SemaDeclAttr.cpp revision 2b7baf0816a40af3fde3a3e174192a549b785a50
16b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner//===--- SemaDeclAttr.cpp - Declaration Attribute Handling ----------------===// 26b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 36b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// The LLVM Compiler Infrastructure 46b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 56b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// This file is distributed under the University of Illinois Open Source 66b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// License. See LICENSE.TXT for details. 76b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 86b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner//===----------------------------------------------------------------------===// 96b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// This file implements decl-related attribute processing. 116b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner// 126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner//===----------------------------------------------------------------------===// 136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 146b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner#include "Sema.h" 1582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov#include "TargetAttributesSema.h" 166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner#include "clang/AST/ASTContext.h" 17acc5f3e42334525bf28c86471551f83dfce222d5Daniel Dunbar#include "clang/AST/DeclObjC.h" 18acc5f3e42334525bf28c86471551f83dfce222d5Daniel Dunbar#include "clang/AST/Expr.h" 19fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner#include "clang/Basic/TargetInfo.h" 2012bc692a78582f1cc32791325981aadcffb04c5eDaniel Dunbar#include "clang/Parse/DeclSpec.h" 21797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner#include "llvm/ADT/StringExtras.h" 226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattnerusing namespace clang; 236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 24e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 25e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner// Helper functions 26e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 27e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner 28a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic const FunctionType *getFunctionType(const Decl *d, 29a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek bool blocksToo = true) { 306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner QualType Ty; 31a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek if (const ValueDecl *decl = dyn_cast<ValueDecl>(d)) 326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = decl->getType(); 33a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek else if (const FieldDecl *decl = dyn_cast<FieldDecl>(d)) 346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = decl->getType(); 35a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek else if (const TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) 366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Ty = decl->getUnderlyingType(); 376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else 386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return 0; 39bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Ty->isFunctionPointerType()) 416217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek Ty = Ty->getAs<PointerType>()->getPointeeType(); 42755f9d2c65f75d539a2440e5de82d881e4417397Fariborz Jahanian else if (blocksToo && Ty->isBlockPointerType()) 436217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek Ty = Ty->getAs<BlockPointerType>()->getPointeeType(); 44d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar 45183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall return Ty->getAs<FunctionType>(); 466b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 476b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 483568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar// FIXME: We should provide an abstraction around a method or function 493568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar// to provide the following bits of information. 503568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 51d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes/// isFunction - Return true if the given decl has function 52a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek/// type (function or function-typed variable). 53a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic bool isFunction(const Decl *d) { 54a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek return getFunctionType(d, false) != NULL; 55a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek} 56a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek 57a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek/// isFunctionOrMethod - Return true if the given decl has function 58d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// type (function or function-typed variable) or an Objective-C 59d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// method. 60a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic bool isFunctionOrMethod(const Decl *d) { 61a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenek return isFunction(d)|| isa<ObjCMethodDecl>(d); 62d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar} 633568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 64620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian/// isFunctionOrMethodOrBlock - Return true if the given decl has function 65620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian/// type (function or function-typed variable) or an Objective-C 66620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian/// method or a block. 67a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic bool isFunctionOrMethodOrBlock(const Decl *d) { 68620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian if (isFunctionOrMethod(d)) 69620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian return true; 70620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian // check for block is more involved. 71620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian if (const VarDecl *V = dyn_cast<VarDecl>(d)) { 72620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian QualType Ty = V->getType(); 73620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian return Ty->isBlockPointerType(); 74620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian } 75d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian return isa<BlockDecl>(d); 76620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian} 77620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian 78d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// hasFunctionProto - Return true if the given decl has a argument 79d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// information. This decl should have already passed 80620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian/// isFunctionOrMethod or isFunctionOrMethodOrBlock. 81a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic bool hasFunctionProto(const Decl *d) { 82620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian if (const FunctionType *FnTy = getFunctionType(d)) 8372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor return isa<FunctionProtoType>(FnTy); 84620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian else { 85d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian assert(isa<ObjCMethodDecl>(d) || isa<BlockDecl>(d)); 86d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar return true; 87d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar } 883568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 893568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 90d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// getFunctionOrMethodNumArgs - Return number of function or method 91d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// arguments. It is an error to call this on a K&R function (use 92d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar/// hasFunctionProto first). 93a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic unsigned getFunctionOrMethodNumArgs(const Decl *d) { 9489951a86b594513c2a013532ed45d197413b1087Chris Lattner if (const FunctionType *FnTy = getFunctionType(d)) 9572564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor return cast<FunctionProtoType>(FnTy)->getNumArgs(); 96d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) 97d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian return BD->getNumParams(); 9889951a86b594513c2a013532ed45d197413b1087Chris Lattner return cast<ObjCMethodDecl>(d)->param_size(); 993568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 1003568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 101a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic QualType getFunctionOrMethodArgType(const Decl *d, unsigned Idx) { 10289951a86b594513c2a013532ed45d197413b1087Chris Lattner if (const FunctionType *FnTy = getFunctionType(d)) 10372564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor return cast<FunctionProtoType>(FnTy)->getArgType(Idx); 104d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) 105d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian return BD->getParamDecl(Idx)->getType(); 106bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 10789951a86b594513c2a013532ed45d197413b1087Chris Lattner return cast<ObjCMethodDecl>(d)->param_begin()[Idx]->getType(); 1083568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 1093568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 110a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic QualType getFunctionOrMethodResultType(const Decl *d) { 1115b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (const FunctionType *FnTy = getFunctionType(d)) 1125b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return cast<FunctionProtoType>(FnTy)->getResultType(); 1135b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return cast<ObjCMethodDecl>(d)->getResultType(); 1145b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian} 1155b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian 116a18d7d80eb914a48521f0b7b25057fb8a69c4652Ted Kremenekstatic bool isFunctionOrMethodVariadic(const Decl *d) { 117d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (const FunctionType *FnTy = getFunctionType(d)) { 11872564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor const FunctionProtoType *proto = cast<FunctionProtoType>(FnTy); 1193568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return proto->isVariadic(); 120d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) 121db9a0aec04cfd95830d3745b17b0bab5b87b16d1Ted Kremenek return BD->isVariadic(); 122d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian else { 1233568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar return cast<ObjCMethodDecl>(d)->isVariadic(); 1243568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar } 1253568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar} 1263568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar 1276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattnerstatic inline bool isNSStringType(QualType T, ASTContext &Ctx) { 128183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const ObjCObjectPointerType *PT = T->getAs<ObjCObjectPointerType>(); 129b77792eabf5882cf9af8cc810599b20432fda6c2Chris Lattner if (!PT) 1306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return false; 131bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 132506b57e8b79d7dc2c367bf2ee7ec95420ad3fc8fJohn McCall ObjCInterfaceDecl *Cls = PT->getObjectType()->getInterface(); 133506b57e8b79d7dc2c367bf2ee7ec95420ad3fc8fJohn McCall if (!Cls) 1346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return false; 135bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 136506b57e8b79d7dc2c367bf2ee7ec95420ad3fc8fJohn McCall IdentifierInfo* ClsName = Cls->getIdentifier(); 137bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Should we walk the chain of classes? 1396b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return ClsName == &Ctx.Idents.get("NSString") || 1406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner ClsName == &Ctx.Idents.get("NSMutableString"); 1416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 1426b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 143085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbarstatic inline bool isCFStringType(QualType T, ASTContext &Ctx) { 1446217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const PointerType *PT = T->getAs<PointerType>(); 145085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!PT) 146085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return false; 147085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 1486217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek const RecordType *RT = PT->getPointeeType()->getAs<RecordType>(); 149085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!RT) 150085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return false; 151bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 152085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar const RecordDecl *RD = RT->getDecl(); 153465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (RD->getTagKind() != TTK_Struct) 154085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return false; 155085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 156085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return RD->getIdentifier() == &Ctx.Idents.get("__CFString"); 157085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar} 158085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar 159e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 160e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner// Attribute Implementations 161e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner//===----------------------------------------------------------------------===// 162e5c5ee1cff9ec084f176fa252774262677857ad2Chris Lattner 1633068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar// FIXME: All this manual attribute parsing code is gross. At the 1643068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar// least add some helper functions to check most argument patterns (# 1653068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar// and types of args). 1663068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 167bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void HandleExtVectorTypeAttr(Scope *scope, Decl *d, 1689cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor const AttributeList &Attr, Sema &S) { 169545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); 170545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (tDecl == 0) { 171803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); 172545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner return; 1736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 174bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner QualType curType = tDecl->getUnderlyingType(); 1769cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 1779cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Expr *sizeExpr; 1789cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 1799cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // Special case where the argument is a template id. 1809cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor if (Attr.getParameterName()) { 181f7a1a744eba4b29ceb0f20af8f34515d892fdd64John McCall CXXScopeSpec SS; 182f7a1a744eba4b29ceb0f20af8f34515d892fdd64John McCall UnqualifiedId id; 183f7a1a744eba4b29ceb0f20af8f34515d892fdd64John McCall id.setIdentifier(Attr.getParameterName(), Attr.getLoc()); 184f7a1a744eba4b29ceb0f20af8f34515d892fdd64John McCall sizeExpr = S.ActOnIdExpression(scope, SS, id, false, false).takeAs<Expr>(); 1859cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } else { 1869cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // check the attribute arguments. 1879cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor if (Attr.getNumArgs() != 1) { 1889cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1899cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return; 1909cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 1919cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 1926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1939cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 1949cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // Instantiate/Install the vector type, and let Sema build the type for us. 1959cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // This will run the reguired checks. 1969cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor QualType T = S.BuildExtVectorType(curType, S.Owned(sizeExpr), Attr.getLoc()); 1979cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor if (!T.isNull()) { 198ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall // FIXME: preserve the old source info. 199a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall tDecl->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(T)); 200bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 2019cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // Remember this typedef decl, we will need it later for diagnostics. 2029cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor S.ExtVectorDecls.push_back(tDecl); 2036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 2046b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 2056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 206803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 2076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 208545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() > 0) { 2093c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 2106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 2116b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 212bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 2136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (TagDecl *TD = dyn_cast<TagDecl>(d)) 214a860e755f1f9f071b6a6a2f96128a6a258f5c331Anders Carlsson TD->addAttr(::new (S.Context) PackedAttr); 2156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { 2166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // If the alignment is less than or equal to 8 bits, the packed attribute 2176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // has no effect. 2186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!FD->getType()->isIncompleteType() && 219803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Context.getTypeAlign(FD->getType()) <= 8) 220fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type) 22108631c5fa053867146b5ee8be658c229f6bf127cChris Lattner << Attr.getName() << FD->getType(); 2226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else 223a860e755f1f9f071b6a6a2f96128a6a258f5c331Anders Carlsson FD->addAttr(::new (S.Context) PackedAttr); 2246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else 2253c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); 2266b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 2276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 22863e5d7c85299134f088033614afd9eb213c50b48Ted Kremenekstatic void HandleIBAction(Decl *d, const AttributeList &Attr, Sema &S) { 22996329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek // check the attribute arguments. 23096329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek if (Attr.getNumArgs() > 0) { 2313c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 23296329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek return; 23396329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek } 234bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 23563e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek // The IBAction attributes only apply to instance methods. 23663e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) 23763e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek if (MD->isInstanceMethod()) { 23863e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek d->addAttr(::new (S.Context) IBActionAttr()); 23963e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek return; 24063e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek } 24163e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek 24263e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek S.Diag(Attr.getLoc(), diag::err_attribute_ibaction) << Attr.getName(); 24363e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek} 24463e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek 24563e5d7c85299134f088033614afd9eb213c50b48Ted Kremenekstatic void HandleIBOutlet(Decl *d, const AttributeList &Attr, Sema &S) { 24663e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek // check the attribute arguments. 24763e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek if (Attr.getNumArgs() > 0) { 24863e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 24963e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek return; 25063e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek } 25163e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek 25263e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek // The IBOutlet attributes only apply to instance variables of 253efbddd23173ea5633cc8a004f1014c68c3ac6593Ted Kremenek // Objective-C classes. 254efbddd23173ea5633cc8a004f1014c68c3ac6593Ted Kremenek if (isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d)) { 25563e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek d->addAttr(::new (S.Context) IBOutletAttr()); 25663e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek return; 257efbddd23173ea5633cc8a004f1014c68c3ac6593Ted Kremenek } 25863e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek 25963e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet) << Attr.getName(); 26096329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek} 26196329d4e07a9bcddb5a927892b70408c8fd8c474Ted Kremenek 262857e918a8a40deb128840308a318bf623d68295fTed Kremenekstatic void HandleIBOutletCollection(Decl *d, const AttributeList &Attr, 263857e918a8a40deb128840308a318bf623d68295fTed Kremenek Sema &S) { 264857e918a8a40deb128840308a318bf623d68295fTed Kremenek 265857e918a8a40deb128840308a318bf623d68295fTed Kremenek // The iboutletcollection attribute can have zero or one arguments. 266857e918a8a40deb128840308a318bf623d68295fTed Kremenek if (Attr.getNumArgs() > 1) { 267857e918a8a40deb128840308a318bf623d68295fTed Kremenek S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 268857e918a8a40deb128840308a318bf623d68295fTed Kremenek return; 269857e918a8a40deb128840308a318bf623d68295fTed Kremenek } 270857e918a8a40deb128840308a318bf623d68295fTed Kremenek 271857e918a8a40deb128840308a318bf623d68295fTed Kremenek // The IBOutletCollection attributes only apply to instance variables of 272857e918a8a40deb128840308a318bf623d68295fTed Kremenek // Objective-C classes. 273857e918a8a40deb128840308a318bf623d68295fTed Kremenek if (!(isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d))) { 274857e918a8a40deb128840308a318bf623d68295fTed Kremenek S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet) << Attr.getName(); 275857e918a8a40deb128840308a318bf623d68295fTed Kremenek return; 276857e918a8a40deb128840308a318bf623d68295fTed Kremenek } 277857e918a8a40deb128840308a318bf623d68295fTed Kremenek 278857e918a8a40deb128840308a318bf623d68295fTed Kremenek // FIXME: Eventually accept the type argument. 279857e918a8a40deb128840308a318bf623d68295fTed Kremenek d->addAttr(::new (S.Context) IBOutletCollectionAttr()); 280857e918a8a40deb128840308a318bf623d68295fTed Kremenek} 281857e918a8a40deb128840308a318bf623d68295fTed Kremenek 282eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenekstatic void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { 283bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // GCC ignores the nonnull attribute on K&R style function prototypes, so we 284bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // ignore it as well 285d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { 286fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 2875dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 288eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 289eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 290bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 291d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar unsigned NumArgs = getFunctionOrMethodNumArgs(d); 292eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 293eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // The nonnull attribute only applies to pointers. 294eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek llvm::SmallVector<unsigned, 10> NonNullArgs; 295bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 296eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek for (AttributeList::arg_iterator I=Attr.arg_begin(), 297eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek E=Attr.arg_end(); I!=E; ++I) { 298bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 299bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 300eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // The argument must be an integer constant expression. 301f5e883474796afd26e52a010cd9bf90374fa1915Ted Kremenek Expr *Ex = static_cast<Expr *>(*I); 302eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek llvm::APSInt ArgNum(32); 303ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (Ex->isTypeDependent() || Ex->isValueDependent() || 304ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !Ex->isIntegerConstantExpr(ArgNum, S.Context)) { 305fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 306fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << Ex->getSourceRange(); 307eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 308eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 309bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 310eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek unsigned x = (unsigned) ArgNum.getZExtValue(); 311bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 312eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek if (x < 1 || x > NumArgs) { 313fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 31430bc96544346bea42921cf6837e66cef80d664b4Chris Lattner << "nonnull" << I.getArgNum() << Ex->getSourceRange(); 315eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 316eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 317bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 318465172f304248a9aab6f2c398a836ce4e25efbbfTed Kremenek --x; 319eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 320eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // Is the function argument a pointer type? 321bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump QualType T = getFunctionOrMethodArgType(d, x); 322dbfe99ef39163fd3574332673ee175c2bb6ef3caTed Kremenek if (!T->isAnyPointerType() && !T->isBlockPointerType()) { 323eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // FIXME: Should also highlight argument in decl. 324fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) 325fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << Ex->getSourceRange(); 3267fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek continue; 327eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 328bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 329eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek NonNullArgs.push_back(x); 330eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 331bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 332bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // If no arguments were specified to __attribute__((nonnull)) then all pointer 333bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // arguments have a nonnull attribute. 3347fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek if (NonNullArgs.empty()) { 33546bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { 33646bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek QualType T = getFunctionOrMethodArgType(d, I); 337dbfe99ef39163fd3574332673ee175c2bb6ef3caTed Kremenek if (T->isAnyPointerType() || T->isBlockPointerType()) 338d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar NonNullArgs.push_back(I); 33946bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek } 340bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 3417fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek if (NonNullArgs.empty()) { 3427fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); 3437fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek return; 3447fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek } 345eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 3467fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek 3477fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek unsigned* start = &NonNullArgs[0]; 3487fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek unsigned size = NonNullArgs.size(); 3497fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek std::sort(start, start + size); 3505961611172f1c210fbbaa55b3c692e13b1fc7be4Ted Kremenek d->addAttr(::new (S.Context) NonNullAttr(S.Context, start, size)); 351eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek} 352eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 35311e8ce7380856abee188b237c2600272df2ed09dRafael Espindolastatic bool isStaticVarOrStaticFunciton(Decl *D) { 35411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (VarDecl *VD = dyn_cast<VarDecl>(D)) 35511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return VD->getStorageClass() == VarDecl::Static; 35611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) 35711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return FD->getStorageClass() == FunctionDecl::Static; 35811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return false; 35911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola} 36011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 36111e8ce7380856abee188b237c2600272df2ed09dRafael Espindolastatic void HandleWeakRefAttr(Decl *d, const AttributeList &Attr, Sema &S) { 36211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // Check the attribute arguments. 36311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (Attr.getNumArgs() > 1) { 36411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 36511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 36611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 36711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 36811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // gcc rejects 36911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // class c { 37011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int a __attribute__((weakref ("v2"))); 37111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int b() __attribute__((weakref ("f3"))); 37211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // }; 37311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // and ignores the attributes of 37411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // void f(void) { 37511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int a __attribute__((weakref ("v2"))); 37611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // } 37711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // we reject them 37811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (const DeclContext *Ctx = d->getDeclContext()) { 37911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Ctx = Ctx->getLookupContext(); 38011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (!isa<TranslationUnitDecl>(Ctx) && !isa<NamespaceDecl>(Ctx) ) { 38111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_weakref_not_global_context) << 38211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola dyn_cast<NamedDecl>(d)->getNameAsString(); 38311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 38411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 38511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 38611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 38711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // The GCC manual says 38811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 38911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // At present, a declaration to which `weakref' is attached can only 39011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // be `static'. 39111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 39211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // It also says 39311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 39411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // Without a TARGET, 39511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // given as an argument to `weakref' or to `alias', `weakref' is 39611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // equivalent to `weak'. 39711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 39811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // gcc 4.4.1 will accept 39911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // int a7 __attribute__((weakref)); 40011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // as 40111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // int a7 __attribute__((weak)); 40211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // This looks like a bug in gcc. We reject that for now. We should revisit 40311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // it if this behaviour is actually used. 40411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 40511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (!isStaticVarOrStaticFunciton(d)) { 40611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_weakref_not_static) << 40711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola dyn_cast<NamedDecl>(d)->getNameAsString(); 40811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 40911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 41011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 41111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // GCC rejects 41211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static ((alias ("y"), weakref)). 41311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // Should we? How to check that weakref is before or after alias? 41411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 41511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (Attr.getNumArgs() == 1) { 41611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 41711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Arg = Arg->IgnoreParenCasts(); 41811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 41911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 42011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (Str == 0 || Str->isWide()) { 42111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 42211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola << "weakref" << 1; 42311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 42411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 42511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // GCC will accept anything as the argument of weakref. Should we 42611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // check for an existing decl? 42711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola d->addAttr(::new (S.Context) AliasAttr(S.Context, Str->getString())); 42811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 42911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 43011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola d->addAttr(::new (S.Context) WeakRefAttr()); 43111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola} 43211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 433803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { 4346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 435545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 4363c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 4376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 4386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 439bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 440545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 4416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Arg = Arg->IgnoreParenCasts(); 4426b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 443bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 4446b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Str == 0 || Str->isWide()) { 445fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 4463c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "alias" << 1; 4476b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 4486b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 449bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 4506b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: check if target symbol exists in current file 451bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 4523d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek d->addAttr(::new (S.Context) AliasAttr(S.Context, Str->getString())); 4536b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 4546b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 455bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, 456af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar Sema &S) { 457af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar // check the attribute arguments. 458af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar if (Attr.getNumArgs() != 0) { 4593c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 460af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar return; 461af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar } 4625bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson 463c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (!isa<FunctionDecl>(d)) { 4645bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 4655dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 4665bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson return; 4675bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson } 468bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 46940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AlwaysInlineAttr()); 470af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar} 471af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 47276168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynnstatic void HandleMallocAttr(Decl *d, const AttributeList &Attr, Sema &S) { 47376168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn // check the attribute arguments. 47476168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn if (Attr.getNumArgs() != 0) { 47576168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 47676168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn return; 47776168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn } 4781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4792cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType RetTy = FD->getResultType(); 4812cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek if (RetTy->isAnyPointerType() || RetTy->isBlockPointerType()) { 4822cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek d->addAttr(::new (S.Context) MallocAttr()); 4832cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek return; 4842cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek } 485fd6ad3cf9c8fc6904bd5f33212207aa69743fd45Ryan Flynn } 486fd6ad3cf9c8fc6904bd5f33212207aa69743fd45Ryan Flynn 4872cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek S.Diag(Attr.getLoc(), diag::warn_attribute_malloc_pointer_only); 48876168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn} 48976168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn 490b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenekstatic bool HandleCommonNoReturnAttr(Decl *d, const AttributeList &Attr, 491e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Sema &S) { 4926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 493545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 494e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 495b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek return false; 4966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 497d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar 49819c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump if (!isFunctionOrMethod(d) && !isa<BlockDecl>(d)) { 49919c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump ValueDecl *VD = dyn_cast<ValueDecl>(d); 5003ee77640c722a70ab7e0181f36dc2af21cab3d23Mike Stump if (VD == 0 || (!VD->getType()->isBlockPointerType() 5013ee77640c722a70ab7e0181f36dc2af21cab3d23Mike Stump && !VD->getType()->isFunctionPointerType())) { 502e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara S.Diag(Attr.getLoc(), 503e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 504e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara : diag::warn_attribute_wrong_decl_type) 505e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara << Attr.getName() << 0 /*function*/; 50619c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump return false; 50719c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump } 5086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 509bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 510b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek return true; 511b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek} 512b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek 513b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenekstatic void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { 514e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara /* Diagnostics (if any) was emitted by Sema::ProcessFnAttr(). */ 515e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara assert(Attr.isInvalid() == false); 516e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara d->addAttr(::new (S.Context) NoReturnAttr()); 517b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek} 518b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek 519b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenekstatic void HandleAnalyzerNoReturnAttr(Decl *d, const AttributeList &Attr, 520b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek Sema &S) { 521e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara if (HandleCommonNoReturnAttr(d, Attr, S)) 52240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AnalyzerNoReturnAttr()); 5236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 5246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 525bbd37c62e34db3f5a95c899723484a76c71d7757Sean Huntstatic void HandleDependencyAttr(Decl *d, const AttributeList &Attr, Sema &S) { 526bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (!isFunctionOrMethod(d) && !isa<ParmVarDecl>(d)) { 527bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type) 52804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << Attr.getName() << 8 /*function, method, or parameter*/; 529bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return; 530bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 531bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // FIXME: Actually store the attribute on the declaration 532bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt} 533bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 53473798892751e378cbcdef43579c1d41685091fd0Ted Kremenekstatic void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 53573798892751e378cbcdef43579c1d41685091fd0Ted Kremenek // check the attribute arguments. 53673798892751e378cbcdef43579c1d41685091fd0Ted Kremenek if (Attr.getNumArgs() != 0) { 5373c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 53873798892751e378cbcdef43579c1d41685091fd0Ted Kremenek return; 53973798892751e378cbcdef43579c1d41685091fd0Ted Kremenek } 540bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 541aec586056d8670c99ba7c4833be13e4eb123cddbJohn McCall if (!isa<VarDecl>(d) && !isa<ObjCIvarDecl>(d) && !isFunctionOrMethod(d) && 542aec586056d8670c99ba7c4833be13e4eb123cddbJohn McCall !isa<TypeDecl>(d)) { 543fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 5445dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 54573798892751e378cbcdef43579c1d41685091fd0Ted Kremenek return; 54673798892751e378cbcdef43579c1d41685091fd0Ted Kremenek } 547bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 54840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) UnusedAttr()); 54973798892751e378cbcdef43579c1d41685091fd0Ted Kremenek} 55073798892751e378cbcdef43579c1d41685091fd0Ted Kremenek 551b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbarstatic void HandleUsedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 552b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar // check the attribute arguments. 553b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar if (Attr.getNumArgs() != 0) { 554b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 555b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar return; 556b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } 557bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 558b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar if (const VarDecl *VD = dyn_cast<VarDecl>(d)) { 559186204bfcf9c53d48143ec300d4c3d036fed4140Daniel Dunbar if (VD->hasLocalStorage() || VD->hasExternalStorage()) { 560b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "used"; 561b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar return; 562b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } 563b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } else if (!isFunctionOrMethod(d)) { 564b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 5655dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 566b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar return; 567b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } 568bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 56940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) UsedAttr()); 570b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar} 571b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar 5723068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbarstatic void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { 5733068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar // check the attribute arguments. 5743068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { 575fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 576fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0 or 1"; 5773068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 578bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 5793068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 5803068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar int priority = 65535; // FIXME: Do not hardcode such constants. 5813068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() > 0) { 5823068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar Expr *E = static_cast<Expr *>(Attr.getArg(0)); 5833068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar llvm::APSInt Idx(32); 584ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (E->isTypeDependent() || E->isValueDependent() || 585ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !E->isIntegerConstantExpr(Idx, S.Context)) { 586fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 5873c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "constructor" << 1 << E->getSourceRange(); 5883068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 5893068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 5903068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar priority = Idx.getZExtValue(); 5913068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 592bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 593c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (!isa<FunctionDecl>(d)) { 594fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 5955dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 5963068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 5973068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 5983068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 59940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) ConstructorAttr(priority)); 6003068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar} 6013068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 6023068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbarstatic void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6033068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar // check the attribute arguments. 6043068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { 605fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 606fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0 or 1"; 6073068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 608bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 6093068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 6103068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar int priority = 65535; // FIXME: Do not hardcode such constants. 6113068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() > 0) { 6123068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar Expr *E = static_cast<Expr *>(Attr.getArg(0)); 6133068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar llvm::APSInt Idx(32); 614ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (E->isTypeDependent() || E->isValueDependent() || 615ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !E->isIntegerConstantExpr(Idx, S.Context)) { 616fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 6173c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "destructor" << 1 << E->getSourceRange(); 6183068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 6193068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 6203068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar priority = Idx.getZExtValue(); 6213068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 622bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 6236782fc6925a85c3772253e272745589a0c799c15Anders Carlsson if (!isa<FunctionDecl>(d)) { 624fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 6255dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 6263068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 6273068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 6283068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 62940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) DestructorAttr(priority)); 6303068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar} 6313068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 632803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 634545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 6353c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 638bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 63940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) DeprecatedAttr()); 6406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 642bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanianstatic void HandleUnavailableAttr(Decl *d, const AttributeList &Attr, Sema &S) { 643bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian // check the attribute arguments. 644bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian if (Attr.getNumArgs() != 0) { 645bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 646bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian return; 647bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian } 648bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 64940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) UnavailableAttr()); 650bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian} 651bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian 652803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6536b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 654545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 6553c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 6566b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6576b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 658bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 659545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 6606b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Arg = Arg->IgnoreParenCasts(); 6616b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 662bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 6636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Str == 0 || Str->isWide()) { 664fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 6653c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "visibility" << 1; 6666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 668bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 669c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer llvm::StringRef TypeStr = Str->getString(); 6706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner VisibilityAttr::VisibilityTypes type; 671bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 672c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer if (TypeStr == "default") 6736b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::DefaultVisibility; 674c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer else if (TypeStr == "hidden") 6756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::HiddenVisibility; 676c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer else if (TypeStr == "internal") 6776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::HiddenVisibility; // FIXME 678c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer else if (TypeStr == "protected") 6796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::ProtectedVisibility; 6806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else { 68108631c5fa053867146b5ee8be658c229f6bf127cChris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr; 6826b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 684bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 68540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) VisibilityAttr(type)); 6866b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 6880db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattnerstatic void HandleObjCExceptionAttr(Decl *D, const AttributeList &Attr, 6890db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner Sema &S) { 6900db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner if (Attr.getNumArgs() != 0) { 6910db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6920db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner return; 6930db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner } 694bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 6950db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner ObjCInterfaceDecl *OCI = dyn_cast<ObjCInterfaceDecl>(D); 6960db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner if (OCI == 0) { 6970db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_requires_objc_interface); 6980db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner return; 6990db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner } 700bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 70140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) ObjCExceptionAttr()); 7020db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner} 7030db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner 7040db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattnerstatic void HandleObjCNSObject(Decl *D, const AttributeList &Attr, Sema &S) { 705fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian if (Attr.getNumArgs() != 0) { 7062b7baf0816a40af3fde3a3e174192a549b785a50John McCall S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 707fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian return; 708fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian } 7090db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { 710fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian QualType T = TD->getUnderlyingType(); 711fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian if (!T->isPointerType() || 7126217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !T->getAs<PointerType>()->getPointeeType()->isRecordType()) { 713fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian S.Diag(TD->getLocation(), diag::err_nsobject_attribute); 714fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian return; 715fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian } 716fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian } 71740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) ObjCNSObjectAttr()); 718fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian} 719fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian 720bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void 721f9201e0ff1779567150b70856753d9f2c6a91467Douglas GregorHandleOverloadableAttr(Decl *D, const AttributeList &Attr, Sema &S) { 722f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor if (Attr.getNumArgs() != 0) { 7232b7baf0816a40af3fde3a3e174192a549b785a50John McCall S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 724f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor return; 725f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor } 726f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor 727f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor if (!isa<FunctionDecl>(D)) { 728f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor S.Diag(Attr.getLoc(), diag::err_attribute_overloadable_not_function); 729f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor return; 730f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor } 731f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor 73240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) OverloadableAttr()); 733f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor} 734f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor 7359eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroffstatic void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { 736bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump if (!Attr.getParameterName()) { 737fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 7383c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "blocks" << 1; 7399eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 7409eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 741bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 7429eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff if (Attr.getNumArgs() != 0) { 7433c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 7449eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 7459eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 746bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 7479eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff BlocksAttr::BlocksAttrTypes type; 74892e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner if (Attr.getParameterName()->isStr("byref")) 7499eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff type = BlocksAttr::ByRef; 7509eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff else { 751fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 7523c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "blocks" << Attr.getParameterName(); 7539eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 7549eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 755bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 75640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) BlocksAttr(type)); 7579eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff} 7589eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff 759770918281c5bdc7b5b3942285c407e3d62270053Anders Carlssonstatic void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { 760770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // check the attribute arguments. 761770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 2) { 762fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 763fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0, 1 or 2"; 764770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 765bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 766bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 767770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson int sentinel = 0; 768770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 0) { 769770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson Expr *E = static_cast<Expr *>(Attr.getArg(0)); 770770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson llvm::APSInt Idx(32); 771ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (E->isTypeDependent() || E->isValueDependent() || 772ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !E->isIntegerConstantExpr(Idx, S.Context)) { 773fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 7743c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "sentinel" << 1 << E->getSourceRange(); 775770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 776770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 777770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson sentinel = Idx.getZExtValue(); 778bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 779770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (sentinel < 0) { 780fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) 781fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << E->getSourceRange(); 782770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 783770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 784770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 785770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 786770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson int nullPos = 0; 787770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 1) { 788770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson Expr *E = static_cast<Expr *>(Attr.getArg(1)); 789770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson llvm::APSInt Idx(32); 790ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (E->isTypeDependent() || E->isValueDependent() || 791ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !E->isIntegerConstantExpr(Idx, S.Context)) { 792fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 7933c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "sentinel" << 2 << E->getSourceRange(); 794770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 795770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 796770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson nullPos = Idx.getZExtValue(); 797bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 798770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (nullPos > 1 || nullPos < 0) { 799770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // FIXME: This error message could be improved, it would be nice 800770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // to say what the bounds actually are. 801fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) 802fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << E->getSourceRange(); 803770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 804770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 805770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 806770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 807770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { 808183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const FunctionType *FT = FD->getType()->getAs<FunctionType>(); 809897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner assert(FT && "FunctionDecl has non-function type?"); 810bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 811897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner if (isa<FunctionNoProtoType>(FT)) { 812897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_named_arguments); 813897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner return; 814897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner } 815bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 816897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner if (!cast<FunctionProtoType>(FT)->isVariadic()) { 8173bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; 818770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 819bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 820770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { 821770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!MD->isVariadic()) { 8223bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; 823770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 8242f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } 8252f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } else if (isa<BlockDecl>(d)) { 826bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // Note! BlockDecl is typeless. Variadic diagnostics will be issued by the 827bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // caller. 8282f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian ; 8292f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } else if (const VarDecl *V = dyn_cast<VarDecl>(d)) { 8302f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian QualType Ty = V->getType(); 831daf0415583e33d5d279197c65e9227c1ed92474bFariborz Jahanian if (Ty->isBlockPointerType() || Ty->isFunctionPointerType()) { 832bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump const FunctionType *FT = Ty->isFunctionPointerType() ? getFunctionType(d) 833183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall : Ty->getAs<BlockPointerType>()->getPointeeType()->getAs<FunctionType>(); 8342f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian if (!cast<FunctionProtoType>(FT)->isVariadic()) { 8353bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian int m = Ty->isFunctionPointerType() ? 0 : 1; 8363bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << m; 8372f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian return; 8382f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } 839ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else { 8402f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 841ffb0081d0c0509eb4884143381cb3e5a5f6947b4Fariborz Jahanian << Attr.getName() << 6 /*function, method or block */; 8422f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian return; 8432f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } 844770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } else { 845fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 846ffb0081d0c0509eb4884143381cb3e5a5f6947b4Fariborz Jahanian << Attr.getName() << 6 /*function, method or block */; 847770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 848770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 84940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) SentinelAttr(sentinel, nullPos)); 850770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson} 851770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 852026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattnerstatic void HandleWarnUnusedResult(Decl *D, const AttributeList &Attr, Sema &S) { 853026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner // check the attribute arguments. 854026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner if (Attr.getNumArgs() != 0) { 855026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 856026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner return; 857026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner } 858026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner 859f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (!isFunction(D) && !isa<ObjCMethodDecl>(D)) { 860026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 8615dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 862026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner return; 863026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner } 864bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 865f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (isFunction(D) && getFunctionType(D)->getResultType()->isVoidType()) { 866f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_void_function_method) 867f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian << Attr.getName() << 0; 868f857798fa77ac50c6d0a262d96ad6176187190e3Nuno Lopes return; 869f857798fa77ac50c6d0a262d96ad6176187190e3Nuno Lopes } 870f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) 871f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (MD->getResultType()->isVoidType()) { 872f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_void_function_method) 873f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian << Attr.getName() << 1; 874f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian return; 875f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian } 876f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian 877d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes D->addAttr(::new (S.Context) WarnUnusedResultAttr()); 878026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner} 879026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner 880026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattnerstatic void HandleWeakAttr(Decl *D, const AttributeList &Attr, Sema &S) { 8816b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 882545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 8833c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 8846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8856b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8866e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 887f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian /* weak only applies to non-static declarations */ 88811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (isStaticVarOrStaticFunciton(D)) { 889f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_weak_static) << 890f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian dyn_cast<NamedDecl>(D)->getNameAsString(); 891f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian return; 892f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian } 893f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian 8946e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // TODO: could also be applied to methods? 8956e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) { 8966e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 8975dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 8986e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 8996e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } 900bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 90140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) WeakAttr()); 9026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 9036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 9046e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbarstatic void HandleWeakImportAttr(Decl *D, const AttributeList &Attr, Sema &S) { 9056e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // check the attribute arguments. 9066e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (Attr.getNumArgs() != 0) { 9076e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 9086e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 909bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 9106e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 9116e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // weak_import only applies to variable & function declarations. 9126e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar bool isDef = false; 9136e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (VarDecl *VD = dyn_cast<VarDecl>(D)) { 9146e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar isDef = (!VD->hasExternalStorage() || VD->getInit()); 9156e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 9166fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis isDef = FD->getBody(); 917d4edddde6d3966ad4a4f60d9af0f9dd36995495cFariborz Jahanian } else if (isa<ObjCPropertyDecl>(D) || isa<ObjCMethodDecl>(D)) { 918d4edddde6d3966ad4a4f60d9af0f9dd36995495cFariborz Jahanian // We ignore weak import on properties and methods 9191c90f4dc686ab872013544664c797604a309c563Mike Stump return; 9205f8f8571c52dbf12fdefb15d2fedbcccb212c15cFariborz Jahanian } else if (!(S.LangOpts.ObjCNonFragileABI && isa<ObjCInterfaceDecl>(D))) { 921c034974f103873bdccc91da99a30ab30295b5226Fariborz Jahanian // Don't issue the warning for darwin as target; yet, ignore the attribute. 9223be17941f1edff4843692066f9d33d438a517612Fariborz Jahanian if (S.Context.Target.getTriple().getOS() != llvm::Triple::Darwin || 923c034974f103873bdccc91da99a30ab30295b5226Fariborz Jahanian !isa<ObjCInterfaceDecl>(D)) 924c034974f103873bdccc91da99a30ab30295b5226Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 9253be17941f1edff4843692066f9d33d438a517612Fariborz Jahanian << Attr.getName() << 2 /*variable and function*/; 9263be17941f1edff4843692066f9d33d438a517612Fariborz Jahanian return; 9276e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } 9286e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 9296e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // Merge should handle any subsequent violations. 9306e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (isDef) { 931bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), 9326e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar diag::warn_attribute_weak_import_invalid_on_definition) 9336e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar << "weak_import" << 2 /*variable and function*/; 9346e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 9356e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } 9366e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 93740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) WeakImportAttr()); 9386e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar} 9396e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 9406f3d838867538638b9bbf412028e8537ae12f3e5Nate Begemanstatic void HandleReqdWorkGroupSize(Decl *D, const AttributeList &Attr, 9416f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman Sema &S) { 9426f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman // Attribute has 3 arguments. 9436f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman if (Attr.getNumArgs() != 3) { 9442b7baf0816a40af3fde3a3e174192a549b785a50John McCall S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 9456f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman return; 9466f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman } 9476f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman 9486f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman unsigned WGSize[3]; 9496f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman for (unsigned i = 0; i < 3; ++i) { 9506f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman Expr *E = static_cast<Expr *>(Attr.getArg(i)); 9516f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman llvm::APSInt ArgNum(32); 952ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (E->isTypeDependent() || E->isValueDependent() || 953ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !E->isIntegerConstantExpr(ArgNum, S.Context)) { 9546f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 9556f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman << "reqd_work_group_size" << E->getSourceRange(); 9566f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman return; 9576f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman } 9586f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman WGSize[i] = (unsigned) ArgNum.getZExtValue(); 9596f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman } 96040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) ReqdWorkGroupSizeAttr(WGSize[0], WGSize[1], 9616f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman WGSize[2])); 9626f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman} 9636f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman 964026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattnerstatic void HandleSectionAttr(Decl *D, const AttributeList &Attr, Sema &S) { 96517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar // Attribute has no arguments. 96617f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (Attr.getNumArgs() != 1) { 96717f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 96817f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar return; 96917f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar } 97017f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 97117f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar // Make sure that there is a string literal as the sections's single 97217f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar // argument. 973797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); 974797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); 97517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (!SE) { 976797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) << "section"; 97717f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar return; 97817f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar } 9791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 980797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner // If the target wants to validate the section specifier, make it happen. 981bb377edda2656752016a0bc01fe4f9f8b6f80e19Benjamin Kramer std::string Error = S.Context.Target.isValidSectionSpecifier(SE->getString()); 982a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner if (!Error.empty()) { 983a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner S.Diag(SE->getLocStart(), diag::err_attribute_section_invalid_for_target) 984a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner << Error; 985797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner return; 986797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner } 9871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 988a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner // This attribute cannot be applied to local variables. 989a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner if (isa<VarDecl>(D) && cast<VarDecl>(D)->hasLocalStorage()) { 990a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner S.Diag(SE->getLocStart(), diag::err_attribute_section_local_variable); 991a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner return; 992a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner } 993a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner 9943d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek D->addAttr(::new (S.Context) SectionAttr(S.Context, SE->getString())); 99517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar} 99617f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 9976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 998803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { 9996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1000545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 10013c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 10026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 10036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1004bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 100540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) NoThrowAttr()); 10066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 10076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1008232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlssonstatic void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1009232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson // check the attribute arguments. 1010232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (Attr.getNumArgs() != 0) { 10113c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1012232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson return; 1013232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson } 1014bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 101540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) ConstAttr()); 1016232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson} 1017232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 1018232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlssonstatic void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1019232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson // check the attribute arguments. 1020232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (Attr.getNumArgs() != 0) { 10213c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1022232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson return; 1023232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson } 1024bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 102540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) PureAttr()); 1026232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson} 1027232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 1028f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlssonstatic void HandleCleanupAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1029bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump if (!Attr.getParameterName()) { 1030f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1031f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1032f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1033bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1034f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (Attr.getNumArgs() != 0) { 1035f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1036f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1037f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1038bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1039f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson VarDecl *VD = dyn_cast<VarDecl>(d); 1040bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1041f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (!VD || !VD->hasLocalStorage()) { 1042f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "cleanup"; 1043f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1044f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1045bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1046f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson // Look up the function 1047c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor // FIXME: Lookup probably isn't looking in the right place 1048c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor // FIXME: The lookup source location should be in the attribute, not the 1049c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor // start of the attribute. 1050f36e02d4aff98bf2e52e342e0038d4172fbb5e64John McCall NamedDecl *CleanupDecl 1051c83c6874e3bf1432d3df5e8d3530f8561ff5441fDouglas Gregor = S.LookupSingleName(S.TUScope, Attr.getParameterName(), Attr.getLoc(), 1052f36e02d4aff98bf2e52e342e0038d4172fbb5e64John McCall Sema::LookupOrdinaryName); 1053f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (!CleanupDecl) { 105489941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_found) << 1055f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson Attr.getParameterName(); 1056f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1057f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1058bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1059f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson FunctionDecl *FD = dyn_cast<FunctionDecl>(CleanupDecl); 1060f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (!FD) { 106189941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_function) << 1062f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson Attr.getParameterName(); 1063f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1064f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1065f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson 1066f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (FD->getNumParams() != 1) { 106789941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_func_must_take_one_arg) << 1068f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson Attr.getParameterName(); 1069f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1070f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1071bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 107289941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson // We're currently more strict than GCC about what function types we accept. 107389941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson // If this ever proves to be a problem it should be easy to fix. 107489941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson QualType Ty = S.Context.getPointerType(VD->getType()); 107589941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson QualType ParamTy = FD->getParamDecl(0)->getType(); 1076d5e3e8ec50d6ea481b3bc841dcbe853175d05122Eli Friedman if (S.CheckAssignmentConstraints(ParamTy, Ty) != Sema::Compatible) { 1077bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), 107889941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson diag::err_attribute_cleanup_func_arg_incompatible_type) << 107989941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson Attr.getParameterName() << ParamTy << Ty; 108089941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson return; 108189941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson } 1082bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 108340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) CleanupAttr(FD)); 1084f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson} 1085f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson 1086bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// Handle __attribute__((format_arg((idx)))) attribute based on 1087bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html 1088bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void HandleFormatArgAttr(Decl *d, const AttributeList &Attr, Sema &S) { 10895b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (Attr.getNumArgs() != 1) { 10905b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 10915b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 10925b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 10935b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { 10945b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 10955b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << Attr.getName() << 0 /*function*/; 10965b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 10975b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 1098bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // FIXME: in C++ the implicit 'this' function parameter also counts. this is 1099bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // needed in order to be compatible with GCC the index must start with 1. 11005b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian unsigned NumArgs = getFunctionOrMethodNumArgs(d); 11015b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian unsigned FirstIdx = 1; 11025b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // checks for the 2nd argument 11035b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); 11045b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian llvm::APSInt Idx(32); 1105ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent() || 1106ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { 11075b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 11085b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << "format" << 2 << IdxExpr->getSourceRange(); 11095b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 11105b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 1111bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 11125b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { 11135b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 11145b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << "format" << 2 << IdxExpr->getSourceRange(); 11155b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 11165b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 1117bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 11185b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian unsigned ArgIdx = Idx.getZExtValue() - 1; 1119bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 11205b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // make sure the format string is really a string 11215b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); 1122bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 11235b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian bool not_nsstring_type = !isNSStringType(Ty, S.Context); 11245b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (not_nsstring_type && 11255b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian !isCFStringType(Ty, S.Context) && 11265b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian (!Ty->isPointerType() || 11276217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { 11285b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // FIXME: Should highlight the actual expression that has the wrong type. 11295b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1130bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump << (not_nsstring_type ? "a string type" : "an NSString") 11315b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << IdxExpr->getSourceRange(); 11325b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 1133bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 11345b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian Ty = getFunctionOrMethodResultType(d); 11355b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (!isNSStringType(Ty, S.Context) && 11365b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian !isCFStringType(Ty, S.Context) && 11375b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian (!Ty->isPointerType() || 11386217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { 11395b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // FIXME: Should highlight the actual expression that has the wrong type. 11405b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_format_attribute_result_not) 1141bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump << (not_nsstring_type ? "string type" : "NSString") 11425b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << IdxExpr->getSourceRange(); 11435b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 1144bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 1145bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 114640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) FormatArgAttr(Idx.getZExtValue())); 11475b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian} 11485b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian 11492b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbarenum FormatAttrKind { 11502b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar CFStringFormat, 11512b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar NSStringFormat, 11522b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar StrftimeFormat, 11532b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar SupportedFormat, 11543c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner IgnoredFormat, 11552b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar InvalidFormat 11562b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar}; 11572b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 11582b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar/// getFormatAttrKind - Map from format attribute names to supported format 11592b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar/// types. 11602b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbarstatic FormatAttrKind getFormatAttrKind(llvm::StringRef Format) { 11612b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar // Check for formats that get handled specially. 11622b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "NSString") 11632b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return NSStringFormat; 11642b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "CFString") 11652b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return CFStringFormat; 11662b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "strftime") 11672b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return StrftimeFormat; 11682b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 11692b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar // Otherwise, check for supported formats. 11702b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "scanf" || Format == "printf" || Format == "printf0" || 11712b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format == "strfmon" || Format == "cmn_err" || Format == "strftime" || 11722b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format == "NSString" || Format == "CFString" || Format == "vcmn_err" || 11732b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format == "zcmn_err") 11742b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return SupportedFormat; 11752b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 1176bc52595e01323ca22d65c68aafd53a1acb8c1fb6Duncan Sands if (Format == "gcc_diag" || Format == "gcc_cdiag" || 1177bc52595e01323ca22d65c68aafd53a1acb8c1fb6Duncan Sands Format == "gcc_cxxdiag" || Format == "gcc_tdiag") 11783c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner return IgnoredFormat; 11793c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner 11802b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return InvalidFormat; 11812b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar} 11822b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 1183bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// Handle __attribute__((format(type,idx,firstarg))) attributes based on 1184bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html 1185803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { 11866b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1187545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (!Attr.getParameterName()) { 1188fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 11893c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 1; 11906b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 11916b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 11926b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1193545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 2) { 11943c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; 11956b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 11966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 11976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1198620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian if (!isFunctionOrMethodOrBlock(d) || !hasFunctionProto(d)) { 1199fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 12005dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 12016b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12043568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar unsigned NumArgs = getFunctionOrMethodNumArgs(d); 12056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned FirstIdx = 1; 12066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 120701eb9b9683535d8a65c704ad2c545903409e2d36Daniel Dunbar llvm::StringRef Format = Attr.getParameterName()->getName(); 12086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Normalize the argument, __foo__ becomes foo. 12102b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format.startswith("__") && Format.endswith("__")) 12112b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format = Format.substr(2, Format.size() - 4); 12122b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 12132b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar // Check for supported formats. 12142b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar FormatAttrKind Kind = getFormatAttrKind(Format); 12153c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner 12163c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner if (Kind == IgnoredFormat) 12173c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner return; 12183c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner 12192b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Kind == InvalidFormat) { 1220fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 122101eb9b9683535d8a65c704ad2c545903409e2d36Daniel Dunbar << "format" << Attr.getParameterName()->getName(); 12226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12256b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // checks for the 2nd argument 1226545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); 1227803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner llvm::APSInt Idx(32); 1228ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent() || 1229ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { 1230fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 12313c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 2 << IdxExpr->getSourceRange(); 12326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12354fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson // FIXME: We should handle the implicit 'this' parameter in a more generic 12364fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson // way that can be used for other arguments. 12374fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson bool HasImplicitThisParam = false; 12384fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(d)) { 12394fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson if (MD->isInstance()) { 12404fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson HasImplicitThisParam = true; 12414fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson NumArgs++; 12424fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson } 12434fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson } 12441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12456b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { 1246fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 12473c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 2 << IdxExpr->getSourceRange(); 12486b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12496b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12506b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12516b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Do we need to bounds check? 12526b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned ArgIdx = Idx.getZExtValue() - 1; 1253bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 12544a2614e94672c47395abcde60518776fbebec589Sebastian Redl if (HasImplicitThisParam) { 12554a2614e94672c47395abcde60518776fbebec589Sebastian Redl if (ArgIdx == 0) { 12564a2614e94672c47395abcde60518776fbebec589Sebastian Redl S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 12574a2614e94672c47395abcde60518776fbebec589Sebastian Redl << "a string type" << IdxExpr->getSourceRange(); 12584a2614e94672c47395abcde60518776fbebec589Sebastian Redl return; 12594a2614e94672c47395abcde60518776fbebec589Sebastian Redl } 12604a2614e94672c47395abcde60518776fbebec589Sebastian Redl ArgIdx--; 12614a2614e94672c47395abcde60518776fbebec589Sebastian Redl } 12621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // make sure the format string is really a string 12643568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); 12656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12662b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Kind == CFStringFormat) { 1267085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!isCFStringType(Ty, S.Context)) { 1268fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1269fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "a CFString" << IdxExpr->getSourceRange(); 1270085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return; 1271085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar } 12722b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar } else if (Kind == NSStringFormat) { 1273390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: do we need to check if the type is NSString*? What are the 1274390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // semantics? 1275803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!isNSStringType(Ty, S.Context)) { 1276390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Should highlight the actual expression that has the wrong type. 1277fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1278fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "an NSString" << IdxExpr->getSourceRange(); 12796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 1280bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 12816b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else if (!Ty->isPointerType() || 12826217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !Ty->getAs<PointerType>()->getPointeeType()->isCharType()) { 1283390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Should highlight the actual expression that has the wrong type. 1284fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1285fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "a string type" << IdxExpr->getSourceRange(); 12866b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12886b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12896b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the 3rd argument 1290545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); 1291803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner llvm::APSInt FirstArg(32); 1292ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (FirstArgExpr->isTypeDependent() || FirstArgExpr->isValueDependent() || 1293ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { 1294fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 12953c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 3 << FirstArgExpr->getSourceRange(); 12966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check if the function is variadic if the 3rd argument non-zero 13006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FirstArg != 0) { 13013568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar if (isFunctionOrMethodVariadic(d)) { 13026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner ++NumArgs; // +1 for ... 13036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else { 1304803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); 13056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13093c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner // strftime requires FirstArg to be 0 because it doesn't read from any 13103c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner // variable the input is just the current time + the format string. 13112b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Kind == StrftimeFormat) { 13126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FirstArg != 0) { 1313fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) 1314fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << FirstArgExpr->getSourceRange(); 13156b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // if 0 it disables parameter checking (to use with e.g. va_list) 13186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else if (FirstArg != 0 && FirstArg != NumArgs) { 1319fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 13203c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 3 << FirstArgExpr->getSourceRange(); 13216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13243d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek d->addAttr(::new (S.Context) FormatAttr(S.Context, Format, Idx.getZExtValue(), 13252b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar FirstArg.getZExtValue())); 13266b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 13276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13280b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, 13290b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner Sema &S) { 13306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1331545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 13323c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 13336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13356b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13360c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor // Try to find the underlying union declaration. 13370c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor RecordDecl *RD = 0; 1338bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman TypedefDecl *TD = dyn_cast<TypedefDecl>(d); 13390c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (TD && TD->getUnderlyingType()->isUnionType()) 13400c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); 13410c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor else 13420c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor RD = dyn_cast<RecordDecl>(d); 13430c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor 13440c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (!RD || !RD->isUnion()) { 1345fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 13465dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 1 /*union*/; 13476b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13486b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13496b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13500c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (!RD->isDefinition()) { 1351bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), 13520c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::warn_transparent_union_attribute_not_definition); 13530c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor return; 13540c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor } 13550c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor 135617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator Field = RD->field_begin(), 135717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RD->field_end(); 13580c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (Field == FieldEnd) { 13590c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor S.Diag(Attr.getLoc(), diag::warn_transparent_union_attribute_zero_fields); 13600c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor return; 13610c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor } 1362bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman 13630c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor FieldDecl *FirstField = *Field; 13640c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor QualType FirstType = FirstField->getType(); 13650c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (FirstType->isFloatingType() || FirstType->isVectorType()) { 1366bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(FirstField->getLocation(), 13670c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::warn_transparent_union_attribute_floating); 13680c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor return; 13690c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor } 1370bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman 13710c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor uint64_t FirstSize = S.Context.getTypeSize(FirstType); 13720c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor uint64_t FirstAlign = S.Context.getTypeAlign(FirstType); 13730c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor for (; Field != FieldEnd; ++Field) { 13740c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor QualType FieldType = Field->getType(); 13750c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (S.Context.getTypeSize(FieldType) != FirstSize || 13760c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor S.Context.getTypeAlign(FieldType) != FirstAlign) { 13770c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor // Warn if we drop the attribute. 13780c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor bool isSize = S.Context.getTypeSize(FieldType) != FirstSize; 1379bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump unsigned FieldBits = isSize? S.Context.getTypeSize(FieldType) 13800c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor : S.Context.getTypeAlign(FieldType); 1381bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Field->getLocation(), 13820c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::warn_transparent_union_attribute_field_size_align) 13830c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor << isSize << Field->getDeclName() << FieldBits; 13840c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor unsigned FirstBits = isSize? FirstSize : FirstAlign; 1385bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(FirstField->getLocation(), 13860c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::note_transparent_union_first_field_size_align) 13870c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor << isSize << FirstBits; 1388bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman return; 1389bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman } 1390bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman } 13916b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 139240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis RD->addAttr(::new (S.Context) TransparentUnionAttr()); 13936b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 13946b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13950b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { 13966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1397545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 13983c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 13996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 14006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1401797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); 1402797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); 1403bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 14046b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Make sure that there is a string literal as the annotation's single 14056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // argument. 14066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!SE) { 1407797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) <<"annotate"; 14086b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 14096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 14103d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek d->addAttr(::new (S.Context) AnnotateAttr(S.Context, SE->getString())); 14116b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 14126b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1413803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 14146b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1415545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() > 1) { 14163c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 14176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 14186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1419bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 1420bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt //FIXME: The C++0x version of this attribute has more limited applicabilty 1421bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // than GNU's, and should error out when it is used to specify a 1422bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // weaker alignment, rather than being silently ignored. 14236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 14246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned Align = 0; 1425545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() == 0) { 14266b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: This should be the target specific maximum alignment. 14277549c5589ac0d2087e55f2bdd4854adef23f29fdDaniel Dunbar // (For now we just use 128 bits which is the maximum on X86). 14286b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Align = 128; 142940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AlignedAttr(Align)); 14306b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 14316b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1432bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 143349e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); 143449e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner llvm::APSInt Alignment(32); 1435ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (alignmentExpr->isTypeDependent() || alignmentExpr->isValueDependent() || 1436ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { 1437fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 1438fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "aligned" << alignmentExpr->getSourceRange(); 143949e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner return; 144049e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner } 1441396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar if (!llvm::isPowerOf2_64(Alignment.getZExtValue())) { 1442bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), diag::err_attribute_aligned_not_power_of_two) 1443396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar << alignmentExpr->getSourceRange(); 1444396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar return; 1445396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar } 1446396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar 144740b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AlignedAttr(Alignment.getZExtValue() * 8)); 14486b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 1449fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1450bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// HandleModeAttr - This attribute modifies the width of a decl with primitive 1451bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// type. 1452fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// 1453bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// Despite what would be logical, the mode attribute is a decl attribute, not a 1454bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make 'G' be 1455bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// HImode, not an intermediate pointer. 14560b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { 1457fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // This attribute isn't documented, but glibc uses it. It changes 1458fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // the width of an int or unsigned int to the specified size. 1459fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1460fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Check that there aren't any arguments 1461fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (Attr.getNumArgs() != 0) { 14623c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1463fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1464fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1465fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1466fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner IdentifierInfo *Name = Attr.getParameterName(); 1467fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!Name) { 14680b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); 1469fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1470fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1471210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar 147201eb9b9683535d8a65c704ad2c545903409e2d36Daniel Dunbar llvm::StringRef Str = Attr.getParameterName()->getName(); 1473fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1474fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Normalize the attribute name, __foo__ becomes foo. 1475210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar if (Str.startswith("__") && Str.endswith("__")) 1476210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar Str = Str.substr(2, Str.size() - 4); 1477fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1478fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner unsigned DestWidth = 0; 1479fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner bool IntegerMode = true; 148073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman bool ComplexMode = false; 1481210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar switch (Str.size()) { 1482fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 2: 148373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman switch (Str[0]) { 148473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'Q': DestWidth = 8; break; 148573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'H': DestWidth = 16; break; 148673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'S': DestWidth = 32; break; 148773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'D': DestWidth = 64; break; 148873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'X': DestWidth = 96; break; 148973397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'T': DestWidth = 128; break; 149073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 149173397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (Str[1] == 'F') { 149273397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman IntegerMode = false; 149373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else if (Str[1] == 'C') { 149473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman IntegerMode = false; 149573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman ComplexMode = true; 149673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else if (Str[1] != 'I') { 149773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman DestWidth = 0; 149873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 1499fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1500fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 4: 1501fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // FIXME: glibc uses 'word' to define register_t; this is narrower than a 1502fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // pointer on PIC16 and other embedded platforms. 1503210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar if (Str == "word") 15040b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getPointerWidth(0); 1505210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar else if (Str == "byte") 15060b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getCharWidth(); 1507fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1508fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 7: 1509210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar if (Str == "pointer") 15100b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getPointerWidth(0); 1511fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1512fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1513fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1514fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner QualType OldTy; 1515fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) 1516fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner OldTy = TD->getUnderlyingType(); 1517fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) 1518fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner OldTy = VD->getType(); 1519fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else { 1520fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(D->getLocation(), diag::err_attr_wrong_decl) 1521fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); 1522fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1523fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 152473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman 1525183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType()) 152673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); 152773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman else if (IntegerMode) { 152873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!OldTy->isIntegralType()) 152973397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 153073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else if (ComplexMode) { 153173397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!OldTy->isComplexType()) 153273397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 153373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else { 153473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!OldTy->isFloatingType()) 153573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 153673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 153773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman 1538390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Sync this with InitializePredefinedMacros; we need to match int8_t 1539390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // and friends, at least with glibc. 1540390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Make sure 32/64-bit integers don't get defined to types of the wrong 1541390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // width on unusual platforms. 1542f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman // FIXME: Make sure floating-point mappings are accurate 1543f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman // FIXME: Support XF and TF types 1544fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner QualType NewTy; 1545fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner switch (DestWidth) { 1546fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 0: 15473c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; 1548fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1549fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner default: 15503c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 1551fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1552fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 8: 155373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!IntegerMode) { 155473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 155573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman return; 155673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 1557fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (OldTy->isSignedIntegerType()) 15580b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.SignedCharTy; 1559fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 15600b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedCharTy; 1561fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1562fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 16: 156373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!IntegerMode) { 156473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 156573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman return; 156673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 1567fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (OldTy->isSignedIntegerType()) 15680b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.ShortTy; 1569fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 15700b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedShortTy; 1571fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1572fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 32: 1573fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!IntegerMode) 15740b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.FloatTy; 1575fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (OldTy->isSignedIntegerType()) 15760b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.IntTy; 1577fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 15780b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedIntTy; 1579fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1580fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 64: 1581fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!IntegerMode) 15820b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.DoubleTy; 1583fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (OldTy->isSignedIntegerType()) 1584aec7caa3c40891727164167ece11d552422803d2Chandler Carruth if (S.Context.Target.getLongWidth() == 64) 1585aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.LongTy; 1586aec7caa3c40891727164167ece11d552422803d2Chandler Carruth else 1587aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.LongLongTy; 1588fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 1589aec7caa3c40891727164167ece11d552422803d2Chandler Carruth if (S.Context.Target.getLongWidth() == 64) 1590aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.UnsignedLongTy; 1591aec7caa3c40891727164167ece11d552422803d2Chandler Carruth else 1592aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.UnsignedLongLongTy; 1593fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 159473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 96: 159573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman NewTy = S.Context.LongDoubleTy; 159673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman break; 1597f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman case 128: 1598f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman if (!IntegerMode) { 1599f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 1600f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman return; 1601f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman } 1602f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson if (OldTy->isSignedIntegerType()) 1603f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson NewTy = S.Context.Int128Ty; 1604f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson else 1605f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson NewTy = S.Context.UnsignedInt128Ty; 160673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman break; 1607fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1608fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 160973397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (ComplexMode) { 161073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman NewTy = S.Context.getComplexType(NewTy); 1611fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1612fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1613fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Install the new type. 1614ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { 1615ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall // FIXME: preserve existing source info. 1616a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TD->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(NewTy)); 1617ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall } else 1618fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner cast<ValueDecl>(D)->setType(NewTy); 1619fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner} 16200744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 16211feade8e520be483293dbf55eb57a51720899589Mike Stumpstatic void HandleNoDebugAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1622d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson // check the attribute arguments. 1623d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson if (Attr.getNumArgs() > 0) { 1624d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1625d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson return; 1626d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson } 1627e896d98548b02223c7740d807a0aa6e20fba7079Anders Carlsson 16285bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson if (!isFunctionOrMethod(d)) { 1629d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16305dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 1631d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson return; 1632d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson } 1633bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 16341feade8e520be483293dbf55eb57a51720899589Mike Stump d->addAttr(::new (S.Context) NoDebugAttr()); 1635d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson} 1636d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson 16371feade8e520be483293dbf55eb57a51720899589Mike Stumpstatic void HandleNoInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { 16385bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson // check the attribute arguments. 16395bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson if (Attr.getNumArgs() != 0) { 16405bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 16415bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson return; 16425bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson } 1643bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1644c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (!isa<FunctionDecl>(d)) { 16455bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16465dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 16475bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson return; 16485bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson } 1649bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 16501feade8e520be483293dbf55eb57a51720899589Mike Stump d->addAttr(::new (S.Context) NoInlineAttr()); 16515bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson} 16525bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson 1653cf2a7211b4785068c7efa836baab90b198a4d2a6Chris Lattnerstatic void HandleGNUInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { 165426e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner // check the attribute arguments. 165526e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner if (Attr.getNumArgs() != 0) { 165626e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 165726e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner return; 165826e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner } 1659bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1660c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); 1661c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (Fn == 0) { 166226e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16635dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 166426e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner return; 166526e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner } 1666bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 16670130f3cc4ccd5f46361c48d5fe94133d74619424Douglas Gregor if (!Fn->isInlineSpecified()) { 1668cf2a7211b4785068c7efa836baab90b198a4d2a6Chris Lattner S.Diag(Attr.getLoc(), diag::warn_gnu_inline_attribute_requires_inline); 1669c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner return; 1670c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner } 1671bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 167240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) GNUInlineAttr()); 167326e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner} 167426e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner 1675e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnarastatic void HandleCallConvAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1676e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara // Diagnostic is emitted elsewhere: here we store the (valid) Attr 1677e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara // in the Decl node for syntactic reasoning, e.g., pretty-printing. 1678e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara assert(Attr.isInvalid() == false); 1679e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara 1680e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara switch (Attr.getKind()) { 1681e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara case AttributeList::AT_fastcall: 1682e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara d->addAttr(::new (S.Context) FastCallAttr()); 1683e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara return; 1684e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara case AttributeList::AT_stdcall: 1685e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara d->addAttr(::new (S.Context) StdCallAttr()); 1686e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara return; 1687f813a2c03fcb05381b3252010435f557eb6b3cdeDouglas Gregor case AttributeList::AT_thiscall: 1688f813a2c03fcb05381b3252010435f557eb6b3cdeDouglas Gregor d->addAttr(::new (S.Context) ThisCallAttr()); 1689e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara case AttributeList::AT_cdecl: 1690e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara d->addAttr(::new (S.Context) CDeclAttr()); 1691e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara return; 1692e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara default: 1693e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara llvm_unreachable("unexpected attribute kind"); 1694e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara return; 1695e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara } 1696e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara} 1697e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara 1698ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanianstatic void HandleRegparmAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1699ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian // check the attribute arguments. 1700ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian if (Attr.getNumArgs() != 1) { 170155d3aaf9a537888734762170823daf750ea9036dEli Friedman S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1702ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian return; 1703ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian } 170455d3aaf9a537888734762170823daf750ea9036dEli Friedman 1705ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian if (!isFunctionOrMethod(d)) { 1706ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 17075dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 1708ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian return; 1709ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian } 171055d3aaf9a537888734762170823daf750ea9036dEli Friedman 171155d3aaf9a537888734762170823daf750ea9036dEli Friedman Expr *NumParamsExpr = static_cast<Expr *>(Attr.getArg(0)); 171255d3aaf9a537888734762170823daf750ea9036dEli Friedman llvm::APSInt NumParams(32); 1713ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (NumParamsExpr->isTypeDependent() || NumParamsExpr->isValueDependent() || 1714ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !NumParamsExpr->isIntegerConstantExpr(NumParams, S.Context)) { 171555d3aaf9a537888734762170823daf750ea9036dEli Friedman S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 171655d3aaf9a537888734762170823daf750ea9036dEli Friedman << "regparm" << NumParamsExpr->getSourceRange(); 171755d3aaf9a537888734762170823daf750ea9036dEli Friedman return; 171855d3aaf9a537888734762170823daf750ea9036dEli Friedman } 171955d3aaf9a537888734762170823daf750ea9036dEli Friedman 1720264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov if (S.Context.Target.getRegParmMax() == 0) { 1721264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov S.Diag(Attr.getLoc(), diag::err_attribute_regparm_wrong_platform) 172255d3aaf9a537888734762170823daf750ea9036dEli Friedman << NumParamsExpr->getSourceRange(); 172355d3aaf9a537888734762170823daf750ea9036dEli Friedman return; 172455d3aaf9a537888734762170823daf750ea9036dEli Friedman } 172555d3aaf9a537888734762170823daf750ea9036dEli Friedman 1726348f28ab6a574df6501ff8b76f9fc6753c155badAnton Korobeynikov if (NumParams.getLimitedValue(255) > S.Context.Target.getRegParmMax()) { 1727264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov S.Diag(Attr.getLoc(), diag::err_attribute_regparm_invalid_number) 1728264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov << S.Context.Target.getRegParmMax() << NumParamsExpr->getSourceRange(); 172955d3aaf9a537888734762170823daf750ea9036dEli Friedman return; 173055d3aaf9a537888734762170823daf750ea9036dEli Friedman } 173155d3aaf9a537888734762170823daf750ea9036dEli Friedman 173240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) RegparmAttr(NumParams.getZExtValue())); 1733ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian} 1734ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian 1735bbd37c62e34db3f5a95c899723484a76c71d7757Sean Huntstatic void HandleFinalAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1736bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // check the attribute arguments. 1737bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr.getNumArgs() != 0) { 1738bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1739bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return; 1740bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 1741bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 1742bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (!isa<CXXRecordDecl>(d) 1743bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt && (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual())) { 1744bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), 1745bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 1746bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt : diag::warn_attribute_wrong_decl_type) 1747bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt << Attr.getName() << 7 /*virtual method or class*/; 1748bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return; 1749bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 17507725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17517725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: Conform to C++0x redeclaration rules. 17527725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17537725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<FinalAttr>()) { 17547725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "final"; 17557725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17567725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 1757bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 1758bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt d->addAttr(::new (S.Context) FinalAttr()); 1759bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt} 1760bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 17610744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner//===----------------------------------------------------------------------===// 17627725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt// C++0x member checking attributes 17637725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt//===----------------------------------------------------------------------===// 17647725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17657725e67639fa2fe74f8775b7ed884a076ffdbffcSean Huntstatic void HandleBaseCheckAttr(Decl *d, const AttributeList &Attr, Sema &S) { 17667725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (Attr.getNumArgs() != 0) { 17677725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 17687725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17697725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17707725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17717725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (!isa<CXXRecordDecl>(d)) { 17727725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), 17737725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 17747725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt : diag::warn_attribute_wrong_decl_type) 17757725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt << Attr.getName() << 9 /*class*/; 17767725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17777725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17787725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17797725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<BaseCheckAttr>()) { 17807725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "base_check"; 17817725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17827725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17837725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17847725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt d->addAttr(::new (S.Context) BaseCheckAttr()); 17857725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt} 17867725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17877725e67639fa2fe74f8775b7ed884a076ffdbffcSean Huntstatic void HandleHidingAttr(Decl *d, const AttributeList &Attr, Sema &S) { 17887725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (Attr.getNumArgs() != 0) { 17897725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 17907725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17917725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17927725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17937725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (!isa<RecordDecl>(d->getDeclContext())) { 17947725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: It's not the type that's the problem 17957725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), 17967725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 17977725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt : diag::warn_attribute_wrong_decl_type) 17987725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt << Attr.getName() << 11 /*member*/; 17997725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 18007725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 18017725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18027725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: Conform to C++0x redeclaration rules. 18037725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18047725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<HidingAttr>()) { 18057725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "hiding"; 18067725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 18077725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 18087725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18097725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt d->addAttr(::new (S.Context) HidingAttr()); 18107725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt} 18117725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18127725e67639fa2fe74f8775b7ed884a076ffdbffcSean Huntstatic void HandleOverrideAttr(Decl *d, const AttributeList &Attr, Sema &S) { 18137725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (Attr.getNumArgs() != 0) { 18147725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 18157725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 18167725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 18177725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18187725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual()) { 18197725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: It's not the type that's the problem 18207725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), 18217725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 18227725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt : diag::warn_attribute_wrong_decl_type) 18237725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt << Attr.getName() << 10 /*virtual method*/; 18247725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 18257725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 18267725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18277725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: Conform to C++0x redeclaration rules. 18287725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18297725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<OverrideAttr>()) { 18307725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "override"; 18317725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 18327725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 18337725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18347725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt d->addAttr(::new (S.Context) OverrideAttr()); 18357725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt} 18367725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 18377725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt//===----------------------------------------------------------------------===// 1838b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek// Checker-specific attribute handlers. 1839b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek//===----------------------------------------------------------------------===// 1840b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 1841b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenekstatic void HandleNSReturnsRetainedAttr(Decl *d, const AttributeList &Attr, 1842b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek Sema &S) { 1843b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 18445dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek QualType RetTy; 1845bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 18465dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) 18475dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek RetTy = MD->getResultType(); 18485dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) 18495dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek RetTy = FD->getResultType(); 18505dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek else { 185121531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek SourceLocation L = Attr.getLoc(); 185221531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type) 185321531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek << SourceRange(L, L) << Attr.getName() << 3 /* function or method */; 1854b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 1855b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek } 1856bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 18576217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (!(S.Context.isObjCNSObjectType(RetTy) || RetTy->getAs<PointerType>() 1858183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall || RetTy->getAs<ObjCObjectPointerType>())) { 185921531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek SourceLocation L = Attr.getLoc(); 186021531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek S.Diag(d->getLocStart(), diag::warn_ns_attribute_wrong_return_type) 186121531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek << SourceRange(L, L) << Attr.getName(); 1862bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump return; 18635dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek } 1864bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1865b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek switch (Attr.getKind()) { 1866b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek default: 1867b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek assert(0 && "invalid ownership attribute"); 1868b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 186931c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_cf_returns_not_retained: 187031c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek d->addAttr(::new (S.Context) CFReturnsNotRetainedAttr()); 187131c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek return; 187231c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_ns_returns_not_retained: 187331c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek d->addAttr(::new (S.Context) NSReturnsNotRetainedAttr()); 187431c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek return; 1875b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_cf_returns_retained: 187640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) CFReturnsRetainedAttr()); 1877b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 1878b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_ns_returns_retained: 187940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) NSReturnsRetainedAttr()); 1880b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 1881b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek }; 1882b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek} 1883b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 1884f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davisstatic bool isKnownDeclSpecAttr(const AttributeList &Attr) { 1885f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis return Attr.getKind() == AttributeList::AT_dllimport || 1886f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis Attr.getKind() == AttributeList::AT_dllexport; 1887f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis} 1888f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis 1889b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek//===----------------------------------------------------------------------===// 18900744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner// Top Level Sema Entry Points 18910744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner//===----------------------------------------------------------------------===// 18920744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 1893a89d82c1c819d17042ec2db4283326a850229b21Sebastian Redl/// ProcessDeclAttribute - Apply the specific attribute to the specified decl if 1894803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// the attribute applies to decls. If the attribute is a type attribute, just 1895bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// silently ignore it if a GNU attribute. FIXME: Applying a C++0x attribute to 1896bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// the wrong thing is illegal (C++0x [dcl.attr.grammar]/4). 1897bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void ProcessDeclAttribute(Scope *scope, Decl *D, 1898bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump const AttributeList &Attr, Sema &S) { 1899e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara if (Attr.isInvalid()) 1900e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara return; 1901e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara 1902f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis if (Attr.isDeclspecAttribute() && !isKnownDeclSpecAttr(Attr)) 1903f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis // FIXME: Try to deal with other __declspec attributes! 1904290eeb0ec2b6b91f3621e05ef541deb257fbea73Eli Friedman return; 1905803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner switch (Attr.getKind()) { 190663e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek case AttributeList::AT_IBAction: HandleIBAction(D, Attr, S); break; 1907857e918a8a40deb128840308a318bf623d68295fTed Kremenek case AttributeList::AT_IBOutlet: HandleIBOutlet(D, Attr, S); break; 1908857e918a8a40deb128840308a318bf623d68295fTed Kremenek case AttributeList::AT_IBOutletCollection: 1909857e918a8a40deb128840308a318bf623d68295fTed Kremenek HandleIBOutletCollection(D, Attr, S); break; 1910803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_address_space: 1911ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian case AttributeList::AT_objc_gc: 19126e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson case AttributeList::AT_vector_size: 1913bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // Ignore these, these are type attributes, handled by 1914bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // ProcessTypeAttributes. 1915803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 19167725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; 19177725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; 1918bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump case AttributeList::AT_always_inline: 1919af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar HandleAlwaysInlineAttr (D, Attr, S); break; 1920b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek case AttributeList::AT_analyzer_noreturn: 1921bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump HandleAnalyzerNoReturnAttr (D, Attr, S); break; 19227725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; 19237725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_base_check: HandleBaseCheckAttr (D, Attr, S); break; 1924bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt case AttributeList::AT_carries_dependency: 19257725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt HandleDependencyAttr (D, Attr, S); break; 19267725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_constructor: HandleConstructorAttr (D, Attr, S); break; 19277725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_deprecated: HandleDeprecatedAttr (D, Attr, S); break; 19287725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_destructor: HandleDestructorAttr (D, Attr, S); break; 19293068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_ext_vector_type: 19309cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor HandleExtVectorTypeAttr(scope, D, Attr, S); 19313068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar break; 19327725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_final: HandleFinalAttr (D, Attr, S); break; 19337725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; 19347725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_format_arg: HandleFormatArgAttr (D, Attr, S); break; 19357725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_gnu_inline: HandleGNUInlineAttr (D, Attr, S); break; 19367725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_hiding: HandleHidingAttr (D, Attr, S); break; 19377725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; 19387725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_malloc: HandleMallocAttr (D, Attr, S); break; 19397725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; 19407725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; 19417725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; 19427725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_override: HandleOverrideAttr (D, Attr, S); break; 1943b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 1944b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek // Checker-specific. 194531c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_ns_returns_not_retained: 194631c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_cf_returns_not_retained: 1947b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_ns_returns_retained: 1948b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_cf_returns_retained: 1949b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek HandleNSReturnsRetainedAttr(D, Attr, S); break; 1950b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 19516f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman case AttributeList::AT_reqd_wg_size: 19526f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman HandleReqdWorkGroupSize(D, Attr, S); break; 19536f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman 19547725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; 19557725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_section: HandleSectionAttr (D, Attr, S); break; 19567725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_unavailable: HandleUnavailableAttr (D, Attr, S); break; 19577725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; 19587725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_used: HandleUsedAttr (D, Attr, S); break; 19597725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_visibility: HandleVisibilityAttr (D, Attr, S); break; 1960026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner case AttributeList::AT_warn_unused_result: HandleWarnUnusedResult(D,Attr,S); 1961026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner break; 19627725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; 196311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola case AttributeList::AT_weakref: HandleWeakRefAttr (D, Attr, S); break; 19647725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_weak_import: HandleWeakImportAttr (D, Attr, S); break; 1965803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_transparent_union: 1966803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner HandleTransparentUnionAttr(D, Attr, S); 1967803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 19680db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner case AttributeList::AT_objc_exception: 19690db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner HandleObjCExceptionAttr(D, Attr, S); 19700db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner break; 1971f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor case AttributeList::AT_overloadable:HandleOverloadableAttr(D, Attr, S); break; 19727725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nsobject: HandleObjCNSObject (D, Attr, S); break; 19737725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; 19747725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; 19757725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; 19767725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; 19777725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break; 19787725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nodebug: HandleNoDebugAttr (D, Attr, S); break; 19797725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_noinline: HandleNoInlineAttr (D, Attr, S); break; 19807725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_regparm: HandleRegparmAttr (D, Attr, S); break; 1981bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump case AttributeList::IgnoredAttribute: 19825e204486a7dd1e5f7e14e941a2c7e707a8ad1a3bChris Lattner case AttributeList::AT_no_instrument_function: // Interacts with -pg. 198305f8e471aae971c9867dbac148eba1275a570814Anders Carlsson // Just ignore 198405f8e471aae971c9867dbac148eba1275a570814Anders Carlsson break; 198504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall case AttributeList::AT_stdcall: 198604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall case AttributeList::AT_cdecl: 198704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall case AttributeList::AT_fastcall: 1988f813a2c03fcb05381b3252010435f557eb6b3cdeDouglas Gregor case AttributeList::AT_thiscall: 1989e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara HandleCallConvAttr(D, Attr, S); 199004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall break; 1991803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner default: 199282d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Ask target about the attribute. 199382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema(); 199482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S)) 199582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); 1996803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 1997803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner } 1998803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner} 1999803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 2000803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// ProcessDeclAttributeList - Apply all the decl attributes in the specified 2001803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// attribute list to the specified decl, ignoring any type attributes. 20029cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregorvoid Sema::ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AttrList) { 200311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola for (const AttributeList* l = AttrList; l; l = l->getNext()) { 200411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola ProcessDeclAttribute(S, D, *l, *this); 200511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 200611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 200711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // GCC accepts 200811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int a9 __attribute__((weakref)); 200911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // but that looks really pointless. We reject it. 201011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (D->hasAttr<WeakRefAttr>() && !D->hasAttr<AliasAttr>()) { 201111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Diag(AttrList->getLoc(), diag::err_attribute_weakref_without_alias) << 201211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola dyn_cast<NamedDecl>(D)->getNameAsString(); 201311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 2014803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner } 2015803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner} 2016803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 2017e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// DeclClonePragmaWeak - clone existing decl (maybe definition), 2018e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// #pragma weak needs a non-definition decl and source may not have one 20191eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpNamedDecl * Sema::DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II) { 20207b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynn assert(isa<FunctionDecl>(ND) || isa<VarDecl>(ND)); 2021e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn NamedDecl *NewD = 0; 2022e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) { 2023e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn NewD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(), 2024e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn FD->getLocation(), DeclarationName(II), 2025a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall FD->getType(), FD->getTypeSourceInfo()); 2026b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (FD->getQualifier()) { 2027b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall FunctionDecl *NewFD = cast<FunctionDecl>(NewD); 2028b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NewFD->setQualifierInfo(FD->getQualifier(), FD->getQualifierRange()); 2029b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall } 2030e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } else if (VarDecl *VD = dyn_cast<VarDecl>(ND)) { 2031e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn NewD = VarDecl::Create(VD->getASTContext(), VD->getDeclContext(), 2032e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn VD->getLocation(), II, 2033a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall VD->getType(), VD->getTypeSourceInfo(), 203416573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor VD->getStorageClass(), 203516573fa9705b546b7597c273b25b85d6321e2b33Douglas Gregor VD->getStorageClassAsWritten()); 2036b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (VD->getQualifier()) { 2037b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall VarDecl *NewVD = cast<VarDecl>(NewD); 2038b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NewVD->setQualifierInfo(VD->getQualifier(), VD->getQualifierRange()); 2039b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall } 2040e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2041e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn return NewD; 2042e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn} 2043e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn 2044e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// DeclApplyPragmaWeak - A declaration (maybe definition) needs #pragma weak 2045e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// applied to it, possibly with an alias. 20467b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynnvoid Sema::DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W) { 2047c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner if (W.getUsed()) return; // only do this once 2048c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner W.setUsed(true); 2049c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner if (W.getAlias()) { // clone decl, impersonate __attribute(weak,alias(...)) 2050c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner IdentifierInfo *NDId = ND->getIdentifier(); 2051c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner NamedDecl *NewD = DeclClonePragmaWeak(ND, W.getAlias()); 20523d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek NewD->addAttr(::new (Context) AliasAttr(Context, NDId->getName())); 2053c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner NewD->addAttr(::new (Context) WeakAttr()); 2054c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner WeakTopLevelDecl.push_back(NewD); 2055c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner // FIXME: "hideous" code from Sema::LazilyCreateBuiltin 2056c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner // to insert Decl at TU scope, sorry. 2057c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner DeclContext *SavedContext = CurContext; 2058c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner CurContext = Context.getTranslationUnitDecl(); 2059c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner PushOnScopeChains(NewD, S); 2060c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner CurContext = SavedContext; 2061c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner } else { // just add weak to existing 2062c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner ND->addAttr(::new (Context) WeakAttr()); 2063e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2064e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn} 2065e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn 20660744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in 20670744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// it, apply them to D. This is a bit tricky because PD can have attributes 20680744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// specified in many different places, and we need to find and apply them all. 20699cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregorvoid Sema::ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD) { 2070e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn // Handle #pragma weak 2071e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) { 2072e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (ND->hasLinkage()) { 2073e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn WeakInfo W = WeakUndeclaredIdentifiers.lookup(ND->getIdentifier()); 2074e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (W != WeakInfo()) { 20757b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynn // Identifier referenced by #pragma weak before it was declared 20767b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynn DeclApplyPragmaWeak(S, ND, W); 2077e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn WeakUndeclaredIdentifiers[ND->getIdentifier()] = W; 2078e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2079e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2080e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2081e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn 20820744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Apply decl attributes from the DeclSpec if present. 20830744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) 20849cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor ProcessDeclAttributeList(S, D, Attrs); 2085bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 20860744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Walk the declarator structure, applying decl attributes that were in a type 20870744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // position to the decl itself. This handles cases like: 20880744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // int *__attr__(x)** D; 20890744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // when X is a decl attribute. 20900744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) 20910744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) 20929cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor ProcessDeclAttributeList(S, D, Attrs); 2093bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 20940744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Finally, apply any attributes on the decl itself. 20950744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getAttributes()) 20969cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor ProcessDeclAttributeList(S, D, Attrs); 20970744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner} 209854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 209954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// PushParsingDeclaration - Enter a new "scope" of deprecation 210054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// warnings. 210154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// 210254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// The state token we use is the start index of this scope 210354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// on the warning stack. 210454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallAction::ParsingDeclStackState Sema::PushParsingDeclaration() { 210554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall ParsingDeclDepth++; 21062f514480c448708ec382a684cf5e035d3a827ec8John McCall return (ParsingDeclStackState) DelayedDiagnostics.size(); 210754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall} 210854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 210954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallvoid Sema::PopParsingDeclaration(ParsingDeclStackState S, DeclPtrTy Ctx) { 211054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall assert(ParsingDeclDepth > 0 && "empty ParsingDeclaration stack"); 211154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall ParsingDeclDepth--; 211254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 21132f514480c448708ec382a684cf5e035d3a827ec8John McCall if (DelayedDiagnostics.empty()) 211454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall return; 211554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 211654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall unsigned SavedIndex = (unsigned) S; 21172f514480c448708ec382a684cf5e035d3a827ec8John McCall assert(SavedIndex <= DelayedDiagnostics.size() && 211854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall "saved index is out of bounds"); 211954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 212058e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall unsigned E = DelayedDiagnostics.size(); 212158e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall 21222f514480c448708ec382a684cf5e035d3a827ec8John McCall // We only want to actually emit delayed diagnostics when we 21232f514480c448708ec382a684cf5e035d3a827ec8John McCall // successfully parsed a decl. 21242f514480c448708ec382a684cf5e035d3a827ec8John McCall Decl *D = Ctx ? Ctx.getAs<Decl>() : 0; 21252f514480c448708ec382a684cf5e035d3a827ec8John McCall if (D) { 21262f514480c448708ec382a684cf5e035d3a827ec8John McCall // We really do want to start with 0 here. We get one push for a 21272f514480c448708ec382a684cf5e035d3a827ec8John McCall // decl spec and another for each declarator; in a decl group like: 21282f514480c448708ec382a684cf5e035d3a827ec8John McCall // deprecated_typedef foo, *bar, baz(); 21292f514480c448708ec382a684cf5e035d3a827ec8John McCall // only the declarator pops will be passed decls. This is correct; 21302f514480c448708ec382a684cf5e035d3a827ec8John McCall // we really do need to consider delayed diagnostics from the decl spec 21312f514480c448708ec382a684cf5e035d3a827ec8John McCall // for each of the different declarations. 213258e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall for (unsigned I = 0; I != E; ++I) { 21332f514480c448708ec382a684cf5e035d3a827ec8John McCall if (DelayedDiagnostics[I].Triggered) 21342f514480c448708ec382a684cf5e035d3a827ec8John McCall continue; 21352f514480c448708ec382a684cf5e035d3a827ec8John McCall 21362f514480c448708ec382a684cf5e035d3a827ec8John McCall switch (DelayedDiagnostics[I].Kind) { 21372f514480c448708ec382a684cf5e035d3a827ec8John McCall case DelayedDiagnostic::Deprecation: 21382f514480c448708ec382a684cf5e035d3a827ec8John McCall HandleDelayedDeprecationCheck(DelayedDiagnostics[I], D); 21392f514480c448708ec382a684cf5e035d3a827ec8John McCall break; 21402f514480c448708ec382a684cf5e035d3a827ec8John McCall 21412f514480c448708ec382a684cf5e035d3a827ec8John McCall case DelayedDiagnostic::Access: 21422f514480c448708ec382a684cf5e035d3a827ec8John McCall HandleDelayedAccessCheck(DelayedDiagnostics[I], D); 21432f514480c448708ec382a684cf5e035d3a827ec8John McCall break; 214454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 214554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 214654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 214754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 214858e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall // Destroy all the delayed diagnostics we're about to pop off. 214958e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall for (unsigned I = SavedIndex; I != E; ++I) 215058e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall DelayedDiagnostics[I].destroy(); 215158e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall 21522f514480c448708ec382a684cf5e035d3a827ec8John McCall DelayedDiagnostics.set_size(SavedIndex); 21532f514480c448708ec382a684cf5e035d3a827ec8John McCall} 21542f514480c448708ec382a684cf5e035d3a827ec8John McCall 21552f514480c448708ec382a684cf5e035d3a827ec8John McCallstatic bool isDeclDeprecated(Decl *D) { 21562f514480c448708ec382a684cf5e035d3a827ec8John McCall do { 21572f514480c448708ec382a684cf5e035d3a827ec8John McCall if (D->hasAttr<DeprecatedAttr>()) 21582f514480c448708ec382a684cf5e035d3a827ec8John McCall return true; 21592f514480c448708ec382a684cf5e035d3a827ec8John McCall } while ((D = cast_or_null<Decl>(D->getDeclContext()))); 21602f514480c448708ec382a684cf5e035d3a827ec8John McCall return false; 21612f514480c448708ec382a684cf5e035d3a827ec8John McCall} 21622f514480c448708ec382a684cf5e035d3a827ec8John McCall 21632f514480c448708ec382a684cf5e035d3a827ec8John McCallvoid Sema::HandleDelayedDeprecationCheck(Sema::DelayedDiagnostic &DD, 21642f514480c448708ec382a684cf5e035d3a827ec8John McCall Decl *Ctx) { 21652f514480c448708ec382a684cf5e035d3a827ec8John McCall if (isDeclDeprecated(Ctx)) 21662f514480c448708ec382a684cf5e035d3a827ec8John McCall return; 21672f514480c448708ec382a684cf5e035d3a827ec8John McCall 21682f514480c448708ec382a684cf5e035d3a827ec8John McCall DD.Triggered = true; 21692f514480c448708ec382a684cf5e035d3a827ec8John McCall Diag(DD.Loc, diag::warn_deprecated) 21702f514480c448708ec382a684cf5e035d3a827ec8John McCall << DD.DeprecationData.Decl->getDeclName(); 217154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall} 217254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 217354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallvoid Sema::EmitDeprecationWarning(NamedDecl *D, SourceLocation Loc) { 217454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Delay if we're currently parsing a declaration. 217554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall if (ParsingDeclDepth) { 21762f514480c448708ec382a684cf5e035d3a827ec8John McCall DelayedDiagnostics.push_back(DelayedDiagnostic::makeDeprecation(Loc, D)); 217754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall return; 217854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 217954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 218054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Otherwise, don't warn if our current context is deprecated. 218154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall if (isDeclDeprecated(cast<Decl>(CurContext))) 218254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall return; 218354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 218454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall Diag(Loc, diag::warn_deprecated) << D->getDeclName(); 218554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall} 2186