SemaType.cpp revision cd281c3ded486ced5aad29dd7c3fa22b7514c3d8
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- SemaType.cpp - Semantic Analysis for Types -----------------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements type-related semantic analysis. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "Sema.h" 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/ASTContext.h" 16980e508ca70d6de75d2abfd96b4681fc98bb2698Steve Naroff#include "clang/AST/DeclObjC.h" 17e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Expr.h" 18e4858a65a93fb36c099d8dd2ea0a98e33e77687eDaniel Dunbar#include "clang/Parse/DeclSpec.h" 195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 21930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// \brief Convert the specified declspec to the appropriate type 22930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// object. 23930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// \param DS the declaration specifiers 24930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// \returns The type described by the declaration specifiers, or NULL 25930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// if there was an error. 26fca0ddd42965e0b7ae821213486d4e0dd71fb439Chris LattnerQualType Sema::ConvertDeclSpecToType(const DeclSpec &DS) { 275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Should move the logic from DeclSpec::Finish to here for validity 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // checking. 29958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner QualType Result; 305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecType()) { 3296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner case DeclSpec::TST_void: 3396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Result = Context.VoidTy; 3496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner break; 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_char: 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 37fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.CharTy; 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) 39fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.SignedCharTy; 405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else { 415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Unknown TSS value"); 43fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.UnsignedCharTy; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 45958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 4664c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis case DeclSpec::TST_wchar: 4764c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 4864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.WCharTy; 4964c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) { 50f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 51f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner << DS.getSpecifierName(DS.getTypeSpecType()); 5264c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getSignedWCharType(); 5364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } else { 5464c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 5564c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis "Unknown TSS value"); 56f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 57f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner << DS.getSpecifierName(DS.getTypeSpecType()); 5864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getUnsignedWCharType(); 5964c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } 6064c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis break; 61d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner case DeclSpec::TST_unspecified: 6262f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner // "<proto1,proto2>" is an objc qualified ID with a missing id. 63097e916b617bb4a069a03764024c310ed42a6424Chris Lattner if (DeclSpec::ProtocolQualifierListTy PQ = DS.getProtocolQualifiers()) { 64ae4da6150bb837311a2f0f958b01a2989066ba90Chris Lattner Result = Context.getObjCQualifiedIdType((ObjCProtocolDecl**)PQ, 6562f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner DS.getNumProtocolQualifiers()); 6662f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner break; 6762f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner } 6862f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner 69d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Unspecified typespec defaults to int in C90. However, the C90 grammar 70d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // [C90 6.5] only allows a decl-spec if there was *some* type-specifier, 71d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // type-qualifier, or storage-class-specifier. If not, emit an extwarn. 72d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Note that the one exception to this is function definitions, which are 73d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // allowed to be completely missing a declspec. This is handled in the 74d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // parser already though by it pretending to have seen an 'int' in this 75d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // case. 76d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner if (getLangOptions().ImplicitInt) { 7735d276f443462249b436951c1c663820569e1768Chris Lattner // In C89 mode, we only warn if there is a completely missing declspec 7835d276f443462249b436951c1c663820569e1768Chris Lattner // when one is not allowed. 7935d276f443462249b436951c1c663820569e1768Chris Lattner if (DS.isEmpty()) 80173144affecc3f97b73b075c44752aff8cfcfc3aChris Lattner Diag(DS.getSourceRange().getBegin(), diag::warn_missing_declspec) 81173144affecc3f97b73b075c44752aff8cfcfc3aChris Lattner << CodeModificationHint::CreateInsertion(DS.getSourceRange().getBegin(), 82173144affecc3f97b73b075c44752aff8cfcfc3aChris Lattner "int"); 834310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor } else if (!DS.hasTypeSpecifier()) { 84d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // C99 and C++ require a type specifier. For example, C99 6.7.2p2 says: 85d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // "At least one type specifier shall be given in the declaration 86d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // specifiers in each declaration, and in the specifier-qualifier list in 87d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // each struct declaration and type name." 884310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor // FIXME: Does Microsoft really have the implicit int extension in C++? 894310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor unsigned DK = getLangOptions().CPlusPlus && !getLangOptions().Microsoft? 904310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor diag::err_missing_type_specifier 9135d276f443462249b436951c1c663820569e1768Chris Lattner : diag::warn_missing_type_specifier; 92173144affecc3f97b73b075c44752aff8cfcfc3aChris Lattner Diag(DS.getSourceRange().getBegin(), DK) 93173144affecc3f97b73b075c44752aff8cfcfc3aChris Lattner << CodeModificationHint::CreateInsertion(DS.getSourceRange().getBegin(), 94173144affecc3f97b73b075c44752aff8cfcfc3aChris Lattner "int"); 95d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner } 96d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner 97d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // FALL THROUGH. 983cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner case DeclSpec::TST_int: { 995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() != DeclSpec::TSS_unsigned) { 1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 101fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.IntTy; break; 102fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.ShortTy; break; 103fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.LongTy; break; 104fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_longlong: Result = Context.LongLongTy; break; 1055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 1075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 108fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.UnsignedIntTy; break; 109fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.UnsignedShortTy; break; 110fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.UnsignedLongTy; break; 111fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_longlong: Result =Context.UnsignedLongLongTy; break; 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 114958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 1153cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner } 116fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_float: Result = Context.FloatTy; break; 117958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_double: 118958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner if (DS.getTypeSpecWidth() == DeclSpec::TSW_long) 119fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.LongDoubleTy; 120958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner else 121fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.DoubleTy; 122958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 123fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_bool: Result = Context.BoolTy; break; // _Bool or bool 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal32: // _Decimal32 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal64: // _Decimal64 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal128: // _Decimal128 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(0 && "FIXME: GNU decimal extensions not supported yet!"); 12899dc91422144483c20d1c7381bc9ac634b646b04Chris Lattner case DeclSpec::TST_class: 1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_enum: 1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_union: 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_struct: { 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Decl *D = static_cast<Decl *>(DS.getTypeRep()); 13399dc91422144483c20d1c7381bc9ac634b646b04Chris Lattner assert(D && "Didn't get a decl for a class/enum/union/struct?"); 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getTypeSpecSign() == 0 && 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle qualifiers on typedef names yet!"); 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 1382ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor Result = Context.getTypeDeclType(cast<TypeDecl>(D)); 139958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1411a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor case DeclSpec::TST_typename: { 1425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getTypeSpecSign() == 0 && 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle qualifiers on typedef names yet!"); 1451a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor Result = QualType::getFromOpaquePtr(DS.getTypeRep()); 1462ce52f3fb95bf544db6bd3d91a72bce7d9cceb6cDouglas Gregor 1471a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor if (DeclSpec::ProtocolQualifierListTy PQ = DS.getProtocolQualifiers()) { 1481a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor // FIXME: Adding a TST_objcInterface clause doesn't seem ideal, so 1491a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor // we have this "hack" for now... 1501a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor if (const ObjCInterfaceType *Interface = Result->getAsObjCInterfaceType()) 1511a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor Result = Context.getObjCQualifiedInterfaceType(Interface->getDecl(), 1521a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor (ObjCProtocolDecl**)PQ, 1531a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor DS.getNumProtocolQualifiers()); 1541a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor else if (Result == Context.getObjCIdType()) 155ae4da6150bb837311a2f0f958b01a2989066ba90Chris Lattner // id<protocol-list> 156ae4da6150bb837311a2f0f958b01a2989066ba90Chris Lattner Result = Context.getObjCQualifiedIdType((ObjCProtocolDecl**)PQ, 157ae4da6150bb837311a2f0f958b01a2989066ba90Chris Lattner DS.getNumProtocolQualifiers()); 1584262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff else if (Result == Context.getObjCClassType()) 1594262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff // Class<protocol-list> 1608dfb0c57ddb700b163afa89e3ab160f1de26753dSteve Naroff Diag(DS.getSourceRange().getBegin(), 1614262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff diag::err_qualified_class_unsupported) << DS.getSourceRange(); 1624262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff else 1634262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff Diag(DS.getSourceRange().getBegin(), 1644262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff diag::err_invalid_protocol_qualifiers) << DS.getSourceRange(); 165c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian } 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 167958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 1685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 169958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_typeofType: 170958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner Result = QualType::getFromOpaquePtr(DS.getTypeRep()); 171958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner assert(!Result.isNull() && "Didn't get a type for typeof?"); 172d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 173fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getTypeOfType(Result); 174958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 175d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff case DeclSpec::TST_typeofExpr: { 176d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff Expr *E = static_cast<Expr *>(DS.getTypeRep()); 177d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff assert(E && "Didn't get an expression for typeof?"); 178d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 17972564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor Result = Context.getTypeOfExprType(E); 180958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 181d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff } 182809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor case DeclSpec::TST_error: 183809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor return QualType(); 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 185958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner 186958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner // Handle complex types. 187f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor if (DS.getTypeSpecComplex() == DeclSpec::TSC_complex) { 188f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor if (getLangOptions().Freestanding) 189f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor Diag(DS.getTypeSpecComplexLoc(), diag::ext_freestanding_complex); 190fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getComplexType(Result); 191f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor } 192958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner 193958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner assert(DS.getTypeSpecComplex() != DeclSpec::TSC_imaginary && 194958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner "FIXME: imaginary types not supported yet!"); 195958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner 19638d8b98803ac354dba15578d65ea99a83dead046Chris Lattner // See if there are any attributes on the declspec that apply to the type (as 19738d8b98803ac354dba15578d65ea99a83dead046Chris Lattner // opposed to the decl). 198fca0ddd42965e0b7ae821213486d4e0dd71fb439Chris Lattner if (const AttributeList *AL = DS.getAttributes()) 199c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner ProcessTypeAttributeList(Result, AL); 200f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner 20196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Apply const/volatile/restrict qualifiers to T. 20296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (unsigned TypeQuals = DS.getTypeQualifiers()) { 20396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner 20496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Enforce C99 6.7.3p2: "Types other than pointer types derived from object 20596b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // or incomplete types shall not be restrict-qualified." C++ also allows 20696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // restrict-qualified references. 20796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (TypeQuals & QualType::Restrict) { 208bb71001d287fda144c4bcf096124d8e3667d6930Daniel Dunbar if (Result->isPointerType() || Result->isReferenceType()) { 209bb71001d287fda144c4bcf096124d8e3667d6930Daniel Dunbar QualType EltTy = Result->isPointerType() ? 210bb71001d287fda144c4bcf096124d8e3667d6930Daniel Dunbar Result->getAsPointerType()->getPointeeType() : 211bb71001d287fda144c4bcf096124d8e3667d6930Daniel Dunbar Result->getAsReferenceType()->getPointeeType(); 212bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner 213bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner // If we have a pointer or reference, the pointee must have an object or 214bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner // incomplete type. 215bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner if (!EltTy->isIncompleteOrObjectType()) { 216bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner Diag(DS.getRestrictSpecLoc(), 217d3a94e24ddf3fb90de76b17bd176d9ed61e66f2cChris Lattner diag::err_typecheck_invalid_restrict_invalid_pointee) 218d162584991885ab004a02573a73ce06422b921fcChris Lattner << EltTy << DS.getSourceRange(); 219bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner TypeQuals &= ~QualType::Restrict; // Remove the restrict qualifier. 220bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner } 221bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner } else { 22296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Diag(DS.getRestrictSpecLoc(), 223d3a94e24ddf3fb90de76b17bd176d9ed61e66f2cChris Lattner diag::err_typecheck_invalid_restrict_not_pointer) 224d162584991885ab004a02573a73ce06422b921fcChris Lattner << Result << DS.getSourceRange(); 225bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner TypeQuals &= ~QualType::Restrict; // Remove the restrict qualifier. 22696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 22796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 22896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner 22996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Warn about CV qualifiers on functions: C99 6.7.3p8: "If the specification 23096b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // of a function type includes any type qualifiers, the behavior is 23196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // undefined." 23296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (Result->isFunctionType() && TypeQuals) { 23396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Get some location to point at, either the C or V location. 23496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner SourceLocation Loc; 23596b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (TypeQuals & QualType::Const) 23696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Loc = DS.getConstSpecLoc(); 23796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner else { 23896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner assert((TypeQuals & QualType::Volatile) && 23996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner "Has CV quals but not C or V?"); 24096b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Loc = DS.getVolatileSpecLoc(); 24196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 242d3a94e24ddf3fb90de76b17bd176d9ed61e66f2cChris Lattner Diag(Loc, diag::warn_typecheck_function_qualifiers) 243d162584991885ab004a02573a73ce06422b921fcChris Lattner << Result << DS.getSourceRange(); 24496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 24596b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner 246f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // C++ [dcl.ref]p1: 247f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // Cv-qualified references are ill-formed except when the 248f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // cv-qualifiers are introduced through the use of a typedef 249f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // (7.1.3) or of a template type argument (14.3), in which 250f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // case the cv-qualifiers are ignored. 2511a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor // FIXME: Shouldn't we be checking SCS_typedef here? 2521a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor if (DS.getTypeSpecType() == DeclSpec::TST_typename && 253f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor TypeQuals && Result->isReferenceType()) { 254f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor TypeQuals &= ~QualType::Const; 255f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor TypeQuals &= ~QualType::Volatile; 256f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor } 257f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor 25896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Result = Result.getQualifiedType(TypeQuals); 25996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 260f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner return Result; 261f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner} 262f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner 263cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregorstatic std::string getPrintableNameForEntity(DeclarationName Entity) { 264cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (Entity) 265cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return Entity.getAsString(); 266cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 267cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return "type name"; 268cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 269cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 270cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a pointer type. 271cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 272cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a pointer. 273cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 274cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Quals The cvr-qualifiers to be applied to the pointer type. 275cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 276cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 277cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// pointer type or, if there is no such entity, the location of the 278cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have pointer type. 279cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 280cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the pointer 281cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 282cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 283cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable pointer type, if there are no 284cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 285cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas GregorQualType Sema::BuildPointerType(QualType T, unsigned Quals, 286cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor SourceLocation Loc, DeclarationName Entity) { 287cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isReferenceType()) { 288cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ 8.3.2p4: There shall be no ... pointers to references ... 289cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_pointer_to_reference) 290cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << getPrintableNameForEntity(Entity); 291cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 292cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 293cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 294cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Enforce C99 6.7.3p2: "Types other than pointer types derived from 295cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // object or incomplete types shall not be restrict-qualified." 296cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if ((Quals & QualType::Restrict) && !T->isIncompleteOrObjectType()) { 297cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_typecheck_invalid_restrict_invalid_pointee) 298cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << T; 299cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Quals &= ~QualType::Restrict; 300cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 301cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 302cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Build the pointer type. 303cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return Context.getPointerType(T).getQualifiedType(Quals); 304cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 305cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 306cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a reference type. 307cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 308cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a reference. 309cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 310cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Quals The cvr-qualifiers to be applied to the reference type. 311cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 312cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 313cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// reference type or, if there is no such entity, the location of the 314cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have reference type. 315cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 316cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the reference 317cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 318cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 319cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable reference type, if there are no 320cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 321cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas GregorQualType Sema::BuildReferenceType(QualType T, unsigned Quals, 322cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor SourceLocation Loc, DeclarationName Entity) { 323cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isReferenceType()) { 324cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ [dcl.ref]p4: There shall be no references to references. 325cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // 326cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // According to C++ DR 106, references to references are only 327cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // diagnosed when they are written directly (e.g., "int & &"), 328cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // but not when they happen via a typedef: 329cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // 330cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // typedef int& intref; 331cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // typedef intref& intref2; 332cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // 333cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Parser::ParserDeclaratorInternal diagnoses the case where 334cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // references are written directly; here, we handle the 335cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // collapsing of references-to-references as described in C++ 336cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // DR 106 and amended by C++ DR 540. 337cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return T; 338cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 339cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 340cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ [dcl.ref]p1: 341cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // A declarator that specifies the type “reference to cv void” 342cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // is ill-formed. 343cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isVoidType()) { 344cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_reference_to_void); 345cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 346cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 347cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 348cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Enforce C99 6.7.3p2: "Types other than pointer types derived from 349cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // object or incomplete types shall not be restrict-qualified." 350cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if ((Quals & QualType::Restrict) && !T->isIncompleteOrObjectType()) { 351cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_typecheck_invalid_restrict_invalid_pointee) 352cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << T; 353cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Quals &= ~QualType::Restrict; 354cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 355cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 356cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ [dcl.ref]p1: 357cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // [...] Cv-qualified references are ill-formed except when the 358cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // cv-qualifiers are introduced through the use of a typedef 359cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // (7.1.3) or of a template type argument (14.3), in which case 360cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // the cv-qualifiers are ignored. 361cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // 362cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // We diagnose extraneous cv-qualifiers for the non-typedef, 363cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // non-template type argument case within the parser. Here, we just 364cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // ignore any extraneous cv-qualifiers. 365cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Quals &= ~QualType::Const; 366cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Quals &= ~QualType::Volatile; 367cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 368cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Handle restrict on references. 369cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return Context.getReferenceType(T).getQualifiedType(Quals); 370cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 371cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 372cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build an array type. 373cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 374cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type of each element in the array. 375cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 376cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param ASM C99 array size modifier (e.g., '*', 'static'). 377cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 378cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param ArraySize Expression describing the size of the array. 379cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 380cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Quals The cvr-qualifiers to be applied to the array's 381cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// element type. 382cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 383cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 384cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// array type or, if there is no such entity, the location of the 385cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have array type. 386cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 387cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the array 388cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 389cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 390cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable array type, if there are no errors. Otherwise, 391cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// returns a NULL type. 392cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas GregorQualType Sema::BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, 393cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Expr *ArraySize, unsigned Quals, 394cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor SourceLocation Loc, DeclarationName Entity) { 395cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: If the element type is an incomplete or function type, 396cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // reject it (e.g. void ary[7], struct foo ary[7], void ary[7]()) 397cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (DiagnoseIncompleteType(Loc, T, 398cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor diag::err_illegal_decl_array_incomplete_type)) 399cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 400cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 401cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isFunctionType()) { 402cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_functions) 403cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << getPrintableNameForEntity(Entity); 404cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 405cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 406cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 407cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ 8.3.2p4: There shall be no ... arrays of references ... 408cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isReferenceType()) { 409cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_references) 410cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << getPrintableNameForEntity(Entity); 411cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 412cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 413cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 414cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (const RecordType *EltTy = T->getAsRecordType()) { 415cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // If the element type is a struct or union that contains a variadic 416cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // array, accept it as a GNU extension: C99 6.7.2.1p2. 417cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (EltTy->getDecl()->hasFlexibleArrayMember()) 418cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::ext_flexible_array_in_array) << T; 419cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else if (T->isObjCInterfaceType()) { 420cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::warn_objc_array_of_interfaces) << T; 421cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 422cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 423cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: The size expression shall have integer type. 424cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (ArraySize && !ArraySize->isTypeDependent() && 425cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor !ArraySize->getType()->isIntegerType()) { 426cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 427cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << ArraySize->getType() << ArraySize->getSourceRange(); 428cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor ArraySize->Destroy(Context); 429cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 430cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 431cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor llvm::APSInt ConstVal(32); 432cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (!ArraySize) { 433cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.getIncompleteArrayType(T, ASM, Quals); 434cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else if (ArraySize->isValueDependent()) { 435cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.getDependentSizedArrayType(T, ArraySize, ASM, Quals); 436cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else if (!ArraySize->isIntegerConstantExpr(ConstVal, Context) || 437cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor (!T->isDependentType() && !T->isConstantSizeType())) { 438cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Per C99, a variable array is an array with either a non-constant 439cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // size or an element type that has a non-constant-size 440cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.getVariableArrayType(T, ArraySize, ASM, Quals); 441cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else { 442cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: If the expression is a constant expression, it shall 443cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // have a value greater than zero. 444cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (ConstVal.isSigned()) { 445cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (ConstVal.isNegative()) { 446cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(ArraySize->getLocStart(), 447cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor diag::err_typecheck_negative_array_size) 448cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << ArraySize->getSourceRange(); 449cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 450cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else if (ConstVal == 0) { 451cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // GCC accepts zero sized static arrays. 452cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(ArraySize->getLocStart(), diag::ext_typecheck_zero_array_size) 453cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << ArraySize->getSourceRange(); 454cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 455cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 456cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.getConstantArrayType(T, ConstVal, ASM, Quals); 457cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 458cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // If this is not C99, extwarn about VLA's and C99 array size modifiers. 459cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (!getLangOptions().C99) { 460cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (ArraySize && !ArraySize->isTypeDependent() && 461cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor !ArraySize->isValueDependent() && 462cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor !ArraySize->isIntegerConstantExpr(Context)) 463cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::ext_vla); 464cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor else if (ASM != ArrayType::Normal || Quals != 0) 465cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::ext_c99_array_usage); 466cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 467cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 468cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return T; 469cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 470cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 471cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 47298eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump/// GetTypeForDeclarator - Convert the type for the specified 47398eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump/// declarator to Type instances. Skip the outermost Skip type 47498eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump/// objects. 475cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian RedlQualType Sema::GetTypeForDeclarator(Declarator &D, Scope *S, unsigned Skip) { 47698eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump bool OmittedReturnType = false; 47798eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump 47898eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump if (D.getContext() == Declarator::BlockLiteralContext 47998eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump && Skip == 0 48098eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump && !D.getDeclSpec().hasTypeSpecifier() 48198eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump && (D.getNumTypeObjects() == 0 48298eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump || (D.getNumTypeObjects() == 1 48398eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump && D.getTypeObject(0).Kind == DeclaratorChunk::Function))) 48498eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump OmittedReturnType = true; 48598eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump 486b23deda7333cfc2316c989d10745c145dfbea6d6Chris Lattner // long long is a C99 feature. 487d1eb332181f02a7e0a6f9749265e6a0f55555cd4Chris Lattner if (!getLangOptions().C99 && !getLangOptions().CPlusPlus0x && 488b23deda7333cfc2316c989d10745c145dfbea6d6Chris Lattner D.getDeclSpec().getTypeSpecWidth() == DeclSpec::TSW_longlong) 489b23deda7333cfc2316c989d10745c145dfbea6d6Chris Lattner Diag(D.getDeclSpec().getTypeSpecWidthLoc(), diag::ext_longlong); 490930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 491930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Determine the type of the declarator. Not all forms of declarator 492930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // have a type. 493930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor QualType T; 494930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor switch (D.getKind()) { 495930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor case Declarator::DK_Abstract: 496930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor case Declarator::DK_Normal: 49798eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump case Declarator::DK_Operator: { 49898eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump const DeclSpec& DS = D.getDeclSpec(); 49998eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump if (OmittedReturnType) 50098eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // We default to a dependent type initially. Can be modified by 50198eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // the first return statement. 50298eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump T = Context.DependentTy; 503809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor else { 50498eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump T = ConvertDeclSpecToType(DS); 505809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor if (T.isNull()) 506809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor return T; 507809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor } 508930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 50998eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump } 510930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 511930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor case Declarator::DK_Constructor: 512930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor case Declarator::DK_Destructor: 513930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor case Declarator::DK_Conversion: 514930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Constructors and destructors don't have return types. Use 515930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // "void" instead. Conversion operators will check their return 516930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // types separately. 517930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor T = Context.VoidTy; 518930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 519930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 5204c5d320a7581f4b80b151630c91cea5727fa9923Sebastian Redl 521cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // The name we're declaring, if any. 522cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor DeclarationName Name; 523cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (D.getIdentifier()) 524cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Name = D.getIdentifier(); 525cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 52698eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // Walk the DeclTypeInfo, building the recursive type as we go. 52798eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // DeclTypeInfos are ordered from the identifier out, which is 52898eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // opposite of what we want :). 529cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian Redl for (unsigned i = Skip, e = D.getNumTypeObjects(); i != e; ++i) { 530cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian Redl DeclaratorChunk &DeclType = D.getTypeObject(e-i-1+Skip); 5315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DeclType.Kind) { 5325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: assert(0 && "Unknown decltype!"); 5335618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff case DeclaratorChunk::BlockPointer: 5345618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff if (DeclType.Cls.TypeQuals) 5355618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff Diag(D.getIdentifierLoc(), diag::err_qualified_block_pointer_type); 5365618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff if (!T.getTypePtr()->isFunctionType()) 5375618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff Diag(D.getIdentifierLoc(), diag::err_nonfunction_block_type); 5385618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff else 5395618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff T = Context.getBlockPointerType(T); 5405618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff break; 5415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Pointer: 542cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = BuildPointerType(T, DeclType.Ptr.TypeQuals, DeclType.Loc, Name); 5435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 544cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor case DeclaratorChunk::Reference: 545cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = BuildReferenceType(T, 546cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor DeclType.Ref.HasRestrict? QualType::Restrict : 0, 547cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor DeclType.Loc, Name); 5485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 5495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Array: { 550fd89bc825026e44c68a68db72d4012fd6752e70fChris Lattner DeclaratorChunk::ArrayTypeInfo &ATI = DeclType.Arr; 55194f81fd0b0f81a99d215b225c8c5616295b063f6Chris Lattner Expr *ArraySize = static_cast<Expr*>(ATI.NumElts); 5525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ArrayType::ArraySizeModifier ASM; 5535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ATI.isStar) 5545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Star; 5555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (ATI.hasStatic) 5565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Static; 5575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 5585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Normal; 559cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = BuildArrayType(T, ASM, ArraySize, ATI.TypeQuals, DeclType.Loc, Name); 5605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 5615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 562f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::Function: { 5635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the function declarator has a prototype (i.e. it is not () and 5645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // does not have a K&R-style identifier list), then the arguments are part 5655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // of the type, otherwise the argument list is (). 5665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 56768cfd49ea35d9101da9e6d4d5642263c9e95f1a4Chris Lattner 568cd8812948bc8a65dcf10c541c1775e5ba44def6cChris Lattner // C99 6.7.5.3p1: The return type may not be a function or array type. 56968cfd49ea35d9101da9e6d4d5642263c9e95f1a4Chris Lattner if (T->isArrayType() || T->isFunctionType()) { 570d162584991885ab004a02573a73ce06422b921fcChris Lattner Diag(DeclType.Loc, diag::err_func_returning_array_function) << T; 571cd8812948bc8a65dcf10c541c1775e5ba44def6cChris Lattner T = Context.IntTy; 572cd8812948bc8a65dcf10c541c1775e5ba44def6cChris Lattner D.setInvalidType(true); 573cd8812948bc8a65dcf10c541c1775e5ba44def6cChris Lattner } 574cd8812948bc8a65dcf10c541c1775e5ba44def6cChris Lattner 575eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman if (FTI.NumArgs == 0) { 576c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis if (getLangOptions().CPlusPlus) { 577c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis // C++ 8.3.5p2: If the parameter-declaration-clause is empty, the 578c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis // function takes no arguments. 579971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis T = Context.getFunctionType(T, NULL, 0, FTI.isVariadic,FTI.TypeQuals); 580965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } else if (FTI.isVariadic) { 581965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor // We allow a zero-parameter variadic function in C if the 582965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor // function is marked with the "overloadable" 583965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor // attribute. Scan for this attribute now. 584965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor bool Overloadable = false; 585965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor for (const AttributeList *Attrs = D.getAttributes(); 586965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Attrs; Attrs = Attrs->getNext()) { 587965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor if (Attrs->getKind() == AttributeList::AT_overloadable) { 588965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Overloadable = true; 589965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor break; 590965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 591965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 592965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor 593965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor if (!Overloadable) 594965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Diag(FTI.getEllipsisLoc(), diag::err_ellipsis_first_arg); 595965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor T = Context.getFunctionType(T, NULL, 0, FTI.isVariadic, 0); 596c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis } else { 597c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis // Simple void foo(), where the incoming T is the result type. 59872564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor T = Context.getFunctionNoProtoType(T); 599c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis } 600eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } else if (FTI.ArgInfo[0].Param == 0) { 6015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.5.3p3: Reject int(x,y,z) when it's not a function definition. 602eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman Diag(FTI.ArgInfo[0].IdentLoc, diag::err_ident_list_in_fn_declaration); 6035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 6045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, we have a function with an argument list that is 6055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // potentially variadic. 6065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::SmallVector<QualType, 16> ArgTys; 6075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = FTI.NumArgs; i != e; ++i) { 6098123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner ParmVarDecl *Param = (ParmVarDecl *)FTI.ArgInfo[i].Param; 6108123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner QualType ArgTy = Param->getType(); 61178c75fb3d275079c5fab30eeb33077958f2b0265Chris Lattner assert(!ArgTy.isNull() && "Couldn't parse type?"); 61208d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // 61308d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // Perform the default function/array conversion (C99 6.7.5.3p[7,8]). 61408d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // This matches the conversion that is done in 615bff5f5cfd194c3cc096ba89360fb537814a9666aNate Begeman // Sema::ActOnParamDeclarator(). Without this conversion, the 61608d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // argument type in the function prototype *will not* match the 61708d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // type in ParmVarDecl (which makes the code generator unhappy). 61808d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // 61908d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // FIXME: We still apparently need the conversion in 620e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner // Sema::ActOnParamDeclarator(). This doesn't make any sense, since 62108d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // it should be driving off the type being created here. 62208d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // 62308d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // FIXME: If a source translation tool needs to see the original type, 62408d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // then we need to consider storing both types somewhere... 62508d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff // 626e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner if (ArgTy->isArrayType()) { 627e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner ArgTy = Context.getArrayDecayedType(ArgTy); 628529bd02affa96a311dd9ab131f2ab4d833017fb7Chris Lattner } else if (ArgTy->isFunctionType()) 62908d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff ArgTy = Context.getPointerType(ArgTy); 630e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner 6315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look for 'void'. void is allowed only as a single argument to a 6325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // function with no other parameters (C99 6.7.5.3p10). We record 63372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor // int(void) as a FunctionProtoType with an empty argument list. 63408d51393bfa55a0b7d99db2b2a59f1df7d3f4f68Steve Naroff else if (ArgTy->isVoidType()) { 6355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is something like 'float(int, void)', reject it. 'void' 6365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // is an incomplete type (C99 6.2.5p19) and function decls cannot 6375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // have arguments of incomplete type. 6385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.NumArgs != 1 || FTI.isVariadic) { 6395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DeclType.Loc, diag::err_void_only_param); 6402ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner ArgTy = Context.IntTy; 6418123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner Param->setType(ArgTy); 6422ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else if (FTI.ArgInfo[i].Ident) { 6432ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'int(void abc)'. 6445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(FTI.ArgInfo[i].IdentLoc, 6454565d4e83cec55356fe9c75929579eacced9da36Chris Lattner diag::err_param_with_void_type); 6462ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner ArgTy = Context.IntTy; 6478123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner Param->setType(ArgTy); 6482ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else { 6492ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'float(const void)'. 650f46699ce225811d8d9dbab9d00189a0e54469457Chris Lattner if (ArgTy.getCVRQualifiers()) 6512ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner Diag(DeclType.Loc, diag::err_void_param_qualified); 6522ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner 6532ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Do not add 'void' to the ArgTys list. 6542ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner break; 6552ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } 656eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } else if (!FTI.hasPrototype) { 657eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman if (ArgTy->isPromotableIntegerType()) { 658eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman ArgTy = Context.IntTy; 659eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } else if (const BuiltinType* BTy = ArgTy->getAsBuiltinType()) { 660eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman if (BTy->getKind() == BuiltinType::Float) 661eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman ArgTy = Context.DoubleTy; 662eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } 6635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ArgTys.push_back(ArgTy); 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer T = Context.getFunctionType(T, &ArgTys[0], ArgTys.size(), 668971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis FTI.isVariadic, FTI.TypeQuals); 6695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 6705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 672f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::MemberPointer: 673f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // The scope spec must refer to a class, or be dependent. 674f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl DeclContext *DC = static_cast<DeclContext*>( 675f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl DeclType.Mem.Scope().getScopeRep()); 676f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl QualType ClsType; 677f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // FIXME: Extend for dependent types when it's actually supported. 678f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // See ActOnCXXNestedNameSpecifier. 679f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl if (CXXRecordDecl *RD = dyn_cast_or_null<CXXRecordDecl>(DC)) { 680f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl ClsType = Context.getTagDeclType(RD); 681f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } else { 682f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl if (DC) { 683f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl Diag(DeclType.Mem.Scope().getBeginLoc(), 684f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl diag::err_illegal_decl_mempointer_in_nonclass) 685f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl << (D.getIdentifier() ? D.getIdentifier()->getName() : "type name") 686f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl << DeclType.Mem.Scope().getRange(); 687f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 688f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl D.setInvalidType(true); 689f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl ClsType = Context.IntTy; 690f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 691f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 692f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // C++ 8.3.3p3: A pointer to member shall not pointer to ... a member 693f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // with reference type, or "cv void." 694f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl if (T->isReferenceType()) { 695f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl Diag(DeclType.Loc, diag::err_illegal_decl_pointer_to_reference) 696f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl << (D.getIdentifier() ? D.getIdentifier()->getName() : "type name"); 697f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl D.setInvalidType(true); 698f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl T = Context.IntTy; 699f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 700f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl if (T->isVoidType()) { 701f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl Diag(DeclType.Loc, diag::err_illegal_decl_mempointer_to_void) 702f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl << (D.getIdentifier() ? D.getIdentifier()->getName() : "type name"); 703f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl T = Context.IntTy; 704f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 705f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 706f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // Enforce C99 6.7.3p2: "Types other than pointer types derived from 707f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // object or incomplete types shall not be restrict-qualified." 708f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl if ((DeclType.Mem.TypeQuals & QualType::Restrict) && 709f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl !T->isIncompleteOrObjectType()) { 710f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl Diag(DeclType.Loc, diag::err_typecheck_invalid_restrict_invalid_pointee) 711f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl << T; 712f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl DeclType.Mem.TypeQuals &= ~QualType::Restrict; 713f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 714f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 7154433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl T = Context.getMemberPointerType(T, ClsType.getTypePtr()). 7164433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl getQualifiedType(DeclType.Mem.TypeQuals); 717f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 718f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl break; 719f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 720f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 721cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T.isNull()) { 722cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor D.setInvalidType(true); 723cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.IntTy; 724cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 725cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 726c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // See if there are any attributes on this declarator chunk. 727c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner if (const AttributeList *AL = DeclType.getAttrs()) 728c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner ProcessTypeAttributeList(T, AL); 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 730971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 731971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis if (getLangOptions().CPlusPlus && T->isFunctionType()) { 73272564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor const FunctionProtoType *FnTy = T->getAsFunctionProtoType(); 73372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor assert(FnTy && "Why oh why is there not a FunctionProtoType here ?"); 734971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 735971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis // C++ 8.3.5p4: A cv-qualifier-seq shall only be part of the function type 736971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis // for a nonstatic member function, the function type to which a pointer 737971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis // to member refers, or the top-level function type of a function typedef 738971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis // declaration. 739971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis if (FnTy->getTypeQuals() != 0 && 740971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef && 741584049d49d956add7bce5669e9823491f7d8de78Douglas Gregor ((D.getContext() != Declarator::MemberContext && 742584049d49d956add7bce5669e9823491f7d8de78Douglas Gregor (!D.getCXXScopeSpec().isSet() || 743584049d49d956add7bce5669e9823491f7d8de78Douglas Gregor !static_cast<DeclContext*>(D.getCXXScopeSpec().getScopeRep()) 744bcbffc46f1ad3796c4582fa1e3a9113b5aa26061Douglas Gregor ->isRecord())) || 745971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static)) { 746971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis if (D.isFunctionDeclarator()) 747971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis Diag(D.getIdentifierLoc(), diag::err_invalid_qualified_function_type); 748971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis else 749971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis Diag(D.getIdentifierLoc(), 750971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis diag::err_invalid_qualified_typedef_function_type_use); 751971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 752971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis // Strip the cv-quals from the type. 753971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis T = Context.getFunctionType(FnTy->getResultType(), FnTy->arg_type_begin(), 7547fb5e4888221cd36652d078c6b171ac55e7f406dArgyrios Kyrtzidis FnTy->getNumArgs(), FnTy->isVariadic(), 0); 755971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 756971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7580bf29ad534c381087e89efadbf7aff0579bf259fChris Lattner // If there were any type attributes applied to the decl itself (not the 7590bf29ad534c381087e89efadbf7aff0579bf259fChris Lattner // type, apply the type attribute to the type!) 7600bf29ad534c381087e89efadbf7aff0579bf259fChris Lattner if (const AttributeList *Attrs = D.getAttributes()) 761c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner ProcessTypeAttributeList(T, Attrs); 7620bf29ad534c381087e89efadbf7aff0579bf259fChris Lattner 7635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T; 7645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 766a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek/// ObjCGetTypeForMethodDefinition - Builds the type for a method definition 767360300ca2ee298d585d29baf006519507d968812Fariborz Jahanian/// declarator 768a526c5c67e5a0473c340903ee542ce570119665fTed KremenekQualType Sema::ObjCGetTypeForMethodDefinition(DeclTy *D) { 76989951a86b594513c2a013532ed45d197413b1087Chris Lattner ObjCMethodDecl *MDecl = cast<ObjCMethodDecl>(static_cast<Decl *>(D)); 770306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian QualType T = MDecl->getResultType(); 771306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian llvm::SmallVector<QualType, 16> ArgTys; 772306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian 7733560002bed2be6b428f1a909c489a8857b4417c7Fariborz Jahanian // Add the first two invisible argument types for self and _cmd. 774f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor if (MDecl->isInstanceMethod()) { 775a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek QualType selfTy = Context.getObjCInterfaceType(MDecl->getClassInterface()); 7761f7b6f88f18d7f6b10265acec5d41c4ed1897487Fariborz Jahanian selfTy = Context.getPointerType(selfTy); 7771f7b6f88f18d7f6b10265acec5d41c4ed1897487Fariborz Jahanian ArgTys.push_back(selfTy); 77889951a86b594513c2a013532ed45d197413b1087Chris Lattner } else 779a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ArgTys.push_back(Context.getObjCIdType()); 780a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ArgTys.push_back(Context.getObjCSelType()); 7813560002bed2be6b428f1a909c489a8857b4417c7Fariborz Jahanian 78289951a86b594513c2a013532ed45d197413b1087Chris Lattner for (ObjCMethodDecl::param_iterator PI = MDecl->param_begin(), 78389951a86b594513c2a013532ed45d197413b1087Chris Lattner E = MDecl->param_end(); PI != E; ++PI) { 78489951a86b594513c2a013532ed45d197413b1087Chris Lattner QualType ArgTy = (*PI)->getType(); 785306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian assert(!ArgTy.isNull() && "Couldn't parse type?"); 786306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian // Perform the default function/array conversion (C99 6.7.5.3p[7,8]). 787306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian // This matches the conversion that is done in 788e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner // Sema::ActOnParamDeclarator(). 789e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner if (ArgTy->isArrayType()) 790e6327747b72bb687c948270f702ff53c30f411a6Chris Lattner ArgTy = Context.getArrayDecayedType(ArgTy); 791306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian else if (ArgTy->isFunctionType()) 792306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian ArgTy = Context.getPointerType(ArgTy); 793306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian ArgTys.push_back(ArgTy); 794306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian } 795306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian T = Context.getFunctionType(T, &ArgTys[0], ArgTys.size(), 7967fb5e4888221cd36652d078c6b171ac55e7f406dArgyrios Kyrtzidis MDecl->isVariadic(), 0); 797306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian return T; 798306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian} 799306d68f5ef2eab86e0e86ebadd5a6eee1f752c0bFariborz Jahanian 8009e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// UnwrapSimilarPointerTypes - If T1 and T2 are pointer types that 8019e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// may be similar (C++ 4.4), replaces T1 and T2 with the type that 8029e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// they point to and return true. If T1 and T2 aren't pointer types 8039e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// or pointer-to-member types, or if they are not similar at this 8049e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// level, returns false and leaves T1 and T2 unchanged. Top-level 8059e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// qualifiers on T1 and T2 are ignored. This function will typically 8069e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// be called in a loop that successively "unwraps" pointer and 8079e5e4aaf8b8835b552819d68d29b6d94115d8a0bSebastian Redl/// pointer-to-member types to compare them at each level. 808ecb81f28cb279b7d8e84296445a4131fa80b69a9Chris Lattnerbool Sema::UnwrapSimilarPointerTypes(QualType& T1, QualType& T2) { 80957373266011f73418381b736015d8d2bb0381176Douglas Gregor const PointerType *T1PtrType = T1->getAsPointerType(), 81057373266011f73418381b736015d8d2bb0381176Douglas Gregor *T2PtrType = T2->getAsPointerType(); 81157373266011f73418381b736015d8d2bb0381176Douglas Gregor if (T1PtrType && T2PtrType) { 81257373266011f73418381b736015d8d2bb0381176Douglas Gregor T1 = T1PtrType->getPointeeType(); 81357373266011f73418381b736015d8d2bb0381176Douglas Gregor T2 = T2PtrType->getPointeeType(); 81457373266011f73418381b736015d8d2bb0381176Douglas Gregor return true; 81557373266011f73418381b736015d8d2bb0381176Douglas Gregor } 81657373266011f73418381b736015d8d2bb0381176Douglas Gregor 8174433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl const MemberPointerType *T1MPType = T1->getAsMemberPointerType(), 8184433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl *T2MPType = T2->getAsMemberPointerType(); 81921593acb933324b439bc68b68e7cc7d1c3e3484dSebastian Redl if (T1MPType && T2MPType && 82021593acb933324b439bc68b68e7cc7d1c3e3484dSebastian Redl Context.getCanonicalType(T1MPType->getClass()) == 82121593acb933324b439bc68b68e7cc7d1c3e3484dSebastian Redl Context.getCanonicalType(T2MPType->getClass())) { 8224433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl T1 = T1MPType->getPointeeType(); 8234433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl T2 = T2MPType->getPointeeType(); 8244433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl return true; 8254433aafbc2591b82e4ea2fc39c723b21d2497f4dSebastian Redl } 82657373266011f73418381b736015d8d2bb0381176Douglas Gregor return false; 82757373266011f73418381b736015d8d2bb0381176Douglas Gregor} 82857373266011f73418381b736015d8d2bb0381176Douglas Gregor 829cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian RedlSema::TypeResult Sema::ActOnTypeName(Scope *S, Declarator &D) { 8305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.6: Type names have no identifier. This is already validated by 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the parser. 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(D.getIdentifier() == 0 && "Type name should have no identifier!"); 8335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 834cee63fbf0e64ac526582312bf8cf33263fc5c16eSebastian Redl QualType T = GetTypeForDeclarator(D, S); 835809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor if (T.isNull()) 836809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor return true; 8375912a3544e438a92832b8c52c13f48d4f54795dcSteve Naroff 8386d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor // Check that there are no default arguments (C++ only). 8396d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor if (getLangOptions().CPlusPlus) 8406d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor CheckExtraCXXDefaultArguments(D); 8416d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor 8425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return T.getAsOpaquePtr(); 8435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 845c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner 846c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner 847c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 848c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner// Type Attribute Processing 849c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 850232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 851232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner/// HandleAddressSpaceTypeAttribute - Process an address_space attribute on the 852c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// specified type. The attribute contains 1 argument, the id of the address 853c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// space for the type. 854c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattnerstatic void HandleAddressSpaceTypeAttribute(QualType &Type, 855c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner const AttributeList &Attr, Sema &S){ 856232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // If this type is already address space qualified, reject it. 857232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // Clause 6.7.3 - Type qualifiers: "No type shall be qualified by qualifiers 858232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // for two or more different address spaces." 859232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner if (Type.getAddressSpace()) { 860c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_multiple_qualifiers); 861c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 862232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 863232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 864232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // Check the attribute arguments. 865545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 866f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 867c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 868232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 869545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *ASArgExpr = static_cast<Expr *>(Attr.getArg(0)); 870232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner llvm::APSInt addrSpace(32); 871c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner if (!ASArgExpr->isIntegerConstantExpr(addrSpace, S.Context)) { 872dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_space_not_int) 873dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << ASArgExpr->getSourceRange(); 874c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 875232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 876232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 877232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner unsigned ASIdx = static_cast<unsigned>(addrSpace.getZExtValue()); 878f11284ac87daa613bc7b30db9f54bd716d123222Fariborz Jahanian Type = S.Context.getAddrSpaceQualType(Type, ASIdx); 879c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner} 880c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner 881d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian/// HandleObjCGCTypeAttribute - Process an objc's gc attribute on the 882d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian/// specified type. The attribute contains 1 argument, weak or strong. 883d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanianstatic void HandleObjCGCTypeAttribute(QualType &Type, 8843b6b83b8311ecdfa43cbb37ccc38c107d3b8d88bChris Lattner const AttributeList &Attr, Sema &S) { 885d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian if (Type.getObjCGCAttr() != QualType::GCNone) { 8865934e75d98d99374f72722a69c5eefe026f35c74Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_multiple_objc_gc); 887d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian return; 888d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 889d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian 890d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian // Check the attribute arguments. 891ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian if (!Attr.getParameterName()) { 892ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 893ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian << "objc_gc" << 1; 894ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian return; 895ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian } 8963b6b83b8311ecdfa43cbb37ccc38c107d3b8d88bChris Lattner QualType::GCAttrTypes GCAttr; 897ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian if (Attr.getNumArgs() != 0) { 898d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 899d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian return; 900d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 901d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian if (Attr.getParameterName()->isStr("weak")) 9023b6b83b8311ecdfa43cbb37ccc38c107d3b8d88bChris Lattner GCAttr = QualType::Weak; 903d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian else if (Attr.getParameterName()->isStr("strong")) 9043b6b83b8311ecdfa43cbb37ccc38c107d3b8d88bChris Lattner GCAttr = QualType::Strong; 905d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian else { 906d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 907d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian << "objc_gc" << Attr.getParameterName(); 908d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian return; 909d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 910d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian 9113b6b83b8311ecdfa43cbb37ccc38c107d3b8d88bChris Lattner Type = S.Context.getObjCGCQualType(Type, GCAttr); 912d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian} 913d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian 914c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattnervoid Sema::ProcessTypeAttributeList(QualType &Result, const AttributeList *AL) { 915c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // Scan through and apply attributes to this type where it makes sense. Some 916c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // attributes (such as __address_space__, __vector_size__, etc) apply to the 917c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // type, but others can be present in the type specifiers even though they 918c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // apply to the decl. Here we apply type attributes and ignore the rest. 919c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner for (; AL; AL = AL->getNext()) { 920c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // If this is an attribute we can handle, do so now, otherwise, add it to 921c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // the LeftOverAttrs list for rechaining. 922c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner switch (AL->getKind()) { 923c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner default: break; 924c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner case AttributeList::AT_address_space: 925c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner HandleAddressSpaceTypeAttribute(Result, *AL, *this); 926c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner break; 927d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian case AttributeList::AT_objc_gc: 928d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian HandleObjCGCTypeAttribute(Result, *AL, *this); 929d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian break; 930c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner } 931c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner } 932232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner} 933232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 9344ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @brief If the type T is incomplete and cannot be completed, 9354ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// produce a suitable diagnostic. 9364ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9374ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// This routine checks whether the type @p T is complete in any 9384ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// context where a complete type is required. If @p T is a complete 9394ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// type, returns false. If @p T is incomplete, issues the diagnostic 9404ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @p diag (giving it the type @p T) and returns true. 9414ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9424ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param Loc The location in the source that the incomplete type 9434ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// diagnostic should refer to. 9444ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9454ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param T The type that this routine is examining for completeness. 9464ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9474ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param diag The diagnostic value (e.g., 9484ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @c diag::err_typecheck_decl_incomplete_type) that will be used 9494ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// for the error message if @p T is incomplete. 9504ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9514ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param Range1 An optional range in the source code that will be a 9524ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// part of the "incomplete type" error message. 9534ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9544ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param Range2 An optional range in the source code that will be a 9554ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// part of the "incomplete type" error message. 9564ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9574ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param PrintType If non-NULL, the type that should be printed 9584ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// instead of @p T. This parameter should be used when the type that 9594ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// we're checking for incompleteness isn't the type that should be 9604ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// displayed to the user, e.g., when T is a type and PrintType is a 9614ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// pointer to T. 9624ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9634ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @returns @c true if @p T is incomplete and a diagnostic was emitted, 9644ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @c false otherwise. 9654ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 9664ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @todo When Clang gets proper support for C++ templates, this 9674ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// routine will also be able perform template instantiation when @p T 9684ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// is a class template specialization. 9694ec339f43c0cae2678334850c90926bea10999c7Douglas Gregorbool Sema::DiagnoseIncompleteType(SourceLocation Loc, QualType T, unsigned diag, 9704ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor SourceRange Range1, SourceRange Range2, 9714ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor QualType PrintType) { 9724ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If we have a complete type, we're done. 9734ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (!T->isIncompleteType()) 9744ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return false; 9754ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 9764ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (PrintType.isNull()) 9774ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor PrintType = T; 9784ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 9794ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // We have an incomplete type. Produce a diagnostic. 9804ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Diag(Loc, diag) << PrintType << Range1 << Range2; 9813c0eb160ca1361a82b9f15b3b40a2425adc14d0fEli Friedman 9824ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If the type was a forward declaration of a class/struct/union 9834ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // type, produce 9844ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor const TagType *Tag = 0; 9854ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (const RecordType *Record = T->getAsRecordType()) 9864ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Tag = Record; 9874ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor else if (const EnumType *Enum = T->getAsEnumType()) 9884ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Tag = Enum; 9894ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 9904ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (Tag && !Tag->getDecl()->isInvalidDecl()) 9914ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Diag(Tag->getDecl()->getLocation(), 9924ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Tag->isBeingDefined() ? diag::note_type_being_defined 9934ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor : diag::note_forward_declaration) 9944ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor << QualType(Tag, 0); 9954ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 9964ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return true; 9974ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor} 998