SemaDeclAttr.cpp revision aec586056d8670c99ba7c4833be13e4eb123cddb
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)) 121d66f22d9f8423579322a6dd16587ed52b0a58834Fariborz Jahanian 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 132183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAs<ObjCInterfaceType>(); 1336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!ClsT) 1346b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return false; 135bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner IdentifierInfo* ClsName = ClsT->getDecl()->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(); 153085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (RD->getTagKind() != TagDecl::TK_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 262eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenekstatic void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { 263bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // GCC ignores the nonnull attribute on K&R style function prototypes, so we 264bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // ignore it as well 265d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { 266fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 2675dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 268eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 269eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 270bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 271d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar unsigned NumArgs = getFunctionOrMethodNumArgs(d); 272eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 273eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // The nonnull attribute only applies to pointers. 274eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek llvm::SmallVector<unsigned, 10> NonNullArgs; 275bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 276eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek for (AttributeList::arg_iterator I=Attr.arg_begin(), 277eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek E=Attr.arg_end(); I!=E; ++I) { 278bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 279bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 280eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // The argument must be an integer constant expression. 281f5e883474796afd26e52a010cd9bf90374fa1915Ted Kremenek Expr *Ex = static_cast<Expr *>(*I); 282eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek llvm::APSInt ArgNum(32); 283eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { 284fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 285fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << Ex->getSourceRange(); 286eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 287eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 288bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 289eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek unsigned x = (unsigned) ArgNum.getZExtValue(); 290bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 291eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek if (x < 1 || x > NumArgs) { 292fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 29330bc96544346bea42921cf6837e66cef80d664b4Chris Lattner << "nonnull" << I.getArgNum() << Ex->getSourceRange(); 294eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek return; 295eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 296bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 297465172f304248a9aab6f2c398a836ce4e25efbbfTed Kremenek --x; 298eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 299eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // Is the function argument a pointer type? 300bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump QualType T = getFunctionOrMethodArgType(d, x); 301dbfe99ef39163fd3574332673ee175c2bb6ef3caTed Kremenek if (!T->isAnyPointerType() && !T->isBlockPointerType()) { 302eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek // FIXME: Should also highlight argument in decl. 303fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) 304fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "nonnull" << Ex->getSourceRange(); 3057fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek continue; 306eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 307bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 308eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek NonNullArgs.push_back(x); 309eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 310bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 311bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // If no arguments were specified to __attribute__((nonnull)) then all pointer 312bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // arguments have a nonnull attribute. 3137fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek if (NonNullArgs.empty()) { 31446bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { 31546bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek QualType T = getFunctionOrMethodArgType(d, I); 316dbfe99ef39163fd3574332673ee175c2bb6ef3caTed Kremenek if (T->isAnyPointerType() || T->isBlockPointerType()) 317d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar NonNullArgs.push_back(I); 31846bbacac37141ed9d01d5b6473e8211554b02710Ted Kremenek } 319bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 3207fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek if (NonNullArgs.empty()) { 3217fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); 3227fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek return; 3237fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek } 324eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek } 3257fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek 3267fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek unsigned* start = &NonNullArgs[0]; 3277fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek unsigned size = NonNullArgs.size(); 3287fb43c17eb2b4102f40a80a355629aacd70589adTed Kremenek std::sort(start, start + size); 3295961611172f1c210fbbaa55b3c692e13b1fc7be4Ted Kremenek d->addAttr(::new (S.Context) NonNullAttr(S.Context, start, size)); 330eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek} 331eb2b2a3f1898f146c6e153a64ec58ec5e1750bd2Ted Kremenek 33211e8ce7380856abee188b237c2600272df2ed09dRafael Espindolastatic bool isStaticVarOrStaticFunciton(Decl *D) { 33311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (VarDecl *VD = dyn_cast<VarDecl>(D)) 33411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return VD->getStorageClass() == VarDecl::Static; 33511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) 33611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return FD->getStorageClass() == FunctionDecl::Static; 33711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return false; 33811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola} 33911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 34011e8ce7380856abee188b237c2600272df2ed09dRafael Espindolastatic void HandleWeakRefAttr(Decl *d, const AttributeList &Attr, Sema &S) { 34111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // Check the attribute arguments. 34211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (Attr.getNumArgs() > 1) { 34311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 34411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 34511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 34611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 34711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // gcc rejects 34811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // class c { 34911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int a __attribute__((weakref ("v2"))); 35011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int b() __attribute__((weakref ("f3"))); 35111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // }; 35211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // and ignores the attributes of 35311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // void f(void) { 35411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int a __attribute__((weakref ("v2"))); 35511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // } 35611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // we reject them 35711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (const DeclContext *Ctx = d->getDeclContext()) { 35811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Ctx = Ctx->getLookupContext(); 35911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (!isa<TranslationUnitDecl>(Ctx) && !isa<NamespaceDecl>(Ctx) ) { 36011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_weakref_not_global_context) << 36111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola dyn_cast<NamedDecl>(d)->getNameAsString(); 36211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 36311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 36411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 36511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 36611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // The GCC manual says 36711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 36811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // At present, a declaration to which `weakref' is attached can only 36911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // be `static'. 37011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 37111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // It also says 37211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 37311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // Without a TARGET, 37411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // given as an argument to `weakref' or to `alias', `weakref' is 37511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // equivalent to `weak'. 37611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // 37711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // gcc 4.4.1 will accept 37811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // int a7 __attribute__((weakref)); 37911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // as 38011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // int a7 __attribute__((weak)); 38111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // This looks like a bug in gcc. We reject that for now. We should revisit 38211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // it if this behaviour is actually used. 38311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 38411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (!isStaticVarOrStaticFunciton(d)) { 38511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_weakref_not_static) << 38611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola dyn_cast<NamedDecl>(d)->getNameAsString(); 38711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 38811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 38911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 39011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // GCC rejects 39111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static ((alias ("y"), weakref)). 39211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // Should we? How to check that weakref is before or after alias? 39311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 39411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (Attr.getNumArgs() == 1) { 39511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 39611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Arg = Arg->IgnoreParenCasts(); 39711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 39811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 39911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (Str == 0 || Str->isWide()) { 40011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 40111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola << "weakref" << 1; 40211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 40311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 40411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // GCC will accept anything as the argument of weakref. Should we 40511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // check for an existing decl? 40611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola d->addAttr(::new (S.Context) AliasAttr(S.Context, Str->getString())); 40711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 40811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 40911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola d->addAttr(::new (S.Context) WeakRefAttr()); 41011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola} 41111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 412803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { 4136b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 414545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 4153c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 4166b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 4176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 418bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 419545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 4206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Arg = Arg->IgnoreParenCasts(); 4216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 422bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 4236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Str == 0 || Str->isWide()) { 424fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 4253c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "alias" << 1; 4266b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 4276b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 428bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 4296b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: check if target symbol exists in current file 430bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 4313d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek d->addAttr(::new (S.Context) AliasAttr(S.Context, Str->getString())); 4326b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 4336b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 434bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, 435af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar Sema &S) { 436af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar // check the attribute arguments. 437af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar if (Attr.getNumArgs() != 0) { 4383c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 439af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar return; 440af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar } 4415bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson 442c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (!isa<FunctionDecl>(d)) { 4435bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 4445dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 4455bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson return; 4465bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson } 447bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 44840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AlwaysInlineAttr()); 449af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar} 450af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar 45176168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynnstatic void HandleMallocAttr(Decl *d, const AttributeList &Attr, Sema &S) { 45276168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn // check the attribute arguments. 45376168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn if (Attr.getNumArgs() != 0) { 45476168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 45576168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn return; 45676168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn } 4571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4582cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { 4591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType RetTy = FD->getResultType(); 4602cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek if (RetTy->isAnyPointerType() || RetTy->isBlockPointerType()) { 4612cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek d->addAttr(::new (S.Context) MallocAttr()); 4622cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek return; 4632cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek } 464fd6ad3cf9c8fc6904bd5f33212207aa69743fd45Ryan Flynn } 465fd6ad3cf9c8fc6904bd5f33212207aa69743fd45Ryan Flynn 4662cff7d16fe58e6d6447ec9cad2af083beb20d6b5Ted Kremenek S.Diag(Attr.getLoc(), diag::warn_attribute_malloc_pointer_only); 46776168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn} 46876168e289ca4b307259e3bc9b3353f03b05bb6b9Ryan Flynn 469b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenekstatic bool HandleCommonNoReturnAttr(Decl *d, const AttributeList &Attr, 4705dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek Sema &S) { 4716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 472545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 4733c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 474b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek return false; 4756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 476d3f2c10f881311831a84114179342ff4db55e0c3Daniel Dunbar 47719c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump if (!isFunctionOrMethod(d) && !isa<BlockDecl>(d)) { 47819c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump ValueDecl *VD = dyn_cast<ValueDecl>(d); 4793ee77640c722a70ab7e0181f36dc2af21cab3d23Mike Stump if (VD == 0 || (!VD->getType()->isBlockPointerType() 4803ee77640c722a70ab7e0181f36dc2af21cab3d23Mike Stump && !VD->getType()->isFunctionPointerType())) { 481bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), 482bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 483bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt : diag::warn_attribute_wrong_decl_type) 4845dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 48519c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump return false; 48619c30c00e5e01e4608a43c7deb504f343f09e46dMike Stump } 4876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 488bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 489b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek return true; 490b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek} 491b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek 492b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenekstatic void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { 49379f5e512d5f930d7ed30c76d3354accd832edd8aTed Kremenek // NOTE: We don't add the attribute to a FunctionDecl because the noreturn 49479f5e512d5f930d7ed30c76d3354accd832edd8aTed Kremenek // trait will be part of the function's type. 49579f5e512d5f930d7ed30c76d3354accd832edd8aTed Kremenek 49604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Don't apply as a decl attribute to ValueDecl. 49704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // FIXME: probably ought to diagnose this. 49804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall if (isa<ValueDecl>(d)) 49904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall return; 50004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 501bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump if (HandleCommonNoReturnAttr(d, Attr, S)) 50240b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) NoReturnAttr()); 503b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek} 504b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek 505b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenekstatic void HandleAnalyzerNoReturnAttr(Decl *d, const AttributeList &Attr, 506b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek Sema &S) { 507bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump if (HandleCommonNoReturnAttr(d, Attr, S)) 50840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AnalyzerNoReturnAttr()); 5096b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 5106b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 511bbd37c62e34db3f5a95c899723484a76c71d7757Sean Huntstatic void HandleDependencyAttr(Decl *d, const AttributeList &Attr, Sema &S) { 512bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (!isFunctionOrMethod(d) && !isa<ParmVarDecl>(d)) { 513bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type) 51404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << Attr.getName() << 8 /*function, method, or parameter*/; 515bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return; 516bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 517bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // FIXME: Actually store the attribute on the declaration 518bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt} 519bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 52073798892751e378cbcdef43579c1d41685091fd0Ted Kremenekstatic void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 52173798892751e378cbcdef43579c1d41685091fd0Ted Kremenek // check the attribute arguments. 52273798892751e378cbcdef43579c1d41685091fd0Ted Kremenek if (Attr.getNumArgs() != 0) { 5233c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 52473798892751e378cbcdef43579c1d41685091fd0Ted Kremenek return; 52573798892751e378cbcdef43579c1d41685091fd0Ted Kremenek } 526bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 527aec586056d8670c99ba7c4833be13e4eb123cddbJohn McCall if (!isa<VarDecl>(d) && !isa<ObjCIvarDecl>(d) && !isFunctionOrMethod(d) && 528aec586056d8670c99ba7c4833be13e4eb123cddbJohn McCall !isa<TypeDecl>(d)) { 529fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 5305dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 53173798892751e378cbcdef43579c1d41685091fd0Ted Kremenek return; 53273798892751e378cbcdef43579c1d41685091fd0Ted Kremenek } 533bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 53440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) UnusedAttr()); 53573798892751e378cbcdef43579c1d41685091fd0Ted Kremenek} 53673798892751e378cbcdef43579c1d41685091fd0Ted Kremenek 537b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbarstatic void HandleUsedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 538b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar // check the attribute arguments. 539b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar if (Attr.getNumArgs() != 0) { 540b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 541b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar return; 542b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } 543bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 544b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar if (const VarDecl *VD = dyn_cast<VarDecl>(d)) { 545186204bfcf9c53d48143ec300d4c3d036fed4140Daniel Dunbar if (VD->hasLocalStorage() || VD->hasExternalStorage()) { 546b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "used"; 547b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar return; 548b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } 549b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } else if (!isFunctionOrMethod(d)) { 550b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 5515dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 552b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar return; 553b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar } 554bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 55540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) UsedAttr()); 556b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar} 557b805dad4aa386aeae0f72512895bd238678d37a5Daniel Dunbar 5583068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbarstatic void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { 5593068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar // check the attribute arguments. 5603068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { 561fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 562fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0 or 1"; 5633068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 564bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 5653068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 5663068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar int priority = 65535; // FIXME: Do not hardcode such constants. 5673068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() > 0) { 5683068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar Expr *E = static_cast<Expr *>(Attr.getArg(0)); 5693068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar llvm::APSInt Idx(32); 5703068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (!E->isIntegerConstantExpr(Idx, S.Context)) { 571fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 5723c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "constructor" << 1 << E->getSourceRange(); 5733068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 5743068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 5753068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar priority = Idx.getZExtValue(); 5763068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 577bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 578c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (!isa<FunctionDecl>(d)) { 579fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 5805dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 5813068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 5823068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 5833068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 58440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) ConstructorAttr(priority)); 5853068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar} 5863068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 5873068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbarstatic void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { 5883068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar // check the attribute arguments. 5893068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { 590fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 591fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0 or 1"; 5923068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 593bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 5943068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 5953068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar int priority = 65535; // FIXME: Do not hardcode such constants. 5963068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (Attr.getNumArgs() > 0) { 5973068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar Expr *E = static_cast<Expr *>(Attr.getArg(0)); 5983068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar llvm::APSInt Idx(32); 5993068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar if (!E->isIntegerConstantExpr(Idx, S.Context)) { 600fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 6013c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "destructor" << 1 << E->getSourceRange(); 6023068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 6033068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 6043068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar priority = Idx.getZExtValue(); 6053068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 606bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 6076782fc6925a85c3772253e272745589a0c799c15Anders Carlsson if (!isa<FunctionDecl>(d)) { 608fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 6095dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 6103068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar return; 6113068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar } 6123068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 61340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) DestructorAttr(priority)); 6143068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar} 6153068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar 616803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6176b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 618545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 6193c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 622bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 62340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) DeprecatedAttr()); 6246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6256b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 626bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanianstatic void HandleUnavailableAttr(Decl *d, const AttributeList &Attr, Sema &S) { 627bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian // check the attribute arguments. 628bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian if (Attr.getNumArgs() != 0) { 629bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 630bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian return; 631bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian } 632bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 63340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) UnavailableAttr()); 634bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian} 635bc1c877fe28fb6a825f0b226a0a2da99e713ea03Fariborz Jahanian 636803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { 6376b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 638545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 6393c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 6406b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6416b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 642bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 643545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); 6446b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Arg = Arg->IgnoreParenCasts(); 6456b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner StringLiteral *Str = dyn_cast<StringLiteral>(Arg); 646bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 6476b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Str == 0 || Str->isWide()) { 648fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 6493c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "visibility" << 1; 6506b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6516b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 652bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 653c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer llvm::StringRef TypeStr = Str->getString(); 6546b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner VisibilityAttr::VisibilityTypes type; 655bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 656c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer if (TypeStr == "default") 6576b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::DefaultVisibility; 658c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer else if (TypeStr == "hidden") 6596b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::HiddenVisibility; 660c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer else if (TypeStr == "internal") 6616b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::HiddenVisibility; // FIXME 662c96f49417b2039d6227b042cd2d975f0869df79dBenjamin Kramer else if (TypeStr == "protected") 6636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner type = VisibilityAttr::ProtectedVisibility; 6646b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner else { 66508631c5fa053867146b5ee8be658c229f6bf127cChris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr; 6666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 6676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 668bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 66940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) VisibilityAttr(type)); 6706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 6716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 6720db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattnerstatic void HandleObjCExceptionAttr(Decl *D, const AttributeList &Attr, 6730db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner Sema &S) { 6740db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner if (Attr.getNumArgs() != 0) { 6750db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 6760db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner return; 6770db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner } 678bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 6790db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner ObjCInterfaceDecl *OCI = dyn_cast<ObjCInterfaceDecl>(D); 6800db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner if (OCI == 0) { 6810db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_requires_objc_interface); 6820db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner return; 6830db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner } 684bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 68540b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) ObjCExceptionAttr()); 6860db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner} 6870db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner 6880db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattnerstatic void HandleObjCNSObject(Decl *D, const AttributeList &Attr, Sema &S) { 689fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian if (Attr.getNumArgs() != 0) { 690fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 691fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian return; 692fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian } 6930db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { 694fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian QualType T = TD->getUnderlyingType(); 695fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian if (!T->isPointerType() || 6966217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !T->getAs<PointerType>()->getPointeeType()->isRecordType()) { 697fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian S.Diag(TD->getLocation(), diag::err_nsobject_attribute); 698fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian return; 699fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian } 700fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian } 70140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) ObjCNSObjectAttr()); 702fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian} 703fa23c1d9adc99c662c1c0e192817185809d95614Fariborz Jahanian 704bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void 705f9201e0ff1779567150b70856753d9f2c6a91467Douglas GregorHandleOverloadableAttr(Decl *D, const AttributeList &Attr, Sema &S) { 706f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor if (Attr.getNumArgs() != 0) { 707f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 708f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor return; 709f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor } 710f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor 711f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor if (!isa<FunctionDecl>(D)) { 712f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor S.Diag(Attr.getLoc(), diag::err_attribute_overloadable_not_function); 713f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor return; 714f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor } 715f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor 71640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) OverloadableAttr()); 717f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor} 718f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor 7199eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroffstatic void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { 720bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump if (!Attr.getParameterName()) { 721fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 7223c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "blocks" << 1; 7239eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 7249eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 725bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 7269eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff if (Attr.getNumArgs() != 0) { 7273c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 7289eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 7299eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 730bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 7319eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff BlocksAttr::BlocksAttrTypes type; 73292e62b02226410bcad8584541b8f1ff4d35ebab9Chris Lattner if (Attr.getParameterName()->isStr("byref")) 7339eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff type = BlocksAttr::ByRef; 7349eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff else { 735fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 7363c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "blocks" << Attr.getParameterName(); 7379eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff return; 7389eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff } 739bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 74040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) BlocksAttr(type)); 7419eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff} 7429eae5761c0691c0f11d7a823b8ee54f05786cbbeSteve Naroff 743770918281c5bdc7b5b3942285c407e3d62270053Anders Carlssonstatic void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { 744770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // check the attribute arguments. 745770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 2) { 746fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 747fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "0, 1 or 2"; 748770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 749bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 750bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 751770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson int sentinel = 0; 752770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 0) { 753770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson Expr *E = static_cast<Expr *>(Attr.getArg(0)); 754770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson llvm::APSInt Idx(32); 755770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!E->isIntegerConstantExpr(Idx, S.Context)) { 756fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 7573c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "sentinel" << 1 << E->getSourceRange(); 758770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 759770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 760770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson sentinel = Idx.getZExtValue(); 761bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 762770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (sentinel < 0) { 763fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) 764fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << E->getSourceRange(); 765770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 766770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 767770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 768770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 769770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson int nullPos = 0; 770770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (Attr.getNumArgs() > 1) { 771770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson Expr *E = static_cast<Expr *>(Attr.getArg(1)); 772770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson llvm::APSInt Idx(32); 773770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!E->isIntegerConstantExpr(Idx, S.Context)) { 774fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 7753c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "sentinel" << 2 << E->getSourceRange(); 776770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 777770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 778770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson nullPos = Idx.getZExtValue(); 779bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 780770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (nullPos > 1 || nullPos < 0) { 781770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // FIXME: This error message could be improved, it would be nice 782770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson // to say what the bounds actually are. 783fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) 784fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << E->getSourceRange(); 785770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 786770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 787770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 788770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 789770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { 790183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const FunctionType *FT = FD->getType()->getAs<FunctionType>(); 791897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner assert(FT && "FunctionDecl has non-function type?"); 792bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 793897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner if (isa<FunctionNoProtoType>(FT)) { 794897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_named_arguments); 795897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner return; 796897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner } 797bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 798897cd90fef4cd5139999585f3af31d85c2d07720Chris Lattner if (!cast<FunctionProtoType>(FT)->isVariadic()) { 7993bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; 800770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 801bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 802770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { 803770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson if (!MD->isVariadic()) { 8043bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; 805770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 8062f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } 8072f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } else if (isa<BlockDecl>(d)) { 808bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // Note! BlockDecl is typeless. Variadic diagnostics will be issued by the 809bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // caller. 8102f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian ; 8112f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } else if (const VarDecl *V = dyn_cast<VarDecl>(d)) { 8122f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian QualType Ty = V->getType(); 813daf0415583e33d5d279197c65e9227c1ed92474bFariborz Jahanian if (Ty->isBlockPointerType() || Ty->isFunctionPointerType()) { 814bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump const FunctionType *FT = Ty->isFunctionPointerType() ? getFunctionType(d) 815183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall : Ty->getAs<BlockPointerType>()->getPointeeType()->getAs<FunctionType>(); 8162f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian if (!cast<FunctionProtoType>(FT)->isVariadic()) { 8173bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian int m = Ty->isFunctionPointerType() ? 0 : 1; 8183bba33d6f58844d4924ab1e221dc2ff44c521624Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << m; 8192f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian return; 8202f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } 821ac5fc7c6bcb494b60fee7ce615ac931c5db6135eMike Stump } else { 8222f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 823ffb0081d0c0509eb4884143381cb3e5a5f6947b4Fariborz Jahanian << Attr.getName() << 6 /*function, method or block */; 8242f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian return; 8252f7c39246a968b921a6d95c7f8037fb3429e9501Fariborz Jahanian } 826770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } else { 827fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 828ffb0081d0c0509eb4884143381cb3e5a5f6947b4Fariborz Jahanian << Attr.getName() << 6 /*function, method or block */; 829770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson return; 830770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson } 83140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) SentinelAttr(sentinel, nullPos)); 832770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson} 833770918281c5bdc7b5b3942285c407e3d62270053Anders Carlsson 834026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattnerstatic void HandleWarnUnusedResult(Decl *D, const AttributeList &Attr, Sema &S) { 835026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner // check the attribute arguments. 836026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner if (Attr.getNumArgs() != 0) { 837026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 838026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner return; 839026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner } 840026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner 841f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (!isFunction(D) && !isa<ObjCMethodDecl>(D)) { 842026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 8435dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 844026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner return; 845026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner } 846bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 847f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (isFunction(D) && getFunctionType(D)->getResultType()->isVoidType()) { 848f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_void_function_method) 849f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian << Attr.getName() << 0; 850f857798fa77ac50c6d0a262d96ad6176187190e3Nuno Lopes return; 851f857798fa77ac50c6d0a262d96ad6176187190e3Nuno Lopes } 852f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) 853f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian if (MD->getResultType()->isVoidType()) { 854f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_void_function_method) 855f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian << Attr.getName() << 1; 856f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian return; 857f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian } 858f031774aa2638b4d3f487e7e44180c1f89b867efFariborz Jahanian 859d20254f2875d0004c57ee766f258dbcee29f4841Nuno Lopes D->addAttr(::new (S.Context) WarnUnusedResultAttr()); 860026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner} 861026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner 862026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattnerstatic void HandleWeakAttr(Decl *D, const AttributeList &Attr, Sema &S) { 8636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 864545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 8653c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 8666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 8676b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 8686e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 869f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian /* weak only applies to non-static declarations */ 87011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (isStaticVarOrStaticFunciton(D)) { 871f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_weak_static) << 872f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian dyn_cast<NamedDecl>(D)->getNameAsString(); 873f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian return; 874f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian } 875f23ecd91bf0205b776dfab2c5231e895019a7400Fariborz Jahanian 8766e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // TODO: could also be applied to methods? 8776e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) { 8786e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 8795dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 8806e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 8816e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } 882bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 88340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) WeakAttr()); 8846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 8856b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 8866e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbarstatic void HandleWeakImportAttr(Decl *D, const AttributeList &Attr, Sema &S) { 8876e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // check the attribute arguments. 8886e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (Attr.getNumArgs() != 0) { 8896e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 8906e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 891bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 8926e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 8936e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // weak_import only applies to variable & function declarations. 8946e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar bool isDef = false; 8956e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (VarDecl *VD = dyn_cast<VarDecl>(D)) { 8966e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar isDef = (!VD->hasExternalStorage() || VD->getInit()); 8976e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 8986fb0aee4f9dc261bbec72e1283ad8dc0557a6d96Argyrios Kyrtzidis isDef = FD->getBody(); 899d4edddde6d3966ad4a4f60d9af0f9dd36995495cFariborz Jahanian } else if (isa<ObjCPropertyDecl>(D) || isa<ObjCMethodDecl>(D)) { 900d4edddde6d3966ad4a4f60d9af0f9dd36995495cFariborz Jahanian // We ignore weak import on properties and methods 9011c90f4dc686ab872013544664c797604a309c563Mike Stump return; 9025f8f8571c52dbf12fdefb15d2fedbcccb212c15cFariborz Jahanian } else if (!(S.LangOpts.ObjCNonFragileABI && isa<ObjCInterfaceDecl>(D))) { 9036e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 9045dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 2 /*variable and function*/; 9056e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 9066e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } 9076e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 9086e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar // Merge should handle any subsequent violations. 9096e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar if (isDef) { 910bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), 9116e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar diag::warn_attribute_weak_import_invalid_on_definition) 9126e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar << "weak_import" << 2 /*variable and function*/; 9136e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar return; 9146e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar } 9156e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 91640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) WeakImportAttr()); 9176e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar} 9186e775dbafba2ab6634decc489eb3b4301b4b506bDaniel Dunbar 9196f3d838867538638b9bbf412028e8537ae12f3e5Nate Begemanstatic void HandleReqdWorkGroupSize(Decl *D, const AttributeList &Attr, 9206f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman Sema &S) { 9216f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman // Attribute has 3 arguments. 9226f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman if (Attr.getNumArgs() != 3) { 9236f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 9246f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman return; 9256f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman } 9266f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman 9276f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman unsigned WGSize[3]; 9286f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman for (unsigned i = 0; i < 3; ++i) { 9296f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman Expr *E = static_cast<Expr *>(Attr.getArg(i)); 9306f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman llvm::APSInt ArgNum(32); 9316f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman if (!E->isIntegerConstantExpr(ArgNum, S.Context)) { 9326f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 9336f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman << "reqd_work_group_size" << E->getSourceRange(); 9346f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman return; 9356f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman } 9366f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman WGSize[i] = (unsigned) ArgNum.getZExtValue(); 9376f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman } 93840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis D->addAttr(::new (S.Context) ReqdWorkGroupSizeAttr(WGSize[0], WGSize[1], 9396f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman WGSize[2])); 9406f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman} 9416f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman 942026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattnerstatic void HandleSectionAttr(Decl *D, const AttributeList &Attr, Sema &S) { 94317f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar // Attribute has no arguments. 94417f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (Attr.getNumArgs() != 1) { 94517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 94617f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar return; 94717f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar } 94817f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 94917f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar // Make sure that there is a string literal as the sections's single 95017f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar // argument. 951797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); 952797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); 95317f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar if (!SE) { 954797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) << "section"; 95517f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar return; 95617f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar } 9571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 958797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner // If the target wants to validate the section specifier, make it happen. 959bb377edda2656752016a0bc01fe4f9f8b6f80e19Benjamin Kramer std::string Error = S.Context.Target.isValidSectionSpecifier(SE->getString()); 960a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner if (!Error.empty()) { 961a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner S.Diag(SE->getLocStart(), diag::err_attribute_section_invalid_for_target) 962a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner << Error; 963797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner return; 964797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner } 9651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 966a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner // This attribute cannot be applied to local variables. 967a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner if (isa<VarDecl>(D) && cast<VarDecl>(D)->hasLocalStorage()) { 968a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner S.Diag(SE->getLocStart(), diag::err_attribute_section_local_variable); 969a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner return; 970a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner } 971a1e1dc77e995b746826b64752751dbf35f323767Chris Lattner 9723d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek D->addAttr(::new (S.Context) SectionAttr(S.Context, SE->getString())); 97317f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar} 97417f194f4393a67fd28ad822c06d32b8cb99bad3fDaniel Dunbar 9756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 976803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { 9776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 978545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 9793c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 9806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 9816b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 982bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 98340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) NoThrowAttr()); 9846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 9856b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 986232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlssonstatic void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { 987232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson // check the attribute arguments. 988232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (Attr.getNumArgs() != 0) { 9893c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 990232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson return; 991232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson } 992bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 99340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) ConstAttr()); 994232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson} 995232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 996232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlssonstatic void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { 997232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson // check the attribute arguments. 998232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson if (Attr.getNumArgs() != 0) { 9993c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1000232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson return; 1001232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson } 1002bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 100340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) PureAttr()); 1004232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson} 1005232eb7d33b96ad8f99de3b5ae840421b3a7c6cb7Anders Carlsson 1006f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlssonstatic void HandleCleanupAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1007bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump if (!Attr.getParameterName()) { 1008f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1009f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1010f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1011bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1012f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (Attr.getNumArgs() != 0) { 1013f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1014f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1015f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1016bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1017f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson VarDecl *VD = dyn_cast<VarDecl>(d); 1018bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1019f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (!VD || !VD->hasLocalStorage()) { 1020f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "cleanup"; 1021f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1022f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1023bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1024f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson // Look up the function 1025f36e02d4aff98bf2e52e342e0038d4172fbb5e64John McCall NamedDecl *CleanupDecl 1026f36e02d4aff98bf2e52e342e0038d4172fbb5e64John McCall = S.LookupSingleName(S.TUScope, Attr.getParameterName(), 1027f36e02d4aff98bf2e52e342e0038d4172fbb5e64John McCall Sema::LookupOrdinaryName); 1028f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (!CleanupDecl) { 102989941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_found) << 1030f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson Attr.getParameterName(); 1031f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1032f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1033bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1034f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson FunctionDecl *FD = dyn_cast<FunctionDecl>(CleanupDecl); 1035f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (!FD) { 103689941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_function) << 1037f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson Attr.getParameterName(); 1038f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1039f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1040f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson 1041f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson if (FD->getNumParams() != 1) { 104289941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_func_must_take_one_arg) << 1043f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson Attr.getParameterName(); 1044f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson return; 1045f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson } 1046bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 104789941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson // We're currently more strict than GCC about what function types we accept. 104889941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson // If this ever proves to be a problem it should be easy to fix. 104989941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson QualType Ty = S.Context.getPointerType(VD->getType()); 105089941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson QualType ParamTy = FD->getParamDecl(0)->getType(); 1051d5e3e8ec50d6ea481b3bc841dcbe853175d05122Eli Friedman if (S.CheckAssignmentConstraints(ParamTy, Ty) != Sema::Compatible) { 1052bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), 105389941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson diag::err_attribute_cleanup_func_arg_incompatible_type) << 105489941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson Attr.getParameterName() << ParamTy << Ty; 105589941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson return; 105689941c1c68d8e4eec3c8ea8ee68e34d9e3c7b083Anders Carlsson } 1057bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 105840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) CleanupAttr(FD)); 1059f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson} 1060f6e35d0b9f1e9f1b4c5d3ef924415fa5e7c89849Anders Carlsson 1061bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// Handle __attribute__((format_arg((idx)))) attribute based on 1062bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html 1063bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void HandleFormatArgAttr(Decl *d, const AttributeList &Attr, Sema &S) { 10645b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (Attr.getNumArgs() != 1) { 10655b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 10665b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 10675b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 10685b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { 10695b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 10705b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << Attr.getName() << 0 /*function*/; 10715b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 10725b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 1073bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // FIXME: in C++ the implicit 'this' function parameter also counts. this is 1074bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // needed in order to be compatible with GCC the index must start with 1. 10755b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian unsigned NumArgs = getFunctionOrMethodNumArgs(d); 10765b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian unsigned FirstIdx = 1; 10775b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // checks for the 2nd argument 10785b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); 10795b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian llvm::APSInt Idx(32); 10805b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { 10815b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 10825b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << "format" << 2 << IdxExpr->getSourceRange(); 10835b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 10845b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 1085bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 10865b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { 10875b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 10885b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << "format" << 2 << IdxExpr->getSourceRange(); 10895b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 10905b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian } 1091bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 10925b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian unsigned ArgIdx = Idx.getZExtValue() - 1; 1093bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 10945b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // make sure the format string is really a string 10955b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); 1096bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 10975b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian bool not_nsstring_type = !isNSStringType(Ty, S.Context); 10985b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (not_nsstring_type && 10995b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian !isCFStringType(Ty, S.Context) && 11005b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian (!Ty->isPointerType() || 11016217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { 11025b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // FIXME: Should highlight the actual expression that has the wrong type. 11035b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1104bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump << (not_nsstring_type ? "a string type" : "an NSString") 11055b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << IdxExpr->getSourceRange(); 11065b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 1107bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 11085b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian Ty = getFunctionOrMethodResultType(d); 11095b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian if (!isNSStringType(Ty, S.Context) && 11105b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian !isCFStringType(Ty, S.Context) && 11115b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian (!Ty->isPointerType() || 11126217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { 11135b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian // FIXME: Should highlight the actual expression that has the wrong type. 11145b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian S.Diag(Attr.getLoc(), diag::err_format_attribute_result_not) 1115bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump << (not_nsstring_type ? "string type" : "NSString") 11165b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian << IdxExpr->getSourceRange(); 11175b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian return; 1118bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 1119bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 112040b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) FormatArgAttr(Idx.getZExtValue())); 11215b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian} 11225b160927672440076aa53c31d84149f70fd8d40eFariborz Jahanian 11232b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbarenum FormatAttrKind { 11242b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar CFStringFormat, 11252b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar NSStringFormat, 11262b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar StrftimeFormat, 11272b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar SupportedFormat, 11283c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner IgnoredFormat, 11292b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar InvalidFormat 11302b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar}; 11312b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 11322b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar/// getFormatAttrKind - Map from format attribute names to supported format 11332b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar/// types. 11342b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbarstatic FormatAttrKind getFormatAttrKind(llvm::StringRef Format) { 11352b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar // Check for formats that get handled specially. 11362b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "NSString") 11372b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return NSStringFormat; 11382b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "CFString") 11392b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return CFStringFormat; 11402b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "strftime") 11412b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return StrftimeFormat; 11422b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 11432b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar // Otherwise, check for supported formats. 11442b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format == "scanf" || Format == "printf" || Format == "printf0" || 11452b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format == "strfmon" || Format == "cmn_err" || Format == "strftime" || 11462b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format == "NSString" || Format == "CFString" || Format == "vcmn_err" || 11472b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format == "zcmn_err") 11482b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return SupportedFormat; 11492b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 1150bc52595e01323ca22d65c68aafd53a1acb8c1fb6Duncan Sands if (Format == "gcc_diag" || Format == "gcc_cdiag" || 1151bc52595e01323ca22d65c68aafd53a1acb8c1fb6Duncan Sands Format == "gcc_cxxdiag" || Format == "gcc_tdiag") 11523c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner return IgnoredFormat; 11533c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner 11542b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar return InvalidFormat; 11552b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar} 11562b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 1157bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// Handle __attribute__((format(type,idx,firstarg))) attributes based on 1158bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html 1159803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { 11606b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1161545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (!Attr.getParameterName()) { 1162fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) 11633c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 1; 11646b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 11656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 11666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1167545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 2) { 11683c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; 11696b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 11706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 11716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1172620d89ca4eb5dcb6be13a42aafa4849eaa9b834bFariborz Jahanian if (!isFunctionOrMethodOrBlock(d) || !hasFunctionProto(d)) { 1173fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 11745dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 11756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 11766b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 11776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 11783568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar unsigned NumArgs = getFunctionOrMethodNumArgs(d); 11796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned FirstIdx = 1; 11806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 118101eb9b9683535d8a65c704ad2c545903409e2d36Daniel Dunbar llvm::StringRef Format = Attr.getParameterName()->getName(); 11826b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 11836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Normalize the argument, __foo__ becomes foo. 11842b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Format.startswith("__") && Format.endswith("__")) 11852b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar Format = Format.substr(2, Format.size() - 4); 11862b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar 11872b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar // Check for supported formats. 11882b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar FormatAttrKind Kind = getFormatAttrKind(Format); 11893c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner 11903c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner if (Kind == IgnoredFormat) 11913c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner return; 11923c989027f68e2d9dfd57c018ccc550bd9fb79920Chris Lattner 11932b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Kind == InvalidFormat) { 1194fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) 119501eb9b9683535d8a65c704ad2c545903409e2d36Daniel Dunbar << "format" << Attr.getParameterName()->getName(); 11966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 11976b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 11986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 11996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // checks for the 2nd argument 1200545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); 1201803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner llvm::APSInt Idx(32); 1202803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { 1203fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 12043c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 2 << IdxExpr->getSourceRange(); 12056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12084fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson // FIXME: We should handle the implicit 'this' parameter in a more generic 12094fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson // way that can be used for other arguments. 12104fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson bool HasImplicitThisParam = false; 12114fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(d)) { 12124fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson if (MD->isInstance()) { 12134fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson HasImplicitThisParam = true; 12144fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson NumArgs++; 12154fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson } 12164fb77202ceef22a572cf4357f380b08f6bcc5c36Anders Carlsson } 12171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12186b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { 1219fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 12203c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 2 << IdxExpr->getSourceRange(); 12216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12226b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12236b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12246b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: Do we need to bounds check? 12256b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned ArgIdx = Idx.getZExtValue() - 1; 1226bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 12274a2614e94672c47395abcde60518776fbebec589Sebastian Redl if (HasImplicitThisParam) { 12284a2614e94672c47395abcde60518776fbebec589Sebastian Redl if (ArgIdx == 0) { 12294a2614e94672c47395abcde60518776fbebec589Sebastian Redl S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 12304a2614e94672c47395abcde60518776fbebec589Sebastian Redl << "a string type" << IdxExpr->getSourceRange(); 12314a2614e94672c47395abcde60518776fbebec589Sebastian Redl return; 12324a2614e94672c47395abcde60518776fbebec589Sebastian Redl } 12334a2614e94672c47395abcde60518776fbebec589Sebastian Redl ArgIdx--; 12344a2614e94672c47395abcde60518776fbebec589Sebastian Redl } 12351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12366b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // make sure the format string is really a string 12373568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); 12386b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12392b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Kind == CFStringFormat) { 1240085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar if (!isCFStringType(Ty, S.Context)) { 1241fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1242fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "a CFString" << IdxExpr->getSourceRange(); 1243085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar return; 1244085e8f7da37a227ceee7f98b724e0a42e04d01caDaniel Dunbar } 12452b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar } else if (Kind == NSStringFormat) { 1246390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: do we need to check if the type is NSString*? What are the 1247390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // semantics? 1248803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!isNSStringType(Ty, S.Context)) { 1249390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Should highlight the actual expression that has the wrong type. 1250fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1251fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "an NSString" << IdxExpr->getSourceRange(); 12526b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 1253bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump } 12546b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else if (!Ty->isPointerType() || 12556217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek !Ty->getAs<PointerType>()->getPointeeType()->isCharType()) { 1256390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Should highlight the actual expression that has the wrong type. 1257fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_attribute_not) 1258fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "a string type" << IdxExpr->getSourceRange(); 12596b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12606b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12616b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12626b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the 3rd argument 1263545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); 1264803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner llvm::APSInt FirstArg(32); 1265803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { 1266fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) 12673c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 3 << FirstArgExpr->getSourceRange(); 12686b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12696b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12706b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check if the function is variadic if the 3rd argument non-zero 12726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FirstArg != 0) { 12733568249c2d72d58b835a22d9186f5a6b4fc4bcd6Daniel Dunbar if (isFunctionOrMethodVariadic(d)) { 12746b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner ++NumArgs; // +1 for ... 12756b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else { 1276803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); 12776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12796b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12813c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner // strftime requires FirstArg to be 0 because it doesn't read from any 12823c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner // variable the input is just the current time + the format string. 12832b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar if (Kind == StrftimeFormat) { 12846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (FirstArg != 0) { 1285fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) 1286fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << FirstArgExpr->getSourceRange(); 12876b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12886b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12896b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // if 0 it disables parameter checking (to use with e.g. va_list) 12906b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } else if (FirstArg != 0 && FirstArg != NumArgs) { 1291fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) 12923c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner << "format" << 3 << FirstArgExpr->getSourceRange(); 12936b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 12946b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 12956b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 12963d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek d->addAttr(::new (S.Context) FormatAttr(S.Context, Format, Idx.getZExtValue(), 12972b0d9a247ab375ca316bf04feede73de6672fc31Daniel Dunbar FirstArg.getZExtValue())); 12986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 12996b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13000b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, 13010b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner Sema &S) { 13026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1303545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 0) { 13043c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 13056b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13066b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13076b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13080c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor // Try to find the underlying union declaration. 13090c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor RecordDecl *RD = 0; 1310bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman TypedefDecl *TD = dyn_cast<TypedefDecl>(d); 13110c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (TD && TD->getUnderlyingType()->isUnionType()) 13120c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); 13130c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor else 13140c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor RD = dyn_cast<RecordDecl>(d); 13150c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor 13160c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (!RD || !RD->isUnion()) { 1317fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 13185dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 1 /*union*/; 13196b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13206b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13216b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13220c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (!RD->isDefinition()) { 1323bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), 13240c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::warn_transparent_union_attribute_not_definition); 13250c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor return; 13260c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor } 13270c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor 132817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis RecordDecl::field_iterator Field = RD->field_begin(), 132917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis FieldEnd = RD->field_end(); 13300c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (Field == FieldEnd) { 13310c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor S.Diag(Attr.getLoc(), diag::warn_transparent_union_attribute_zero_fields); 13320c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor return; 13330c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor } 1334bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman 13350c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor FieldDecl *FirstField = *Field; 13360c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor QualType FirstType = FirstField->getType(); 13370c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (FirstType->isFloatingType() || FirstType->isVectorType()) { 1338bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(FirstField->getLocation(), 13390c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::warn_transparent_union_attribute_floating); 13400c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor return; 13410c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor } 1342bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman 13430c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor uint64_t FirstSize = S.Context.getTypeSize(FirstType); 13440c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor uint64_t FirstAlign = S.Context.getTypeAlign(FirstType); 13450c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor for (; Field != FieldEnd; ++Field) { 13460c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor QualType FieldType = Field->getType(); 13470c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor if (S.Context.getTypeSize(FieldType) != FirstSize || 13480c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor S.Context.getTypeAlign(FieldType) != FirstAlign) { 13490c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor // Warn if we drop the attribute. 13500c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor bool isSize = S.Context.getTypeSize(FieldType) != FirstSize; 1351bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump unsigned FieldBits = isSize? S.Context.getTypeSize(FieldType) 13520c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor : S.Context.getTypeAlign(FieldType); 1353bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Field->getLocation(), 13540c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::warn_transparent_union_attribute_field_size_align) 13550c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor << isSize << Field->getDeclName() << FieldBits; 13560c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor unsigned FirstBits = isSize? FirstSize : FirstAlign; 1357bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(FirstField->getLocation(), 13580c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor diag::note_transparent_union_first_field_size_align) 13590c74e8a4e8865ec9ebb8efc0af247a3c077236c4Douglas Gregor << isSize << FirstBits; 1360bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman return; 1361bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman } 1362bc88745b43f440341e60ed93b0d27bac7c418029Eli Friedman } 13636b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 136440b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis RD->addAttr(::new (S.Context) TransparentUnionAttr()); 13656b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 13666b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13670b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { 13686b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1369545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 13703c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 13716b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13726b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1373797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); 1374797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); 1375bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 13766b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // Make sure that there is a string literal as the annotation's single 13776b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // argument. 13786b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner if (!SE) { 1379797c3c4f5dc4fda735e55c6b5d6270a54cf6d263Chris Lattner S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) <<"annotate"; 13806b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13816b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 13823d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek d->addAttr(::new (S.Context) AnnotateAttr(S.Context, SE->getString())); 13836b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 13846b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 1385803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattnerstatic void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { 13866b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // check the attribute arguments. 1387545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() > 1) { 13883c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 13896b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 13906b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1391bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 1392bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt //FIXME: The C++0x version of this attribute has more limited applicabilty 1393bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // than GNU's, and should error out when it is used to specify a 1394bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // weaker alignment, rather than being silently ignored. 13956b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner 13966b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner unsigned Align = 0; 1397545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() == 0) { 13986b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner // FIXME: This should be the target specific maximum alignment. 13997549c5589ac0d2087e55f2bdd4854adef23f29fdDaniel Dunbar // (For now we just use 128 bits which is the maximum on X86). 14006b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner Align = 128; 140140b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AlignedAttr(Align)); 14026b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner return; 14036b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner } 1404bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 140549e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); 140649e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner llvm::APSInt Alignment(32); 1407803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { 1408fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 1409fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "aligned" << alignmentExpr->getSourceRange(); 141049e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner return; 141149e2d34f74f98bef23e37c415ce90cd783cdea24Chris Lattner } 1412396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar if (!llvm::isPowerOf2_64(Alignment.getZExtValue())) { 1413bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump S.Diag(Attr.getLoc(), diag::err_attribute_aligned_not_power_of_two) 1414396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar << alignmentExpr->getSourceRange(); 1415396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar return; 1416396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar } 1417396b2a22788b0134018760d6a476de1e20f81334Daniel Dunbar 141840b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) AlignedAttr(Alignment.getZExtValue() * 8)); 14196b6b5372f4b60b1c5ee101709e71a04642c835f4Chris Lattner} 1420fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1421bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// HandleModeAttr - This attribute modifies the width of a decl with primitive 1422bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// type. 1423fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner/// 1424bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// Despite what would be logical, the mode attribute is a decl attribute, not a 1425bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make 'G' be 1426bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump/// HImode, not an intermediate pointer. 14270b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattnerstatic void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { 1428fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // This attribute isn't documented, but glibc uses it. It changes 1429fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // the width of an int or unsigned int to the specified size. 1430fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1431fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Check that there aren't any arguments 1432fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (Attr.getNumArgs() != 0) { 14333c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1434fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1435fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1436fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1437fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner IdentifierInfo *Name = Attr.getParameterName(); 1438fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!Name) { 14390b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); 1440fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1441fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1442210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar 144301eb9b9683535d8a65c704ad2c545903409e2d36Daniel Dunbar llvm::StringRef Str = Attr.getParameterName()->getName(); 1444fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1445fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Normalize the attribute name, __foo__ becomes foo. 1446210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar if (Str.startswith("__") && Str.endswith("__")) 1447210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar Str = Str.substr(2, Str.size() - 4); 1448fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1449fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner unsigned DestWidth = 0; 1450fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner bool IntegerMode = true; 145173397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman bool ComplexMode = false; 1452210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar switch (Str.size()) { 1453fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 2: 145473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman switch (Str[0]) { 145573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'Q': DestWidth = 8; break; 145673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'H': DestWidth = 16; break; 145773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'S': DestWidth = 32; break; 145873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'D': DestWidth = 64; break; 145973397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'X': DestWidth = 96; break; 146073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 'T': DestWidth = 128; break; 146173397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 146273397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (Str[1] == 'F') { 146373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman IntegerMode = false; 146473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else if (Str[1] == 'C') { 146573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman IntegerMode = false; 146673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman ComplexMode = true; 146773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else if (Str[1] != 'I') { 146873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman DestWidth = 0; 146973397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 1470fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1471fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 4: 1472fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // FIXME: glibc uses 'word' to define register_t; this is narrower than a 1473fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // pointer on PIC16 and other embedded platforms. 1474210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar if (Str == "word") 14750b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getPointerWidth(0); 1476210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar else if (Str == "byte") 14770b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getCharWidth(); 1478fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1479fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 7: 1480210ae989a51dcb115b928829abd7c4c4ae0c01bdDaniel Dunbar if (Str == "pointer") 14810b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner DestWidth = S.Context.Target.getPointerWidth(0); 1482fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1483fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1484fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1485fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner QualType OldTy; 1486fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) 1487fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner OldTy = TD->getUnderlyingType(); 1488fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) 1489fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner OldTy = VD->getType(); 1490fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else { 1491fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner S.Diag(D->getLocation(), diag::err_attr_wrong_decl) 1492fa25bbb351f4fdd977f51254119cdfc2b525ce90Chris Lattner << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); 1493fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1494fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 149573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman 1496183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType()) 149773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); 149873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman else if (IntegerMode) { 149973397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!OldTy->isIntegralType()) 150073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 150173397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else if (ComplexMode) { 150273397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!OldTy->isComplexType()) 150373397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 150473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } else { 150573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!OldTy->isFloatingType()) 150673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); 150773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 150873397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman 1509390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Sync this with InitializePredefinedMacros; we need to match int8_t 1510390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // and friends, at least with glibc. 1511390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // FIXME: Make sure 32/64-bit integers don't get defined to types of the wrong 1512390b4cc8b45a05612349269ef08faab3e4688f06Mike Stump // width on unusual platforms. 1513f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman // FIXME: Make sure floating-point mappings are accurate 1514f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman // FIXME: Support XF and TF types 1515fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner QualType NewTy; 1516fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner switch (DestWidth) { 1517fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 0: 15183c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; 1519fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1520fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner default: 15213c73c41cefcfe76f36b7bed72c9f1ec195490951Chris Lattner S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 1522fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner return; 1523fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 8: 152473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!IntegerMode) { 152573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 152673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman return; 152773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 1528fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (OldTy->isSignedIntegerType()) 15290b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.SignedCharTy; 1530fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 15310b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedCharTy; 1532fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1533fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 16: 153473397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (!IntegerMode) { 153573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 153673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman return; 153773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman } 1538fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (OldTy->isSignedIntegerType()) 15390b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.ShortTy; 1540fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 15410b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedShortTy; 1542fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1543fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 32: 1544fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!IntegerMode) 15450b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.FloatTy; 1546fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (OldTy->isSignedIntegerType()) 15470b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.IntTy; 1548fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 15490b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.UnsignedIntTy; 1550fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 1551fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner case 64: 1552fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner if (!IntegerMode) 15530b2f4da7651feb6edab5e4a657fce058f0dd514aChris Lattner NewTy = S.Context.DoubleTy; 1554fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else if (OldTy->isSignedIntegerType()) 1555aec7caa3c40891727164167ece11d552422803d2Chandler Carruth if (S.Context.Target.getLongWidth() == 64) 1556aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.LongTy; 1557aec7caa3c40891727164167ece11d552422803d2Chandler Carruth else 1558aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.LongLongTy; 1559fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner else 1560aec7caa3c40891727164167ece11d552422803d2Chandler Carruth if (S.Context.Target.getLongWidth() == 64) 1561aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.UnsignedLongTy; 1562aec7caa3c40891727164167ece11d552422803d2Chandler Carruth else 1563aec7caa3c40891727164167ece11d552422803d2Chandler Carruth NewTy = S.Context.UnsignedLongLongTy; 1564fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner break; 156573397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman case 96: 156673397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman NewTy = S.Context.LongDoubleTy; 156773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman break; 1568f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman case 128: 1569f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman if (!IntegerMode) { 1570f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; 1571f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman return; 1572f98aba35e6c3da5aae61843fc01334939e4e12ecEli Friedman } 1573f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson if (OldTy->isSignedIntegerType()) 1574f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson NewTy = S.Context.Int128Ty; 1575f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson else 1576f5f7d864f5067d1ea4bff7fcf41b53a43b7b48baAnders Carlsson NewTy = S.Context.UnsignedInt128Ty; 157773397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman break; 1578fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1579fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 158073397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman if (ComplexMode) { 158173397496fec250f565f49e27f8ba79f94f4e7427Eli Friedman NewTy = S.Context.getComplexType(NewTy); 1582fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner } 1583fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner 1584fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner // Install the new type. 1585ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { 1586ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall // FIXME: preserve existing source info. 1587a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TD->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(NewTy)); 1588ba6a9bd384df475780be636ca45bcef5c5bbd19fJohn McCall } else 1589fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner cast<ValueDecl>(D)->setType(NewTy); 1590fbf1347e1e225cbc206563bba3f0a75f9ceaa571Chris Lattner} 15910744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 15921feade8e520be483293dbf55eb57a51720899589Mike Stumpstatic void HandleNoDebugAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1593d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson // check the attribute arguments. 1594d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson if (Attr.getNumArgs() > 0) { 1595d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1596d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson return; 1597d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson } 1598e896d98548b02223c7740d807a0aa6e20fba7079Anders Carlsson 15995bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson if (!isFunctionOrMethod(d)) { 1600d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16015dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 1602d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson return; 1603d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson } 1604bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 16051feade8e520be483293dbf55eb57a51720899589Mike Stump d->addAttr(::new (S.Context) NoDebugAttr()); 1606d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson} 1607d87df37e0adaba0d5e33da7b1a14d7f1d94c5eefAnders Carlsson 16081feade8e520be483293dbf55eb57a51720899589Mike Stumpstatic void HandleNoInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { 16095bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson // check the attribute arguments. 16105bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson if (Attr.getNumArgs() != 0) { 16115bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 16125bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson return; 16135bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson } 1614bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1615c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (!isa<FunctionDecl>(d)) { 16165bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16175dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 16185bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson return; 16195bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson } 1620bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 16211feade8e520be483293dbf55eb57a51720899589Mike Stump d->addAttr(::new (S.Context) NoInlineAttr()); 16225bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson} 16235bab788d40026ad6e932a3cd9b86bc13f8a27661Anders Carlsson 1624cf2a7211b4785068c7efa836baab90b198a4d2a6Chris Lattnerstatic void HandleGNUInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { 162526e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner // check the attribute arguments. 162626e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner if (Attr.getNumArgs() != 0) { 162726e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 162826e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner return; 162926e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner } 1630bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1631c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); 1632c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner if (Fn == 0) { 163326e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16345dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 163526e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner return; 163626e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner } 1637bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 16380130f3cc4ccd5f46361c48d5fe94133d74619424Douglas Gregor if (!Fn->isInlineSpecified()) { 1639cf2a7211b4785068c7efa836baab90b198a4d2a6Chris Lattner S.Diag(Attr.getLoc(), diag::warn_gnu_inline_attribute_requires_inline); 1640c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner return; 1641c51974328b3a378c3c40b1fa527ecb928ed2bfdaChris Lattner } 1642bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 164340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) GNUInlineAttr()); 164426e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner} 164526e25545b26ec06f5d674dbae00fb168e6688d90Chris Lattner 1646ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanianstatic void HandleRegparmAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1647ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian // check the attribute arguments. 1648ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian if (Attr.getNumArgs() != 1) { 164955d3aaf9a537888734762170823daf750ea9036dEli Friedman S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 1650ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian return; 1651ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian } 165255d3aaf9a537888734762170823daf750ea9036dEli Friedman 1653ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian if (!isFunctionOrMethod(d)) { 1654ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) 16555dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek << Attr.getName() << 0 /*function*/; 1656ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian return; 1657ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian } 165855d3aaf9a537888734762170823daf750ea9036dEli Friedman 165955d3aaf9a537888734762170823daf750ea9036dEli Friedman Expr *NumParamsExpr = static_cast<Expr *>(Attr.getArg(0)); 166055d3aaf9a537888734762170823daf750ea9036dEli Friedman llvm::APSInt NumParams(32); 166155d3aaf9a537888734762170823daf750ea9036dEli Friedman if (!NumParamsExpr->isIntegerConstantExpr(NumParams, S.Context)) { 166255d3aaf9a537888734762170823daf750ea9036dEli Friedman S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 166355d3aaf9a537888734762170823daf750ea9036dEli Friedman << "regparm" << NumParamsExpr->getSourceRange(); 166455d3aaf9a537888734762170823daf750ea9036dEli Friedman return; 166555d3aaf9a537888734762170823daf750ea9036dEli Friedman } 166655d3aaf9a537888734762170823daf750ea9036dEli Friedman 1667264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov if (S.Context.Target.getRegParmMax() == 0) { 1668264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov S.Diag(Attr.getLoc(), diag::err_attribute_regparm_wrong_platform) 166955d3aaf9a537888734762170823daf750ea9036dEli Friedman << NumParamsExpr->getSourceRange(); 167055d3aaf9a537888734762170823daf750ea9036dEli Friedman return; 167155d3aaf9a537888734762170823daf750ea9036dEli Friedman } 167255d3aaf9a537888734762170823daf750ea9036dEli Friedman 1673348f28ab6a574df6501ff8b76f9fc6753c155badAnton Korobeynikov if (NumParams.getLimitedValue(255) > S.Context.Target.getRegParmMax()) { 1674264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov S.Diag(Attr.getLoc(), diag::err_attribute_regparm_invalid_number) 1675264a76cdf382c507f4d43e64c89f1503f003ac95Anton Korobeynikov << S.Context.Target.getRegParmMax() << NumParamsExpr->getSourceRange(); 167655d3aaf9a537888734762170823daf750ea9036dEli Friedman return; 167755d3aaf9a537888734762170823daf750ea9036dEli Friedman } 167855d3aaf9a537888734762170823daf750ea9036dEli Friedman 167940b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) RegparmAttr(NumParams.getZExtValue())); 1680ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian} 1681ee760330a415635369556796a97afcfd6207f4dcFariborz Jahanian 1682bbd37c62e34db3f5a95c899723484a76c71d7757Sean Huntstatic void HandleFinalAttr(Decl *d, const AttributeList &Attr, Sema &S) { 1683bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt // check the attribute arguments. 1684bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr.getNumArgs() != 0) { 1685bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 1686bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return; 1687bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 1688bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 1689bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (!isa<CXXRecordDecl>(d) 1690bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt && (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual())) { 1691bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt S.Diag(Attr.getLoc(), 1692bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 1693bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt : diag::warn_attribute_wrong_decl_type) 1694bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt << Attr.getName() << 7 /*virtual method or class*/; 1695bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return; 1696bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt } 16977725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 16987725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: Conform to C++0x redeclaration rules. 16997725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17007725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<FinalAttr>()) { 17017725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "final"; 17027725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17037725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 1704bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 1705bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt d->addAttr(::new (S.Context) FinalAttr()); 1706bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt} 1707bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 17080744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner//===----------------------------------------------------------------------===// 17097725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt// C++0x member checking attributes 17107725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt//===----------------------------------------------------------------------===// 17117725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17127725e67639fa2fe74f8775b7ed884a076ffdbffcSean Huntstatic void HandleBaseCheckAttr(Decl *d, const AttributeList &Attr, Sema &S) { 17137725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (Attr.getNumArgs() != 0) { 17147725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 17157725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17167725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17177725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17187725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (!isa<CXXRecordDecl>(d)) { 17197725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), 17207725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 17217725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt : diag::warn_attribute_wrong_decl_type) 17227725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt << Attr.getName() << 9 /*class*/; 17237725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17247725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17257725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17267725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<BaseCheckAttr>()) { 17277725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "base_check"; 17287725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17297725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17307725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17317725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt d->addAttr(::new (S.Context) BaseCheckAttr()); 17327725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt} 17337725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17347725e67639fa2fe74f8775b7ed884a076ffdbffcSean Huntstatic void HandleHidingAttr(Decl *d, const AttributeList &Attr, Sema &S) { 17357725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (Attr.getNumArgs() != 0) { 17367725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 17377725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17387725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17397725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17407725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (!isa<RecordDecl>(d->getDeclContext())) { 17417725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: It's not the type that's the problem 17427725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), 17437725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 17447725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt : diag::warn_attribute_wrong_decl_type) 17457725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt << Attr.getName() << 11 /*member*/; 17467725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17477725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17487725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17497725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: Conform to C++0x redeclaration rules. 17507725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17517725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<HidingAttr>()) { 17527725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "hiding"; 17537725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17547725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17557725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17567725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt d->addAttr(::new (S.Context) HidingAttr()); 17577725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt} 17587725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17597725e67639fa2fe74f8775b7ed884a076ffdbffcSean Huntstatic void HandleOverrideAttr(Decl *d, const AttributeList &Attr, Sema &S) { 17607725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (Attr.getNumArgs() != 0) { 17617725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; 17627725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17637725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17647725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17657725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual()) { 17667725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: It's not the type that's the problem 17677725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), 17687725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type 17697725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt : diag::warn_attribute_wrong_decl_type) 17707725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt << Attr.getName() << 10 /*virtual method*/; 17717725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17727725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17737725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17747725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt // FIXME: Conform to C++0x redeclaration rules. 17757725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17767725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt if (d->getAttr<OverrideAttr>()) { 17777725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "override"; 17787725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt return; 17797725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt } 17807725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17817725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt d->addAttr(::new (S.Context) OverrideAttr()); 17827725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt} 17837725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt 17847725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt//===----------------------------------------------------------------------===// 1785b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek// Checker-specific attribute handlers. 1786b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek//===----------------------------------------------------------------------===// 1787b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 1788b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenekstatic void HandleNSReturnsRetainedAttr(Decl *d, const AttributeList &Attr, 1789b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek Sema &S) { 1790b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 17915dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek QualType RetTy; 1792bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 17935dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) 17945dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek RetTy = MD->getResultType(); 17955dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) 17965dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek RetTy = FD->getResultType(); 17975dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek else { 179821531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek SourceLocation L = Attr.getLoc(); 179921531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type) 180021531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek << SourceRange(L, L) << Attr.getName() << 3 /* function or method */; 1801b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 1802b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek } 1803bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 18046217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (!(S.Context.isObjCNSObjectType(RetTy) || RetTy->getAs<PointerType>() 1805183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall || RetTy->getAs<ObjCObjectPointerType>())) { 180621531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek SourceLocation L = Attr.getLoc(); 180721531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek S.Diag(d->getLocStart(), diag::warn_ns_attribute_wrong_return_type) 180821531fa592cd76e5d3df839ce469bea918404ac8Ted Kremenek << SourceRange(L, L) << Attr.getName(); 1809bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump return; 18105dc53c9c2328b5bea5422005b04960c18afd83adTed Kremenek } 1811bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 1812b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek switch (Attr.getKind()) { 1813b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek default: 1814b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek assert(0 && "invalid ownership attribute"); 1815b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 181631c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_cf_returns_not_retained: 181731c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek d->addAttr(::new (S.Context) CFReturnsNotRetainedAttr()); 181831c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek return; 181931c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_ns_returns_not_retained: 182031c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek d->addAttr(::new (S.Context) NSReturnsNotRetainedAttr()); 182131c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek return; 1822b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_cf_returns_retained: 182340b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) CFReturnsRetainedAttr()); 1824b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 1825b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_ns_returns_retained: 182640b598eea1310ec9ed554d56ce3e25b34c585458Argyrios Kyrtzidis d->addAttr(::new (S.Context) NSReturnsRetainedAttr()); 1827b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek return; 1828b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek }; 1829b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek} 1830b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 1831f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davisstatic bool isKnownDeclSpecAttr(const AttributeList &Attr) { 1832f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis return Attr.getKind() == AttributeList::AT_dllimport || 1833f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis Attr.getKind() == AttributeList::AT_dllexport; 1834f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis} 1835f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis 1836b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek//===----------------------------------------------------------------------===// 18370744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner// Top Level Sema Entry Points 18380744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner//===----------------------------------------------------------------------===// 18390744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner 1840a89d82c1c819d17042ec2db4283326a850229b21Sebastian Redl/// ProcessDeclAttribute - Apply the specific attribute to the specified decl if 1841803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// the attribute applies to decls. If the attribute is a type attribute, just 1842bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// silently ignore it if a GNU attribute. FIXME: Applying a C++0x attribute to 1843bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt/// the wrong thing is illegal (C++0x [dcl.attr.grammar]/4). 1844bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stumpstatic void ProcessDeclAttribute(Scope *scope, Decl *D, 1845bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump const AttributeList &Attr, Sema &S) { 1846f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis if (Attr.isDeclspecAttribute() && !isKnownDeclSpecAttr(Attr)) 1847f0122fe49329cb439d55a6712bfcaad9a6570428Charles Davis // FIXME: Try to deal with other __declspec attributes! 1848290eeb0ec2b6b91f3621e05ef541deb257fbea73Eli Friedman return; 1849803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner switch (Attr.getKind()) { 185063e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek case AttributeList::AT_IBAction: HandleIBAction(D, Attr, S); break; 185163e5d7c85299134f088033614afd9eb213c50b48Ted Kremenek case AttributeList::AT_IBOutlet: HandleIBOutlet(D, Attr, S); break; 1852803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_address_space: 1853ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian case AttributeList::AT_objc_gc: 18546e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson case AttributeList::AT_vector_size: 1855bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // Ignore these, these are type attributes, handled by 1856bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump // ProcessTypeAttributes. 1857803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 18587725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; 18597725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; 1860bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump case AttributeList::AT_always_inline: 1861af668b0e7d3581dea3b4f29a9262686e83887e5bDaniel Dunbar HandleAlwaysInlineAttr (D, Attr, S); break; 1862b725232b46e92f3e36b03a32a6fc75748c312122Ted Kremenek case AttributeList::AT_analyzer_noreturn: 1863bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump HandleAnalyzerNoReturnAttr (D, Attr, S); break; 18647725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; 18657725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_base_check: HandleBaseCheckAttr (D, Attr, S); break; 1866bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt case AttributeList::AT_carries_dependency: 18677725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt HandleDependencyAttr (D, Attr, S); break; 18687725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_constructor: HandleConstructorAttr (D, Attr, S); break; 18697725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_deprecated: HandleDeprecatedAttr (D, Attr, S); break; 18707725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_destructor: HandleDestructorAttr (D, Attr, S); break; 18713068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar case AttributeList::AT_ext_vector_type: 18729cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor HandleExtVectorTypeAttr(scope, D, Attr, S); 18733068ae0feb5d477477f45045f7ec9d0414fe57f3Daniel Dunbar break; 18747725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_final: HandleFinalAttr (D, Attr, S); break; 18757725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; 18767725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_format_arg: HandleFormatArgAttr (D, Attr, S); break; 18777725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_gnu_inline: HandleGNUInlineAttr (D, Attr, S); break; 18787725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_hiding: HandleHidingAttr (D, Attr, S); break; 18797725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; 18807725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_malloc: HandleMallocAttr (D, Attr, S); break; 18817725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; 18827725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; 18837725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; 18847725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_override: HandleOverrideAttr (D, Attr, S); break; 1885b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 1886b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek // Checker-specific. 188731c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_ns_returns_not_retained: 188831c780d95a830f0187cfcbb1016ce88f50a7dfe1Ted Kremenek case AttributeList::AT_cf_returns_not_retained: 1889b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_ns_returns_retained: 1890b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek case AttributeList::AT_cf_returns_retained: 1891b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek HandleNSReturnsRetainedAttr(D, Attr, S); break; 1892b71368d28532908ae1c2dc23f91761781205b3d0Ted Kremenek 18936f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman case AttributeList::AT_reqd_wg_size: 18946f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman HandleReqdWorkGroupSize(D, Attr, S); break; 18956f3d838867538638b9bbf412028e8537ae12f3e5Nate Begeman 18967725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; 18977725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_section: HandleSectionAttr (D, Attr, S); break; 18987725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_unavailable: HandleUnavailableAttr (D, Attr, S); break; 18997725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; 19007725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_used: HandleUsedAttr (D, Attr, S); break; 19017725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_visibility: HandleVisibilityAttr (D, Attr, S); break; 1902026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner case AttributeList::AT_warn_unused_result: HandleWarnUnusedResult(D,Attr,S); 1903026dc96ac6ece60da5e1b98e2a71bd0ff0939fd8Chris Lattner break; 19047725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; 190511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola case AttributeList::AT_weakref: HandleWeakRefAttr (D, Attr, S); break; 19067725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_weak_import: HandleWeakImportAttr (D, Attr, S); break; 1907803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner case AttributeList::AT_transparent_union: 1908803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner HandleTransparentUnionAttr(D, Attr, S); 1909803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 19100db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner case AttributeList::AT_objc_exception: 19110db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner HandleObjCExceptionAttr(D, Attr, S); 19120db29ece81d360dcefbe912339c34abe5917f6a9Chris Lattner break; 1913f9201e0ff1779567150b70856753d9f2c6a91467Douglas Gregor case AttributeList::AT_overloadable:HandleOverloadableAttr(D, Attr, S); break; 19147725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nsobject: HandleObjCNSObject (D, Attr, S); break; 19157725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; 19167725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; 19177725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; 19187725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; 19197725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break; 19207725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_nodebug: HandleNoDebugAttr (D, Attr, S); break; 19217725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_noinline: HandleNoInlineAttr (D, Attr, S); break; 19227725e67639fa2fe74f8775b7ed884a076ffdbffcSean Hunt case AttributeList::AT_regparm: HandleRegparmAttr (D, Attr, S); break; 1923bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump case AttributeList::IgnoredAttribute: 19245e204486a7dd1e5f7e14e941a2c7e707a8ad1a3bChris Lattner case AttributeList::AT_no_instrument_function: // Interacts with -pg. 192505f8e471aae971c9867dbac148eba1275a570814Anders Carlsson // Just ignore 192605f8e471aae971c9867dbac148eba1275a570814Anders Carlsson break; 192704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall case AttributeList::AT_stdcall: 192804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall case AttributeList::AT_cdecl: 192904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall case AttributeList::AT_fastcall: 193004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // These are all treated as type attributes. 193104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall break; 1932803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner default: 193382d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov // Ask target about the attribute. 193482d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema(); 193582d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S)) 193682d0a418c8699fc6f4a9417457ffe93d43bba1c1Anton Korobeynikov S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); 1937803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner break; 1938803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner } 1939803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner} 1940803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 1941803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// ProcessDeclAttributeList - Apply all the decl attributes in the specified 1942803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner/// attribute list to the specified decl, ignoring any type attributes. 19439cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregorvoid Sema::ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AttrList) { 194411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola for (const AttributeList* l = AttrList; l; l = l->getNext()) { 194511e8ce7380856abee188b237c2600272df2ed09dRafael Espindola ProcessDeclAttribute(S, D, *l, *this); 194611e8ce7380856abee188b237c2600272df2ed09dRafael Espindola } 194711e8ce7380856abee188b237c2600272df2ed09dRafael Espindola 194811e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // GCC accepts 194911e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // static int a9 __attribute__((weakref)); 195011e8ce7380856abee188b237c2600272df2ed09dRafael Espindola // but that looks really pointless. We reject it. 195111e8ce7380856abee188b237c2600272df2ed09dRafael Espindola if (D->hasAttr<WeakRefAttr>() && !D->hasAttr<AliasAttr>()) { 195211e8ce7380856abee188b237c2600272df2ed09dRafael Espindola Diag(AttrList->getLoc(), diag::err_attribute_weakref_without_alias) << 195311e8ce7380856abee188b237c2600272df2ed09dRafael Espindola dyn_cast<NamedDecl>(D)->getNameAsString(); 195411e8ce7380856abee188b237c2600272df2ed09dRafael Espindola return; 1955803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner } 1956803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner} 1957803d08039c5194cf51071ed1d8fbc5b18b3ec38bChris Lattner 1958e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// DeclClonePragmaWeak - clone existing decl (maybe definition), 1959e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// #pragma weak needs a non-definition decl and source may not have one 19601eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpNamedDecl * Sema::DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II) { 19617b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynn assert(isa<FunctionDecl>(ND) || isa<VarDecl>(ND)); 1962e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn NamedDecl *NewD = 0; 1963e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) { 1964e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn NewD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(), 1965e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn FD->getLocation(), DeclarationName(II), 1966a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall FD->getType(), FD->getTypeSourceInfo()); 1967b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (FD->getQualifier()) { 1968b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall FunctionDecl *NewFD = cast<FunctionDecl>(NewD); 1969b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NewFD->setQualifierInfo(FD->getQualifier(), FD->getQualifierRange()); 1970b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall } 1971e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } else if (VarDecl *VD = dyn_cast<VarDecl>(ND)) { 1972e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn NewD = VarDecl::Create(VD->getASTContext(), VD->getDeclContext(), 1973e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn VD->getLocation(), II, 1974a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall VD->getType(), VD->getTypeSourceInfo(), 1975a1d5662d96465f0fddf8819d245da4d19b892effArgyrios Kyrtzidis VD->getStorageClass()); 1976b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall if (VD->getQualifier()) { 1977b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall VarDecl *NewVD = cast<VarDecl>(NewD); 1978b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall NewVD->setQualifierInfo(VD->getQualifier(), VD->getQualifierRange()); 1979b6217665c6a987f2d6c8665fd70365d7719ac4dfJohn McCall } 1980e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 1981e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn return NewD; 1982e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn} 1983e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn 1984e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// DeclApplyPragmaWeak - A declaration (maybe definition) needs #pragma weak 1985e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn/// applied to it, possibly with an alias. 19867b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynnvoid Sema::DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W) { 1987c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner if (W.getUsed()) return; // only do this once 1988c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner W.setUsed(true); 1989c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner if (W.getAlias()) { // clone decl, impersonate __attribute(weak,alias(...)) 1990c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner IdentifierInfo *NDId = ND->getIdentifier(); 1991c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner NamedDecl *NewD = DeclClonePragmaWeak(ND, W.getAlias()); 19923d2c43e9a7ca55f5ddc1f0c77d8f5e5ea7c1b573Ted Kremenek NewD->addAttr(::new (Context) AliasAttr(Context, NDId->getName())); 1993c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner NewD->addAttr(::new (Context) WeakAttr()); 1994c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner WeakTopLevelDecl.push_back(NewD); 1995c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner // FIXME: "hideous" code from Sema::LazilyCreateBuiltin 1996c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner // to insert Decl at TU scope, sorry. 1997c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner DeclContext *SavedContext = CurContext; 1998c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner CurContext = Context.getTranslationUnitDecl(); 1999c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner PushOnScopeChains(NewD, S); 2000c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner CurContext = SavedContext; 2001c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner } else { // just add weak to existing 2002c4f1fb125d4fe2c8879030d6f6e8b2f75cb681f1Chris Lattner ND->addAttr(::new (Context) WeakAttr()); 2003e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2004e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn} 2005e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn 20060744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in 20070744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// it, apply them to D. This is a bit tricky because PD can have attributes 20080744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner/// specified in many different places, and we need to find and apply them all. 20099cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregorvoid Sema::ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD) { 2010e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn // Handle #pragma weak 2011e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) { 2012e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (ND->hasLinkage()) { 2013e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn WeakInfo W = WeakUndeclaredIdentifiers.lookup(ND->getIdentifier()); 2014e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn if (W != WeakInfo()) { 20157b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynn // Identifier referenced by #pragma weak before it was declared 20167b1fdbda2757cc4a7f25664475be44119d7f8e59Ryan Flynn DeclApplyPragmaWeak(S, ND, W); 2017e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn WeakUndeclaredIdentifiers[ND->getIdentifier()] = W; 2018e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2019e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2020e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn } 2021e25ff83fb7eee9eeda89b6f2371bc33a37bf1028Ryan Flynn 20220744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Apply decl attributes from the DeclSpec if present. 20230744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) 20249cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor ProcessDeclAttributeList(S, D, Attrs); 2025bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 20260744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Walk the declarator structure, applying decl attributes that were in a type 20270744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // position to the decl itself. This handles cases like: 20280744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // int *__attr__(x)** D; 20290744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // when X is a decl attribute. 20300744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) 20310744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) 20329cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor ProcessDeclAttributeList(S, D, Attrs); 2033bf91650557d9afa08e3d311a9c0a10d73c62cbfcMike Stump 20340744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner // Finally, apply any attributes on the decl itself. 20350744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner if (const AttributeList *Attrs = PD.getAttributes()) 20369cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor ProcessDeclAttributeList(S, D, Attrs); 20370744e5f3325e2d2107506002e43c37ea0155a5acChris Lattner} 203854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 203954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// PushParsingDeclaration - Enter a new "scope" of deprecation 204054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// warnings. 204154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// 204254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// The state token we use is the start index of this scope 204354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall/// on the warning stack. 204454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallAction::ParsingDeclStackState Sema::PushParsingDeclaration() { 204554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall ParsingDeclDepth++; 20462f514480c448708ec382a684cf5e035d3a827ec8John McCall return (ParsingDeclStackState) DelayedDiagnostics.size(); 204754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall} 204854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 204954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallvoid Sema::PopParsingDeclaration(ParsingDeclStackState S, DeclPtrTy Ctx) { 205054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall assert(ParsingDeclDepth > 0 && "empty ParsingDeclaration stack"); 205154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall ParsingDeclDepth--; 205254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 20532f514480c448708ec382a684cf5e035d3a827ec8John McCall if (DelayedDiagnostics.empty()) 205454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall return; 205554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 205654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall unsigned SavedIndex = (unsigned) S; 20572f514480c448708ec382a684cf5e035d3a827ec8John McCall assert(SavedIndex <= DelayedDiagnostics.size() && 205854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall "saved index is out of bounds"); 205954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 206058e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall unsigned E = DelayedDiagnostics.size(); 206158e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall 20622f514480c448708ec382a684cf5e035d3a827ec8John McCall // We only want to actually emit delayed diagnostics when we 20632f514480c448708ec382a684cf5e035d3a827ec8John McCall // successfully parsed a decl. 20642f514480c448708ec382a684cf5e035d3a827ec8John McCall Decl *D = Ctx ? Ctx.getAs<Decl>() : 0; 20652f514480c448708ec382a684cf5e035d3a827ec8John McCall if (D) { 20662f514480c448708ec382a684cf5e035d3a827ec8John McCall // We really do want to start with 0 here. We get one push for a 20672f514480c448708ec382a684cf5e035d3a827ec8John McCall // decl spec and another for each declarator; in a decl group like: 20682f514480c448708ec382a684cf5e035d3a827ec8John McCall // deprecated_typedef foo, *bar, baz(); 20692f514480c448708ec382a684cf5e035d3a827ec8John McCall // only the declarator pops will be passed decls. This is correct; 20702f514480c448708ec382a684cf5e035d3a827ec8John McCall // we really do need to consider delayed diagnostics from the decl spec 20712f514480c448708ec382a684cf5e035d3a827ec8John McCall // for each of the different declarations. 207258e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall for (unsigned I = 0; I != E; ++I) { 20732f514480c448708ec382a684cf5e035d3a827ec8John McCall if (DelayedDiagnostics[I].Triggered) 20742f514480c448708ec382a684cf5e035d3a827ec8John McCall continue; 20752f514480c448708ec382a684cf5e035d3a827ec8John McCall 20762f514480c448708ec382a684cf5e035d3a827ec8John McCall switch (DelayedDiagnostics[I].Kind) { 20772f514480c448708ec382a684cf5e035d3a827ec8John McCall case DelayedDiagnostic::Deprecation: 20782f514480c448708ec382a684cf5e035d3a827ec8John McCall HandleDelayedDeprecationCheck(DelayedDiagnostics[I], D); 20792f514480c448708ec382a684cf5e035d3a827ec8John McCall break; 20802f514480c448708ec382a684cf5e035d3a827ec8John McCall 20812f514480c448708ec382a684cf5e035d3a827ec8John McCall case DelayedDiagnostic::Access: 20822f514480c448708ec382a684cf5e035d3a827ec8John McCall HandleDelayedAccessCheck(DelayedDiagnostics[I], D); 20832f514480c448708ec382a684cf5e035d3a827ec8John McCall break; 208454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 208554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 208654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 208754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 208858e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall // Destroy all the delayed diagnostics we're about to pop off. 208958e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall for (unsigned I = SavedIndex; I != E; ++I) 209058e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall DelayedDiagnostics[I].destroy(); 209158e6f34e4d2c668562e1c391162ee9de7b05fbb2John McCall 20922f514480c448708ec382a684cf5e035d3a827ec8John McCall DelayedDiagnostics.set_size(SavedIndex); 20932f514480c448708ec382a684cf5e035d3a827ec8John McCall} 20942f514480c448708ec382a684cf5e035d3a827ec8John McCall 20952f514480c448708ec382a684cf5e035d3a827ec8John McCallstatic bool isDeclDeprecated(Decl *D) { 20962f514480c448708ec382a684cf5e035d3a827ec8John McCall do { 20972f514480c448708ec382a684cf5e035d3a827ec8John McCall if (D->hasAttr<DeprecatedAttr>()) 20982f514480c448708ec382a684cf5e035d3a827ec8John McCall return true; 20992f514480c448708ec382a684cf5e035d3a827ec8John McCall } while ((D = cast_or_null<Decl>(D->getDeclContext()))); 21002f514480c448708ec382a684cf5e035d3a827ec8John McCall return false; 21012f514480c448708ec382a684cf5e035d3a827ec8John McCall} 21022f514480c448708ec382a684cf5e035d3a827ec8John McCall 21032f514480c448708ec382a684cf5e035d3a827ec8John McCallvoid Sema::HandleDelayedDeprecationCheck(Sema::DelayedDiagnostic &DD, 21042f514480c448708ec382a684cf5e035d3a827ec8John McCall Decl *Ctx) { 21052f514480c448708ec382a684cf5e035d3a827ec8John McCall if (isDeclDeprecated(Ctx)) 21062f514480c448708ec382a684cf5e035d3a827ec8John McCall return; 21072f514480c448708ec382a684cf5e035d3a827ec8John McCall 21082f514480c448708ec382a684cf5e035d3a827ec8John McCall DD.Triggered = true; 21092f514480c448708ec382a684cf5e035d3a827ec8John McCall Diag(DD.Loc, diag::warn_deprecated) 21102f514480c448708ec382a684cf5e035d3a827ec8John McCall << DD.DeprecationData.Decl->getDeclName(); 211154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall} 211254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 211354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCallvoid Sema::EmitDeprecationWarning(NamedDecl *D, SourceLocation Loc) { 211454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Delay if we're currently parsing a declaration. 211554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall if (ParsingDeclDepth) { 21162f514480c448708ec382a684cf5e035d3a827ec8John McCall DelayedDiagnostics.push_back(DelayedDiagnostic::makeDeprecation(Loc, D)); 211754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall return; 211854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall } 211954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 212054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Otherwise, don't warn if our current context is deprecated. 212154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall if (isDeclDeprecated(cast<Decl>(CurContext))) 212254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall return; 212354abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 212454abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall Diag(Loc, diag::warn_deprecated) << D->getDeclName(); 212554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall} 2126