitExpr *DIE, 14801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned DesigIdx, 1481a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IndirectFieldDecl *IndirectField) { 1482ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor typedef DesignatedInitExpr::Designator Designator; 1483ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1484ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Build the replacement designators. 14855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Designator, 4> Replacements; 1486a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet for (IndirectFieldDecl::chain_iterator PI = IndirectField->chain_begin(), 1487a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet PE = IndirectField->chain_end(); PI != PE; ++PI) { 1488a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (PI + 1 == PE) 14891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Replacements.push_back(Designator((IdentifierInfo *)0, 1490ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getDotLoc(), 1491ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor DIE->getDesignator(DesigIdx)->getFieldLoc())); 1492ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor else 1493ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor Replacements.push_back(Designator((IdentifierInfo *)0, SourceLocation(), 1494ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor SourceLocation())); 1495a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(isa<FieldDecl>(*PI)); 1496a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Replacements.back().setField(cast<FieldDecl>(*PI)); 1497ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1498ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 1499ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // Expand the current designator into the set of replacement 1500ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // designators, so we have a full subobject path down to where the 1501ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // member of the anonymous struct/union is actually stored. 1502319d57f21600dd2c4d52ccc27bd12ce260b174e7Douglas Gregor DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], 1503ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor &Replacements[0] + Replacements.size()); 1504a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet} 15051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1506dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Given an implicit anonymous field, search the IndirectField that 1507a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet/// corresponds to FieldName. 1508a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichetstatic IndirectFieldDecl *FindIndirectFieldDesignator(FieldDecl *AnonField, 1509a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet IdentifierInfo *FieldName) { 1510a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet assert(AnonField->isAnonymousStructOrUnion()); 1511a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet Decl *NextDecl = AnonField->getNextDeclInContext(); 1512a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet while (IndirectFieldDecl *IF = dyn_cast<IndirectFieldDecl>(NextDecl)) { 1513a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (FieldName && FieldName == IF->getAnonField()->getIdentifier()) 1514a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return IF; 1515a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet NextDecl = NextDecl->getNextDeclInContext(); 1516ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1517a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet return 0; 1518ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor} 1519ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 152014b0c194b356a1204d081765b3e6699687bed97cSebastian Redlstatic DesignatedInitExpr *CloneDesignatedInitExpr(Sema &SemaRef, 152114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE) { 152214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned NumIndexExprs = DIE->getNumSubExprs() - 1; 152314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SmallVector<Expr*, 4> IndexExprs(NumIndexExprs); 152414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl for (unsigned I = 0; I < NumIndexExprs; ++I) 152514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl IndexExprs[I] = DIE->getSubExpr(I + 1); 152614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return DesignatedInitExpr::Create(SemaRef.Context, DIE->designators_begin(), 152714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->size(), IndexExprs.data(), 152814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl NumIndexExprs, DIE->getEqualOrColonLoc(), 152914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->usesGNUSyntax(), DIE->getInit()); 153014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl} 153114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1532425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainnamespace { 1533425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1534425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// Callback to only accept typo corrections that are for field members of 1535425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain// the given struct or union. 1536425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrainclass FieldInitializerValidatorCCC : public CorrectionCandidateCallback { 1537425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain public: 1538425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain explicit FieldInitializerValidatorCCC(RecordDecl *RD) 1539425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain : Record(RD) {} 1540425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1541425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain virtual bool ValidateCandidate(const TypoCorrection &candidate) { 1542425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldDecl *FD = candidate.getCorrectionDeclAs<FieldDecl>(); 1543425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain return FD && FD->getDeclContext()->getRedeclContext()->Equals(Record); 1544425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain } 1545425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1546425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain private: 1547425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RecordDecl *Record; 1548425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain}; 1549425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 1550425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain} 1551425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain 155205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @brief Check the well-formedness of a C99 designated initializer. 155305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 155405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Determines whether the designated initializer @p DIE, which 155505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// resides at the given @p Index within the initializer list @p 155605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// IList, is well-formed for a current object of type @p DeclType 155705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// (C99 6.7.8). The actual subobject that this designator refers to 15581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// within the current subobject is returned in either 15594c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @p NextField or @p NextElementIndex (whichever is appropriate). 156005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 156105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param IList The initializer list in which this designated 156205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// initializer occurs. 156305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 1564711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DIE The designated initializer expression. 1565711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// 1566711997184366d584c9c437102cae1e9d9927b986Douglas Gregor/// @param DesigIdx The index of the current designator. 156705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 156805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param DeclType The type of the "current object" (C99 6.7.8p17), 156905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// into which the designation in @p DIE should refer. 157005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextField If non-NULL and the first designator in @p DIE is 157287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// a field, this will be set to the field declaration corresponding 157387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// to the field named by the designator. 157405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// @param NextElementIndex If non-NULL and the first designator in @p 157687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// DIE is an array designator or GNU array-range designator, this 157787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor/// will be set to the last index initialized by this designator. 157805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 157905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @param Index Index into @p IList where the designated initializer 158005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @p DIE occurs. 158105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// 15824c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// @param StructuredList The initializer list expression that 15834c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// describes all of the subobject initializers in the order they'll 15844c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// actually be initialized. 15854c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// 158605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// @returns true if there was an error, false otherwise. 15871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpbool 15888ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders CarlssonInitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, 15899a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitListExpr *IList, 159014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr *DIE, 159114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned DesigIdx, 159214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType &CurrentObjectType, 159314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl RecordDecl::field_iterator *NextField, 159414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl llvm::APSInt *NextElementIndex, 159514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &Index, 159614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr *StructuredList, 159714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl unsigned &StructuredIndex, 1598eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool FinishSubobjectInit, 1599eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool TopLevelObject) { 1600711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if (DesigIdx == DIE->size()) { 160187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the actual initialization for the designated object type. 160287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 16036fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16046fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Temporarily remove the designator expression from the 16056fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // initializer list that the child calls see, so that we don't try 16066fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // to re-process the designator. 16076fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor unsigned OldIndex = Index; 16086fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE->getInit()); 16096fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16109a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson CheckSubElementType(Entity, IList, CurrentObjectType, Index, 16114c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, StructuredIndex); 16126fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 16136fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // Restore the designated initializer expression in the syntactic 16146fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor // form of the initializer list. 16156fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor if (IList->getInit(OldIndex) != DIE->getInit()) 16166fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor DIE->setInit(IList->getInit(OldIndex)); 16176fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor IList->setInit(OldIndex, DIE); 16186fbdc6bd38cc51232223ae3539c32f23c45ea852Douglas Gregor 161987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 162087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 162105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 1622711997184366d584c9c437102cae1e9d9927b986Douglas Gregor DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); 162314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool IsFirstDesignator = (DesigIdx == 0); 162414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 162514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert((IsFirstDesignator || StructuredList) && 162614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Need a non-designated initializer list to start from"); 162714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 162814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Determine the structural initializer list that corresponds to the 162914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // current subobject. 163014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList = IsFirstDesignator? SyntacticToSemantic[IList] 163114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl : getStructuredSubobjectInit(IList, Index, CurrentObjectType, 163214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList, StructuredIndex, 163314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SourceRange(D->getStartLocation(), 163414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd())); 163514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(StructuredList && "Expected a structured initializer list"); 163614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 16374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 163887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (D->isFieldDesignator()) { 163987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p7: 164087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 164287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // . identifier 164487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 164587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have 164687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // structure or union type and the identifier shall be the 16471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // name of a member of that type. 16486217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = CurrentObjectType->getAs<RecordType>(); 164987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!RT) { 165087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor SourceLocation Loc = D->getDotLoc(); 165187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (Loc.isInvalid()) 165287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Loc = D->getFieldLoc(); 165314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 165414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) 165514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SemaRef.getLangOptions().CPlusPlus << CurrentObjectType; 165687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 165787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 165887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 165987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Note: we perform a linear search of the fields here, despite 16614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the fact that we have a faster lookup method, because we always 16624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // need to compute the field's index. 1663ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor FieldDecl *KnownField = D->getField(); 166487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IdentifierInfo *FieldName = D->getFieldName(); 16654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned FieldIndex = 0; 16661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump RecordDecl::field_iterator 166717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis Field = RT->getDecl()->field_begin(), 166817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RT->getDecl()->field_end(); 16694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor for (; Field != FieldEnd; ++Field) { 16704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field->isUnnamedBitfield()) 16714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor continue; 1672dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1673a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // If we find a field representing an anonymous field, look in the 1674a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet // IndirectFieldDecl that follow for the designated initializer. 1675a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField && Field->isAnonymousStructOrUnion()) { 1676a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (IndirectFieldDecl *IF = 1677a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet FindIndirectFieldDesignator(*Field, FieldName)) { 167814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // In verify mode, don't modify the original. 167914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 168014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE = CloneDesignatedInitExpr(SemaRef, DIE); 1681a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, IF); 1682a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet D = DIE->getDesignator(DesigIdx); 1683a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet break; 1684a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1685a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet } 1686022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (KnownField && KnownField == *Field) 1687022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor break; 1688022d13de47a5f02d1e4089fa3360fae8bcb17666Douglas Gregor if (FieldName && FieldName == Field->getIdentifier()) 16894c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor break; 16904c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 16914c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 169287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 169387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 16944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Field == FieldEnd) { 1695a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer if (VerifyOnly) { 1696a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer ++Index; 169714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return true; // No typo correction when just trying this out. 1698a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer } 169914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 1700ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // There was no normal field in the struct with the designated 1701ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // name. Perform another lookup for this name, which may find 1702ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // something that we can't designate (e.g., a member function), 1703ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // may find nothing, or may find a member of an anonymous 17041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // struct/union. 170517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); 1706c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldDecl *ReplacementField = 0; 17074c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (Lookup.first == Lookup.second) { 1708c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // Name lookup didn't find anything. Determine whether this 1709c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // was a typo for another field name. 1710425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain FieldInitializerValidatorCCC Validator(RT->getDecl()); 1711d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor TypoCorrection Corrected = SemaRef.CorrectTypo( 1712d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor DeclarationNameInfo(FieldName, D->getFieldLoc()), 1713425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain Sema::LookupMemberName, /*Scope=*/0, /*SS=*/0, &Validator, 1714425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain RT->getDecl()); 1715425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain if (Corrected) { 1716d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedStr( 1717d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor Corrected.getAsString(SemaRef.getLangOptions())); 1718d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor std::string CorrectedQuotedStr( 1719d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor Corrected.getQuoted(SemaRef.getLangOptions())); 1720425d631082699b37624a7b1d6abb87c7abd5abe6Kaelyn Uhrain ReplacementField = Corrected.getCorrectionDeclAs<FieldDecl>(); 1721dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(D->getFieldLoc(), 1722c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor diag::err_field_designator_unknown_suggest) 1723d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FieldName << CurrentObjectType << CorrectedQuotedStr 1724d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor << FixItHint::CreateReplacement(D->getFieldLoc(), CorrectedStr); 1725dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi SemaRef.Diag(ReplacementField->getLocation(), 1726d8bba9c15230d2b1b3893e272106aa79efc50251Douglas Gregor diag::note_previous_decl) << CorrectedQuotedStr; 1727a41ee4921f0b42861cbb795752919ee3eddaf143Benjamin Kramer hadError = true; 1728c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } else { 1729c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) 1730c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor << FieldName << CurrentObjectType; 1731c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++Index; 1732c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor return true; 1733c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1734c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1735dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 1736c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (!ReplacementField) { 17374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Name lookup found something, but it wasn't a field. 17380820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) 17394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << FieldName; 17401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag((*Lookup.first)->getLocation(), 17414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_field_designator_found); 1742ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman ++Index; 1743ba79fc2d1b742e34df104aadb2780725c2a882fcEli Friedman return true; 1744ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor } 1745c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1746a0e27f00158c9306d53b0003b94182e415380ea9Francois Pichet if (!KnownField) { 1747c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // The replacement field comes from typo correction; find it 1748c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor // in the list of fields. 1749c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor FieldIndex = 0; 1750c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field = RT->getDecl()->field_begin(); 1751c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor for (; Field != FieldEnd; ++Field) { 1752c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor if (Field->isUnnamedBitfield()) 1753c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor continue; 1754c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1755dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (ReplacementField == *Field || 1756c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor Field->getIdentifier() == ReplacementField->getIdentifier()) 1757c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor break; 1758c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor 1759c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor ++FieldIndex; 1760c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 1761c171e3b192a372669cf622ff0b6a847f8e5b4220Douglas Gregor } 176287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 17634c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 17644c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // All of the fields of a union are located at the same place in 17654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // the initializer list. 17660bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor if (RT->getDecl()->isUnion()) { 17674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor FieldIndex = 0; 176814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 176914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->setInitializedFieldInUnion(*Field); 17700bb76897bedb8b747efc6523efb432fc24966118Douglas Gregor } 17714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 177254001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor // Make sure we can use this declaration. 177314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl bool InvalidUse; 177414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 177514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = !SemaRef.CanUseDecl(*Field); 177614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl else 177714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, D->getFieldLoc()); 177814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (InvalidUse) { 177954001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor ++Index; 178054001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor return true; 178114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 178254001c1e6a87b792b0711b822def2b1bfe1ad4a1Douglas Gregor 178314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 178414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Update the designator with the field declaration. 178514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl D->setField(*Field); 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 178714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Make sure that our non-designated initializer list has space 178814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // for a subobject corresponding to this field. 178914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (FieldIndex >= StructuredList->getNumInits()) 179014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); 179114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 17924c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 1793eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // This designator names a flexible array member. 1794eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Field->getType()->isIncompleteArrayType()) { 1795eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool Invalid = false; 1796711997184366d584c9c437102cae1e9d9927b986Douglas Gregor if ((DesigIdx + 1) != DIE->size()) { 1797eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // We can't designate an object within the flexible array 1798eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // member (because GCC doesn't allow it). 179914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 180014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedInitExpr::Designator *NextD 180114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl = DIE->getDesignator(DesigIdx + 1); 180214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(NextD->getStartLocation(), 180314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_designator_into_flexible_array_member) 180414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << SourceRange(NextD->getStartLocation(), 180514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getSourceRange().getEnd()); 180614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 180714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << *Field; 180814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1809eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1810eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1811eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 18129046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner if (!hadError && !isa<InitListExpr>(DIE->getInit()) && 18139046c224f16be3cef84f03b96a6c00a621c8383eChris Lattner !isa<StringLiteral>(DIE->getInit())) { 1814eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // The initializer is not an initializer list. 181514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) { 181614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(DIE->getInit()->getSourceRange().getBegin(), 181714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_flexible_array_init_needs_braces) 181814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DIE->getInit()->getSourceRange(); 181914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) 182014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << *Field; 182114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 1822eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1823eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1824eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1825f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman // Check GNU flexible array initializer. 1826f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman if (!Invalid && CheckFlexibleArrayInit(Entity, DIE->getInit(), *Field, 1827f40fd6bbb2684db5efb18627ea355613c235d23fEli Friedman TopLevelObject)) 1828eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor Invalid = true; 1829eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1830eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (Invalid) { 1831eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Index; 1832eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1833eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1834eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor 1835eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Initialize the array. 1836eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor bool prevHadError = hadError; 1837eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1838eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned OldIndex = Index; 1839eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(Index, DIE->getInit()); 18408ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 18418ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity MemberEntity = 18428ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 18438ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckSubElementType(MemberEntity, IList, Field->getType(), Index, 1844eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredList, newStructuredIndex); 18458ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson 1846eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor IList->setInit(OldIndex, DIE); 1847eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (hadError && !prevHadError) { 1848eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++Field; 1849eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor ++FieldIndex; 1850eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor if (NextField) 1851eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor *NextField = Field; 1852eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor StructuredIndex = FieldIndex; 1853eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1854eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 1855eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } else { 1856eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor // Recurse to check later designated subobjects. 1857eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor QualType FieldType = (*Field)->getType(); 1858eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor unsigned newStructuredIndex = FieldIndex; 1859dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18609a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity MemberEntity = 18618ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeMember(*Field, &Entity); 1862dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, 1863dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi FieldType, 0, 0, Index, 18649a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, newStructuredIndex, 1865eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor true, false)) 1866eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor return true; 1867eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor } 186887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 186987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Find the position of the next field to be initialized in this 187087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // subobject. 187187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Field; 18724c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++FieldIndex; 187305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 187487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 187587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this struct/class/union subobject. 187687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 187787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextField) 187887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor *NextField = Field; 18794c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = FieldIndex; 188087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 188187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 188205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 188334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 188434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 188534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1886ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor // We've already initialized something in the union; we're done. 1887ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor if (RT->getDecl()->isUnion()) 1888ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor return hadError; 1889ffb4b6e299069139908540ce97be4462e16b53a4Douglas Gregor 189087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining fields within this class/struct/union subobject. 189187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor bool prevHadError = hadError; 1892dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 18938ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson CheckStructUnionTypes(Entity, IList, CurrentObjectType, Field, false, Index, 18944c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, FieldIndex); 189587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return hadError && !prevHadError; 189687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 189705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 189887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // C99 6.7.8p6: 189987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If a designator has the form 190187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ] 190387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // then the current object (defined below) shall have array 190587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // type and the expression shall be an integer constant 190687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // expression. If the array is of unknown size, any 190787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // nonnegative value is valid. 190887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 190987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Additionally, cope with the GNU extension that permits 191087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // designators of the form 191187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // 191287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // [ constant-expression ... constant-expression ] 19130820254f97bb8925d933a3664ea1c6fca3997b97Chris Lattner const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); 191487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (!AT) { 191514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly) 191614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) 191714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << CurrentObjectType; 191887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 191987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 192087f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 192105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 192287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor Expr *IndexExpr = 0; 192334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; 192434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (D->isArrayDesignator()) { 192587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayIndex(*D); 1926a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DesignatedStartIndex = IndexExpr->EvaluateKnownConstInt(SemaRef.Context); 192734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex = DesignatedStartIndex; 192834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 192987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor assert(D->isArrayRangeDesignator() && "Need array-range designator"); 19303bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 19311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedStartIndex = 1932a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeStart(*D)->EvaluateKnownConstInt(SemaRef.Context); 19331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump DesignatedEndIndex = 1934a6b8b2c09610b8bc4330e948ece8b940c2386406Richard Smith DIE->getArrayRangeEnd(*D)->EvaluateKnownConstInt(SemaRef.Context); 193587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor IndexExpr = DIE->getArrayRangeEnd(*D); 193634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 1937e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // Codegen can't handle evaluating array range designators that have side 1938e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // effects, because we replicate the AST value for each initialized element. 1939e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // As such, set the sawArrayRangeDesignator() bit if we initialize multiple 1940e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // elements with something that has a side effect, so codegen can emit an 1941e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner // "error unsupported" error instead of miscompiling the app. 1942e0fd832b076eb5a1e4a4549687af0dbf2ad57181Chris Lattner if (DesignatedStartIndex.getZExtValue()!=DesignatedEndIndex.getZExtValue()&& 194314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DIE->getInit()->HasSideEffects(SemaRef.Context) && !VerifyOnly) 1944a9c878086036de36482cc21e35a33cabe9699b0aDouglas Gregor FullyStructuredList->sawArrayRangeDesignator(); 194587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 194605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 194787f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (isa<ConstantArrayType>(AT)) { 194887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); 19499f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19509f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); 195134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); 19529f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19539f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); 195434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); 195534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedEndIndex >= MaxElements) { 1956a4e20e1e43df39e39328035c84c46fdcbbf3a01eEli Friedman if (!VerifyOnly) 195714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl SemaRef.Diag(IndexExpr->getSourceRange().getBegin(), 195814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl diag::err_array_designator_too_large) 195914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << DesignatedEndIndex.toString(10) << MaxElements.toString(10) 196014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl << IndexExpr->getSourceRange(); 196187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor ++Index; 196287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return true; 196305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 196434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } else { 196534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Make sure the bit-widths and signedness match. 196634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (DesignatedStartIndex.getBitWidth() > DesignatedEndIndex.getBitWidth()) 19679f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedEndIndex 19689f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedEndIndex.extend(DesignatedStartIndex.getBitWidth()); 19693bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner else if (DesignatedStartIndex.getBitWidth() < 19703bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner DesignatedEndIndex.getBitWidth()) 19719f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad DesignatedStartIndex 19729f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad = DesignatedStartIndex.extend(DesignatedEndIndex.getBitWidth()); 197334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedStartIndex.setIsUnsigned(true); 197434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.setIsUnsigned(true); 197505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 19761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19774c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Make sure that our non-designated initializer list has space 19784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // for a subobject corresponding to this array element. 197914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (!VerifyOnly && 198014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) 19811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump StructuredList->resizeInits(SemaRef.Context, 198234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor DesignatedEndIndex.getZExtValue() + 1); 198334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Repeatedly perform subobject initializations in the range 198534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // [DesignatedStartIndex, DesignatedEndIndex]. 198634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 198734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next designator 198834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); 198934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor unsigned OldIndex = Index; 1990dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19919a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson InitializedEntity ElementEntity = 19928ff9e86c492c784b3ce2abe5b5d870cd6db365a8Anders Carlsson InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); 19939a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson 199434e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor while (DesignatedStartIndex <= DesignatedEndIndex) { 199534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Recurse to check later designated subobjects. 199634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor QualType ElementType = AT->getElementType(); 199734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor Index = OldIndex; 1998dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 19999a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson ElementEntity.setElementIndex(ElementIndex); 2000dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (CheckDesignatedInitializer(ElementEntity, IList, DIE, DesigIdx + 1, 2001dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ElementType, 0, 0, Index, 20029a8a70ef79f68db5b17d505eb9681bf161384fe8Anders Carlsson StructuredList, ElementIndex, 2003eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor (DesignatedStartIndex == DesignatedEndIndex), 2004eeb15d499f032bb89773ddaca2d17475122a37bbDouglas Gregor false)) 200534e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return true; 200687f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 200734e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor // Move to the next index in the array that we'll be initializing. 200834e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ++DesignatedStartIndex; 200934e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor ElementIndex = DesignatedStartIndex.getZExtValue(); 201034e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor } 201187f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor 201287f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // If this the first designator, our caller will continue checking 201387f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // the rest of this array subobject. 201487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (IsFirstDesignator) { 201587f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor if (NextElementIndex) 201634e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor *NextElementIndex = DesignatedStartIndex; 20174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredIndex = ElementIndex; 201887f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor return false; 201987f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor } 20201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 202134e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor if (!FinishSubobjectInit) 202234e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor return false; 202334e7946831a63f96d3ba3478c74ca8e25ee52d7eDouglas Gregor 202487f55cf59e82f246d8605733e9300d0c5f6830a6Douglas Gregor // Check the remaining elements within this array subobject. 202505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool prevHadError = hadError; 2026dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, 2027784f69940755dd66cf244dd84f57a57d358e5c43Anders Carlsson /*SubobjectIsDesignatorContext=*/false, Index, 20284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor StructuredList, ElementIndex); 20291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return hadError && !prevHadError; 203005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 203105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 20324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// Get the structured initializer list for a subobject of type 20334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor// @p CurrentObjectType. 20344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListExpr * 20354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas GregorInitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, 20364c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor QualType CurrentObjectType, 20374c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor InitListExpr *StructuredList, 20384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned StructuredIndex, 20394c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SourceRange InitRange) { 204014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (VerifyOnly) 204114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return 0; // No structured list in verification-only mode. 20424c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *ExistingInit = 0; 20434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 20444c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = SyntacticToSemantic[IList]; 20454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else if (StructuredIndex < StructuredList->getNumInits()) 20464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ExistingInit = StructuredList->getInit(StructuredIndex); 20471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) 20494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 20504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20514c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (ExistingInit) { 20524c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // We are creating an initializer list that initializes the 20534c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobjects of the current object, but there was already an 20544c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // initialization that completely initialized the current 20554c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject, e.g., by a compound literal: 20561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20574c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X { int a, b; }; 20584c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // struct X xs[] = { [0] = (struct X) { 1, 2 }, [0].b = 3 }; 20591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 20604c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Here, xs[0].a == 0 and xs[0].b == 3, since the second, 20614c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // designated initializer re-initializes the whole 20624c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // subobject [0], overwriting previous initializers. 20631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(InitRange.getBegin(), 2064ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor diag::warn_subobject_initializer_overrides) 20654c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << InitRange; 20661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(ExistingInit->getSourceRange().getBegin(), 20674c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 206854f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 20694c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << ExistingInit->getSourceRange(); 20704c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 20714c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 20721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump InitListExpr *Result 2073709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek = new (SemaRef.Context) InitListExpr(SemaRef.Context, 2074709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek InitRange.getBegin(), 0, 0, 2075ba7bc5584b8d46f4e8deb3a9d363256908fa86eaTed Kremenek InitRange.getEnd()); 2076ed8a93d17b8936dc7978cdc37f3f00fc49d24f71Douglas Gregor 20776398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor Result->setType(CurrentObjectType.getNonLValueExprType(SemaRef.Context)); 20784c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2079fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Pre-allocate storage for the structured initializer list. 2080fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor unsigned NumElements = 0; 208108457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor unsigned NumInits = 0; 2082f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis bool GotNumInits = false; 2083f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (!StructuredList) { 208408457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = IList->getNumInits(); 2085f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2086f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } else if (Index < IList->getNumInits()) { 2087f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (InitListExpr *SubList = dyn_cast<InitListExpr>(IList->getInit(Index))) { 208808457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor NumInits = SubList->getNumInits(); 2089f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis GotNumInits = true; 2090f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis } 209108457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor } 209208457737b60ba2e7f58ecf3062010843268fc6eaDouglas Gregor 20931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ArrayType *AType 2094fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor = SemaRef.Context.getAsArrayType(CurrentObjectType)) { 2095fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { 2096fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = CAType->getSize().getZExtValue(); 2097fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // Simple heuristic so that we don't allocate a very large 2098fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor // initializer with many empty entries at the end. 2099f8b1771677743d24c7391305cad8853c513ec0f8Argyrios Kyrtzidis if (GotNumInits && NumElements > NumInits) 2100fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 0; 2101fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2102183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) 2103fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = VType->getNumElements(); 21046217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek else if (const RecordType *RType = CurrentObjectType->getAs<RecordType>()) { 2105fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor RecordDecl *RDecl = RType->getDecl(); 2106fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor if (RDecl->isUnion()) 2107fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor NumElements = 1; 2108fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor else 21091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NumElements = std::distance(RDecl->field_begin(), 211017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RDecl->field_end()); 2111fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor } 2112fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 2113709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek Result->reserveInits(SemaRef.Context, NumElements); 2114fa2192042f223b5122a9e17719930f77634fd31fDouglas Gregor 21154c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // Link this new initializer list into the structured initializer 21164c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // lists. 21174c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (StructuredList) 2118709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); 21194c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor else { 21204c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Result->setSyntacticForm(IList); 21214c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor SyntacticToSemantic[IList] = Result; 21224c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21234c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21244c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return Result; 21254c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21264c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 21274c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// Update the initializer at index @p StructuredIndex within the 21284c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor/// structured initializer list to the value @p expr. 21294c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregorvoid InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, 21304c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor unsigned &StructuredIndex, 21314c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor Expr *expr) { 21324c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // No structured initializer list to update 21334c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor if (!StructuredList) 21344c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor return; 21354c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 2136709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, 2137709210feee317b8d6690dd1d15c2b74cfe55e261Ted Kremenek StructuredIndex, expr)) { 21384c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor // This initializer overwrites a previous initializer. Warn. 21391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(expr->getSourceRange().getBegin(), 21404c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::warn_initializer_overrides) 21414c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << expr->getSourceRange(); 21421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SemaRef.Diag(PrevInit->getSourceRange().getBegin(), 21434c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor diag::note_previous_initializer) 214454f0728c2ab0f967e976300478b2f5cdfed78415Douglas Gregor << /*FIXME:has side effects=*/0 21454c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor << PrevInit->getSourceRange(); 21464c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor } 21471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21484c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor ++StructuredIndex; 21494c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor} 21504c67834407ca6ab344dcf44fc599ad4938cfa96dDouglas Gregor 215105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// Check that the given Index expression is a valid array designator 215205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// value. This is essentailly just a wrapper around 21533bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner/// VerifyIntegerConstantExpression that also checks for negative values 215405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// and produces a reasonable diagnostic if there is a 215505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// failure. Returns true if there was an error, false otherwise. If 215605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// everything went okay, Value will receive the value of the constant 215705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor/// expression. 21581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic bool 21593bf6893b77c30cb774100e0fa7ae029331675ec1Chris LattnerCheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { 216005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor SourceLocation Loc = Index->getSourceRange().getBegin(); 216105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 216205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Make sure this is an integer constant expression. 21633bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (S.VerifyIntegerConstantExpression(Index, &Value)) 21643bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return true; 21653bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner 21663bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner if (Value.isSigned() && Value.isNegative()) 21673bf6893b77c30cb774100e0fa7ae029331675ec1Chris Lattner return S.Diag(Loc, diag::err_array_designator_negative) 216805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor << Value.toString(10) << Index->getSourceRange(); 216905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217053d3d8e0662197f7245d8f5ff697a72a2b4b3f54Douglas Gregor Value.setIsUnsigned(true); 217105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return false; 217205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 217305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 217460d7b3a319d84d688752be3870615ac0f111fb16John McCallExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, 21757663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky SourceLocation Loc, 21767663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky bool GNUSyntax, 21777663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky ExprResult Init) { 217805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor typedef DesignatedInitExpr::Designator ASTDesignator; 217905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor bool Invalid = false; 21815f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<ASTDesignator, 32> Designators; 21825f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Expr *, 32> InitExpressions; 218305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 218405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Build designators and check array designator expressions. 218505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { 218605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor const Designator &D = Desig.getDesignator(Idx); 218705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor switch (D.getKind()) { 218805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::FieldDesignator: 21891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), 219005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getFieldLoc())); 219105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 219205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 219305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayDesignator: { 219405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *Index = static_cast<Expr *>(D.getArrayIndex()); 219505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt IndexValue; 21969ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (!Index->isTypeDependent() && 21979ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor !Index->isValueDependent() && 21989ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, Index, IndexValue)) 219905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 220005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor else { 220105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 220305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor D.getRBracketLoc())); 220405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor InitExpressions.push_back(Index); 220505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 220605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 220705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 220805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 220905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor case Designator::ArrayRangeDesignator: { 221005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); 221105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); 221205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt StartValue; 221305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor llvm::APSInt EndValue; 22149ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool StartDependent = StartIndex->isTypeDependent() || 22159ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor StartIndex->isValueDependent(); 22169ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor bool EndDependent = EndIndex->isTypeDependent() || 22179ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor EndIndex->isValueDependent(); 22189ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if ((!StartDependent && 22199ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, StartIndex, StartValue)) || 22209ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor (!EndDependent && 22219ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor CheckArrayDesignatorExpr(*this, EndIndex, EndValue))) 222205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Invalid = true; 2223d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else { 2224d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor // Make sure we're comparing values with the same bit width. 22259ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor if (StartDependent || EndDependent) { 22269ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor // Nothing to compute. 22279ea62768fca25d829d80199cf4f8cf0f4dd39251Douglas Gregor } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) 22289f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad EndValue = EndValue.extend(StartValue.getBitWidth()); 2229d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor else if (StartValue.getBitWidth() < EndValue.getBitWidth()) 22309f71a8f4c7a182a5236da9e747d57cc1d1bd24c2Jay Foad StartValue = StartValue.extend(EndValue.getBitWidth()); 2231d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor 2232c4bb7bfe8328f79004517dd268f6146c8066c205Douglas Gregor if (!StartDependent && !EndDependent && EndValue < StartValue) { 2233d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) 22341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump << StartValue.toString(10) << EndValue.toString(10) 2235d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor << StartIndex->getSourceRange() << EndIndex->getSourceRange(); 2236d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Invalid = true; 2237d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } else { 2238d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor Designators.push_back(ASTDesignator(InitExpressions.size(), 22391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump D.getLBracketLoc(), 2240d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getEllipsisLoc(), 2241d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor D.getRBracketLoc())); 2242d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(StartIndex); 2243d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor InitExpressions.push_back(EndIndex); 2244d6f584ff262f51b40f4c9e317b13f1f21db29755Douglas Gregor } 224505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 224605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor break; 224705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 224805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 224905c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor } 225005c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 225105c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor if (Invalid || Init.isInvalid()) 225205c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return ExprError(); 225305c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 225405c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor // Clear out the expressions within the designation. 225505c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor Desig.ClearExprs(*this); 225605c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor 225705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor DesignatedInitExpr *DIE 2258beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad = DesignatedInitExpr::Create(Context, 2259beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad Designators.data(), Designators.size(), 2260beaaccd8e2a8748f77b66e2b330fb9136937e14cJay Foad InitExpressions.data(), InitExpressions.size(), 2261e9146f2e9f1c4e281544e8c080934c72d41012caAnders Carlsson Loc, GNUSyntax, Init.takeAs<Expr>()); 2262dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2263d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith if (!getLangOptions().C99) 22642d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor Diag(DIE->getLocStart(), diag::ext_designated_init) 22652d75bbd36e273f7b958aefc766424220ad158bd9Douglas Gregor << DIE->getSourceRange(); 2266dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 226705c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor return Owned(DIE); 226805c13a3411782108d65aab3c77b1a231a4963bc0Douglas Gregor} 2269c34ee5ef2b267a683c432ba0c342f7c3a14889d6Douglas Gregor 2270cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 2271cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor// Initialization entity 2272cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor//===----------------------------------------------------------------------===// 227339da0b8145eaec7da7004f9b3645c5c9f4f63b1dDouglas Gregor 2274dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, 2275cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor const InitializedEntity &Parent) 2276dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi : Parent(&Parent), Index(Index) 2277cb57fb9f91e0976f4a3382b89a2734ffa50eb6fbDouglas Gregor{ 2278d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { 2279d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_ArrayElement; 2280d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Type = AT->getElementType(); 22810c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else if (const VectorType *VT = Parent.getType()->getAs<VectorType>()) { 2282d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson Kind = EK_VectorElement; 22830c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = VT->getElementType(); 22840c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman } else { 22850c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman const ComplexType *CT = Parent.getType()->getAs<ComplexType>(); 22860c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman assert(CT && "Unexpected type"); 22870c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Kind = EK_ComplexElement; 22880c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman Type = CT->getElementType(); 2289d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson } 229020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 229120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2292dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiInitializedEntity InitializedEntity::InitializeBase(ASTContext &Context, 2293711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson CXXBaseSpecifier *Base, 2294711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson bool IsInheritedVirtualBase) 229520093b4bf698f292c664676987541d5103b65b15Douglas Gregor{ 229620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializedEntity Result; 229720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Result.Kind = EK_Base; 2298711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base = reinterpret_cast<uintptr_t>(Base); 2299711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson if (IsInheritedVirtualBase) 2300711f34adb886cce8ba86c7b1b6513a1eaaf63bb5Anders Carlsson Result.Base |= 0x01; 2301dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2302d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Result.Type = Base->getType(); 230320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 230420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 230520093b4bf698f292c664676987541d5103b65b15Douglas Gregor 230699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas GregorDeclarationName InitializedEntity::getName() const { 230799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (getKind()) { 2308f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: { 2309f85e193739c953358c865005855253af4f68a497John McCall ParmVarDecl *D = reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2310f85e193739c953358c865005855253af4f68a497John McCall return (D ? D->getDeclName() : DeclarationName()); 2311f85e193739c953358c865005855253af4f68a497John McCall } 2312a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor 2313a188ff2d8a18140541fcd5884deda4552dac71a7Douglas Gregor case EK_Variable: 231499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Member: 231599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return VariableOrMember->getDeclName(); 231699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 231799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Result: 231899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Exception: 231918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case EK_New: 232099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Temporary: 232199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case EK_Base: 2322059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2323d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2324d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23250c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2326310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 232799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 232899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 2329dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 233099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Silence GCC warning 233199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return DeclarationName(); 233299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 233399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 23347abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas GregorDeclaratorDecl *InitializedEntity::getDecl() const { 23357abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor switch (getKind()) { 23367abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Variable: 23377abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Member: 23387abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return VariableOrMember; 23397abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 2340f85e193739c953358c865005855253af4f68a497John McCall case EK_Parameter: 2341f85e193739c953358c865005855253af4f68a497John McCall return reinterpret_cast<ParmVarDecl*>(Parameter & ~0x1); 2342f85e193739c953358c865005855253af4f68a497John McCall 23437abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Result: 23447abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Exception: 23457abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_New: 23467abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Temporary: 23477abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor case EK_Base: 2348059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 2349d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_ArrayElement: 2350d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case EK_VectorElement: 23510c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2352310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23537abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 23547abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor } 2355dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23567abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor // Silence GCC warning 23577abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor return 0; 23587abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor} 23597abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor 23603c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregorbool InitializedEntity::allowsNRVO() const { 23613c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor switch (getKind()) { 23623c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Result: 23633c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Exception: 23643c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return LocAndNRVO.NRVO; 2365dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 23663c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Variable: 23673c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Parameter: 23683c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Member: 23693c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_New: 23703c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Temporary: 23713c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_Base: 2372059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case EK_Delegating: 23733c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_ArrayElement: 23743c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor case EK_VectorElement: 23750c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case EK_ComplexElement: 2376310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case EK_BlockElement: 23773c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor break; 23783c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor } 23793c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 23803c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor return false; 23813c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor} 23823c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor 238320093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 238420093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Initialization sequence 238520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 238620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 238720093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::Step::Destroy() { 238820093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Kind) { 238920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 239020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 2391906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 239220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: 239320093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 239420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 2395523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 239620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: 239720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionRValue: 2398906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 239920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 2400d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: 24018713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 240213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 240313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 240451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case SK_ConstructorInitialization: 240571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: 240618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 2407cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 2408569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 2409cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 2410f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 2411f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 2412f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 241320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 2414dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 241520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ConversionSequence: 241620093b4bf698f292c664676987541d5103b65b15Douglas Gregor delete ICS; 241720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 241820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 241920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2420b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isDirectReferenceBinding() const { 24213b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return !Steps.empty() && Steps.back().Kind == SK_BindReference; 2422b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2423b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2424b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregorbool InitializationSequence::isAmbiguous() const { 2425d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 2426b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2427dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2428b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor switch (getFailureKind()) { 2429b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForReference: 2430b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitList: 2431b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 2432b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_AddressOfOverloadFailed: // FIXME: Could do better 2433b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 2434b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 2435b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_RValueReferenceBindingToLValue: 2436b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitDropsQualifiers: 2437b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitFailed: 2438b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConversionFailed: 2439429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 2440b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_TooManyInitsForScalar: 2441b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceBindingToInitList: 2442b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_InitListBadDestinationType: 2443b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_DefaultInitOfConst: 244472a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 2445cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 2446cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 24478713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 244873076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 24495acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 2450b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2451dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2452b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ReferenceInitOverloadFailed: 2453b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_UserConversionOverloadFailed: 2454b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor case FK_ConstructorOverloadFailed: 2455cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 2456b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return FailedOverloadResult == OR_Ambiguous; 2457b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor } 2458dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 2459b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor return false; 2460b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor} 2461b70cf44bf1b1956e0c6b98373c4f69b23afa0052Douglas Gregor 2462d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregorbool InitializationSequence::isConstructorInitialization() const { 2463d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; 2464d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor} 2465d6e44a3c4193bd422bfa78c8086fb16bb2168e34Douglas Gregor 2466191591336f639dad1504e863733fb831645c1644Jeffrey Yasskinbool InitializationSequence::endsWithNarrowing(ASTContext &Ctx, 2467191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const Expr *Initializer, 2468191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin bool *isInitializerConstant, 2469191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin APValue *ConstantValue) const { 2470191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (Steps.empty() || Initializer->isValueDependent()) 2471191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2472191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2473191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const Step &LastStep = Steps.back(); 2474191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (LastStep.Kind != SK_ConversionSequence) 2475191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2476191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2477191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const ImplicitConversionSequence &ICS = *LastStep.ICS; 2478191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const StandardConversionSequence *SCS = NULL; 2479191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin switch (ICS.getKind()) { 2480191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ImplicitConversionSequence::StandardConversion: 2481191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SCS = &ICS.Standard; 2482191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin break; 2483191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ImplicitConversionSequence::UserDefinedConversion: 2484191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin SCS = &ICS.UserDefined.After; 2485191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin break; 2486191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ImplicitConversionSequence::AmbiguousConversion: 2487191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ImplicitConversionSequence::EllipsisConversion: 2488191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ImplicitConversionSequence::BadConversion: 2489191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2490191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2491191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2492191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Check if SCS represents a narrowing conversion, according to C++0x 2493191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // [dcl.init.list]p7: 2494191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // 2495191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // A narrowing conversion is an implicit conversion ... 2496191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ImplicitConversionKind PossibleNarrowing = SCS->Second; 2497191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin QualType FromType = SCS->getToType(0); 2498191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin QualType ToType = SCS->getToType(1); 2499191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin switch (PossibleNarrowing) { 2500191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // * from a floating-point type to an integer type, or 2501191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // 2502191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // * from an integer type or unscoped enumeration type to a floating-point 2503191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // type, except where the source is a constant expression and the actual 2504191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // value after conversion will fit into the target type and will produce 2505191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // the original value when converted back to the original type, or 2506191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ICK_Floating_Integral: 2507191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (FromType->isRealFloatingType() && ToType->isIntegralType(Ctx)) { 2508191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = false; 2509191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return true; 2510191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else if (FromType->isIntegralType(Ctx) && ToType->isRealFloatingType()) { 2511191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APSInt IntConstantValue; 2512191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (Initializer && 2513191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Initializer->isIntegerConstantExpr(IntConstantValue, Ctx)) { 2514191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Convert the integer to the floating type. 2515191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APFloat Result(Ctx.getFloatTypeSemantics(ToType)); 2516191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Result.convertFromAPInt(IntConstantValue, IntConstantValue.isSigned(), 2517191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APFloat::rmNearestTiesToEven); 2518191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // And back. 2519191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APSInt ConvertedValue = IntConstantValue; 2520191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin bool ignored; 2521191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Result.convertToInteger(ConvertedValue, 2522191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APFloat::rmTowardZero, &ignored); 2523191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // If the resulting value is different, this was a narrowing conversion. 2524191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (IntConstantValue != ConvertedValue) { 2525191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = true; 2526191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *ConstantValue = APValue(IntConstantValue); 2527191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return true; 2528191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2529191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else { 2530191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Variables are always narrowings. 2531191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = false; 2532191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return true; 2533191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2534191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2535191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2536191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2537191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // * from long double to double or float, or from double to float, except 2538191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // where the source is a constant expression and the actual value after 2539191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // conversion is within the range of values that can be represented (even 2540191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // if it cannot be represented exactly), or 2541191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ICK_Floating_Conversion: 2542191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (1 == Ctx.getFloatingTypeOrder(FromType, ToType)) { 2543191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // FromType is larger than ToType. 2544191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Expr::EvalResult InitializerValue; 2545191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // FIXME: Check whether Initializer is a constant expression according 2546191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // to C++0x [expr.const], rather than just whether it can be folded. 254751f4708c00110940ca3f337961915f2ca1668375Richard Smith if (Initializer->EvaluateAsRValue(InitializerValue, Ctx) && 2548191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin !InitializerValue.HasSideEffects && InitializerValue.Val.isFloat()) { 2549191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Constant! (Except for FIXME above.) 2550191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APFloat FloatVal = InitializerValue.Val.getFloat(); 2551191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Convert the source value into the target type. 2552191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin bool ignored; 2553191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APFloat::opStatus ConvertStatus = FloatVal.convert( 2554191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Ctx.getFloatTypeSemantics(ToType), 2555191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APFloat::rmNearestTiesToEven, &ignored); 2556191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // If there was no overflow, the source value is within the range of 2557191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // values that can be represented. 2558191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (ConvertStatus & llvm::APFloat::opOverflow) { 2559191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = true; 2560191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *ConstantValue = InitializerValue.Val; 2561191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return true; 2562191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2563191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else { 2564191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = false; 2565191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return true; 2566191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2567191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2568191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2569191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2570191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // * from an integer type or unscoped enumeration type to an integer type 2571191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // that cannot represent all the values of the original type, except where 2572191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // the source is a constant expression and the actual value after 2573191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // conversion will fit into the target type and will produce the original 2574191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // value when converted back to the original type. 25756d0ee8d77b6d37fa0dec1d55aa13429a6608e7a9Jeffrey Yasskin case ICK_Boolean_Conversion: // Bools are integers too. 2576b89d5ed785e2eb7dd64aa38d481d939155f62c41Jeffrey Yasskin if (!FromType->isIntegralOrUnscopedEnumerationType()) { 2577b89d5ed785e2eb7dd64aa38d481d939155f62c41Jeffrey Yasskin // Boolean conversions can be from pointers and pointers to members 2578b89d5ed785e2eb7dd64aa38d481d939155f62c41Jeffrey Yasskin // [conv.bool], and those aren't considered narrowing conversions. 2579b89d5ed785e2eb7dd64aa38d481d939155f62c41Jeffrey Yasskin return false; 2580b89d5ed785e2eb7dd64aa38d481d939155f62c41Jeffrey Yasskin } // Otherwise, fall through to the integral case. 2581191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin case ICK_Integral_Conversion: { 2582191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin assert(FromType->isIntegralOrUnscopedEnumerationType()); 2583191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin assert(ToType->isIntegralOrUnscopedEnumerationType()); 2584191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const bool FromSigned = FromType->isSignedIntegerOrEnumerationType(); 2585191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const unsigned FromWidth = Ctx.getIntWidth(FromType); 2586191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const bool ToSigned = ToType->isSignedIntegerOrEnumerationType(); 2587191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin const unsigned ToWidth = Ctx.getIntWidth(ToType); 2588191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2589191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (FromWidth > ToWidth || 2590191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin (FromWidth == ToWidth && FromSigned != ToSigned)) { 2591191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Not all values of FromType can be represented in ToType. 2592191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APSInt InitializerValue; 2593191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (Initializer->isIntegerConstantExpr(InitializerValue, Ctx)) { 2594191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = true; 2595191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *ConstantValue = APValue(InitializerValue); 2596191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2597191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Add a bit to the InitializerValue so we don't have to worry about 2598191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // signed vs. unsigned comparisons. 2599191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin InitializerValue = InitializerValue.extend( 2600191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin InitializerValue.getBitWidth() + 1); 2601191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Convert the initializer to and from the target width and signed-ness. 2602191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::APSInt ConvertedValue = InitializerValue; 2603191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ConvertedValue = ConvertedValue.trunc(ToWidth); 2604191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ConvertedValue.setIsSigned(ToSigned); 2605191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ConvertedValue = ConvertedValue.extend(InitializerValue.getBitWidth()); 2606191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ConvertedValue.setIsSigned(InitializerValue.isSigned()); 2607191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // If the result is different, this was a narrowing conversion. 2608191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return ConvertedValue != InitializerValue; 2609191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else { 2610191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Variables are always narrowings. 2611191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin *isInitializerConstant = false; 2612191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return true; 2613191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2614191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2615191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2616191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2617191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 2618191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin default: 2619191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Other kinds of conversions are not narrowings. 2620191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return false; 2621191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 2622191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin} 2623191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 262422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 262522c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 262622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddAddressOverloadResolutionStep(FunctionDecl *Function, 262722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair Found, 262822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 262920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 263020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ResolveAddressOfOverloadedFunction; 263120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Function->getType(); 263222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 26339aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 26346bb8017bb9e828d118e15e59d71c66bba323c364John McCall S.Function.FoundDecl = Found; 263520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 263620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 263720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2638dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, 26395baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 264020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 26415baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 26425baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: S.Kind = SK_CastDerivedToBaseRValue; break; 26435baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break; 26445baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break; 2645906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl default: llvm_unreachable("No such category"); 2646906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 264720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = BaseType; 264820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 264920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 265020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2651dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::AddReferenceBindingStep(QualType T, 265220093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool BindingTemporary) { 265320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 265420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; 265520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 265620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 265720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 265820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2659523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregorvoid InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { 2660523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Step S; 2661523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Kind = SK_ExtraneousCopyToTemporary; 2662523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor S.Type = T; 2663523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Steps.push_back(S); 2664523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor} 2665523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 266622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnaravoid 266722c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence::AddUserConversionStep(FunctionDecl *Function, 266822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara DeclAccessPair FoundDecl, 266922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 267022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates) { 267120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 267220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_UserConversion; 267303981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman S.Type = T; 267422c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 26759aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Function; 26769aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = FoundDecl; 267720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 267820093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 267920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 268020093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddQualificationConversionStep(QualType Ty, 26815baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK) { 268220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 268338a4ffe5244e6be46f1b1f8394342a77836be776John McCall S.Kind = SK_QualificationConversionRValue; // work around a gcc warning 26845baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall switch (VK) { 26855baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_RValue: 2686906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionRValue; 2687906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 26885baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_XValue: 2689906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionXValue; 2690906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 26915baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall case VK_LValue: 2692906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl S.Kind = SK_QualificationConversionLValue; 2693906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 2694906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 269520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = Ty; 269620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 269720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 269820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 269920093b4bf698f292c664676987541d5103b65b15Douglas Gregorvoid InitializationSequence::AddConversionSequenceStep( 270020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const ImplicitConversionSequence &ICS, 270120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T) { 270220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step S; 270320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Kind = SK_ConversionSequence; 270420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Type = T; 270520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.ICS = new ImplicitConversionSequence(ICS); 270620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Steps.push_back(S); 270720093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 270820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2709d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregorvoid InitializationSequence::AddListInitializationStep(QualType T) { 2710d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Step S; 2711d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Kind = SK_ListInitialization; 2712d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Type = T; 2713d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Steps.push_back(S); 2714d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor} 2715d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 2716dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid 271722c107b2b99887b5aec6d1fd38210031e944e31fAbramo BagnaraInitializationSequence 271822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara::AddConstructorInitializationStep(CXXConstructorDecl *Constructor, 271922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara AccessSpecifier Access, 272022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara QualType T, 272110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates, 272210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool FromInitList) { 272351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Step S; 272410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.Kind = FromInitList ? SK_ListConstructorCall : SK_ConstructorInitialization; 272551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Type = T; 272622c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara S.Function.HadMultipleCandidates = HadMultipleCandidates; 27279aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.Function = Constructor; 27289aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.Function.FoundDecl = DeclAccessPair::make(Constructor, Access); 272951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Steps.push_back(S); 273051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor} 273151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 273271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregorvoid InitializationSequence::AddZeroInitializationStep(QualType T) { 273371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Step S; 273471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Kind = SK_ZeroInitialization; 273571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor S.Type = T; 273671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Steps.push_back(S); 273771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 273871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 273918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregorvoid InitializationSequence::AddCAssignmentStep(QualType T) { 274018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step S; 274118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Kind = SK_CAssignment; 274218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Type = T; 274318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Steps.push_back(S); 274418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 274518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 2746cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedmanvoid InitializationSequence::AddStringInitStep(QualType T) { 2747cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Step S; 2748cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Kind = SK_StringInit; 2749cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman S.Type = T; 2750cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman Steps.push_back(S); 2751cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman} 2752cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 2753569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregorvoid InitializationSequence::AddObjCObjectConversionStep(QualType T) { 2754569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Step S; 2755569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Kind = SK_ObjCObjectConversion; 2756569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Type = T; 2757569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Steps.push_back(S); 2758569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor} 2759569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 2760cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorvoid InitializationSequence::AddArrayInitStep(QualType T) { 2761cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Step S; 2762cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Kind = SK_ArrayInit; 2763cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Type = T; 2764cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Steps.push_back(S); 2765cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 2766cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 2767f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddPassByIndirectCopyRestoreStep(QualType type, 2768f85e193739c953358c865005855253af4f68a497John McCall bool shouldCopy) { 2769f85e193739c953358c865005855253af4f68a497John McCall Step s; 2770f85e193739c953358c865005855253af4f68a497John McCall s.Kind = (shouldCopy ? SK_PassByIndirectCopyRestore 2771f85e193739c953358c865005855253af4f68a497John McCall : SK_PassByIndirectRestore); 2772f85e193739c953358c865005855253af4f68a497John McCall s.Type = type; 2773f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(s); 2774f85e193739c953358c865005855253af4f68a497John McCall} 2775f85e193739c953358c865005855253af4f68a497John McCall 2776f85e193739c953358c865005855253af4f68a497John McCallvoid InitializationSequence::AddProduceObjCObjectStep(QualType T) { 2777f85e193739c953358c865005855253af4f68a497John McCall Step S; 2778f85e193739c953358c865005855253af4f68a497John McCall S.Kind = SK_ProduceObjCObject; 2779f85e193739c953358c865005855253af4f68a497John McCall S.Type = T; 2780f85e193739c953358c865005855253af4f68a497John McCall Steps.push_back(S); 2781f85e193739c953358c865005855253af4f68a497John McCall} 2782f85e193739c953358c865005855253af4f68a497John McCall 278313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlvoid InitializationSequence::RewrapReferenceInitList(QualType T, 278413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic) { 278513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl assert(Syntactic->getNumInits() == 1 && 278613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl "Can only rewrap trivial init lists."); 278713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Step S; 278813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_UnwrapInitList; 278913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = Syntactic->getInit(0)->getType(); 279013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.insert(Steps.begin(), S); 279113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 279213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Kind = SK_RewrapInitList; 279313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Type = T; 279413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.WrappingSyntacticList = Syntactic; 279513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Steps.push_back(S); 279613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 279713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 2798dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumivoid InitializationSequence::SetOverloadFailure(FailureKind Failure, 279920093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult Result) { 28007491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(FailedSequence); 280120093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->Failure = Failure; 280220093b4bf698f292c664676987541d5103b65b15Douglas Gregor this->FailedOverloadResult = Result; 280320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 280420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 280520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 280620093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Attempt initialization 280720093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 280820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 2809f85e193739c953358c865005855253af4f68a497John McCallstatic void MaybeProduceObjCObject(Sema &S, 2810f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 2811f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity) { 2812f85e193739c953358c865005855253af4f68a497John McCall if (!S.getLangOptions().ObjCAutoRefCount) return; 2813f85e193739c953358c865005855253af4f68a497John McCall 2814f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a parameter, produce the value if it's marked 2815f85e193739c953358c865005855253af4f68a497John McCall /// __attribute__((ns_consumed)). 2816f85e193739c953358c865005855253af4f68a497John McCall if (Entity.getKind() == InitializedEntity::EK_Parameter) { 2817f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.isParameterConsumed()) 2818f85e193739c953358c865005855253af4f68a497John McCall return; 2819f85e193739c953358c865005855253af4f68a497John McCall 2820f85e193739c953358c865005855253af4f68a497John McCall assert(Entity.getType()->isObjCRetainableType() && 2821f85e193739c953358c865005855253af4f68a497John McCall "consuming an object of unretainable type?"); 2822f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2823f85e193739c953358c865005855253af4f68a497John McCall 2824f85e193739c953358c865005855253af4f68a497John McCall /// When initializing a return value, if the return type is a 2825f85e193739c953358c865005855253af4f68a497John McCall /// retainable type, then returns need to immediately retain the 2826f85e193739c953358c865005855253af4f68a497John McCall /// object. If an autorelease is required, it will be done at the 2827f85e193739c953358c865005855253af4f68a497John McCall /// last instant. 2828f85e193739c953358c865005855253af4f68a497John McCall } else if (Entity.getKind() == InitializedEntity::EK_Result) { 2829f85e193739c953358c865005855253af4f68a497John McCall if (!Entity.getType()->isObjCRetainableType()) 2830f85e193739c953358c865005855253af4f68a497John McCall return; 2831f85e193739c953358c865005855253af4f68a497John McCall 2832f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddProduceObjCObjectStep(Entity.getType()); 2833f85e193739c953358c865005855253af4f68a497John McCall } 2834f85e193739c953358c865005855253af4f68a497John McCall} 2835f85e193739c953358c865005855253af4f68a497John McCall 283610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \brief When initializing from init list via constructor, deal with the 283710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// empty init list and std::initializer_list special cases. 283810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// 283910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \return True if this was a special case, false otherwise. 284010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic bool TryListConstructionSpecialCases(Sema &S, 284110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Args, unsigned NumArgs, 284210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *DestRecordDecl, 284310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl QualType DestType, 284410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitializationSequence &Sequence) { 284510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // C++0x [dcl.init.list]p3: 284610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // List-initialization of an object of type T is defined as follows: 284710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - If the initializer list has no elements and T is a class type with 284810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // a default constructor, the object is value-initialized. 284910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (NumArgs == 0) { 285010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (CXXConstructorDecl *DefaultConstructor = 285110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.LookupDefaultConstructor(DestRecordDecl)) { 285210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (DefaultConstructor->isDeleted() || 285310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.isFunctionConsideredUnavailable(DefaultConstructor)) { 285410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Fake an overload resolution failure. 285510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 285610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DeclAccessPair FoundDecl = DeclAccessPair::make(DefaultConstructor, 285710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DefaultConstructor->getAccess()); 285810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (FunctionTemplateDecl *ConstructorTmpl = 285910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl dyn_cast<FunctionTemplateDecl>(DefaultConstructor)) 286010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 286110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*ExplicitArgs*/ 0, 286210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Args, NumArgs, CandidateSet, 286310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*SuppressUserConversions*/ false); 286410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 286510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.AddOverloadCandidate(DefaultConstructor, FoundDecl, 286610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Args, NumArgs, CandidateSet, 286710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*SuppressUserConversions*/ false); 286810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetOverloadFailure( 2869cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ListConstructorOverloadFailed, 2870cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl OR_Deleted); 287110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else 287210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.AddConstructorInitializationStep(DefaultConstructor, 287310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DefaultConstructor->getAccess(), 287410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, 287510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*MultipleCandidates=*/false, 287610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*FromInitList=*/true); 287710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return true; 287810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 287910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 288010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 288110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - Otherwise, if T is a specialization of std::initializer_list, [...] 288210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // FIXME: Implement. 288310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 288410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Not a special case. 288510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return false; 288610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 288710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 288810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// \brief Attempt initialization by constructor (C++ [dcl.init]), which 288910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// enumerates the constructors of the initialized entity and performs overload 289010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// resolution to select the best. 289110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// If FromInitList is true, this is list-initialization of a non-aggregate 289210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl/// class type. 289310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic void TryConstructorInitialization(Sema &S, 289410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 289510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 289610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Args, unsigned NumArgs, 289710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl QualType DestType, 289810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitializationSequence &Sequence, 289910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool FromInitList = false) { 290010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Check constructor arguments for self reference. 290110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (DeclaratorDecl *DD = Entity.getDecl()) 290210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Parameters arguments are occassionially constructed with itself, 290310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // for instance, in recursive functions. Skip them. 290410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!isa<ParmVarDecl>(DD)) 290510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl for (unsigned i = 0; i < NumArgs; ++i) 290610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckSelfReference(DD, Args[i]); 290710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 290810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Build the candidate set directly in the initialization sequence 290910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // structure, so that it will persist if we fail. 291010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 291110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CandidateSet.clear(); 291210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 291310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Determine whether we are allowed to call explicit constructors or 291410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // explicit conversion operators. 291510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct || 291610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Value || 291710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Default); 291810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 291910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // The type we're constructing needs to be complete. 292010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 292110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_Incomplete); 292210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 292310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 292410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const RecordType *DestRecordType = DestType->getAs<RecordType>(); 292510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl assert(DestRecordType && "Constructor initialization requires record type"); 292610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *DestRecordDecl 292710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXRecordDecl>(DestRecordType->getDecl()); 292810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 292910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (FromInitList && 293010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TryListConstructionSpecialCases(S, Args, NumArgs, DestRecordDecl, 293110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, Sequence)) 293210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 293310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 293410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // - Otherwise, if T is a class type, constructors are considered. The 293510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // applicable constructors are enumerated, and the best one is chosen 293610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // through overload resolution. 293710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DeclContext::lookup_iterator Con, ConEnd; 293810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 293910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Con != ConEnd; ++Con) { 294010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl NamedDecl *D = *Con; 294110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 294210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool SuppressUserConversions = false; 294310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 294410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Find the constructor (which may be a template). 294510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructorDecl *Constructor = 0; 294610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 294710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (ConstructorTmpl) 294810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor = cast<CXXConstructorDecl>( 294910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorTmpl->getTemplatedDecl()); 295010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else { 295110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor = cast<CXXConstructorDecl>(D); 295210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 295310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If we're performing copy initialization using a copy constructor, we 295410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // suppress user-defined conversions on the arguments. 295510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // FIXME: Move constructors? 295610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Copy && 295710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor->isCopyConstructor()) 295810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SuppressUserConversions = true; 295910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 296010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 296110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!Constructor->isInvalidDecl() && 296210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl (AllowExplicit || !Constructor->isExplicit())) { 296310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (ConstructorTmpl) 296410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 296510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*ExplicitArgs*/ 0, 296610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Args, NumArgs, CandidateSet, 296710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SuppressUserConversions); 296810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 296910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.AddOverloadCandidate(Constructor, FoundDecl, 297010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Args, NumArgs, CandidateSet, 297110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SuppressUserConversions); 297210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 297310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 297410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 297510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceLocation DeclLoc = Kind.getLocation(); 297610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 297710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Perform overload resolution. If it fails, return the failed result. 297810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl OverloadCandidateSet::iterator Best; 297910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (OverloadingResult Result 298010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = CandidateSet.BestViableFunction(S, DeclLoc, Best)) { 2981cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl Sequence.SetOverloadFailure(FromInitList ? 2982cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ListConstructorOverloadFailed : 2983cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitializationSequence::FK_ConstructorOverloadFailed, 298410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Result); 298510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 298610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 298710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 298810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // C++0x [dcl.init]p6: 298910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If a program calls for the default initialization of an object 299010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // of a const-qualified type T, T shall be a class type with a 299110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // user-provided default constructor. 299210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default && 299310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Entity.getType().isConstQualified() && 299410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl cast<CXXConstructorDecl>(Best->Function)->isImplicit()) { 299510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 299610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return; 299710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 299810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 299910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Add the constructor initialization step. Any cv-qualification conversion is 300010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // subsumed by the initialization. 300110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = (CandidateSet.size() > 1); 300210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); 300310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.AddConstructorInitializationStep(CtorDecl, 300410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Best->FoundDecl.getAccess(), 300510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl DestType, HadMultipleCandidates, 300610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl FromInitList); 300710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 300810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 300913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic bool 301013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian RedlResolveOverloadedFunctionForReferenceBinding(Sema &S, 301113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 301213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &SourceType, 301313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType &UnqualifiedSourceType, 301413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType UnqualifiedTargetType, 301513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 301613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (S.Context.getCanonicalType(UnqualifiedSourceType) == 301713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Context.OverloadTy) { 301813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl DeclAccessPair Found; 301913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool HadMultipleCandidates = false; 302013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (FunctionDecl *Fn 302113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.ResolveAddressOfOverloadedFunction(Initializer, 302213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedTargetType, 302313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl false, Found, 302413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl &HadMultipleCandidates)) { 302513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddAddressOverloadResolutionStep(Fn, Found, 302613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl HadMultipleCandidates); 302713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceType = Fn->getType(); 302813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl UnqualifiedSourceType = SourceType.getUnqualifiedType(); 302913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } else if (!UnqualifiedTargetType->isRecordType()) { 303013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 303113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return true; 303213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 303313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 303413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return false; 303513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 303613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 303713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 303813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 303913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 304013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 304113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 304213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 304313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 304413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 304513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 304613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 304713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryListInitialization(Sema &S, 304813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 304913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 305013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 305113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence); 305213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 305313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Attempt list initialization of a reference. 305413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceListInitialization(Sema &S, 305513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 305613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 305713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *InitList, 305813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) 305913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl{ 306013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // First, catch C++03 where this isn't possible. 306113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (!S.getLangOptions().CPlusPlus0x) { 306213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); 306313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 306413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 306513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 306613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 306713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 306813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals; 306913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 307013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 307113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Reference initialization via an initializer list works thus: 307213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If the initializer list consists of a single element that is 307313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // reference-related to the referenced type, bind directly to that element 307413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // (possibly creating temporaries). 307513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Otherwise, initialize a temporary with the initializer list and 307613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // bind to that. 307713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (InitList->getNumInits() == 1) { 307813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer = InitList->getInit(0); 307913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2 = Initializer->getType(); 308013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals; 308113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 308213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 308313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // If this fails, creating a temporary wouldn't work either. 308413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 308513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 308613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 308713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 308813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 308913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool dummy1, dummy2, dummy3; 309013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sema::ReferenceCompareResult RefRelationship 309113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, dummy1, 309213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl dummy2, dummy3); 309313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (RefRelationship >= Sema::Ref_Related) { 309413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Try to bind the reference here. 309513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 309613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 309713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) 309813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.RewrapReferenceInitList(cv1T1, InitList); 309913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 310013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 310113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 310213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 310313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Not reference-related. Create a temporary and bind to that. 310413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 310513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 310613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryListInitialization(S, TempEntity, Kind, InitList, Sequence); 310713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (Sequence) { 310813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (DestType->isRValueReferenceType() || 310913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (T1Quals.hasConst() && !T1Quals.hasVolatile())) 311013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 311113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else 311213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Sequence.SetFailed( 311313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 311413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 311513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 311613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 311712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola/// \brief Attempt list initialization (C++0x [dcl.init.list]) 311812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindolastatic void TryListInitialization(Sema &S, 311912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializedEntity &Entity, 312012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola const InitializationKind &Kind, 312112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitListExpr *InitList, 312212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola InitializationSequence &Sequence) { 312312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 312412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 312514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // C++ doesn't allow scalar initialization with more than one argument. 312614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // But C99 complex numbers are scalars and it makes sense there. 312714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (S.getLangOptions().CPlusPlus && DestType->isScalarType() && 312814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl !DestType->isAnyComplexType() && InitList->getNumInits() > 1) { 312914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); 313014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 313114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 313214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DestType->isReferenceType()) { 313313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceListInitialization(S, Entity, Kind, InitList, Sequence); 313412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola return; 313514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 313614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (DestType->isRecordType() && !DestType->isAggregateType()) { 313710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.getLangOptions().CPlusPlus0x) 313810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TryConstructorInitialization(S, Entity, Kind, InitList->getInits(), 313910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitList->getNumInits(), DestType, Sequence, 314010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl /*FromInitList=*/true); 314110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 314210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Sequence.SetFailed(InitializationSequence::FK_InitListBadDestinationType); 314314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 314414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 314514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl 314614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker CheckInitList(S, Entity, InitList, 3147c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/true, 3148c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl Kind.getKind() != InitializationKind::IK_Direct || 3149c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl !S.getLangOptions().CPlusPlus0x); 315014b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (CheckInitList.HadError()) { 315114b0c194b356a1204d081765b3e6699687bed97cSebastian Redl Sequence.SetFailed(InitializationSequence::FK_ListInitializationFailed); 315214b0c194b356a1204d081765b3e6699687bed97cSebastian Redl return; 315312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola } 315412ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 315514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Add the list initialization step with the built init list. 315612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Sequence.AddListInitializationStep(DestType); 315712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola} 315820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 315920093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Try a reference initialization that involves calling a conversion 316020093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// function. 316120093b4bf698f292c664676987541d5103b65b15Douglas Gregorstatic OverloadingResult TryRefInitWithConversionFunction(Sema &S, 316220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 316320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 316420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 316520093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowRValues, 316620093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3167d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 316820093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 316920093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T1 = cv1T1.getUnqualifiedType(); 317020093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 317120093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType T2 = cv2T2.getUnqualifiedType(); 317220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 317320093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase; 3174569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion; 3175f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion; 3176dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi assert(!S.CompareReferenceRelationship(Initializer->getLocStart(), 3177569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T1, T2, DerivedToBase, 3178f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, 3179f85e193739c953358c865005855253af4f68a497John McCall ObjCLifetimeConversion) && 318020093b4bf698f292c664676987541d5103b65b15Douglas Gregor "Must have incompatible references when binding via conversion"); 318160cfcecaf48e4310339dcfbdb0e3f0e6d2853855Chandler Carruth (void)DerivedToBase; 3182569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor (void)ObjCConversion; 3183f85e193739c953358c865005855253af4f68a497John McCall (void)ObjCLifetimeConversion; 3184f85e193739c953358c865005855253af4f68a497John McCall 318520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the candidate set directly in the initialization sequence 318620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // structure, so that it will persist if we fail. 318720093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 318820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CandidateSet.clear(); 318920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 319020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 319120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 319220093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 3193dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 319420093b4bf698f292c664676987541d5103b65b15Douglas Gregor const RecordType *T1RecordType = 0; 31956b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && 31966b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T1, 0)) { 319720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting to is a class type. Enumerate its constructors 319820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to see if there is a suitable conversion. 319920093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); 3200572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall 320120093b4bf698f292c664676987541d5103b65b15Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3202e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(T1RecordDecl); 320320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Con != ConEnd; ++Con) { 32049aa472c45d2bd81b7b52c225e8acc560d716db97John McCall NamedDecl *D = *Con; 32059aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 32069aa472c45d2bd81b7b52c225e8acc560d716db97John McCall 320720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Find the constructor (which may be a template). 320820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConstructorDecl *Constructor = 0; 32099aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionTemplateDecl *ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D); 321020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 321120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor = cast<CXXConstructorDecl>( 321220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 321320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32149aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Constructor = cast<CXXConstructorDecl>(D); 3215dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 321620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!Constructor->isInvalidDecl() && 321720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 321820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConstructorTmpl) 32199aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 322086820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall /*ExplicitArgs*/ 0, 3221b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis &Initializer, 1, CandidateSet, 3222b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 322320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32249aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddOverloadCandidate(Constructor, FoundDecl, 3225b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis &Initializer, 1, CandidateSet, 3226b72db8977ed032d6425045d7e9d36e49d9b2d3f8Argyrios Kyrtzidis /*SuppressUserConversions=*/true); 322720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3228dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 322920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3230572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) 3231572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3232dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 32336b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor const RecordType *T2RecordType = 0; 32346b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor if ((T2RecordType = T2->getAs<RecordType>()) && 32356b6d01fbc297d703f7ad1e605aa97afc6289a64fDouglas Gregor !S.RequireCompleteType(Kind.getLocation(), T2, 0)) { 323620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // The type we're converting from is a class type, enumerate its conversion 323720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // functions. 323820093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); 323920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3240eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 324120093b4bf698f292c664676987541d5103b65b15Douglas Gregor = T2RecordDecl->getVisibleConversionFunctions(); 3242eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3243eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall E = Conversions->end(); I != E; ++I) { 324420093b4bf698f292c664676987541d5103b65b15Douglas Gregor NamedDecl *D = *I; 324520093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 324620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<UsingShadowDecl>(D)) 324720093b4bf698f292c664676987541d5103b65b15Douglas Gregor D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3248dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 324920093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 325020093b4bf698f292c664676987541d5103b65b15Douglas Gregor CXXConversionDecl *Conv; 325120093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 325220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 325320093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32544680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Conv = cast<CXXConversionDecl>(D); 3255dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 325620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the conversion function doesn't return a reference type, 325720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // it can't be considered for this conversion unless we're allowed to 325820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // consider rvalues. 3259dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Do we need to make sure that we only consider conversion 3260dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // candidates with reference-compatible results? That might be needed to 326120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // break recursion. 326220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if ((AllowExplicit || !Conv->isExplicit()) && 326320093b4bf698f292c664676987541d5103b65b15Douglas Gregor (AllowRValues || Conv->getConversionType()->isLValueReferenceType())){ 326420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvTemplate) 32659aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 326686820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, 3267564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor DestType, CandidateSet); 326820093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 32699aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 3270564cb06b1f010ab3c5e316ac79ba6cfdd72e9c1dDouglas Gregor Initializer, DestType, CandidateSet); 327120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 327220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 327320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3274572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) 3275572fc62b52b5b113cbaf528bd3ec00fcde19a46eJohn McCall return OR_No_Viable_Function; 3276dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 327720093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceLocation DeclLoc = Initializer->getLocStart(); 327820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3279dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 328020093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 3281dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (OverloadingResult Result 32828fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) 328320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return Result; 328403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 328520093b4bf698f292c664676987541d5103b65b15Douglas Gregor FunctionDecl *Function = Best->Function; 328603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 328725ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // This is the overload that will actually be used for the initialization, so 328825ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth // mark it as used. 328925ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth S.MarkDeclarationReferenced(DeclLoc, Function); 329025ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 329103981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Compute the returned type of the conversion. 329220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (isa<CXXConversionDecl>(Function)) 329320093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = Function->getResultType(); 329420093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 329520093b4bf698f292c664676987541d5103b65b15Douglas Gregor T2 = cv1T1; 329603981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 329703981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // Add the user-defined conversion step. 329822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 32999aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Sequence.AddUserConversionStep(Function, Best->FoundDecl, 330022c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara T2.getNonLValueExprType(S.Context), 330122c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 330203981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman 3303dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Determine whether we need to perform derived-to-base or 330403981014e4f0c3b4e935872dda96a28c2f1874eaEli Friedman // cv-qualification adjustments. 33055baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = VK_RValue; 3306906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl if (T2->isLValueReferenceType()) 33075baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = VK_LValue; 3308906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl else if (const RValueReferenceType *RRef = T2->getAs<RValueReferenceType>()) 33095baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK = RRef->getPointeeType()->isFunctionType() ? VK_LValue : VK_XValue; 3310906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 331120093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool NewDerivedToBase = false; 3312569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool NewObjCConversion = false; 3313f85e193739c953358c865005855253af4f68a497John McCall bool NewObjCLifetimeConversion = false; 331420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult NewRefRelationship 3315dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi = S.CompareReferenceRelationship(DeclLoc, T1, 33166398235d7890a81b785ea5af3b6e66d86bf184ccDouglas Gregor T2.getNonLValueExprType(S.Context), 3317f85e193739c953358c865005855253af4f68a497John McCall NewDerivedToBase, NewObjCConversion, 3318f85e193739c953358c865005855253af4f68a497John McCall NewObjCLifetimeConversion); 3319a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor if (NewRefRelationship == Sema::Ref_Incompatible) { 3320a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // If the type we've converted to is not reference-related to the 3321a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // type we're looking for, then there is another conversion step 3322a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // we need to perform to produce a temporary of the right type 3323a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor // that we'll be binding to. 3324a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ImplicitConversionSequence ICS; 3325a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.setStandard(); 3326a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor ICS.Standard = Best->FinalConversion; 3327a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor T2 = ICS.Standard.getToType(2); 3328a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor Sequence.AddConversionSequenceStep(ICS, T2); 3329a1a9f035852e35ed88f4902a855eb952cf08bebbDouglas Gregor } else if (NewDerivedToBase) 333020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 333120093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Context.getQualifiedType(T1, 3332dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi T2.getNonReferenceType().getQualifiers()), 33335baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK); 3334569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (NewObjCConversion) 3335569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3336569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, 3337569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor T2.getNonReferenceType().getQualifiers())); 3338569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 333920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (cv1T1.getQualifiers() != T2.getNonReferenceType().getQualifiers()) 33405baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK); 3341dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 334220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, !T2->isReferenceType()); 334320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return OR_Success; 334420093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 3345dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 334683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 334783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 334883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr); 334983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 3350dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// \brief Attempt reference initialization (C++0x [dcl.init.ref]) 3351dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryReferenceInitialization(Sema &S, 335220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 335320093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 335420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 335520093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3356d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 335720093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv1T1 = DestType->getAs<ReferenceType>()->getPointeeType(); 33585535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T1Quals; 33595535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); 336020093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType cv2T2 = Initializer->getType(); 33615535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth Qualifiers T2Quals; 33625535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); 33634680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 336420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // If the initializer is the address of an overloaded function, try 336520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to resolve the overloaded function. If all goes well, T2 is the 336620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type of the resulting function. 336713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, 336813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1, Sequence)) 336913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl return; 337013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 337113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Delegate everything else to a subfunction. 337213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, 337313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl T1Quals, cv2T2, T2, T2Quals, Sequence); 337413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl} 33754680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 337613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl/// \brief Reference initialization without resolving overloaded functions. 337713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redlstatic void TryReferenceInitializationCore(Sema &S, 337813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializedEntity &Entity, 337913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl const InitializationKind &Kind, 338013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *Initializer, 338113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv1T1, QualType T1, 338213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T1Quals, 338313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType cv2T2, QualType T2, 338413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Qualifiers T2Quals, 338513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializationSequence &Sequence) { 338613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType DestType = Entity.getType(); 338713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl SourceLocation DeclLoc = Initializer->getLocStart(); 338820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Compute some basic properties of the types and the initializer. 338920093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isLValueRef = DestType->isLValueReferenceType(); 339020093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool isRValueRef = !isLValueRef; 339120093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool DerivedToBase = false; 3392569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor bool ObjCConversion = false; 3393f85e193739c953358c865005855253af4f68a497John McCall bool ObjCLifetimeConversion = false; 33944680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Expr::Classification InitCategory = Initializer->Classify(S.Context); 339520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sema::ReferenceCompareResult RefRelationship 3396569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, DerivedToBase, 3397f85e193739c953358c865005855253af4f68a497John McCall ObjCConversion, ObjCLifetimeConversion); 33984680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 339920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p5: 3400dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // A reference to type "cv1 T1" is initialized by an expression of type 340120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // "cv2 T2" as follows: 340220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3403dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the reference is an lvalue reference and the initializer 340420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // expression 34054680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // Note the analogous bullet points for rvlaue refs to functions. Because 34064680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // there are no function rvalues in C++, rvalue refs to functions are treated 34074680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // like lvalue refs. 340820093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadingResult ConvOvlResult = OR_Success; 34094680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl bool T1Function = T1->isFunctionType(); 34104680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (isLValueRef || T1Function) { 3411dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (InitCategory.isLValue() && 341214d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3413dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 341414d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related))) { 3415dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - is an lvalue (but is not a bit-field), and "cv1 T1" is 341620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // reference-compatible with "cv2 T2," or 341720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 3418dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Per C++ [over.best.ics]p2, we don't diagnose whether the lvalue is a 341920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // bit-field when we're determining whether the reference initialization 3420de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // can occur. However, we do pay attention to whether it is a bit-field 3421de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // to decide whether we're actually binding to a temporary created from 3422de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor // the bit-field. 342320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DerivedToBase) 342420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddDerivedToBaseCastStep( 3425dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Context.getQualifiedType(T1, T2Quals), 34265baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue); 3427569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor else if (ObjCConversion) 3428569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor Sequence.AddObjCObjectConversionStep( 3429569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3430569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 34315535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth if (T1Quals != T2Quals) 34325baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall Sequence.AddQualificationConversionStep(cv1T1, VK_LValue); 3433de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor bool BindingTemporary = T1Quals.hasConst() && !T1Quals.hasVolatile() && 3434093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson (Initializer->getBitField() || Initializer->refersToVectorElement()); 3435de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, BindingTemporary); 343620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 343720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3438dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3439dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3440dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3441dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // lvalue of type "cv3 T3," where "cv1 T1" is reference-compatible 3442dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // with "cv3 T3" (this conversion is selected by enumerating the 344320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // applicable conversion functions (13.3.1.6) and choosing the best 344420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // one through overload resolution (13.3)), 34454680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // If we have an rvalue ref to function type here, the rhs must be 34464680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl // an rvalue. 34474680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && 34484680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl (isLValueRef || InitCategory.isRValue())) { 3449dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, Kind, 345020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer, 34514680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl /*AllowRValues=*/isRValueRef, 345220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 345320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult == OR_Success) 345420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 34551d31833450e6d2947a33cb0840d87661d92eec07John McCall if (ConvOvlResult != OR_No_Viable_Function) { 34561d31833450e6d2947a33cb0840d87661d92eec07John McCall Sequence.SetOverloadFailure( 34571d31833450e6d2947a33cb0840d87661d92eec07John McCall InitializationSequence::FK_ReferenceInitOverloadFailed, 34581d31833450e6d2947a33cb0840d87661d92eec07John McCall ConvOvlResult); 34591d31833450e6d2947a33cb0840d87661d92eec07John McCall } 346020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 346120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34624680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3463dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, the reference shall be an lvalue reference to a 346420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // non-volatile const type (i.e., cv1 shall be const), or the reference 346569d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // shall be an rvalue reference. 3466b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor if (isLValueRef && !(T1Quals.hasConst() && !T1Quals.hasVolatile())) { 34673afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 34683afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 34693afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 347020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 347120093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 347220093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3473b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor else 34744680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl Sequence.SetFailed(InitCategory.isLValue() 347520093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? (RefRelationship == Sema::Ref_Related 347620093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? InitializationSequence::FK_ReferenceInitDropsQualifiers 347720093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToUnrelated) 347820093b4bf698f292c664676987541d5103b65b15Douglas Gregor : InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); 34794680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 348020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 348120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 34824680bf233caeebe89aa297eb5a25709dd15a4b11Sebastian Redl 3483c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - If the initializer expression 3484c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // - is an xvalue, class prvalue, array prvalue, or function lvalue and 3485c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // "cv1 T1" is reference-compatible with "cv2 T2" 3486c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // Note: functions are handled below. 3487c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (!T1Function && 348814d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor (RefRelationship >= Sema::Ref_Compatible_With_Added_Qualification || 3489dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi (Kind.isCStyleOrFunctionalCast() && 349014d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor RefRelationship == Sema::Ref_Related)) && 3491c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isXValue() || 3492c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isRecordType()) || 3493c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor (InitCategory.isPRValue() && T2->isArrayType()))) { 3494c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ExprValueKind ValueKind = InitCategory.isXValue()? VK_XValue : VK_RValue; 3495c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (InitCategory.isPRValue() && T2->isRecordType()) { 3496523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The corresponding bullet in C++03 [dcl.init.ref]p5 gives the 3497523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // compiler the freedom to perform a copy here or bind to the 3498523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object, while C++0x requires that we bind directly to the 3499523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // object. Hence, we always bind to the object without making an 3500523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // extra copy. However, in C++03 requires that we check for the 3501523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // presence of a suitable copy constructor: 3502523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // 3503523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // The constructor that would be used to make the copy shall 3504523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // be callable whether or not the copy is actually done. 350562ec1f2fd7368542bb926c04797fb07023547694Francois Pichet if (!S.getLangOptions().CPlusPlus0x && !S.getLangOptions().MicrosoftExt) 3506523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor Sequence.AddExtraneousCopyToTemporary(cv2T2); 350783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith else if (S.getLangOptions().CPlusPlus0x) 350883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CheckCXX98CompatAccessibleCopy(S, Entity, Initializer); 350920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3510dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3511c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (DerivedToBase) 3512c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddDerivedToBaseCastStep(S.Context.getQualifiedType(T1, T2Quals), 3513c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor ValueKind); 3514c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor else if (ObjCConversion) 3515c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddObjCObjectConversionStep( 3516c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor S.Context.getQualifiedType(T1, T2Quals)); 3517dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3518c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T1Quals != T2Quals) 3519c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor Sequence.AddQualificationConversionStep(cv1T1, ValueKind); 3520dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi Sequence.AddReferenceBindingStep(cv1T1, 352165bfd682010f599a9a04fc7523e95e28c27508baPeter Collingbourne /*bindingTemporary=*/InitCategory.isPRValue()); 3522dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return; 3523c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor } 3524dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3525dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - has a class type (i.e., T2 is a class type), where T1 is not 3526dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // reference-related to T2, and can be implicitly converted to an 3527c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // xvalue, class prvalue, or function lvalue of type "cv3 T3", 3528c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor // where "cv1 T1" is reference-compatible with "cv3 T3", 3529c5db24dfbc860a9fd1501c72f398bf6b6d5b6e0eDouglas Gregor if (T2->isRecordType()) { 353020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (RefRelationship == Sema::Ref_Incompatible) { 353120093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult = TryRefInitWithConversionFunction(S, Entity, 353220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Kind, Initializer, 353320093b4bf698f292c664676987541d5103b65b15Douglas Gregor /*AllowRValues=*/true, 353420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence); 353520093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (ConvOvlResult) 353620093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetOverloadFailure( 353720093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 353820093b4bf698f292c664676987541d5103b65b15Douglas Gregor ConvOvlResult); 3539dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 354020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 354120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 3542dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 354320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 354420093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 354520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 35460099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi 35470099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // - Otherwise, a temporary of type "cv1 T1" is created and initialized 354820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // from the initializer expression using the rules for a non-reference 3549dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy initialization (8.5). The reference is then bound to the 355020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // temporary. [...] 3551369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 355220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine whether we are allowed to call explicit constructors or 355320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // explicit conversion operators. 355420093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool AllowExplicit = (Kind.getKind() == InitializationKind::IK_Direct); 3555369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3556369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(cv1T1); 3557369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall 3558f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 3559f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, TempEntity.getType(), 3560369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*SuppressUserConversions*/ false, 3561369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall AllowExplicit, 356214d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*FIXME:InOverloadResolution=*/false, 3563f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 3564f85e193739c953358c865005855253af4f68a497John McCall /*AllowObjCWritebackConversion=*/false); 3565f85e193739c953358c865005855253af4f68a497John McCall 3566f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isBad()) { 356720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // FIXME: Use the conversion function set stored in ICS to turn 356820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // this into an overloading ambiguity diagnostic. However, we need 356920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // to keep that set as an OverloadCandidateSet rather than as some 357020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // other kind of set. 357118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) 357218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetOverloadFailure( 357318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence::FK_ReferenceInitOverloadFailed, 357418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor ConvOvlResult); 35753afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor else if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) 35763afb97700200f629d6036e437267af9c1fd37c90Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 357718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 357818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); 357920093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 3580f85e193739c953358c865005855253af4f68a497John McCall } else { 3581f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, TempEntity.getType()); 358220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 358320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 358420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // [...] If T1 is reference-related to T2, cv1 must be the 358520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // same cv-qualification as, or greater cv-qualification 358620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // than, cv2; otherwise, the program is ill-formed. 35875535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); 35885535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); 3589dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship == Sema::Ref_Related && 35905535c38a2fcface6c13bc8bbeca66882de2fa227Chandler Carruth (T1CVRQuals | T2CVRQuals) != T1CVRQuals) { 359120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); 359220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 359320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 359420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3595dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // [...] If T1 is reference-related to T2 and the reference is an rvalue 3596b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor // reference, the initializer expression shall not be an lvalue. 3597dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (RefRelationship >= Sema::Ref_Related && !isLValueRef && 3598b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitCategory.isLValue()) { 3599b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor Sequence.SetFailed( 3600b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor InitializationSequence::FK_RValueReferenceBindingToLValue); 3601b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor return; 3602b2855ad68d93824faf47c09bbef90ba74157f0f4Douglas Gregor } 3603dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 360420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Sequence.AddReferenceBindingStep(cv1T1, /*bindingTemporary=*/true); 360520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 360620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 360720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 360820093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt character array initialization from a string literal 3609dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi/// (C++ [dcl.init.string], C99 6.7.8). 3610dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryStringLiteralInitialization(Sema &S, 361120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 361220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 361320093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 361420093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3615d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddStringInitStep(Entity.getType()); 361620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 361720093b4bf698f292c664676987541d5103b65b15Douglas Gregor 361871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor/// \brief Attempt value initialization (C++ [dcl.init]p7). 3619dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryValueInitialization(Sema &S, 362071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializedEntity &Entity, 362171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor const InitializationKind &Kind, 362271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor InitializationSequence &Sequence) { 362371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // C++ [dcl.init]p5: 362471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 362571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // To value-initialize an object of type T means: 3626d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType T = Entity.getType(); 3627dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 362871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is an array type, then each element is value-initialized; 362971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor while (const ArrayType *AT = S.Context.getAsArrayType(T)) 363071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor T = AT->getElementType(); 3631dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 363271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (const RecordType *RT = T->getAs<RecordType>()) { 363371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { 363471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // -- if T is a class type (clause 9) with a user-declared 363571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // constructor (12.1), then the default constructor for T is 363671d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // called (and the initialization is ill-formed if T has no 363771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // accessible default constructor); 363871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // 363971d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // FIXME: we really want to refer to a single subobject of the array, 364071d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor // but Entity doesn't have a way to capture that (yet). 364171d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor if (ClassDecl->hasUserDeclaredConstructor()) 364271d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 3643dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 364416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // -- if T is a (possibly cv-qualified) non-union class type 364516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // without a user-provided constructor, then the object is 36460099530a2288df7c2140dd8992b7310b9f6930a9NAKAMURA Takumi // zero-initialized and, if T's implicitly-declared default 364716006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // constructor is non-trivial, that constructor is called. 3648465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if ((ClassDecl->getTagKind() == TTK_Class || 3649ed8abf18329df67b0abcbb3a10458bd8c1d2a595Douglas Gregor ClassDecl->getTagKind() == TTK_Struct)) { 3650d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 3651dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi return TryConstructorInitialization(S, Entity, Kind, 0, 0, T, Sequence); 365216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 365371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 365471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 365571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 3656d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Sequence.AddZeroInitializationStep(Entity.getType()); 365771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor} 365871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor 365999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor/// \brief Attempt default initialization (C++ [dcl.init]p6). 366099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregorstatic void TryDefaultInitialization(Sema &S, 366199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializedEntity &Entity, 366299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor const InitializationKind &Kind, 366399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitializationSequence &Sequence) { 366499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(Kind.getKind() == InitializationKind::IK_Default); 3665dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 366699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // C++ [dcl.init]p6: 366799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // To default-initialize an object of type T means: 366899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is an array type, each element is default-initialized; 3669f85e193739c953358c865005855253af4f68a497John McCall QualType DestType = S.Context.getBaseElementType(Entity.getType()); 3670f85e193739c953358c865005855253af4f68a497John McCall 367199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - if T is a (possibly cv-qualified) class type (Clause 9), the default 367299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // constructor for T is called (and the initialization is ill-formed if 367399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // T has no accessible default constructor); 367460c93c9981c467738369702e7aa23fd58c2b6aacDouglas Gregor if (DestType->isRecordType() && S.getLangOptions().CPlusPlus) { 36754e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth TryConstructorInitialization(S, Entity, Kind, 0, 0, DestType, Sequence); 36764e6fbce4277fbc7c574fb2393c7dfe06f014c21aChandler Carruth return; 367799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 3678dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 367999a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // - otherwise, no initialization is performed. 3680dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 368199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // If a program calls for the default initialization of an object of 3682dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // a const-qualified type T, T shall be a class type with a user-provided 368399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // default constructor. 3684f85e193739c953358c865005855253af4f68a497John McCall if (DestType.isConstQualified() && S.getLangOptions().CPlusPlus) { 368599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); 3686f85e193739c953358c865005855253af4f68a497John McCall return; 3687f85e193739c953358c865005855253af4f68a497John McCall } 3688f85e193739c953358c865005855253af4f68a497John McCall 3689f85e193739c953358c865005855253af4f68a497John McCall // If the destination type has a lifetime property, zero-initialize it. 3690f85e193739c953358c865005855253af4f68a497John McCall if (DestType.getQualifiers().hasObjCLifetime()) { 3691f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddZeroInitializationStep(Entity.getType()); 3692f85e193739c953358c865005855253af4f68a497John McCall return; 3693f85e193739c953358c865005855253af4f68a497John McCall } 369499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor} 369599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 369620093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// \brief Attempt a user-defined conversion between two types (C++ [dcl.init]), 369720093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// which enumerates all conversion functions and performs overload resolution 369820093b4bf698f292c664676987541d5103b65b15Douglas Gregor/// to select the best. 3699dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic void TryUserDefinedConversion(Sema &S, 370020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 370120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 370220093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer, 370320093b4bf698f292c664676987541d5103b65b15Douglas Gregor InitializationSequence &Sequence) { 3704d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 37054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert(!DestType->isReferenceType() && "References are handled elsewhere"); 37064a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor QualType SourceType = Initializer->getType(); 37074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor assert((DestType->isRecordType() || SourceType->isRecordType()) && 37084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor "Must have a class type to perform a user-defined conversion"); 3709dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37104a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Build the candidate set directly in the initialization sequence 37114a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // structure, so that it will persist if we fail. 37124a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); 37134a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CandidateSet.clear(); 3714dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37154a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Determine whether we are allowed to call explicit constructors or 37164a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // explicit conversion operators. 37174a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor bool AllowExplicit = Kind.getKind() == InitializationKind::IK_Direct; 3718dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 37194a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { 37204a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting to is a class type. Enumerate its constructors 37214a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // to see if there is a suitable conversion. 37224a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor CXXRecordDecl *DestRecordDecl 37234a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor = cast<CXXRecordDecl>(DestRecordType->getDecl()); 3724dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3725087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Try to complete the type we're converting to. 3726dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (!S.RequireCompleteType(Kind.getLocation(), DestType, 0)) { 3727087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclContext::lookup_iterator Con, ConEnd; 3728e5eee5a52d98021de862b7965c88577598d52ccbDouglas Gregor for (llvm::tie(Con, ConEnd) = S.LookupConstructors(DestRecordDecl); 3729087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Con != ConEnd; ++Con) { 3730087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor NamedDecl *D = *Con; 3731087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor DeclAccessPair FoundDecl = DeclAccessPair::make(D, D->getAccess()); 3732dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3733087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor // Find the constructor (which may be a template). 3734087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor CXXConstructorDecl *Constructor = 0; 3735087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor FunctionTemplateDecl *ConstructorTmpl 3736087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor = dyn_cast<FunctionTemplateDecl>(D); 37374a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConstructorTmpl) 3738087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>( 3739087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor ConstructorTmpl->getTemplatedDecl()); 37404712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor else 3741087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor = cast<CXXConstructorDecl>(D); 3742dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3743087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (!Constructor->isInvalidDecl() && 3744087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor Constructor->isConvertingConstructor(AllowExplicit)) { 3745087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor if (ConstructorTmpl) 3746087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 3747087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor /*ExplicitArgs*/ 0, 3748087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor &Initializer, 1, CandidateSet, 37494712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3750087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor else 3751087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor S.AddOverloadCandidate(Constructor, FoundDecl, 3752087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor &Initializer, 1, CandidateSet, 37534712c02c1550a72612c07f5aaee455dcd8273b96Douglas Gregor /*SuppressUserConversions=*/true); 3754087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 3755dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 3756087fb7d0b5e08f34b2e28a09c376f66449f30886Douglas Gregor } 37574a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3758cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 3759cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman SourceLocation DeclLoc = Initializer->getLocStart(); 3760cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 37614a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { 37624a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // The type we're converting from is a class type, enumerate its conversion 37634a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // functions. 3764cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 376533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // We can only enumerate the conversion functions for a complete type; if 376633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman // the type isn't complete, simply skip this step. 376733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (!S.RequireCompleteType(DeclLoc, SourceType, 0)) { 376833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *SourceRecordDecl 376933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = cast<CXXRecordDecl>(SourceRecordType->getDecl()); 3770dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3771eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall const UnresolvedSetImpl *Conversions 377233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman = SourceRecordDecl->getVisibleConversionFunctions(); 3773eec51cf1ba5f0e62c9cdb81b5c63babdd6e649abJohn McCall for (UnresolvedSetImpl::const_iterator I = Conversions->begin(), 3774dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi E = Conversions->end(); 377533c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman I != E; ++I) { 377633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman NamedDecl *D = *I; 377733c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); 377833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (isa<UsingShadowDecl>(D)) 377933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman D = cast<UsingShadowDecl>(D)->getTargetDecl(); 3780dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 378133c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); 378233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CXXConversionDecl *Conv; 37834a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (ConvTemplate) 378433c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); 37854a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor else 378632daa4223ccb2c0afe5fbe151c6eb1ab64816957John McCall Conv = cast<CXXConversionDecl>(D); 3787dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 378833c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (AllowExplicit || !Conv->isExplicit()) { 378933c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman if (ConvTemplate) 37909aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddTemplateConversionCandidate(ConvTemplate, I.getPair(), 379186820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall ActingDC, Initializer, DestType, 379233c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman CandidateSet); 379333c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman else 37949aa472c45d2bd81b7b52c225e8acc560d716db97John McCall S.AddConversionCandidate(Conv, I.getPair(), ActingDC, 379586820f58e077bfd8fdf7309129b6ff2c5c4eb0e4John McCall Initializer, DestType, CandidateSet); 379633c2da9b3abdade4f0df4f90962fb8c518967fc4Eli Friedman } 37974a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37984a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 37994a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 3800dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 3801dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Perform overload resolution. If it fails, return the failed result. 38024a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor OverloadCandidateSet::iterator Best; 38031d31833450e6d2947a33cb0840d87661d92eec07John McCall if (OverloadingResult Result 38048fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = CandidateSet.BestViableFunction(S, DeclLoc, Best, true)) { 38054a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.SetOverloadFailure( 3806dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi InitializationSequence::FK_UserConversionOverloadFailed, 38074a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Result); 38084a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 38094a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 38101d31833450e6d2947a33cb0840d87661d92eec07John McCall 38114a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor FunctionDecl *Function = Best->Function; 381225ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth S.MarkDeclarationReferenced(DeclLoc, Function); 381322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 3814dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38154a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (isa<CXXConstructorDecl>(Function)) { 38164a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step. Any cv-qualification conversion is 38174a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // subsumed by the initialization. 381822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType, 381922c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38204a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor return; 38214a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 38224a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 38234a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // Add the user-defined conversion step that calls the conversion function. 38245291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor QualType ConvType = Function->getCallResultType(); 38253fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor if (ConvType->getAs<RecordType>()) { 38263fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If we're converting to a class type, there may be an copy if 38273fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // the resulting temporary object (possible to create an object of 38283fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // a base class type). That copy is not a separate conversion, so 38293fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // we just make a note of the actual destination type (possibly a 38303fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // base class of the type returned by the conversion function) and 38313fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // let the user-defined conversion step handle the conversion. 383222c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, DestType, 383322c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 38343fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor return; 38353fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor } 38364a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor 383722c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType, 383822c107b2b99887b5aec6d1fd38210031e944e31fAbramo Bagnara HadMultipleCandidates); 3839dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 38403fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // If the conversion following the call to the conversion function 38413fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // is interesting, add it as a separate step. 38424a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor if (Best->FinalConversion.First || Best->FinalConversion.Second || 38434a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Best->FinalConversion.Third) { 38444a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ImplicitConversionSequence ICS; 38451d31833450e6d2947a33cb0840d87661d92eec07John McCall ICS.setStandard(); 38464a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor ICS.Standard = Best->FinalConversion; 38474a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor Sequence.AddConversionSequenceStep(ICS, DestType); 38484a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor } 384920093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 385020093b4bf698f292c664676987541d5103b65b15Douglas Gregor 3851f85e193739c953358c865005855253af4f68a497John McCall/// The non-zero enum values here are indexes into diagnostic alternatives. 3852f85e193739c953358c865005855253af4f68a497John McCallenum InvalidICRKind { IIK_okay, IIK_nonlocal, IIK_nonscalar }; 3853f85e193739c953358c865005855253af4f68a497John McCall 3854f85e193739c953358c865005855253af4f68a497John McCall/// Determines whether this expression is an acceptable ICR source. 3855c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCallstatic InvalidICRKind isInvalidICRSource(ASTContext &C, Expr *e, 3856c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall bool isAddressOf) { 3857f85e193739c953358c865005855253af4f68a497John McCall // Skip parens. 3858f85e193739c953358c865005855253af4f68a497John McCall e = e->IgnoreParens(); 3859f85e193739c953358c865005855253af4f68a497John McCall 3860f85e193739c953358c865005855253af4f68a497John McCall // Skip address-of nodes. 3861f85e193739c953358c865005855253af4f68a497John McCall if (UnaryOperator *op = dyn_cast<UnaryOperator>(e)) { 3862f85e193739c953358c865005855253af4f68a497John McCall if (op->getOpcode() == UO_AddrOf) 3863c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, op->getSubExpr(), /*addressof*/ true); 3864f85e193739c953358c865005855253af4f68a497John McCall 3865f85e193739c953358c865005855253af4f68a497John McCall // Skip certain casts. 3866c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } else if (CastExpr *ce = dyn_cast<CastExpr>(e)) { 3867c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall switch (ce->getCastKind()) { 3868f85e193739c953358c865005855253af4f68a497John McCall case CK_Dependent: 3869f85e193739c953358c865005855253af4f68a497John McCall case CK_BitCast: 3870f85e193739c953358c865005855253af4f68a497John McCall case CK_LValueBitCast: 3871f85e193739c953358c865005855253af4f68a497John McCall case CK_NoOp: 3872c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, ce->getSubExpr(), isAddressOf); 3873f85e193739c953358c865005855253af4f68a497John McCall 3874f85e193739c953358c865005855253af4f68a497John McCall case CK_ArrayToPointerDecay: 3875f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3876f85e193739c953358c865005855253af4f68a497John McCall 3877f85e193739c953358c865005855253af4f68a497John McCall case CK_NullToPointer: 3878f85e193739c953358c865005855253af4f68a497John McCall return IIK_okay; 3879f85e193739c953358c865005855253af4f68a497John McCall 3880f85e193739c953358c865005855253af4f68a497John McCall default: 3881f85e193739c953358c865005855253af4f68a497John McCall break; 3882f85e193739c953358c865005855253af4f68a497John McCall } 3883f85e193739c953358c865005855253af4f68a497John McCall 3884f85e193739c953358c865005855253af4f68a497John McCall // If we have a declaration reference, it had better be a local variable. 3885c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } else if (isa<DeclRefExpr>(e) || isa<BlockDeclRefExpr>(e)) { 3886c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (!isAddressOf) return IIK_nonlocal; 3887c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3888c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall VarDecl *var; 3889c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (isa<DeclRefExpr>(e)) { 3890c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall var = dyn_cast<VarDecl>(cast<DeclRefExpr>(e)->getDecl()); 3891c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (!var) return IIK_nonlocal; 3892c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } else { 3893c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall var = cast<BlockDeclRefExpr>(e)->getDecl(); 3894c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall } 3895c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall 3896c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return (var->hasLocalStorage() ? IIK_okay : IIK_nonlocal); 3897f85e193739c953358c865005855253af4f68a497John McCall 3898f85e193739c953358c865005855253af4f68a497John McCall // If we have a conditional operator, check both sides. 3899f85e193739c953358c865005855253af4f68a497John McCall } else if (ConditionalOperator *cond = dyn_cast<ConditionalOperator>(e)) { 3900c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall if (InvalidICRKind iik = isInvalidICRSource(C, cond->getLHS(), isAddressOf)) 3901f85e193739c953358c865005855253af4f68a497John McCall return iik; 3902f85e193739c953358c865005855253af4f68a497John McCall 3903c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall return isInvalidICRSource(C, cond->getRHS(), isAddressOf); 3904f85e193739c953358c865005855253af4f68a497John McCall 3905f85e193739c953358c865005855253af4f68a497John McCall // These are never scalar. 3906f85e193739c953358c865005855253af4f68a497John McCall } else if (isa<ArraySubscriptExpr>(e)) { 3907f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonscalar; 3908f85e193739c953358c865005855253af4f68a497John McCall 3909f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, it needs to be a null pointer constant. 3910f85e193739c953358c865005855253af4f68a497John McCall } else { 3911f85e193739c953358c865005855253af4f68a497John McCall return (e->isNullPointerConstant(C, Expr::NPC_ValueDependentIsNull) 3912f85e193739c953358c865005855253af4f68a497John McCall ? IIK_okay : IIK_nonlocal); 3913f85e193739c953358c865005855253af4f68a497John McCall } 3914f85e193739c953358c865005855253af4f68a497John McCall 3915f85e193739c953358c865005855253af4f68a497John McCall return IIK_nonlocal; 3916f85e193739c953358c865005855253af4f68a497John McCall} 3917f85e193739c953358c865005855253af4f68a497John McCall 3918f85e193739c953358c865005855253af4f68a497John McCall/// Check whether the given expression is a valid operand for an 3919f85e193739c953358c865005855253af4f68a497John McCall/// indirect copy/restore. 3920f85e193739c953358c865005855253af4f68a497John McCallstatic void checkIndirectCopyRestoreSource(Sema &S, Expr *src) { 3921f85e193739c953358c865005855253af4f68a497John McCall assert(src->isRValue()); 3922f85e193739c953358c865005855253af4f68a497John McCall 3923c03fa498b9598fe88ef8fb97315f27d09e56aa50John McCall InvalidICRKind iik = isInvalidICRSource(S.Context, src, false); 3924f85e193739c953358c865005855253af4f68a497John McCall if (iik == IIK_okay) return; 3925f85e193739c953358c865005855253af4f68a497John McCall 3926f85e193739c953358c865005855253af4f68a497John McCall S.Diag(src->getExprLoc(), diag::err_arc_nonlocal_writeback) 3927f85e193739c953358c865005855253af4f68a497John McCall << ((unsigned) iik - 1) // shift index into diagnostic explanations 3928f85e193739c953358c865005855253af4f68a497John McCall << src->getSourceRange(); 3929f85e193739c953358c865005855253af4f68a497John McCall} 3930f85e193739c953358c865005855253af4f68a497John McCall 3931cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// \brief Determine whether we have compatible array types for the 3932cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor/// purposes of GNU by-copy array initialization. 3933cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregorstatic bool hasCompatibleArrayTypes(ASTContext &Context, 3934cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Dest, 3935cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *Source) { 3936cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the source and destination array types are equivalent, we're 3937cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // done. 3938cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Context.hasSameType(QualType(Dest, 0), QualType(Source, 0))) 3939cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return true; 3940cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3941cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Make sure that the element types are the same. 3942cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!Context.hasSameType(Dest->getElementType(), Source->getElementType())) 3943cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return false; 3944cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3945cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // The only mismatch we allow is when the destination is an 3946cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // incomplete array type and the source is a constant array type. 3947cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor return Source->isConstantArrayType() && Dest->isIncompleteArrayType(); 3948cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor} 3949cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 3950f85e193739c953358c865005855253af4f68a497John McCallstatic bool tryObjCWritebackConversion(Sema &S, 3951f85e193739c953358c865005855253af4f68a497John McCall InitializationSequence &Sequence, 3952f85e193739c953358c865005855253af4f68a497John McCall const InitializedEntity &Entity, 3953f85e193739c953358c865005855253af4f68a497John McCall Expr *Initializer) { 3954f85e193739c953358c865005855253af4f68a497John McCall bool ArrayDecay = false; 3955f85e193739c953358c865005855253af4f68a497John McCall QualType ArgType = Initializer->getType(); 3956f85e193739c953358c865005855253af4f68a497John McCall QualType ArgPointee; 3957f85e193739c953358c865005855253af4f68a497John McCall if (const ArrayType *ArgArrayType = S.Context.getAsArrayType(ArgType)) { 3958f85e193739c953358c865005855253af4f68a497John McCall ArrayDecay = true; 3959f85e193739c953358c865005855253af4f68a497John McCall ArgPointee = ArgArrayType->getElementType(); 3960f85e193739c953358c865005855253af4f68a497John McCall ArgType = S.Context.getPointerType(ArgPointee); 3961f85e193739c953358c865005855253af4f68a497John McCall } 3962f85e193739c953358c865005855253af4f68a497John McCall 3963f85e193739c953358c865005855253af4f68a497John McCall // Handle write-back conversion. 3964f85e193739c953358c865005855253af4f68a497John McCall QualType ConvertedArgType; 3965f85e193739c953358c865005855253af4f68a497John McCall if (!S.isObjCWritebackConversion(ArgType, Entity.getType(), 3966f85e193739c953358c865005855253af4f68a497John McCall ConvertedArgType)) 3967f85e193739c953358c865005855253af4f68a497John McCall return false; 3968f85e193739c953358c865005855253af4f68a497John McCall 3969f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 3970f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 3971f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 3972f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 3973f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 3974f85e193739c953358c865005855253af4f68a497John McCall 3975f85e193739c953358c865005855253af4f68a497John McCall // Do we need an lvalue conversion? 3976f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay || Initializer->isGLValue()) { 3977f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS; 3978f85e193739c953358c865005855253af4f68a497John McCall ICS.setStandard(); 3979f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.setAsIdentityConversion(); 3980f85e193739c953358c865005855253af4f68a497John McCall 3981f85e193739c953358c865005855253af4f68a497John McCall QualType ResultType; 3982f85e193739c953358c865005855253af4f68a497John McCall if (ArrayDecay) { 3983f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Array_To_Pointer; 3984f85e193739c953358c865005855253af4f68a497John McCall ResultType = S.Context.getPointerType(ArgPointee); 3985f85e193739c953358c865005855253af4f68a497John McCall } else { 3986f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First = ICK_Lvalue_To_Rvalue; 3987f85e193739c953358c865005855253af4f68a497John McCall ResultType = Initializer->getType().getNonLValueExprType(S.Context); 3988f85e193739c953358c865005855253af4f68a497John McCall } 3989f85e193739c953358c865005855253af4f68a497John McCall 3990f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddConversionSequenceStep(ICS, ResultType); 3991f85e193739c953358c865005855253af4f68a497John McCall } 3992f85e193739c953358c865005855253af4f68a497John McCall 3993f85e193739c953358c865005855253af4f68a497John McCall Sequence.AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 3994f85e193739c953358c865005855253af4f68a497John McCall return true; 3995f85e193739c953358c865005855253af4f68a497John McCall} 3996f85e193739c953358c865005855253af4f68a497John McCall 399720093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::InitializationSequence(Sema &S, 399820093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 399920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 400020093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, 40015769d6195087229770d7ac90449443e026c47103John McCall unsigned NumArgs) 40025769d6195087229770d7ac90449443e026c47103John McCall : FailedCandidateSet(Kind.getLocation()) { 400312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola ASTContext &Context = S.Context; 4004dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 400520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init]p16: 4006dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // The semantics of initializers are as follows. The destination type is 4007dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // the type of the object or reference being initialized and the source 400820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type is the type of the initializer expression. The source type is not 4009dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // defined when the initializer is a braced-init-list or when it is a 401020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // parenthesized list of expressions. 401112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola QualType DestType = Entity.getType(); 401220093b4bf698f292c664676987541d5103b65b15Douglas Gregor 401312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola if (DestType->isDependentType() || 401420093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr::hasAnyTypeDependentArguments(Args, NumArgs)) { 401520093b4bf698f292c664676987541d5103b65b15Douglas Gregor SequenceKind = DependentSequence; 401620093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 401720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 401820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 40197491c499e826682e128a400038361ebcbde30eecSebastian Redl // Almost everything is a normal sequence. 40207491c499e826682e128a400038361ebcbde30eecSebastian Redl setSequenceKind(NormalSequence); 40217491c499e826682e128a400038361ebcbde30eecSebastian Redl 4022241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall for (unsigned I = 0; I != NumArgs; ++I) 402332509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (Args[I]->getType()->isNonOverloadPlaceholderType()) { 40245acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: should we be doing this here? 402532509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall ExprResult result = S.CheckPlaceholderExpr(Args[I]); 402632509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall if (result.isInvalid()) { 402732509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall SetFailed(FK_PlaceholderType); 402832509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall return; 40295acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 403032509f1e60451d86e9fbc473b6e853ba10b5fd1eJohn McCall Args[I] = result.take(); 4031429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 4032241d5580d2f3969d2cd2a94b4a92c762b5dc1e04John McCall 40335acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 403420093b4bf698f292c664676987541d5103b65b15Douglas Gregor QualType SourceType; 403520093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr *Initializer = 0; 403699a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs == 1) { 403720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Initializer = Args[0]; 403820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (!isa<InitListExpr>(Initializer)) 403920093b4bf698f292c664676987541d5103b65b15Douglas Gregor SourceType = Initializer->getType(); 404020093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4041dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4042dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initializer is a braced-init-list, the object is 404320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // list-initialized (8.5.4). 404420093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { 404512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryListInitialization(S, Entity, Kind, InitList, *this); 4046d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor return; 404720093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4048dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 404920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a reference type, see 8.5.3. 405020093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isReferenceType()) { 405120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // C++0x [dcl.init.ref]p1: 405220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // A variable declared to be a T& or T&&, that is, "reference to type T" 405320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (8.3.2), shall be initialized by an object, or function, of type T or 405420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // by an object that can be converted into a T. 405520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (Therefore, multiple arguments are not permitted.) 405620093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (NumArgs != 1) 405712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForReference); 405820093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 405912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryReferenceInitialization(S, Entity, Kind, Args[0], *this); 406020093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 406120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4062dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 406320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the initializer is (), the object is value-initialized. 406499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (Kind.getKind() == InitializationKind::IK_Value || 406599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor (Kind.getKind() == InitializationKind::IK_Direct && NumArgs == 0)) { 406612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryValueInitialization(S, Entity, Kind, *this); 406720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 406820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4069dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 407099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // Handle default initialization. 40717663f396651716c82280f8fdcf97ad8e27c1ce5aNick Lewycky if (Kind.getKind() == InitializationKind::IK_Default) { 407212ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryDefaultInitialization(S, Entity, Kind, *this); 407399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 407499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 407518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 4076ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // - If the destination type is an array of characters, an array of 4077ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // char16_t, an array of char32_t, or an array of wchar_t, and the 4078ce6c9b7da219c8640a0559f75770cfc6622de083John McCall // initializer is a string literal, see 8.5.2. 4079dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the destination type is an array, the program is 408020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // ill-formed. 4081cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ArrayType *DestAT = Context.getAsArrayType(DestType)) { 408273076431605556fdbf28d287d084a73a24a8b8d4John McCall if (Initializer && isa<VariableArrayType>(DestAT)) { 408373076431605556fdbf28d287d084a73a24a8b8d4John McCall SetFailed(FK_VariableLengthArrayHasInitializer); 408473076431605556fdbf28d287d084a73a24a8b8d4John McCall return; 408573076431605556fdbf28d287d084a73a24a8b8d4John McCall } 408673076431605556fdbf28d287d084a73a24a8b8d4John McCall 4087cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (Initializer && IsStringInit(Initializer, DestAT, Context)) { 408812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); 4089ce6c9b7da219c8640a0559f75770cfc6622de083John McCall return; 4090ce6c9b7da219c8640a0559f75770cfc6622de083John McCall } 4091ce6c9b7da219c8640a0559f75770cfc6622de083John McCall 4092cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Note: as an GNU C extension, we allow initialization of an 4093cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // array from a compound literal that creates an array of the same 4094cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type, so long as the initializer has no side effects. 4095cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!S.getLangOptions().CPlusPlus && Initializer && 4096cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor isa<CompoundLiteralExpr>(Initializer->IgnoreParens()) && 4097cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor Initializer->getType()->isArrayType()) { 4098cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor const ArrayType *SourceAT 4099cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = Context.getAsArrayType(Initializer->getType()); 4100cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (!hasCompatibleArrayTypes(S.Context, DestAT, SourceAT)) 410112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayTypeMismatch); 4102cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else if (Initializer->HasSideEffects(S.Context)) 410312ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_NonConstantArrayInit); 4104cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor else { 410512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddArrayInitStep(DestType); 4106cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 4107cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } else if (DestAT->getElementType()->isAnyCharacterType()) 410812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitListOrStringLiteral); 410920093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 411012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_ArrayNeedsInitList); 4111dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 411220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 411320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4114cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 4115f85e193739c953358c865005855253af4f68a497John McCall // Determine whether we should consider writeback conversions for 4116f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC. 4117f85e193739c953358c865005855253af4f68a497John McCall bool allowObjCWritebackConversion = S.getLangOptions().ObjCAutoRefCount && 4118f85e193739c953358c865005855253af4f68a497John McCall Entity.getKind() == InitializedEntity::EK_Parameter; 4119f85e193739c953358c865005855253af4f68a497John McCall 4120f85e193739c953358c865005855253af4f68a497John McCall // We're at the end of the line for C: it's either a write-back conversion 4121f85e193739c953358c865005855253af4f68a497John McCall // or it's a C assignment. There's no need to check anything else. 4122cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman if (!S.getLangOptions().CPlusPlus) { 4123f85e193739c953358c865005855253af4f68a497John McCall // If allowed, check whether this is an Objective-C writeback conversion. 4124f85e193739c953358c865005855253af4f68a497John McCall if (allowObjCWritebackConversion && 412512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola tryObjCWritebackConversion(S, *this, Entity, Initializer)) { 4126f85e193739c953358c865005855253af4f68a497John McCall return; 4127f85e193739c953358c865005855253af4f68a497John McCall } 4128f85e193739c953358c865005855253af4f68a497John McCall 4129f85e193739c953358c865005855253af4f68a497John McCall // Handle initialization in C 413012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddCAssignmentStep(DestType); 413112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 4132cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman return; 4133cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 4134dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4135f85e193739c953358c865005855253af4f68a497John McCall assert(S.getLangOptions().CPlusPlus); 4136f85e193739c953358c865005855253af4f68a497John McCall 413720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - If the destination type is a (possibly cv-qualified) class type: 413820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (DestType->isRecordType()) { 4139dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - If the initialization is direct-initialization, or if it is 4140dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // copy-initialization where the cv-unqualified version of the 4141dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // source type is the same class as, or a derived class of, the 414220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // class of the destination, constructors are considered. [...] 414320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Direct || 414420093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Kind.getKind() == InitializationKind::IK_Copy && 414520093b4bf698f292c664676987541d5103b65b15Douglas Gregor (Context.hasSameUnqualifiedType(SourceType, DestType) || 414620093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.IsDerivedFrom(SourceType, DestType)))) 4147dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TryConstructorInitialization(S, Entity, Kind, Args, NumArgs, 414812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola Entity.getType(), *this); 4149dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise (i.e., for the remaining copy-initialization cases), 415020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // user-defined conversion sequences that can convert from the source 4151dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // type to the destination type or (when a conversion function is 415220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // used) to a derived class thereof are enumerated as described in 415320093b4bf698f292c664676987541d5103b65b15Douglas Gregor // 13.3.1.4, and the best one is chosen through overload resolution 415420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // (13.3). 415520093b4bf698f292c664676987541d5103b65b15Douglas Gregor else 415612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 415720093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 415820093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4159dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 416099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (NumArgs > 1) { 416112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(FK_TooManyInitsForScalar); 416299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return; 416399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor } 416499a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor assert(NumArgs == 1 && "Zero-argument case handled above"); 4165dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4166dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // - Otherwise, if the source type is a (possibly cv-qualified) class 416720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // type, conversion functions are considered. 416899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (!SourceType.isNull() && SourceType->isRecordType()) { 416912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola TryUserDefinedConversion(S, Entity, Kind, Initializer, *this); 417012ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 417120093b4bf698f292c664676987541d5103b65b15Douglas Gregor return; 417220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4173dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 417420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // - Otherwise, the initial value of the object being initialized is the 41754a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor // (possibly converted) value of the initializer expression. Standard 417620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // conversions (Clause 4) will be used, if necessary, to convert the 4177dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // initializer expression to the cv-unqualified version of the 417820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // destination type; no user-defined conversions are considered. 4179f85e193739c953358c865005855253af4f68a497John McCall 4180f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence ICS 4181f85e193739c953358c865005855253af4f68a497John McCall = S.TryImplicitConversion(Initializer, Entity.getType(), 4182f85e193739c953358c865005855253af4f68a497John McCall /*SuppressUserConversions*/true, 4183369371ce0c2b0d8051a8089e620eb41513fce9a2John McCall /*AllowExplicitConversions*/ false, 418414d0aee957f11b9613fa4312919bec3cc5456a1cDouglas Gregor /*InOverloadResolution*/ false, 4185f85e193739c953358c865005855253af4f68a497John McCall /*CStyle=*/Kind.isCStyleOrFunctionalCast(), 4186f85e193739c953358c865005855253af4f68a497John McCall allowObjCWritebackConversion); 4187f85e193739c953358c865005855253af4f68a497John McCall 4188f85e193739c953358c865005855253af4f68a497John McCall if (ICS.isStandard() && 4189f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.Second == ICK_Writeback_Conversion) { 4190f85e193739c953358c865005855253af4f68a497John McCall // Objective-C ARC writeback conversion. 4191f85e193739c953358c865005855253af4f68a497John McCall 4192f85e193739c953358c865005855253af4f68a497John McCall // We should copy unless we're passing to an argument explicitly 4193f85e193739c953358c865005855253af4f68a497John McCall // marked 'out'. 4194f85e193739c953358c865005855253af4f68a497John McCall bool ShouldCopy = true; 4195f85e193739c953358c865005855253af4f68a497John McCall if (ParmVarDecl *Param = cast_or_null<ParmVarDecl>(Entity.getDecl())) 4196f85e193739c953358c865005855253af4f68a497John McCall ShouldCopy = (Param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); 4197f85e193739c953358c865005855253af4f68a497John McCall 4198f85e193739c953358c865005855253af4f68a497John McCall // If there was an lvalue adjustment, add it as a separate conversion. 4199f85e193739c953358c865005855253af4f68a497John McCall if (ICS.Standard.First == ICK_Array_To_Pointer || 4200f85e193739c953358c865005855253af4f68a497John McCall ICS.Standard.First == ICK_Lvalue_To_Rvalue) { 4201f85e193739c953358c865005855253af4f68a497John McCall ImplicitConversionSequence LvalueICS; 4202f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.setStandard(); 4203f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAsIdentityConversion(); 4204f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.setAllToTypes(ICS.Standard.getToType(0)); 4205f85e193739c953358c865005855253af4f68a497John McCall LvalueICS.Standard.First = ICS.Standard.First; 420612ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(LvalueICS, ICS.Standard.getToType(0)); 4207f85e193739c953358c865005855253af4f68a497John McCall } 420812ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola 420912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); 4210f85e193739c953358c865005855253af4f68a497John McCall } else if (ICS.isBad()) { 42111be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor DeclAccessPair dap; 42121be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor if (Initializer->getType() == Context.OverloadTy && 42131be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor !S.ResolveAddressOfOverloadedFunction(Initializer 42141be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor , DestType, false, dap)) 421512ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); 42168e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor else 421712ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola SetFailed(InitializationSequence::FK_ConversionFailed); 4218f85e193739c953358c865005855253af4f68a497John McCall } else { 421912ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola AddConversionSequenceStep(ICS, Entity.getType()); 4220856d3798af7c2f7251e4a295f3da7a09ce4c62abJohn McCall 422112ce0a085f89f07c76bf034aa6b838ef50542241Rafael Espindola MaybeProduceObjCObject(S, *this, Entity); 42228e960435696b4ccf6a8ad0ed0530e3280b77af8bDouglas Gregor } 422320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 422420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 422520093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::~InitializationSequence() { 42265f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<Step>::iterator Step = Steps.begin(), 422720093b4bf698f292c664676987541d5103b65b15Douglas Gregor StepEnd = Steps.end(); 422820093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) 422920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step->Destroy(); 423020093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 423120093b4bf698f292c664676987541d5103b65b15Douglas Gregor 423220093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 423320093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Perform initialization 423420093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 4235dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumistatic Sema::AssignmentAction 423618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorgetAssignmentAction(const InitializedEntity &Entity) { 423718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch(Entity.getKind()) { 423818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 423918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 4240a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Exception: 4241a3998bd364f8c6b4a520f479083da1d6e30482a1Douglas Gregor case InitializedEntity::EK_Base: 4242059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 424318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 424418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 424518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 4246dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (Entity.getDecl() && 4247688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) 4248688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor return Sema::AA_Sending; 4249688fc9b9b4323a294f5bf4f8a83f7c365edec573Douglas Gregor 425018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Passing; 425118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 425218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Result: 425318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Returning; 425418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 425518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 425618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor // FIXME: Can we tell apart casting vs. converting? 425718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Casting; 4258dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 425918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Member: 4260d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_ArrayElement: 4261d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42620c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4263310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 426418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Initializing; 426518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 426618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 426718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return Sema::AA_Converting; 426818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 426918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42704154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether we should binding a created object as a temporary when 42714154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// initializing the given entity. 42722f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregorstatic bool shouldBindAsTemporary(const InitializedEntity &Entity) { 427318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor switch (Entity.getKind()) { 42741b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_ArrayElement: 42751b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson case InitializedEntity::EK_Member: 42762f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor case InitializedEntity::EK_Result: 427718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_New: 427818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Variable: 427918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Base: 4280059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 4281d3d824d45c32d457493e7cb79cc34a4761afb760Anders Carlsson case InitializedEntity::EK_VectorElement: 42820c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4283a508b7de6c5246ab04ed69d0ab4e9977ec1fb4d4Anders Carlsson case InitializedEntity::EK_Exception: 4284310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 428518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return false; 4286dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 428718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Parameter: 428818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case InitializedEntity::EK_Temporary: 428918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return true; 429018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 4291dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 429218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor llvm_unreachable("missed an InitializedEntity kind?"); 429318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 429418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 42954154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// \brief Whether the given entity, when initialized with an object 42964154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor/// created for that initialization, requires destruction. 42974154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregorstatic bool shouldDestroyTemporary(const InitializedEntity &Entity) { 42984154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor switch (Entity.getKind()) { 42994154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Member: 43004154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Result: 43014154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_New: 43024154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Base: 4303059ce0d92eb5a7da900ae735dc0a2ea3d64f4b0bSean Hunt case InitializedEntity::EK_Delegating: 43044154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_VectorElement: 43050c706c29f20b6fa36759fa41333b9c3ec0bd2969Eli Friedman case InitializedEntity::EK_ComplexElement: 4306310b1c421665241d9b135c517d5031716d4a3221Fariborz Jahanian case InitializedEntity::EK_BlockElement: 43074154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return false; 4308dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 43094154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Variable: 43104154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Parameter: 43114154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Temporary: 43124154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_ArrayElement: 43134154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor case InitializedEntity::EK_Exception: 43144154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor return true; 43154154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 4316dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4317dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi llvm_unreachable("missed an InitializedEntity kind?"); 43184154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor} 43194154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor 432083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Look for copy and move constructors and constructor templates, for 432183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// copying an object via direct-initialization (per C++11 [dcl.init]p16). 432283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void LookupCopyAndMoveConstructors(Sema &S, 432383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet &CandidateSet, 432483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXRecordDecl *Class, 432583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 432683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclContext::lookup_iterator Con, ConEnd; 432783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith for (llvm::tie(Con, ConEnd) = S.LookupConstructors(Class); 432883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Con != ConEnd; ++Con) { 432983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CXXConstructorDecl *Constructor = 0; 433083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 433183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if ((Constructor = dyn_cast<CXXConstructorDecl>(*Con))) { 433283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle copy/moveconstructors, only. 433383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor || Constructor->isInvalidDecl() || 433483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isCopyOrMoveConstructor() || 433583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith !Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 433683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 433783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 433883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 433983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(Constructor, Constructor->getAccess()); 434083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddOverloadCandidate(Constructor, FoundDecl, 434183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith &CurInitExpr, 1, CandidateSet); 434283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 434483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 434583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Handle constructor templates. 434683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith FunctionTemplateDecl *ConstructorTmpl = cast<FunctionTemplateDecl>(*Con); 434783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (ConstructorTmpl->isInvalidDecl()) 434883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 434983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 435083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Constructor = cast<CXXConstructorDecl>( 435183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith ConstructorTmpl->getTemplatedDecl()); 435283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Constructor->isConvertingConstructor(/*AllowExplicit=*/true)) 435383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith continue; 435483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 435583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Do we need to limit this to copy-constructor-like 435683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // candidates? 435783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith DeclAccessPair FoundDecl 435883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith = DeclAccessPair::make(ConstructorTmpl, ConstructorTmpl->getAccess()); 435983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.AddTemplateOverloadCandidate(ConstructorTmpl, FoundDecl, 0, 436083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith &CurInitExpr, 1, CandidateSet, true); 436183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 436283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 436383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 436483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Get the location at which initialization diagnostics should appear. 436583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic SourceLocation getInitializationLoc(const InitializedEntity &Entity, 436683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *Initializer) { 436783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (Entity.getKind()) { 436883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Result: 436983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getReturnLoc(); 437083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 437183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Exception: 437283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getThrowLoc(); 437383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 437483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Variable: 437583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Entity.getDecl()->getLocation(); 437683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 437783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ArrayElement: 437883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Member: 437983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Parameter: 438083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Temporary: 438183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_New: 438283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Base: 438383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_Delegating: 438483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_VectorElement: 438583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_ComplexElement: 438683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case InitializedEntity::EK_BlockElement: 438783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return Initializer->getLocStart(); 438883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 438983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith llvm_unreachable("missed an InitializedEntity kind?"); 439083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 439183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4392523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \brief Make a (potentially elidable) temporary copy of the object 4393523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// provided by the given initializer by calling the appropriate copy 4394523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// constructor. 4395523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4396523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param S The Sema object used for type-checking. 4397523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 439863e7d25d2e6036616b42f744fd4a39cd5f911960Abramo Bagnara/// \param T The type of the temporary object, which must either be 4399523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// the type of the initializer expression or a superclass thereof. 4400523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4401523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param Enter The entity being initialized. 4402523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4403523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param CurInit The initializer expression. 4404523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4405523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \param IsExtraneousCopy Whether this is an "extraneous" copy that 4406523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// is permitted in C++03 (but not C++0x) when binding a reference to 4407523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// an rvalue. 4408523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// 4409523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// \returns An expression that copies the initializer expression into 4410523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// a temporary object, or an error expression if a copy could not be 4411523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor/// created. 441260d7b3a319d84d688752be3870615ac0f111fb16John McCallstatic ExprResult CopyObject(Sema &S, 44138fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor QualType T, 44148fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor const InitializedEntity &Entity, 44158fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor ExprResult CurInit, 44168fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor bool IsExtraneousCopy) { 44173fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine which class type we're copying to. 44181b36a2fcb2cea310c01fc2a80a9da915e5d2ceb0Anders Carlsson Expr *CurInitExpr = (Expr *)CurInit.get(); 4419dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXRecordDecl *Class = 0; 4420523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) 44212f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor Class = cast<CXXRecordDecl>(Record->getDecl()); 44222f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (!Class) 44232f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor return move(CurInit); 44242f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor 4425f5d8f466c3eebaffc51468812bdcbe7f0fe4891aDouglas Gregor // C++0x [class.copy]p32: 44262f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // When certain criteria are met, an implementation is allowed to 44272f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // omit the copy/move construction of a class object, even if the 44282f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // copy/move constructor and/or destructor for the object have 44292f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // side effects. [...] 44302f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // - when a temporary class object that has not been bound to a 44312f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // reference (12.2) would be copied/moved to a class object 44322f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // with the same cv-unqualified type, the copy/move operation 44332f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // can be omitted by constructing the temporary object 44342f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // directly into the target of the omitted copy/move 4435dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // 44362f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor // Note that the other three bullets are handled elsewhere. Copy 44373c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // elision for return statements and throw expressions are handled as part 4438dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // of constructor initialization, while copy elision for exception handlers 44393c9034cb7ff1d6c1e4ecd1b44c98f553df013c7cDouglas Gregor // is handled by the run-time. 4440558d2abc7f9fd6801cc7677200992313ae90b5d8John McCall bool Elidable = CurInitExpr->isTemporaryObject(S.Context, Class); 444183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInit.get()); 4442f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4443dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Make sure that the type we are copying is complete. 4444f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor if (S.RequireCompleteType(Loc, T, S.PDiag(diag::err_temp_copy_incomplete))) 4445f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor return move(CurInit); 4446f86fcb341116e72c5497e6b57695f46eca5f29e9Douglas Gregor 4447cc15f010672a13b38104a32e3cefc7adc07ffbf7Douglas Gregor // Perform overload resolution using the class's copy/move constructors. 444883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Only consider constructors and constructor templates. Per 444983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // C++0x [dcl.init]p16, second bullet to class types, this initialization 445083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // is direct-initialization. 44515769d6195087229770d7ac90449443e026c47103John McCall OverloadCandidateSet CandidateSet(Loc); 445283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors(S, CandidateSet, Class, CurInitExpr); 4453dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 44547cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = (CandidateSet.size() > 1); 44557cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara 445618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor OverloadCandidateSet::iterator Best; 445725ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth switch (CandidateSet.BestViableFunction(S, Loc, Best)) { 445818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Success: 445918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4460dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 446118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_No_Viable_Function: 446257d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin S.Diag(Loc, IsExtraneousCopy && !S.isSFINAEContext() 446357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin ? diag::ext_rvalue_to_reference_temp_copy_no_viable 446457d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin : diag::err_temp_copy_no_viable) 44657abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 446618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 4467120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall CandidateSet.NoteCandidates(S, OCD_AllCandidates, &CurInitExpr, 1); 446857d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin if (!IsExtraneousCopy || S.isSFINAEContext()) 4469f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 447057d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin return move(CurInit); 4471dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 447218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Ambiguous: 447318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_ambiguous) 44747abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 447518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 4476120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall CandidateSet.NoteCandidates(S, OCD_ViableCandidates, &CurInitExpr, 1); 4477f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4478dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 447918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case OR_Deleted: 448018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Loc, diag::err_temp_copy_deleted) 44817abfbdbc97ad8e7f340789f751df1e32b10118b4Douglas Gregor << (int)Entity.getKind() << CurInitExpr->getType() 448218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << CurInitExpr->getSourceRange(); 448318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 4484f85e193739c953358c865005855253af4f68a497John McCall << 1 << Best->Function->isDeleted(); 4485f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 448618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 448718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 44883fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); 4489ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 44903fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 4491523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 44929a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Loc, Constructor, Entity, 449357d12fd4a2bc739c4a4d62a364b7f08cd483c59eJeffrey Yasskin Best->FoundDecl.getAccess(), IsExtraneousCopy); 4494523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4495523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor if (IsExtraneousCopy) { 4496523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // If this is a totally extraneous copy for C++03 reference 4497523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // binding purposes, just return the original initialization 44982559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // expression. We don't generate an (elided) copy operation here 44992559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // because doing so would require us to pass down a flag to avoid 45002559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // infinite recursion, where each step adds another extraneous, 45012559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // elidable copy. 45022559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 45032559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Instantiate the default arguments of any extra parameters in 45042559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // the selected copy constructor, as if we were going to create a 45052559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // proper call to the copy constructor. 45062559a7045a74679c80376305397a5953d038e1d0Douglas Gregor for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { 45072559a7045a74679c80376305397a5953d038e1d0Douglas Gregor ParmVarDecl *Parm = Constructor->getParamDecl(I); 45082559a7045a74679c80376305397a5953d038e1d0Douglas Gregor if (S.RequireCompleteType(Loc, Parm->getType(), 45092559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.PDiag(diag::err_call_incomplete_argument))) 45102559a7045a74679c80376305397a5953d038e1d0Douglas Gregor break; 45112559a7045a74679c80376305397a5953d038e1d0Douglas Gregor 45122559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // Build the default argument expression; we don't actually care 45132559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if this succeeds or not, because this routine will complain 45142559a7045a74679c80376305397a5953d038e1d0Douglas Gregor // if there was a problem. 45152559a7045a74679c80376305397a5953d038e1d0Douglas Gregor S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); 45162559a7045a74679c80376305397a5953d038e1d0Douglas Gregor } 4517523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 4518523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor return S.Owned(CurInitExpr); 4519523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor } 4520dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 452125ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth S.MarkDeclarationReferenced(Loc, Constructor); 452225ca421a6049350a2748c8fd0c19a052eba6ae99Chandler Carruth 45233fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor // Determine the arguments required to actually perform the 4524523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // constructor call (we might have derived-to-base conversions, or 4525523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor // the copy constructor may have default arguments). 4526f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall if (S.CompleteConstructorCall(Constructor, MultiExprArg(&CurInitExpr, 1), 45273fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor Loc, ConstructorArgs)) 4528f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 45293fbaf3e5d524bfff219d1e3e9ac4801a8411590fDouglas Gregor 4530b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // Actually perform the constructor call. 4531b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.BuildCXXConstructExpr(Loc, T, Constructor, Elidable, 45327a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 45337cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 45347a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 4535428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 4536428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 4537dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4538b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor // If we're supposed to bind temporaries, do so. 4539b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) 4540b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 4541b86cf0c11712fa89f14197f3f0ed862e7b2add84Douglas Gregor return move(CurInit); 454218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 454320093b4bf698f292c664676987541d5103b65b15Douglas Gregor 454483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// \brief Check whether elidable copy construction for binding a reference to 454583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// a temporary would have succeeded if we were building in C++98 mode, for 454683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith/// -Wc++98-compat. 454783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smithstatic void CheckCXX98CompatAccessibleCopy(Sema &S, 454883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const InitializedEntity &Entity, 454983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Expr *CurInitExpr) { 455083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith assert(S.getLangOptions().CPlusPlus0x); 455183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 455283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith const RecordType *Record = CurInitExpr->getType()->getAs<RecordType>(); 455383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (!Record) 455483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 455583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 455683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith SourceLocation Loc = getInitializationLoc(Entity, CurInitExpr); 455783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith if (S.Diags.getDiagnosticLevel(diag::warn_cxx98_compat_temp_copy, Loc) 455883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith == DiagnosticsEngine::Ignored) 455983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith return; 456083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Find constructors which would have been considered. 456283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet CandidateSet(Loc); 456383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith LookupCopyAndMoveConstructors( 456483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S, CandidateSet, cast<CXXRecordDecl>(Record->getDecl()), CurInitExpr); 456583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 456683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // Perform overload resolution. 456783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadCandidateSet::iterator Best; 456883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith OverloadingResult OR = CandidateSet.BestViableFunction(S, Loc, Best); 456983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith PartialDiagnostic Diag = S.PDiag(diag::warn_cxx98_compat_temp_copy) 457183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << OR << (int)Entity.getKind() << CurInitExpr->getType() 457283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << CurInitExpr->getSourceRange(); 457383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 457483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith switch (OR) { 457583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Success: 457683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.CheckConstructorAccess(Loc, cast<CXXConstructorDecl>(Best->Function), 457783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith Best->FoundDecl.getAccess(), Diag); 457883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith // FIXME: Check default arguments as far as that's possible. 457983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 458083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_No_Viable_Function: 458283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 458383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CandidateSet.NoteCandidates(S, OCD_AllCandidates, &CurInitExpr, 1); 458483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 458583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 458683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Ambiguous: 458783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 458883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith CandidateSet.NoteCandidates(S, OCD_ViableCandidates, &CurInitExpr, 1); 458983da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 459083da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 459183da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith case OR_Deleted: 459283da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Loc, Diag); 459383da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 459483da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith << 1 << Best->Function->isDeleted(); 459583da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith break; 459683da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith } 459783da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith} 459883da2e711902c4c54f5601c9000d646dfff06aeaRichard Smith 4599a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregorvoid InitializationSequence::PrintInitLocationNote(Sema &S, 4600a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor const InitializedEntity &Entity) { 4601a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Parameter && Entity.getDecl()) { 4602a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getLocation().isInvalid()) 4603a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor return; 4604a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 4605a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor if (Entity.getDecl()->getDeclName()) 4606a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) 4607a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor << Entity.getDecl()->getDeclName(); 4608a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor else 4609a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); 4610a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } 4611a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor} 4612a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor 46133b80232b50c29b245e674f5aa02047b408e41018Sebastian Redlstatic bool isReferenceBinding(const InitializationSequence::Step &s) { 46143b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl return s.Kind == InitializationSequence::SK_BindReference || 46153b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl s.Kind == InitializationSequence::SK_BindReferenceToTemporary; 46163b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl} 46173b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl 461810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redlstatic ExprResult 461910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian RedlPerformConstructorInitialization(Sema &S, 462010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializedEntity &Entity, 462110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationKind &Kind, 462210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Args, 462310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl const InitializationSequence::Step& Step, 462410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool &ConstructorInitRequiresZeroInit) { 462510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumArgs = Args.size(); 462610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructorDecl *Constructor 462710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl = cast<CXXConstructorDecl>(Step.Function.Function); 462810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl bool HadMultipleCandidates = Step.Function.HadMultipleCandidates; 462910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 463010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Build a call to the selected constructor. 463110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ASTOwningVector<Expr*> ConstructorArgs(S); 463210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) 463310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ? Kind.getEqualLoc() 463410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl : Kind.getLocation(); 463510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 463610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Kind.getKind() == InitializationKind::IK_Default) { 463710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Force even a trivial, implicit default constructor to be 463810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // semantically checked. We do this explicitly because we don't build 463910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // the definition for completely trivial constructors. 464010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXRecordDecl *ClassDecl = Constructor->getParent(); 464110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl assert(ClassDecl && "No parent class for constructor."); 464210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Constructor->isDefaulted() && Constructor->isDefaultConstructor() && 464310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ClassDecl->hasTrivialDefaultConstructor() && 464410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl !Constructor->isUsed(false)) 464510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DefineImplicitDefaultConstructor(Loc, Constructor); 464610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 464710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 464810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ExprResult CurInit = S.Owned((Expr *)0); 464910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Determine the arguments required to actually perform the constructor 465110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // call. 465210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (S.CompleteConstructorCall(Constructor, move(Args), 465310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Loc, ConstructorArgs)) 465410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 465510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 465710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Temporary && 465810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl NumArgs != 1 && // FIXME: Hack to work around cast weirdness 465910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl (Kind.getKind() == InitializationKind::IK_Direct || 466010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Value)) { 466110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // An explicitly-constructed temporary, e.g., X(1, 2). 466210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl unsigned NumExprs = ConstructorArgs.size(); 466310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Expr **Exprs = (Expr **)ConstructorArgs.take(); 466410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.MarkDeclarationReferenced(Loc, Constructor); 466510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Constructor, Loc); 466610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 466710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 466810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (!TSInfo) 466910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo = S.Context.getTrivialTypeSourceInfo(Entity.getType(), Loc); 467010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 467110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.Owned(new (S.Context) CXXTemporaryObjectExpr(S.Context, 467210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 467310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl TSInfo, 467410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Exprs, 467510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl NumExprs, 467610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getParenRange(), 467710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 467810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit)); 467910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else { 468010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::ConstructionKind ConstructKind = 468110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_Complete; 468210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 468310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.getKind() == InitializedEntity::EK_Base) { 468410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? 468510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_VirtualBase : 468610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CXXConstructExpr::CK_NonVirtualBase; 468710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } else if (Entity.getKind() == InitializedEntity::EK_Delegating) { 468810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind = CXXConstructExpr::CK_Delegating; 468910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 469010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 469110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only get the parenthesis range if it is a direct construction. 469210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl SourceRange parenRange = 469310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getKind() == InitializationKind::IK_Direct ? 469410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Kind.getParenRange() : SourceRange(); 469510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 469610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // If the entity allows NRVO, mark the construction as elidable 469710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // unconditionally. 469810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (Entity.allowsNRVO()) 469910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 470010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, /*Elidable=*/true, 470110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move_arg(ConstructorArgs), 470210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 470310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 470410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 470510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 470610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl else 470710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.BuildCXXConstructExpr(Loc, Entity.getType(), 470810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Constructor, 470910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move_arg(ConstructorArgs), 471010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl HadMultipleCandidates, 471110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit, 471210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructKind, 471310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl parenRange); 471410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 471510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (CurInit.isInvalid()) 471610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return ExprError(); 471710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 471810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl // Only check access if all of that succeeded. 471910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.CheckConstructorAccess(Loc, Constructor, Entity, 472010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl Step.Function.FoundDecl.getAccess()); 472110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl S.DiagnoseUseOfDecl(Step.Function.FoundDecl, Loc); 472210f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 472310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl if (shouldBindAsTemporary(Entity)) 472410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 472510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 472610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl return move(CurInit); 472710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl} 472810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl 4729dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 473020093b4bf698f292c664676987541d5103b65b15Douglas GregorInitializationSequence::Perform(Sema &S, 473120093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 473220093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 4733f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall MultiExprArg Args, 4734d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor QualType *ResultType) { 4735d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (Failed()) { 473620093b4bf698f292c664676987541d5103b65b15Douglas Gregor unsigned NumArgs = Args.size(); 473720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Diagnose(S, Entity, Kind, (Expr **)Args.release(), NumArgs); 4738f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 473920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4740dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 47417491c499e826682e128a400038361ebcbde30eecSebastian Redl if (getKind() == DependentSequence) { 4742d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // If the declaration is a non-dependent, incomplete array type 4743d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // that has an initializer, then its type will be completed once 4744d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // the initializer is instantiated. 4745d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (ResultType && !Entity.getType()->isDependentType() && 4746d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Args.size() == 1) { 4747d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DeclType = Entity.getType(); 4748d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (const IncompleteArrayType *ArrayT 4749d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getAsIncompleteArrayType(DeclType)) { 4750d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // FIXME: We don't currently have the ability to accurately 4751d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // compute the length of an initializer list without 4752d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // performing full type-checking of the initializer list 4753d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // (since we have to determine where braces are implicitly 4754d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // introduced and such). So, we fall back to making the array 4755d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // type a dependently-sized array type with no specified 4756d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // bound. 4757d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (isa<InitListExpr>((Expr *)Args.get()[0])) { 4758d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor SourceRange Brackets; 4759d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor 4760d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor // Scavange the location of the brackets from the entity, if we can. 4761d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (DeclaratorDecl *DD = Entity.getDecl()) { 4762d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { 4763d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor TypeLoc TL = TInfo->getTypeLoc(); 4764d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor if (IncompleteArrayTypeLoc *ArrayLoc 4765d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor = dyn_cast<IncompleteArrayTypeLoc>(&TL)) 4766d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Brackets = ArrayLoc->getBracketsRange(); 4767d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor } 4768d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4769d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4770d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor *ResultType 4771d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), 4772d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor /*NumElts=*/0, 4773d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getSizeModifier(), 4774d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor ArrayT->getIndexTypeCVRQualifiers(), 4775d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor Brackets); 4776d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4777d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 4778d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 4779d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 47800d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek assert(Kind.getKind() == InitializationKind::IK_Copy || 47810d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek Kind.isExplicitCast()); 47820d9106fc97cde979a995e26b18bcd2643f8afb55Manuel Klimek return ExprResult(Args.release()[0]); 478320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 478420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 47857491c499e826682e128a400038361ebcbde30eecSebastian Redl // No steps means no initialization. 47867491c499e826682e128a400038361ebcbde30eecSebastian Redl if (Steps.empty()) 478799a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor return S.Owned((Expr *)0); 4788dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4789d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType().getNonReferenceType(); 4790d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor // FIXME: Ugly hack around the fact that Entity.getType() is not 4791a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // the same as Entity.getDecl()->getType() in cases involving type merging, 4792a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman // and we want latter when it makes sense. 4793d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor if (ResultType) 4794a91eb541a6adf81acf872e7315bc6b814c3241ebEli Friedman *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : 4795d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor Entity.getType(); 479620093b4bf698f292c664676987541d5103b65b15Douglas Gregor 479760d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult CurInit = S.Owned((Expr *)0); 4798dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4799dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // For initialization steps that start with a single initializer, 480099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // grab the only argument out the Args and place it into the "current" 480199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor // initializer. 480299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor switch (Steps.front().Kind) { 480318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ResolveAddressOfOverloadedFunction: 480418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseRValue: 4805906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 480618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CastDerivedToBaseLValue: 480718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReference: 480818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_BindReferenceToTemporary: 4809523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 481018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_UserConversion: 481118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionLValue: 4812906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 481318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_QualificationConversionRValue: 481418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConversionSequence: 48158713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 481618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ListInitialization: 481713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 481813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 481918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: 4820cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: 4821cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ObjCObjectConversion: 4822f85e193739c953358c865005855253af4f68a497John McCall case SK_ArrayInit: 4823f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 4824f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 4825f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: { 482618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(Args.size() == 1); 4827429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = Args.get()[0]; 4828429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (!CurInit.get()) return ExprError(); 482918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 4830f6a1648197562e0b133440d612d9af297d0a86ccJohn McCall } 4831dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 483218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ConstructorInitialization: 483318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_ZeroInitialization: 483418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 483520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4836dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4837dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Walk through the computed steps for the initialization sequence, 483820093b4bf698f292c664676987541d5103b65b15Douglas Gregor // performing the specified conversions along the way. 483916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor bool ConstructorInitRequiresZeroInit = false; 484020093b4bf698f292c664676987541d5103b65b15Douglas Gregor for (step_iterator Step = step_begin(), StepEnd = step_end(); 484120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Step != StepEnd; ++Step) { 484220093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 4843f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4844dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4845429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get() ? CurInit.get()->getType() : QualType(); 4846dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 484720093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Step->Kind) { 484820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 4849dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // Overload resolution determined which function invoke; update the 485020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // initializer to reflect that choice. 4851429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckAddressOfMemberAccess(CurInit.get(), Step->Function.FoundDecl); 4852b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation()); 4853b13b737a2450167c82e148590e8019b839ce6b98John McCall CurInit = S.FixOverloadedFunctionReference(move(CurInit), 48546bb8017bb9e828d118e15e59d71c66bba323c364John McCall Step->Function.FoundDecl, 48559aa472c45d2bd81b7b52c225e8acc560d716db97John McCall Step->Function.Function); 485620093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4857dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 485820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseRValue: 4859906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 486020093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_CastDerivedToBaseLValue: { 486120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a derived-to-base cast that produces either an rvalue or an 486220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // lvalue. Perform that cast. 4863dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4864f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CXXCastPath BasePath; 48655cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson 486620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Casts to inaccessible base classes are allowed with C-style casts. 486720093b4bf698f292c664676987541d5103b65b15Douglas Gregor bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); 486820093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CheckDerivedToBaseConversion(SourceType, Step->Type, 4869429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getLocStart(), 4870429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getSourceRange(), 48715cf86ba6b5a724bf91cb52feade1158f1fbeb605Anders Carlsson &BasePath, IgnoreBaseAccess)) 4872f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4873dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 48746fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (S.BasePathInvolvesVirtualBase(BasePath)) { 48756fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor QualType T = SourceType; 48766fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const PointerType *Pointer = T->getAs<PointerType>()) 48776fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor T = Pointer->getPointeeType(); 48786fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor if (const RecordType *RecordTy = T->getAs<RecordType>()) 4879429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkVTableUsed(CurInit.get()->getLocStart(), 48806fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor cast<CXXRecordDecl>(RecordTy->getDecl())); 48816fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor } 48826fb745bdf1ff1e32caf07e42093a7920726892c1Douglas Gregor 48835baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 4884906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_CastDerivedToBaseLValue ? 48855baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 4886906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_CastDerivedToBaseXValue ? 48875baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 48885baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 4889f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 4890f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall Step->Type, 48912de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_DerivedToBase, 48925baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall CurInit.get(), 48935baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall &BasePath, VK)); 489420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 489520093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4896dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 489720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReference: 4898429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (FieldDecl *BitField = CurInit.get()->getBitField()) { 489920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // References cannot bind to bit fields (C++ [dcl.init.ref]p5). 490020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) 4901d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor << Entity.getType().isVolatileQualified() 490220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << BitField->getDeclName() 4903429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 490420093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(BitField->getLocation(), diag::note_bitfield_decl); 4905f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 490620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 4907a6fe0bf89db4372c9e8e8a5c2a50593c2977df29Anders Carlsson 4908429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInit.get()->refersToVectorElement()) { 490941593e3b7da967b52bc3c7f488b8752dee63f38eJohn McCall // References cannot bind to vector elements. 4910093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) 4911093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson << Entity.getType().isVolatileQualified() 4912429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 4913a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 4914f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4915093802675b1548f2a5f44c29938d65cce00d58bbAnders Carlsson } 4916dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 491720093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Reference binding does not have any corresponding ASTs. 491820093b4bf698f292c664676987541d5103b65b15Douglas Gregor 491920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 4920429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 4921f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 49223aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 492320093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 49243aba09376c5f49c4c8d176109ea4835bc2c528eeAnders Carlsson 492520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_BindReferenceToTemporary: 492620093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Check exception specifications 4927429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) 4928f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 492920093b4bf698f292c664676987541d5103b65b15Douglas Gregor 493003e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor // Materialize the temporary into memory. 4931b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit = new (S.Context) MaterializeTemporaryExpr( 4932b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor Entity.getType().getNonReferenceType(), 4933b4b7b5034bb8304ed03416635bf64c75c39889fcDouglas Gregor CurInit.get(), 493403e80030515c800d1ab44125b9052dfffd1bd04cDouglas Gregor Entity.getType()->isLValueReferenceType()); 4935d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 4936d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // If we're binding to an Objective-C object that has lifetime, we 4937d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor // need cleanups. 4938d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor if (S.getLangOptions().ObjCAutoRefCount && 4939d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor CurInit.get()->getType()->isObjCLifetimeType()) 4940d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor S.ExprNeedsCleanups = true; 4941d7b23167763f43d3e76b0de26141b1e52613ee3cDouglas Gregor 494220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 4943dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 4944523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 4945dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = CopyObject(S, Step->Type, Entity, move(CurInit), 4946523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor /*IsExtraneousCopy=*/true); 4947523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 4948523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 494920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_UserConversion: { 495020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // We have a user-defined conversion that invokes either a constructor 495120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // or a conversion function. 4952daa8e4e888758d55a7a759dd4a91b83921cef222John McCall CastKind CastKind; 495318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor bool IsCopy = false; 49549aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FunctionDecl *Fn = Step->Function.Function; 49559aa472c45d2bd81b7b52c225e8acc560d716db97John McCall DeclAccessPair FoundFn = Step->Function.FoundDecl; 49567cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara bool HadMultipleCandidates = Step->Function.HadMultipleCandidates; 49574154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor bool CreatedObject = false; 4958b13b737a2450167c82e148590e8019b839ce6b98John McCall if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { 495920093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the selected constructor. 4960ca0408fb49c1370430672acf2d770b7151cf71deJohn McCall ASTOwningVector<Expr*> ConstructorArgs(S); 4961429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley SourceLocation Loc = CurInit.get()->getLocStart(); 496220093b4bf698f292c664676987541d5103b65b15Douglas Gregor CurInit.release(); // Ownership transferred into MultiExprArg, below. 4963b13b737a2450167c82e148590e8019b839ce6b98John McCall 496420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Determine the arguments required to actually perform the constructor 496520093b4bf698f292c664676987541d5103b65b15Douglas Gregor // call. 4966429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley Expr *Arg = CurInit.get(); 496720093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (S.CompleteConstructorCall(Constructor, 4968429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley MultiExprArg(&Arg, 1), 496920093b4bf698f292c664676987541d5103b65b15Douglas Gregor Loc, ConstructorArgs)) 4970f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4971dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 497220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the an expression that constructs a temporary. 4973dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, Constructor, 49747a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall move_arg(ConstructorArgs), 49757cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates, 49767a1fad38256eb4c5129359be85ba1ea1678eb5c9John McCall /*ZeroInit*/ false, 4977428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth CXXConstructExpr::CK_Complete, 4978428edafa9eb80e01dd40aab31d4166a787a741e1Chandler Carruth SourceRange()); 497920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid()) 4980f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 4981b13b737a2450167c82e148590e8019b839ce6b98John McCall 49829a68a67c6ae4982001815cc04f69b8781058263aAnders Carlsson S.CheckConstructorAccess(Kind.getLocation(), Constructor, Entity, 49839aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn.getAccess()); 4984b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 4985dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 49862de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_ConstructorConversion; 498718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor QualType Class = S.Context.getTypeDeclType(Constructor->getParent()); 498818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.Context.hasSameUnqualifiedType(SourceType, Class) || 498918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.IsDerivedFrom(SourceType, Class)) 499018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor IsCopy = true; 4991dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 49924154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = true; 499320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 499420093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build a call to the conversion function. 4995b13b737a2450167c82e148590e8019b839ce6b98John McCall CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); 4996429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckMemberOperatorAccess(Kind.getLocation(), CurInit.get(), 0, 49979aa472c45d2bd81b7b52c225e8acc560d716db97John McCall FoundFn); 4998b697e084341185a08b3946df032fbc75f76a66e0John McCall S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation()); 4999dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5000dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi // FIXME: Should we move this initialization into a separate 500120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // derived-to-base conversion? I believe the answer is "no", because 500220093b4bf698f292c664676987541d5103b65b15Douglas Gregor // we don't want to turn off access control here for c-style casts. 5003429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5004429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformObjectArgumentInitialization(CurInit.take(), /*Qualifier=*/0, 5005429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley FoundFn, Conversion); 5006429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if(CurInitExprRes.isInvalid()) 5007f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5008429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 5009dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 501020093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Build the actual call to the conversion function. 50117cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara CurInit = S.BuildCXXMemberCallExpr(CurInit.get(), FoundFn, Conversion, 50127cc58b4c927fca539d43eaa58e00dca95946eb7cAbramo Bagnara HadMultipleCandidates); 501320093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (CurInit.isInvalid() || !CurInit.get()) 5014f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5015dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50162de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CastKind = CK_UserDefinedConversion; 5017dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50184154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor CreatedObject = Conversion->getResultType()->isRecordType(); 501920093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5020dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 50213b80232b50c29b245e674f5aa02047b408e41018Sebastian Redl bool RequiresCopy = !IsCopy && !isReferenceBinding(Steps.back()); 5022960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara bool MaybeBindToTemp = RequiresCopy || shouldBindAsTemporary(Entity); 5023960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara 5024960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (!MaybeBindToTemp && CreatedObject && shouldDestroyTemporary(Entity)) { 5025429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType T = CurInit.get()->getType(); 50264154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor if (const RecordType *Record = T->getAs<RecordType>()) { 5027dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi CXXDestructorDecl *Destructor 5028db89f289a22897f1031c92f3e49f7a9ba7bae61eDouglas Gregor = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); 5029429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckDestructorAccess(CurInit.get()->getLocStart(), Destructor, 50304154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor S.PDiag(diag::err_access_dtor_temp) << T); 5031429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.MarkDeclarationReferenced(CurInit.get()->getLocStart(), Destructor); 5032429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.DiagnoseUseOfDecl(Destructor, CurInit.get()->getLocStart()); 50334154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 50344154e0b1a5d03cbe4836e381c7d6187b7a0a200cDouglas Gregor } 5035dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5036f871d0cc377a1367b519a6cce26be74607566ebaJohn McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, 5037429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get()->getType(), 5038429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CastKind, CurInit.get(), 0, 5039104be6fc8de206c9b79b241b36ebaf9407b3be08Eli Friedman CurInit.get()->getValueKind())); 5040960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara if (MaybeBindToTemp) 5041960809e7e9f4a6e949797d20bc081da80495c0e1Abramo Bagnara CurInit = S.MaybeBindToTemporary(CurInit.takeAs<Expr>()); 50422f59979a7cc7929f53c9984423b0abeb83113442Douglas Gregor if (RequiresCopy) 5043523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor CurInit = CopyObject(S, Entity.getType().getNonReferenceType(), Entity, 5044523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor move(CurInit), /*IsExtraneousCopy=*/false); 504520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 504620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5047906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 504820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case SK_QualificationConversionLValue: 5049906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5050906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionRValue: { 505120093b4bf698f292c664676987541d5103b65b15Douglas Gregor // Perform a qualification conversion; these can never go wrong. 50525baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall ExprValueKind VK = 5053906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl Step->Kind == SK_QualificationConversionLValue ? 50545baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_LValue : 5055906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl (Step->Kind == SK_QualificationConversionXValue ? 50565baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_XValue : 50575baba9d98364a3525d6afa15a04cdad82fd6dd30John McCall VK_RValue); 5058429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, CK_NoOp, VK); 505920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5060906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl } 5061906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5062f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor case SK_ConversionSequence: { 5063f85e193739c953358c865005855253af4f68a497John McCall Sema::CheckedConversionKind CCK 5064f85e193739c953358c865005855253af4f68a497John McCall = Kind.isCStyleCast()? Sema::CCK_CStyleCast 5065f85e193739c953358c865005855253af4f68a497John McCall : Kind.isFunctionalCast()? Sema::CCK_FunctionalCast 5066c8d7f586180995ba33d03c0f6115b6a7bdefe326Richard Smith : Kind.isExplicitCast()? Sema::CCK_OtherCast 5067f85e193739c953358c865005855253af4f68a497John McCall : Sema::CCK_ImplicitConversion; 5068429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = 5069429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.PerformImplicitConversion(CurInit.get(), Step->Type, *Step->ICS, 5070f85e193739c953358c865005855253af4f68a497John McCall getAssignmentAction(Entity), CCK); 5071429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5072f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5073429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 507420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5075f0e43e5c4634870b8ac7bf65d5ffa5f292d4c8a5Douglas Gregor } 5076dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5077d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case SK_ListInitialization: { 5078429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 507913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Hack: We must pass *ResultType if available in order to set the type 508013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // of arrays, e.g. in 'int ar[] = {1, 2, 3};'. 508113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // But in 'const X &x = {1, 2, 3};' we're supposed to initialize a 508213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // temporary, not a reference, so we should pass Ty. 508313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Worst case: 'const int (&arref)[] = {1, 2, 3};'. 508413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Since this step is never used for a reference directly, we explicitly 508513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // unwrap references here and rewrap them afterwards. 508613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // We also need to create a InitializeTemporary entity for this. 508713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl QualType Ty = ResultType ? ResultType->getNonReferenceType() : Step->Type; 508813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl bool IsTemporary = ResultType && (*ResultType)->isReferenceType(); 508913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(Ty); 509013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListChecker PerformInitList(S, IsTemporary ? TempEntity : Entity, 509113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitList, Ty, /*VerifyOnly=*/false, 5092c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl Kind.getKind() != InitializationKind::IK_Direct || 5093c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl !S.getLangOptions().CPlusPlus0x); 509414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl if (PerformInitList.HadError()) 5095f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5096d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 509713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (ResultType) { 509813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if ((*ResultType)->isRValueReferenceType()) 509913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getRValueReferenceType(Ty); 510013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl else if ((*ResultType)->isLValueReferenceType()) 510113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Ty = S.Context.getLValueReferenceType(Ty, 510213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl (*ResultType)->getAs<LValueReferenceType>()->isSpelledAsLValue()); 510313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl *ResultType = Ty; 510413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 510513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 510613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *StructuredInitList = 510713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl PerformInitList.getFullyStructuredList(); 5108d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor CurInit.release(); 510913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(StructuredInitList); 5110d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5111d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 511251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor 511310f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl case SK_ListConstructorCall: { 511410f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); 511510f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl MultiExprArg Arg(InitList->getInits(), InitList->getNumInits()); 511610f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = PerformConstructorInitialization(S, Entity, Kind, 511710f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl move(Arg), *Step, 511810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 511910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl break; 512010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl } 51218713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 512213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 512313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(cast<InitListExpr>(CurInit.take())->getInit(0)); 512413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 512513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 512613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: { 512713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Expr *E = CurInit.take(); 512813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *Syntactic = Step->WrappingSyntacticList; 512913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl InitListExpr *ILE = new (S.Context) InitListExpr(S.Context, 513013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl Syntactic->getLBraceLoc(), &E, 1, Syntactic->getRBraceLoc()); 513113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setSyntacticForm(Syntactic); 513213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setType(E->getType()); 513313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl ILE->setValueKind(E->getValueKind()); 513413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl CurInit = S.Owned(ILE); 513513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 513613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 513713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 513810f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl case SK_ConstructorInitialization: 513910f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl CurInit = PerformConstructorInitialization(S, Entity, Kind, move(Args), 514010f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl *Step, 514110f04a6267eb07d3be00db1fd0369e1398f5d0a8Sebastian Redl ConstructorInitRequiresZeroInit); 514251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5143dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 514471d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor case SK_ZeroInitialization: { 514516006c901315fa12a108b4e571f187f4b676e426Douglas Gregor step_iterator NextStep = Step; 514616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ++NextStep; 5147dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi if (NextStep != StepEnd && 514816006c901315fa12a108b4e571f187f4b676e426Douglas Gregor NextStep->Kind == SK_ConstructorInitialization) { 514916006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // The need for zero-initialization is recorded directly into 515016006c901315fa12a108b4e571f187f4b676e426Douglas Gregor // the call to the object's constructor within the next step. 515116006c901315fa12a108b4e571f187f4b676e426Douglas Gregor ConstructorInitRequiresZeroInit = true; 515216006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else if (Kind.getKind() == InitializationKind::IK_Value && 515316006c901315fa12a108b4e571f187f4b676e426Douglas Gregor S.getLangOptions().CPlusPlus && 515416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor !Kind.isImplicitValueInit()) { 5155ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); 5156ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor if (!TSInfo) 5157dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi TSInfo = S.Context.getTrivialTypeSourceInfo(Step->Type, 5158ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor Kind.getRange().getBegin()); 5159ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor 5160ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor CurInit = S.Owned(new (S.Context) CXXScalarValueInitExpr( 5161ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo->getType().getNonLValueExprType(S.Context), 5162ab6677ec401cfd2c82b34e4cdfebd55a9dc25778Douglas Gregor TSInfo, 516371d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor Kind.getRange().getEnd())); 516416006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } else { 516571d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor CurInit = S.Owned(new (S.Context) ImplicitValueInitExpr(Step->Type)); 516616006c901315fa12a108b4e571f187f4b676e426Douglas Gregor } 516771d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor break; 516871d1740c94060b424bb745d6c6973ff27cfdee06Douglas Gregor } 516918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 517018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor case SK_CAssignment: { 5171429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley QualType SourceType = CurInit.get()->getType(); 5172429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = move(CurInit); 517318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Sema::AssignConvertType ConvTy = 5174429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckSingleAssignmentConstraints(Step->Type, Result); 5175429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 5176429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 5177429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(Result); 5178aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5179aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor // If this is a call, allow conversion to a transparent union. 5180429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult CurInitExprRes = move(CurInit); 5181aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor if (ConvTy != Sema::Compatible && 5182aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor Entity.getKind() == InitializedEntity::EK_Parameter && 5183429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExprRes) 5184aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor == Sema::Compatible) 5185aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor ConvTy = Sema::Compatible; 5186429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (CurInitExprRes.isInvalid()) 5187429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return ExprError(); 5188429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = move(CurInitExprRes); 5189aa0373107968aa7a26bf63f4a2673b8325b800afDouglas Gregor 5190a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor bool Complained; 519118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), 519218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Step->Type, SourceType, 5193429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit.get(), 5194a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor getAssignmentAction(Entity), 5195a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor &Complained)) { 5196a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 5197f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return ExprError(); 5198a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor } else if (Complained) 5199a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 520018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor break; 520118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor } 5202cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman 5203cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman case SK_StringInit: { 5204cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman QualType Ty = Step->Type; 5205429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CheckStringInit(CurInit.get(), ResultType ? *ResultType : Ty, 5206fef8b344ea299a1717cc94486f5df6facf3e337cJohn McCall S.Context.getAsArrayType(Ty), S); 5207cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman break; 5208cfdc81a83467973b14e4ea5e9e9af1690f135415Eli Friedman } 5209569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 5210569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 5211429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley CurInit = S.ImpCastExprToType(CurInit.take(), Step->Type, 52122de56d1d0c3a504ad1529de2677628bdfbb95cd4John McCall CK_ObjCObjectLValueCast, 5213c1c0dfb376b829b94d4c61e9f358ce23e6aa3169Eli Friedman CurInit.get()->getValueKind()); 5214569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 5215cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5216cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 5217cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // Okay: we checked everything before creating this step. Note that 5218cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // this is a GNU extension. 5219cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), diag::ext_array_init_copy) 5220429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << Step->Type << CurInit.get()->getType() 5221429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley << CurInit.get()->getSourceRange(); 5222cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5223cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // If the destination type is an incomplete array type, update the 5224cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor // type accordingly. 5225cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (ResultType) { 5226cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const IncompleteArrayType *IncompleteDest 5227cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor = S.Context.getAsIncompleteArrayType(Step->Type)) { 5228cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor if (const ConstantArrayType *ConstantSource 5229429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley = S.Context.getAsConstantArrayType(CurInit.get()->getType())) { 5230cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor *ResultType = S.Context.getConstantArrayType( 5231cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor IncompleteDest->getElementType(), 5232cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ConstantSource->getSize(), 5233cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ArrayType::Normal, 0); 5234cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5235cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5236cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor } 5237f85e193739c953358c865005855253af4f68a497John McCall break; 5238cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5239f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 5240f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 5241f85e193739c953358c865005855253af4f68a497John McCall checkIndirectCopyRestoreSource(S, CurInit.get()); 5242f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(new (S.Context) 5243f85e193739c953358c865005855253af4f68a497John McCall ObjCIndirectCopyRestoreExpr(CurInit.take(), Step->Type, 5244f85e193739c953358c865005855253af4f68a497John McCall Step->Kind == SK_PassByIndirectCopyRestore)); 5245f85e193739c953358c865005855253af4f68a497John McCall break; 5246f85e193739c953358c865005855253af4f68a497John McCall 5247f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 5248f85e193739c953358c865005855253af4f68a497John McCall CurInit = S.Owned(ImplicitCastExpr::Create(S.Context, Step->Type, 524933e56f3273457bfa22c7c50bc46cf5a18216863dJohn McCall CK_ARCProduceObject, 5250f85e193739c953358c865005855253af4f68a497John McCall CurInit.take(), 0, VK_RValue)); 5251cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 525220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 525320093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 525415d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall 525515d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall // Diagnose non-fatal problems with the completed initialization. 525615d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall if (Entity.getKind() == InitializedEntity::EK_Member && 525715d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl())->isBitField()) 525815d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall S.CheckBitFieldInitialization(Kind.getLocation(), 525915d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall cast<FieldDecl>(Entity.getDecl()), 526015d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall CurInit.get()); 5261dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 526220093b4bf698f292c664676987541d5103b65b15Douglas Gregor return move(CurInit); 526320093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 526420093b4bf698f292c664676987541d5103b65b15Douglas Gregor 526520093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 526620093b4bf698f292c664676987541d5103b65b15Douglas Gregor// Diagnose initialization failures 526720093b4bf698f292c664676987541d5103b65b15Douglas Gregor//===----------------------------------------------------------------------===// 5268dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumibool InitializationSequence::Diagnose(Sema &S, 526920093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializedEntity &Entity, 527020093b4bf698f292c664676987541d5103b65b15Douglas Gregor const InitializationKind &Kind, 527120093b4bf698f292c664676987541d5103b65b15Douglas Gregor Expr **Args, unsigned NumArgs) { 5272d695d6bb7323672e29dbb1556a3dafde3d3b2732Sebastian Redl if (!Failed()) 527320093b4bf698f292c664676987541d5103b65b15Douglas Gregor return false; 5274dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5275d6542d8efcf8389c3aab764f9e29ac284e16eda6Douglas Gregor QualType DestType = Entity.getType(); 527620093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (Failure) { 527720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_TooManyInitsForReference: 52789db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // FIXME: Customize for the initialized entity? 52799db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (NumArgs == 0) 52809db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_without_init) 52819db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType.getNonReferenceType(); 52829db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor else // FIXME: diagnostic below could be better! 52839db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) 52849db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << SourceRange(Args[0]->getLocStart(), Args[NumArgs - 1]->getLocEnd()); 528520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5286dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 528720093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitList: 528820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 528920093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) 529020093b4bf698f292c664676987541d5103b65b15Douglas Gregor << (Failure == FK_ArrayNeedsInitListOrStringLiteral); 529120093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5292dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5293cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5294cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5295cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor S.Diag(Kind.getLocation(), 5296cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor (Failure == FK_ArrayTypeMismatch 5297cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor ? diag::err_array_init_different_type 5298cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor : diag::err_array_init_non_constant_array)) 5299cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << DestType.getNonReferenceType() 5300cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getType() 5301cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor << Args[0]->getSourceRange(); 5302cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5303cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 530473076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 530573076431605556fdbf28d287d084a73a24a8b8d4John McCall S.Diag(Kind.getLocation(), diag::err_variable_object_no_init) 530673076431605556fdbf28d287d084a73a24a8b8d4John McCall << Args[0]->getSourceRange(); 530773076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 530873076431605556fdbf28d287d084a73a24a8b8d4John McCall 53096bb8017bb9e828d118e15e59d71c66bba323c364John McCall case FK_AddressOfOverloadFailed: { 53106bb8017bb9e828d118e15e59d71c66bba323c364John McCall DeclAccessPair Found; 5311dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.ResolveAddressOfOverloadedFunction(Args[0], 531220093b4bf698f292c664676987541d5103b65b15Douglas Gregor DestType.getNonReferenceType(), 53136bb8017bb9e828d118e15e59d71c66bba323c364John McCall true, 53146bb8017bb9e828d118e15e59d71c66bba323c364John McCall Found); 531520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 53166bb8017bb9e828d118e15e59d71c66bba323c364John McCall } 5317dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 531820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitOverloadFailed: 53194a520a2bd8a6b79fa5d4771f02e34e7bd6bc461dDouglas Gregor case FK_UserConversionOverloadFailed: 532020093b4bf698f292c664676987541d5103b65b15Douglas Gregor switch (FailedOverloadResult) { 532120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Ambiguous: 532218ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Failure == FK_UserConversionOverloadFailed) 532318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_ambiguous_condition) 532418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getType() << DestType 532518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 532618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor else 532718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor S.Diag(Kind.getLocation(), diag::err_ref_init_ambiguous) 532818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << DestType << Args[0]->getType() 532918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << Args[0]->getSourceRange(); 533018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 5331120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, Args, NumArgs); 533220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5333dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 533420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_No_Viable_Function: 533520093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) 533620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 533720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 5338120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, Args, NumArgs); 533920093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5340dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 534120093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Deleted: { 534220093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) 534320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() << DestType.getNonReferenceType() 534420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 534520093b4bf698f292c664676987541d5103b65b15Douglas Gregor OverloadCandidateSet::iterator Best; 5346120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 53478fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best, 53488fcc516a5d5b2fec0023a9dced29285a38b95355Douglas Gregor true); 534920093b4bf698f292c664676987541d5103b65b15Douglas Gregor if (Ovl == OR_Deleted) { 535020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 5351f85e193739c953358c865005855253af4f68a497John McCall << 1 << Best->Function->isDeleted(); 535220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } else { 53539f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Inconsistent overload resolution?"); 535420093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 535520093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 535620093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5357dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 535820093b4bf698f292c664676987541d5103b65b15Douglas Gregor case OR_Success: 53599f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Conversion did not fail!"); 536020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 536120093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 536220093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5363dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 536420093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 536513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl if (isa<InitListExpr>(Args[0])) { 536613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl S.Diag(Kind.getLocation(), 536713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl diag::err_lvalue_reference_bind_to_initlist) 536813dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType().isVolatileQualified() 536913dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << DestType.getNonReferenceType() 537013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl << Args[0]->getSourceRange(); 537113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 537213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl } 537313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl // Intentional fallthrough 537413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 537520093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5376dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Kind.getLocation(), 537720093b4bf698f292c664676987541d5103b65b15Douglas Gregor Failure == FK_NonConstLValueReferenceBindingToTemporary 537820093b4bf698f292c664676987541d5103b65b15Douglas Gregor ? diag::err_lvalue_reference_bind_to_temporary 537920093b4bf698f292c664676987541d5103b65b15Douglas Gregor : diag::err_lvalue_reference_bind_to_unrelated) 5380ef06e2451c3069569ba543e7b1c5e0de7a257005Douglas Gregor << DestType.getNonReferenceType().isVolatileQualified() 538120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 538220093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 538320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 538420093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5385dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 538620093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_RValueReferenceBindingToLValue: 538720093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) 5388fb5d7efc279335bde2cdc0a73da525d6b28201e9Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getType() 538920093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 539020093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5391dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 539220093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitDropsQualifiers: 539320093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) 539420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 539520093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 539620093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 539720093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5398dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 539920093b4bf698f292c664676987541d5103b65b15Douglas Gregor case FK_ReferenceInitFailed: 540020093b4bf698f292c664676987541d5103b65b15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) 540120093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType.getNonReferenceType() 54027eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 540320093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getType() 540420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 5405926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5406926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5407926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 540820093b4bf698f292c664676987541d5103b65b15Douglas Gregor break; 5409dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 54101be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor case FK_ConversionFailed: { 54111be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor QualType FromType = Args[0]->getType(); 54126efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu PartialDiagnostic PDiag = S.PDiag(diag::err_init_conversion_failed) 541318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor << (int)Entity.getKind() 541420093b4bf698f292c664676987541d5103b65b15Douglas Gregor << DestType 54157eb0a9eb0cde8444b97f9c5b713d9be7a6f1e607John McCall << Args[0]->isLValue() 54161be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor << FromType 541720093b4bf698f292c664676987541d5103b65b15Douglas Gregor << Args[0]->getSourceRange(); 54186efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.HandleFunctionTypeMismatch(PDiag, FromType, DestType); 54196efd4c55a1a481d92966a91141c03e8145234cf6Richard Trieu S.Diag(Kind.getLocation(), PDiag); 5420926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor if (DestType.getNonReferenceType()->isObjCObjectPointerType() && 5421926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor Args[0]->getType()->isObjCObjectPointerType()) 5422926df6cfabf3eaa4afc990c097fa4619b76a9b57Douglas Gregor S.EmitRelatedResultTypeNote(Args[0]); 5423d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 54241be8eec3ddd2a23c19b453c2639226174eb5d4a8Douglas Gregor } 5425429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5426429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5427429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley // No-op. This error has already been reported. 5428429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5429429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5430d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_TooManyInitsForScalar: { 543199a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor SourceRange R; 543299a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor 543399a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor if (InitListExpr *InitList = dyn_cast<InitListExpr>(Args[0])) 543419311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(InitList->getInit(0)->getLocEnd(), 543599a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor InitList->getLocEnd()); 5436dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi else 543719311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R = SourceRange(Args[0]->getLocEnd(), Args[NumArgs - 1]->getLocEnd()); 5438d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 543919311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor R.setBegin(S.PP.getLocForEndOfToken(R.getBegin())); 544019311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor if (Kind.isCStyleOrFunctionalCast()) 544119311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_builtin_func_cast_more_than_one_arg) 544219311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << R; 544319311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor else 544419311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor S.Diag(Kind.getLocation(), diag::err_excess_initializers) 544519311e70edaa2d7bb0d709344aebea4fbbae2da4Douglas Gregor << /*scalar=*/2 << R; 5446d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5447d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor } 5448d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5449d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_ReferenceBindingToInitList: 5450d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) 5451d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << DestType.getNonReferenceType() << Args[0]->getSourceRange(); 5452d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5453d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor 5454d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor case FK_InitListBadDestinationType: 5455d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) 5456d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); 5457d87b61f6398bab21176f73818a8d11ca1c3632c8Douglas Gregor break; 5458dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5459cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl case FK_ListConstructorOverloadFailed: 546051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case FK_ConstructorOverloadFailed: { 546151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor SourceRange ArgsRange; 546251c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (NumArgs) 5463dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi ArgsRange = SourceRange(Args[0]->getLocStart(), 546451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor Args[NumArgs - 1]->getLocEnd()); 5465dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5466cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl if (Failure == FK_ListConstructorOverloadFailed) { 5467cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl assert(NumArgs == 1 && "List construction from other than 1 argument."); 5468cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl InitListExpr *InitList = cast<InitListExpr>(Args[0]); 5469cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl Args = InitList->getInits(); 5470cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl NumArgs = InitList->getNumInits(); 5471cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl } 5472cf15cef8447e8b3ae08e81ad25ae9eb443038acfSebastian Redl 547351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // FIXME: Using "DestType" for the entity we're printing is probably 547451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor // bad. 547551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor switch (FailedOverloadResult) { 547651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Ambiguous: 547751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_ambiguous_init) 547851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 5479120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_ViableCandidates, 5480120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall Args, NumArgs); 548151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5482dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 548351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_No_Viable_Function: 54849db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Kind.getKind() == InitializationKind::IK_Default && 54859db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor (Entity.getKind() == InitializedEntity::EK_Base || 54869db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor Entity.getKind() == InitializedEntity::EK_Member) && 54879db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 54889db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default initialization of a member or 54899db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // base within a constructor. If no viable function was 54909db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // found, notify the user that she needs to explicitly 54919db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialize this base/member. 54929db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor 54939db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = cast<CXXConstructorDecl>(S.CurContext); 54949db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Base) { 54959db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 54969db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 54979db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 54989db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*base=*/0 54999db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getType(); 55009db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 55019db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor RecordDecl *BaseDecl 55029db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getBaseSpecifier()->getType()->getAs<RecordType>() 55039db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor ->getDecl(); 55049db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) 55059db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(BaseDecl); 55069db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 55079db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) 55089db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 55099db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 55109db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*member=*/1 55119db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 55129db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_field_decl); 55139db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 55149db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (const RecordType *Record 55159db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor = Entity.getType()->getAs<RecordType>()) 5516dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi S.Diag(Record->getDecl()->getLocation(), 55179db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor diag::note_previous_decl) 55189db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTagDeclType(Record->getDecl()); 55199db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 55209db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor break; 55219db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 55229db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor 552351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_no_viable_function_in_init) 552451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << DestType << ArgsRange; 5525120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall FailedCandidateSet.NoteCandidates(S, OCD_AllCandidates, Args, NumArgs); 552651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 5527dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 552851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Deleted: { 552951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) 553051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor << true << DestType << ArgsRange; 553151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor OverloadCandidateSet::iterator Best; 5532120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall OverloadingResult Ovl 5533120d63cd4465230c2cd56508c7cd8e0ad00848e7John McCall = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); 553451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor if (Ovl == OR_Deleted) { 553551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor S.Diag(Best->Function->getLocation(), diag::note_unavailable_here) 5536f85e193739c953358c865005855253af4f68a497John McCall << 1 << Best->Function->isDeleted(); 553751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } else { 553851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Inconsistent overload resolution?"); 553951c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 554051c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 554151c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5542dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 554351c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor case OR_Success: 554451c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor llvm_unreachable("Conversion did not fail!"); 554551c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 554651c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 554751c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor break; 554851c56d6c8a944c2e49dd714db65a780d9f627e15Douglas Gregor } 5549dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 555099a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor case FK_DefaultInitOfConst: 55519db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor if (Entity.getKind() == InitializedEntity::EK_Member && 55529db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor isa<CXXConstructorDecl>(S.CurContext)) { 55539db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // This is implicit default-initialization of a const member in 55549db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // a constructor. Complain that it needs to be explicitly 55559db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor // initialized. 55569db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); 55579db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) 55589db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Constructor->isImplicit() 55599db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << S.Context.getTypeDeclType(Constructor->getParent()) 55609db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << /*const=*/1 55619db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 55629db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) 55639db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << Entity.getName(); 55649db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } else { 55659db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor S.Diag(Kind.getLocation(), diag::err_default_init_const) 55669db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor << DestType << (bool)DestType->getAs<RecordType>(); 55679db7dbb918ca49f4ee6c181e4917e7b6ec547353Douglas Gregor } 556899a2e600f9e2e51d3ce10fb6f27191677ac65b2aDouglas Gregor break; 5569dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 55708713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_Incomplete: 55718713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl S.RequireCompleteType(Kind.getLocation(), DestType, 55728713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl diag::err_init_incomplete_type); 55738713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 55748713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 557514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl case FK_ListInitializationFailed: { 557614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl // Run the init list checker again to emit diagnostics. 557714b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListExpr* InitList = cast<InitListExpr>(Args[0]); 557814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl QualType DestType = Entity.getType(); 557914b0c194b356a1204d081765b3e6699687bed97cSebastian Redl InitListChecker DiagnoseInitList(S, Entity, InitList, 5580c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl DestType, /*VerifyOnly=*/false, 5581c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl Kind.getKind() != InitializationKind::IK_Direct || 5582c223518ebf72e1709dc8938cd9384161ea5ec0bbSebastian Redl !S.getLangOptions().CPlusPlus0x); 558314b0c194b356a1204d081765b3e6699687bed97cSebastian Redl assert(DiagnoseInitList.HadError() && 558414b0c194b356a1204d081765b3e6699687bed97cSebastian Redl "Inconsistent init list check result."); 558514b0c194b356a1204d081765b3e6699687bed97cSebastian Redl break; 558614b0c194b356a1204d081765b3e6699687bed97cSebastian Redl } 55875acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 55885acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: { 55895acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall // FIXME: Already diagnosed! 55905acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 55915acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall } 559220093b4bf698f292c664676987541d5103b65b15Douglas Gregor } 5593dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5594a41a8c5972c2632247ae7913cf6ce65d45f7e702Douglas Gregor PrintInitLocationNote(S, Entity); 559520093b4bf698f292c664676987541d5103b65b15Douglas Gregor return true; 559620093b4bf698f292c664676987541d5103b65b15Douglas Gregor} 559718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 55985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid InitializationSequence::dump(raw_ostream &OS) const { 5599de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (SequenceKind) { 5600de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FailedSequence: { 5601de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "Failed sequence: "; 5602de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (Failure) { 5603de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForReference: 5604de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for reference"; 5605de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5606dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5607de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitList: 5608de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list"; 5609de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5610dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5611de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ArrayNeedsInitListOrStringLiteral: 5612de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "array requires initializer list or string literal"; 5613de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5614dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5615cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_ArrayTypeMismatch: 5616cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array type mismatch"; 5617cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5618cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5619cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case FK_NonConstantArrayInit: 5620cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "non-constant array initializer"; 5621cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5622cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5623de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_AddressOfOverloadFailed: 5624de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "address of overloaded function failed"; 5625de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5626dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5627de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitOverloadFailed: 5628de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overload resolution for reference initialization failed"; 5629de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5630dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5631de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToTemporary: 5632de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to temporary"; 5633de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5634dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5635de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_NonConstLValueReferenceBindingToUnrelated: 5636de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "non-const lvalue reference bound to unrelated type"; 5637de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5638dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5639de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_RValueReferenceBindingToLValue: 5640de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "rvalue reference bound to an lvalue"; 5641de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5642dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5643de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitDropsQualifiers: 5644de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization drops qualifiers"; 5645de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5646dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5647de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceInitFailed: 5648de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "reference initialization failed"; 5649de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5650dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5651de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConversionFailed: 5652de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "conversion failed"; 5653de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5654dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5655429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley case FK_ConversionFromPropertyFailed: 5656429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley OS << "conversion from property failed"; 5657429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley break; 5658429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 5659de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_TooManyInitsForScalar: 5660de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "too many initializers for scalar"; 5661de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5662dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5663de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ReferenceBindingToInitList: 5664de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "referencing binding to initializer list"; 5665de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5666dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5667de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_InitListBadDestinationType: 5668de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "initializer list for non-aggregate, non-scalar type"; 5669de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5670dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5671de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_UserConversionOverloadFailed: 5672de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "overloading failed for user-defined conversion"; 5673de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5674dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5675de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_ConstructorOverloadFailed: 5676de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor overloading failed"; 5677de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5678dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5679de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case FK_DefaultInitOfConst: 5680de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "default initialization of a const variable"; 5681de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5682dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 568372a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor case FK_Incomplete: 568472a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor OS << "initialization of incomplete type"; 568572a43bbf6802c8fcfd04dcb2be8eafcb0b8fe29cDouglas Gregor break; 56868713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 56878713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case FK_ListInitializationFailed: 568814b0c194b356a1204d081765b3e6699687bed97cSebastian Redl OS << "list initialization checker failure"; 56895acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 56905acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall 569173076431605556fdbf28d287d084a73a24a8b8d4John McCall case FK_VariableLengthArrayHasInitializer: 569273076431605556fdbf28d287d084a73a24a8b8d4John McCall OS << "variable length array has an initializer"; 569373076431605556fdbf28d287d084a73a24a8b8d4John McCall break; 569473076431605556fdbf28d287d084a73a24a8b8d4John McCall 56955acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall case FK_PlaceholderType: 56965acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall OS << "initializer expression isn't contextually valid"; 56975acb0c98b363400f6ade0ae7250f0102224e806bJohn McCall break; 5698b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky 5699b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky case FK_ListConstructorOverloadFailed: 5700b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky OS << "list constructor overloading failed"; 5701b0c6c33c3479d2cb4c3b9f5a6e58c58d07c731e7Nick Lewycky break; 5702dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi } 5703de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << '\n'; 5704de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5705de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5706dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5707de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case DependentSequence: 57087491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Dependent sequence\n"; 5709de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor return; 5710dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 57117491c499e826682e128a400038361ebcbde30eecSebastian Redl case NormalSequence: 57127491c499e826682e128a400038361ebcbde30eecSebastian Redl OS << "Normal sequence: "; 5713de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5714de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5715dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5716de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { 5717de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor if (S != step_begin()) { 5718de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << " -> "; 5719de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5720dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5721de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor switch (S->Kind) { 5722de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ResolveAddressOfOverloadedFunction: 5723de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "resolve address of overloaded function"; 5724de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5725dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5726de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseRValue: 5727de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (rvalue" << S->Type.getAsString() << ")"; 5728de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5729dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5730906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_CastDerivedToBaseXValue: 5731906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "derived-to-base case (xvalue" << S->Type.getAsString() << ")"; 5732906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl break; 5733dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5734de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CastDerivedToBaseLValue: 5735de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "derived-to-base case (lvalue" << S->Type.getAsString() << ")"; 5736de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5737dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5738de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReference: 5739de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to lvalue"; 5740de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5741dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5742de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_BindReferenceToTemporary: 5743de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "bind reference to a temporary"; 5744de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5745dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5746523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor case SK_ExtraneousCopyToTemporary: 5747523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor OS << "extraneous C++03 copy to temporary"; 5748523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor break; 5749523d46af407f32fc53861e6f068e8076d4fe84a8Douglas Gregor 5750de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_UserConversion: 5751b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << "user-defined conversion via " << *S->Function.Function; 5752de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5753906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5754de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionRValue: 5755de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (rvalue)"; 575613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5757de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 5758906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl case SK_QualificationConversionXValue: 5759906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl OS << "qualification conversion (xvalue)"; 576013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 5761906082edf2aea1c6de2926f93a8d7121e49d2a54Sebastian Redl 5762de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_QualificationConversionLValue: 5763de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "qualification conversion (lvalue)"; 5764de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5765dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5766de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConversionSequence: 5767de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "implicit conversion sequence ("; 5768de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor S->ICS->DebugPrint(); // FIXME: use OS 5769de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << ")"; 5770de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5771dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5772de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ListInitialization: 57738713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list aggregate initialization"; 57748713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl break; 57758713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl 57768713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl case SK_ListConstructorCall: 57778713d4e874f2adc2928ebfb86c845574a14e3b3eSebastian Redl OS << "list initialization via constructor"; 5778de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5779dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 578013dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_UnwrapInitList: 578113dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "unwrap reference initializer list"; 578213dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 578313dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 578413dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl case SK_RewrapInitList: 578513dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl OS << "rewrap reference initializer list"; 578613dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl break; 578713dc8f98f6108dca8aaa9721567ed5a2d9911e0fSebastian Redl 5788de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ConstructorInitialization: 5789de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "constructor initialization"; 5790de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5791dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5792de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_ZeroInitialization: 5793de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "zero initialization"; 5794de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5795dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5796de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_CAssignment: 5797de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "C assignment"; 5798de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5799dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA Takumi 5800de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor case SK_StringInit: 5801de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor OS << "string initialization"; 5802de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor break; 5803569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor 5804569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor case SK_ObjCObjectConversion: 5805569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor OS << "Objective-C object conversion"; 5806569c3166874324c24011f8ade6978421f0d39b3cDouglas Gregor break; 5807cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor 5808cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor case SK_ArrayInit: 5809cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor OS << "array initialization"; 5810cd9ec3b4fb3d042f89aa5b572de7df3ef9ee4a80Douglas Gregor break; 5811f85e193739c953358c865005855253af4f68a497John McCall 5812f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectCopyRestore: 5813f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect copy and restore"; 5814f85e193739c953358c865005855253af4f68a497John McCall break; 5815f85e193739c953358c865005855253af4f68a497John McCall 5816f85e193739c953358c865005855253af4f68a497John McCall case SK_PassByIndirectRestore: 5817f85e193739c953358c865005855253af4f68a497John McCall OS << "pass by indirect restore"; 5818f85e193739c953358c865005855253af4f68a497John McCall break; 5819f85e193739c953358c865005855253af4f68a497John McCall 5820f85e193739c953358c865005855253af4f68a497John McCall case SK_ProduceObjCObject: 5821f85e193739c953358c865005855253af4f68a497John McCall OS << "Objective-C object retension"; 5822f85e193739c953358c865005855253af4f68a497John McCall break; 5823de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5824de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor } 5825de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 5826de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 5827de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregorvoid InitializationSequence::dump() const { 5828de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor dump(llvm::errs()); 5829de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor} 5830de4b1d86bf48bc2a84bddf6b188f6da53eaea845Douglas Gregor 5831191591336f639dad1504e863733fb831645c1644Jeffrey Yasskinstatic void DiagnoseNarrowingInInitList( 5832191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Sema& S, QualType EntityType, const Expr *InitE, 5833191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin bool Constant, const APValue &ConstantValue) { 5834191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (Constant) { 5835191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin S.Diag(InitE->getLocStart(), 583662ec1f2fd7368542bb926c04797fb07023547694Francois Pichet S.getLangOptions().CPlusPlus0x && !S.getLangOptions().MicrosoftExt 5837191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ? diag::err_init_list_constant_narrowing 5838191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin : diag::warn_init_list_constant_narrowing) 5839191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << InitE->getSourceRange() 584008d6e032a2a0a8656d12b3b7b93942987bb12eb7Richard Smith << ConstantValue.getAsString(S.getASTContext(), EntityType) 58419906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 5842191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else 5843191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin S.Diag(InitE->getLocStart(), 584462ec1f2fd7368542bb926c04797fb07023547694Francois Pichet S.getLangOptions().CPlusPlus0x && !S.getLangOptions().MicrosoftExt 5845191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ? diag::err_init_list_variable_narrowing 5846191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin : diag::warn_init_list_variable_narrowing) 5847191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << InitE->getSourceRange() 58489906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << InitE->getType().getLocalUnqualifiedType() 58499906149972906e340f512a60f72a8676748f24d8Jeffrey Yasskin << EntityType.getLocalUnqualifiedType(); 5850191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 5851191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::SmallString<128> StaticCast; 5852191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin llvm::raw_svector_ostream OS(StaticCast); 5853191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << "static_cast<"; 5854191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (const TypedefType *TT = EntityType->getAs<TypedefType>()) { 5855191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // It's important to use the typedef's name if there is one so that the 5856191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // fixit doesn't break code using types like int64_t. 5857191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // 5858191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // FIXME: This will break if the typedef requires qualification. But 5859191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // getQualifiedNameAsString() includes non-machine-parsable components. 5860b8989f27f116ff2400e92a52c067a69846119eb5Benjamin Kramer OS << *TT->getDecl(); 5861191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } else if (const BuiltinType *BT = EntityType->getAs<BuiltinType>()) 5862191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << BT->getName(S.getLangOptions()); 5863191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin else { 5864191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // Oops, we didn't find the actual type of the variable. Don't emit a fixit 5865191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin // with a broken cast. 5866191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin return; 5867191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 5868191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin OS << ">("; 5869191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin S.Diag(InitE->getLocStart(), diag::note_init_list_narrowing_override) 5870191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << InitE->getSourceRange() 5871191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << FixItHint::CreateInsertion(InitE->getLocStart(), OS.str()) 5872191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin << FixItHint::CreateInsertion( 5873191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin S.getPreprocessor().getLocForEndOfToken(InitE->getLocEnd()), ")"); 5874191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin} 5875191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 587618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 587718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor// Initialization helper functions 587818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor//===----------------------------------------------------------------------===// 58792be7e90b81509204b99b7bbf9753ad17b894a12aSean Huntbool 58802be7e90b81509204b99b7bbf9753ad17b894a12aSean HuntSema::CanPerformCopyInitialization(const InitializedEntity &Entity, 58812be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt ExprResult Init) { 58822be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt if (Init.isInvalid()) 58832be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt return false; 58842be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 58852be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt Expr *InitE = Init.get(); 58862be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt assert(InitE && "No initialization expression"); 58872be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 58882be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationKind Kind = InitializationKind::CreateCopy(SourceLocation(), 58892be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt SourceLocation()); 58902be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 5891383616cd2e61131a534afd9364ef53f643e1f834Sebastian Redl return !Seq.Failed(); 58922be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt} 58932be7e90b81509204b99b7bbf9753ad17b894a12aSean Hunt 5894dfbb02a16ac8c764b5ba1742450513d6212d2f9fNAKAMURA TakumiExprResult 589518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas GregorSema::PerformCopyInitialization(const InitializedEntity &Entity, 589618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor SourceLocation EqualLoc, 5897191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin ExprResult Init, 5898191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin bool TopLevelOfInitList) { 589918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (Init.isInvalid()) 590018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor return ExprError(); 590118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 590215d7d12226f83de24f96f4bf4e27ebba30fef51eJohn McCall Expr *InitE = Init.get(); 590318ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor assert(InitE && "No initialization expression?"); 590418ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 590518ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor if (EqualLoc.isInvalid()) 590618ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc = InitE->getLocStart(); 590718ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor 590818ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationKind Kind = InitializationKind::CreateCopy(InitE->getLocStart(), 590918ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor EqualLoc); 591018ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor InitializationSequence Seq(*this, Entity, Kind, &InitE, 1); 591118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor Init.release(); 5912191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin 5913191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin bool Constant = false; 5914191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin APValue Result; 5915191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin if (TopLevelOfInitList && 5916191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Seq.endsWithNarrowing(Context, InitE, &Constant, &Result)) { 5917191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin DiagnoseNarrowingInInitList(*this, Entity.getType(), InitE, 5918191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin Constant, Result); 5919191591336f639dad1504e863733fb831645c1644Jeffrey Yasskin } 5920f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCall return Seq.Perform(*this, Entity, Kind, MultiExprArg(&InitE, 1)); 592118ef5e28a9a2677f8b1dce1fb2638d66e0a1621fDouglas Gregor} 5922