Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1 | //===--- SemaDeclAttr.cpp - Declaration Attribute Handling ----------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements decl-related attribute processing. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "Sema.h" |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 15 | #include "TargetAttributesSema.h" |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 16 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | acc5f3e | 2008-08-11 06:23:49 +0000 | [diff] [blame] | 17 | #include "clang/AST/DeclObjC.h" |
| 18 | #include "clang/AST/Expr.h" |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 19 | #include "clang/Basic/TargetInfo.h" |
Daniel Dunbar | 12bc692 | 2008-08-11 03:27:53 +0000 | [diff] [blame] | 20 | #include "clang/Parse/DeclSpec.h" |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 21 | #include "llvm/ADT/StringExtras.h" |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 22 | using namespace clang; |
| 23 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 24 | //===----------------------------------------------------------------------===// |
| 25 | // Helper functions |
| 26 | //===----------------------------------------------------------------------===// |
| 27 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 28 | static const FunctionType *getFunctionType(const Decl *d, |
| 29 | bool blocksToo = true) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 30 | QualType Ty; |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 31 | if (const ValueDecl *decl = dyn_cast<ValueDecl>(d)) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 32 | Ty = decl->getType(); |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 33 | else if (const FieldDecl *decl = dyn_cast<FieldDecl>(d)) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 34 | Ty = decl->getType(); |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 35 | else if (const TypedefDecl* decl = dyn_cast<TypedefDecl>(d)) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 36 | Ty = decl->getUnderlyingType(); |
| 37 | else |
| 38 | return 0; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 39 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 40 | if (Ty->isFunctionPointerType()) |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 41 | Ty = Ty->getAs<PointerType>()->getPointeeType(); |
Fariborz Jahanian | 755f9d2 | 2009-05-18 17:39:25 +0000 | [diff] [blame] | 42 | else if (blocksToo && Ty->isBlockPointerType()) |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 43 | Ty = Ty->getAs<BlockPointerType>()->getPointeeType(); |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 44 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 45 | return Ty->getAs<FunctionType>(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 46 | } |
| 47 | |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 48 | // FIXME: We should provide an abstraction around a method or function |
| 49 | // to provide the following bits of information. |
| 50 | |
Nuno Lopes | d20254f | 2009-12-20 23:11:08 +0000 | [diff] [blame] | 51 | /// isFunction - Return true if the given decl has function |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 52 | /// type (function or function-typed variable). |
| 53 | static bool isFunction(const Decl *d) { |
| 54 | return getFunctionType(d, false) != NULL; |
| 55 | } |
| 56 | |
| 57 | /// isFunctionOrMethod - Return true if the given decl has function |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 58 | /// type (function or function-typed variable) or an Objective-C |
| 59 | /// method. |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 60 | static bool isFunctionOrMethod(const Decl *d) { |
| 61 | return isFunction(d)|| isa<ObjCMethodDecl>(d); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 62 | } |
| 63 | |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 64 | /// isFunctionOrMethodOrBlock - Return true if the given decl has function |
| 65 | /// type (function or function-typed variable) or an Objective-C |
| 66 | /// method or a block. |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 67 | static bool isFunctionOrMethodOrBlock(const Decl *d) { |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 68 | if (isFunctionOrMethod(d)) |
| 69 | return true; |
| 70 | // check for block is more involved. |
| 71 | if (const VarDecl *V = dyn_cast<VarDecl>(d)) { |
| 72 | QualType Ty = V->getType(); |
| 73 | return Ty->isBlockPointerType(); |
| 74 | } |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 75 | return isa<BlockDecl>(d); |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 76 | } |
| 77 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 78 | /// hasFunctionProto - Return true if the given decl has a argument |
| 79 | /// information. This decl should have already passed |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 80 | /// isFunctionOrMethod or isFunctionOrMethodOrBlock. |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 81 | static bool hasFunctionProto(const Decl *d) { |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 82 | if (const FunctionType *FnTy = getFunctionType(d)) |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 83 | return isa<FunctionProtoType>(FnTy); |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 84 | else { |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 85 | assert(isa<ObjCMethodDecl>(d) || isa<BlockDecl>(d)); |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 86 | return true; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | /// getFunctionOrMethodNumArgs - Return number of function or method |
| 91 | /// arguments. It is an error to call this on a K&R function (use |
| 92 | /// hasFunctionProto first). |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 93 | static unsigned getFunctionOrMethodNumArgs(const Decl *d) { |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 94 | if (const FunctionType *FnTy = getFunctionType(d)) |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 95 | return cast<FunctionProtoType>(FnTy)->getNumArgs(); |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 96 | if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) |
| 97 | return BD->getNumParams(); |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 98 | return cast<ObjCMethodDecl>(d)->param_size(); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 99 | } |
| 100 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 101 | static QualType getFunctionOrMethodArgType(const Decl *d, unsigned Idx) { |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 102 | if (const FunctionType *FnTy = getFunctionType(d)) |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 103 | return cast<FunctionProtoType>(FnTy)->getArgType(Idx); |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 104 | if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) |
| 105 | return BD->getParamDecl(Idx)->getType(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 106 | |
Chris Lattner | 89951a8 | 2009-02-20 18:43:26 +0000 | [diff] [blame] | 107 | return cast<ObjCMethodDecl>(d)->param_begin()[Idx]->getType(); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 108 | } |
| 109 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 110 | static QualType getFunctionOrMethodResultType(const Decl *d) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 111 | if (const FunctionType *FnTy = getFunctionType(d)) |
| 112 | return cast<FunctionProtoType>(FnTy)->getResultType(); |
| 113 | return cast<ObjCMethodDecl>(d)->getResultType(); |
| 114 | } |
| 115 | |
Ted Kremenek | a18d7d8 | 2009-08-14 20:49:40 +0000 | [diff] [blame] | 116 | static bool isFunctionOrMethodVariadic(const Decl *d) { |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 117 | if (const FunctionType *FnTy = getFunctionType(d)) { |
Douglas Gregor | 72564e7 | 2009-02-26 23:50:07 +0000 | [diff] [blame] | 118 | const FunctionProtoType *proto = cast<FunctionProtoType>(FnTy); |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 119 | return proto->isVariadic(); |
Fariborz Jahanian | d66f22d | 2009-05-19 17:08:59 +0000 | [diff] [blame] | 120 | } else if (const BlockDecl *BD = dyn_cast<BlockDecl>(d)) |
| 121 | return BD->IsVariadic(); |
| 122 | else { |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 123 | return cast<ObjCMethodDecl>(d)->isVariadic(); |
| 124 | } |
| 125 | } |
| 126 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 127 | static inline bool isNSStringType(QualType T, ASTContext &Ctx) { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 128 | const ObjCObjectPointerType *PT = T->getAs<ObjCObjectPointerType>(); |
Chris Lattner | b77792e | 2008-07-26 22:17:49 +0000 | [diff] [blame] | 129 | if (!PT) |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 130 | return false; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 131 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 132 | const ObjCInterfaceType *ClsT =PT->getPointeeType()->getAs<ObjCInterfaceType>(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 133 | if (!ClsT) |
| 134 | return false; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 135 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 136 | IdentifierInfo* ClsName = ClsT->getDecl()->getIdentifier(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 137 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 138 | // FIXME: Should we walk the chain of classes? |
| 139 | return ClsName == &Ctx.Idents.get("NSString") || |
| 140 | ClsName == &Ctx.Idents.get("NSMutableString"); |
| 141 | } |
| 142 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 143 | static inline bool isCFStringType(QualType T, ASTContext &Ctx) { |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 144 | const PointerType *PT = T->getAs<PointerType>(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 145 | if (!PT) |
| 146 | return false; |
| 147 | |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 148 | const RecordType *RT = PT->getPointeeType()->getAs<RecordType>(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 149 | if (!RT) |
| 150 | return false; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 151 | |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 152 | const RecordDecl *RD = RT->getDecl(); |
| 153 | if (RD->getTagKind() != TagDecl::TK_struct) |
| 154 | return false; |
| 155 | |
| 156 | return RD->getIdentifier() == &Ctx.Idents.get("__CFString"); |
| 157 | } |
| 158 | |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 159 | //===----------------------------------------------------------------------===// |
Chris Lattner | e5c5ee1 | 2008-06-29 00:16:31 +0000 | [diff] [blame] | 160 | // Attribute Implementations |
| 161 | //===----------------------------------------------------------------------===// |
| 162 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 163 | // FIXME: All this manual attribute parsing code is gross. At the |
| 164 | // least add some helper functions to check most argument patterns (# |
| 165 | // and types of args). |
| 166 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 167 | static void HandleExtVectorTypeAttr(Scope *scope, Decl *d, |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 168 | const AttributeList &Attr, Sema &S) { |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 169 | TypedefDecl *tDecl = dyn_cast<TypedefDecl>(d); |
| 170 | if (tDecl == 0) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 171 | S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef); |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 172 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 173 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 174 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 175 | QualType curType = tDecl->getUnderlyingType(); |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 176 | |
| 177 | Expr *sizeExpr; |
| 178 | |
| 179 | // Special case where the argument is a template id. |
| 180 | if (Attr.getParameterName()) { |
John McCall | f7a1a74 | 2009-11-24 19:00:30 +0000 | [diff] [blame] | 181 | CXXScopeSpec SS; |
| 182 | UnqualifiedId id; |
| 183 | id.setIdentifier(Attr.getParameterName(), Attr.getLoc()); |
| 184 | sizeExpr = S.ActOnIdExpression(scope, SS, id, false, false).takeAs<Expr>(); |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 185 | } else { |
| 186 | // check the attribute arguments. |
| 187 | if (Attr.getNumArgs() != 1) { |
| 188 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 189 | return; |
| 190 | } |
| 191 | sizeExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 192 | } |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 193 | |
| 194 | // Instantiate/Install the vector type, and let Sema build the type for us. |
| 195 | // This will run the reguired checks. |
| 196 | QualType T = S.BuildExtVectorType(curType, S.Owned(sizeExpr), Attr.getLoc()); |
| 197 | if (!T.isNull()) { |
John McCall | ba6a9bd | 2009-10-24 08:00:42 +0000 | [diff] [blame] | 198 | // FIXME: preserve the old source info. |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 199 | tDecl->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(T)); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 200 | |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 201 | // Remember this typedef decl, we will need it later for diagnostics. |
| 202 | S.ExtVectorDecls.push_back(tDecl); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 203 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 204 | } |
| 205 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 206 | static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 207 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 208 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 209 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 210 | return; |
| 211 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 212 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 213 | if (TagDecl *TD = dyn_cast<TagDecl>(d)) |
Anders Carlsson | a860e75 | 2009-08-08 18:23:56 +0000 | [diff] [blame] | 214 | TD->addAttr(::new (S.Context) PackedAttr); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 215 | else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) { |
| 216 | // If the alignment is less than or equal to 8 bits, the packed attribute |
| 217 | // has no effect. |
| 218 | if (!FD->getType()->isIncompleteType() && |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 219 | S.Context.getTypeAlign(FD->getType()) <= 8) |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 220 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type) |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 221 | << Attr.getName() << FD->getType(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 222 | else |
Anders Carlsson | a860e75 | 2009-08-08 18:23:56 +0000 | [diff] [blame] | 223 | FD->addAttr(::new (S.Context) PackedAttr); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 224 | } else |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 225 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 226 | } |
| 227 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 228 | static void HandleIBOutletAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 229 | // check the attribute arguments. |
| 230 | if (Attr.getNumArgs() > 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 231 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 232 | return; |
| 233 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 234 | |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 235 | // The IBOutlet attribute only applies to instance variables of Objective-C |
| 236 | // classes. |
Ted Kremenek | 3274260 | 2009-02-17 22:20:20 +0000 | [diff] [blame] | 237 | if (isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d)) |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 238 | d->addAttr(::new (S.Context) IBOutletAttr()); |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 239 | else |
Ted Kremenek | 3274260 | 2009-02-17 22:20:20 +0000 | [diff] [blame] | 240 | S.Diag(Attr.getLoc(), diag::err_attribute_iboutlet); |
Ted Kremenek | 96329d4 | 2008-07-15 22:26:48 +0000 | [diff] [blame] | 241 | } |
| 242 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 243 | static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 244 | // GCC ignores the nonnull attribute on K&R style function prototypes, so we |
| 245 | // ignore it as well |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 246 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 247 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 248 | << Attr.getName() << 0 /*function*/; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 249 | return; |
| 250 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 251 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 252 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 253 | |
| 254 | // The nonnull attribute only applies to pointers. |
| 255 | llvm::SmallVector<unsigned, 10> NonNullArgs; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 256 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 257 | for (AttributeList::arg_iterator I=Attr.arg_begin(), |
| 258 | E=Attr.arg_end(); I!=E; ++I) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 259 | |
| 260 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 261 | // The argument must be an integer constant expression. |
Ted Kremenek | f5e8834 | 2008-12-04 19:38:33 +0000 | [diff] [blame] | 262 | Expr *Ex = static_cast<Expr *>(*I); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 263 | llvm::APSInt ArgNum(32); |
| 264 | if (!Ex->isIntegerConstantExpr(ArgNum, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 265 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 266 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 267 | return; |
| 268 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 269 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 270 | unsigned x = (unsigned) ArgNum.getZExtValue(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 271 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 272 | if (x < 1 || x > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 273 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 30bc965 | 2008-11-19 07:22:31 +0000 | [diff] [blame] | 274 | << "nonnull" << I.getArgNum() << Ex->getSourceRange(); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 275 | return; |
| 276 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 277 | |
Ted Kremenek | 465172f | 2008-07-21 22:09:15 +0000 | [diff] [blame] | 278 | --x; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 279 | |
| 280 | // Is the function argument a pointer type? |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 281 | QualType T = getFunctionOrMethodArgType(d, x); |
Ted Kremenek | dbfe99e | 2009-07-15 23:23:54 +0000 | [diff] [blame] | 282 | if (!T->isAnyPointerType() && !T->isBlockPointerType()) { |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 283 | // FIXME: Should also highlight argument in decl. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 284 | S.Diag(Attr.getLoc(), diag::err_nonnull_pointers_only) |
| 285 | << "nonnull" << Ex->getSourceRange(); |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 286 | continue; |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 287 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 288 | |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 289 | NonNullArgs.push_back(x); |
| 290 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 291 | |
| 292 | // If no arguments were specified to __attribute__((nonnull)) then all pointer |
| 293 | // arguments have a nonnull attribute. |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 294 | if (NonNullArgs.empty()) { |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 295 | for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) { |
| 296 | QualType T = getFunctionOrMethodArgType(d, I); |
Ted Kremenek | dbfe99e | 2009-07-15 23:23:54 +0000 | [diff] [blame] | 297 | if (T->isAnyPointerType() || T->isBlockPointerType()) |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 298 | NonNullArgs.push_back(I); |
Ted Kremenek | 46bbaca | 2008-11-18 06:52:58 +0000 | [diff] [blame] | 299 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 300 | |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 301 | if (NonNullArgs.empty()) { |
| 302 | S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers); |
| 303 | return; |
| 304 | } |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 305 | } |
Ted Kremenek | 7fb43c1 | 2008-09-01 19:57:52 +0000 | [diff] [blame] | 306 | |
| 307 | unsigned* start = &NonNullArgs[0]; |
| 308 | unsigned size = NonNullArgs.size(); |
| 309 | std::sort(start, start + size); |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 310 | d->addAttr(::new (S.Context) NonNullAttr(start, size)); |
Ted Kremenek | eb2b2a3 | 2008-07-21 21:53:04 +0000 | [diff] [blame] | 311 | } |
| 312 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 313 | static void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 314 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 315 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 316 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 317 | return; |
| 318 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 319 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 320 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 321 | Arg = Arg->IgnoreParenCasts(); |
| 322 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 323 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 324 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 325 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 326 | << "alias" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 327 | return; |
| 328 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 329 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 330 | // FIXME: check if target symbol exists in current file |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 331 | |
Benjamin Kramer | bb377ed | 2009-11-30 17:08:26 +0000 | [diff] [blame] | 332 | d->addAttr(::new (S.Context) AliasAttr(Str->getString())); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 333 | } |
| 334 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 335 | static void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr, |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 336 | Sema &S) { |
| 337 | // check the attribute arguments. |
| 338 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 339 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 340 | return; |
| 341 | } |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 342 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 343 | if (!isa<FunctionDecl>(d)) { |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 344 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 345 | << Attr.getName() << 0 /*function*/; |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 346 | return; |
| 347 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 348 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 349 | d->addAttr(::new (S.Context) AlwaysInlineAttr()); |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 350 | } |
| 351 | |
Ryan Flynn | 76168e2 | 2009-08-09 20:07:29 +0000 | [diff] [blame] | 352 | static void HandleMallocAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 353 | // check the attribute arguments. |
| 354 | if (Attr.getNumArgs() != 0) { |
| 355 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 356 | return; |
| 357 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 358 | |
Ted Kremenek | 2cff7d1 | 2009-08-15 00:51:46 +0000 | [diff] [blame] | 359 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 360 | QualType RetTy = FD->getResultType(); |
Ted Kremenek | 2cff7d1 | 2009-08-15 00:51:46 +0000 | [diff] [blame] | 361 | if (RetTy->isAnyPointerType() || RetTy->isBlockPointerType()) { |
| 362 | d->addAttr(::new (S.Context) MallocAttr()); |
| 363 | return; |
| 364 | } |
Ryan Flynn | 76168e2 | 2009-08-09 20:07:29 +0000 | [diff] [blame] | 365 | } |
| 366 | |
Ted Kremenek | 2cff7d1 | 2009-08-15 00:51:46 +0000 | [diff] [blame] | 367 | S.Diag(Attr.getLoc(), diag::warn_attribute_malloc_pointer_only); |
Ryan Flynn | 76168e2 | 2009-08-09 20:07:29 +0000 | [diff] [blame] | 368 | } |
| 369 | |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 370 | static bool HandleCommonNoReturnAttr(Decl *d, const AttributeList &Attr, |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 371 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 372 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 373 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 374 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 375 | return false; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 376 | } |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 377 | |
Mike Stump | 19c30c0 | 2009-04-29 19:03:13 +0000 | [diff] [blame] | 378 | if (!isFunctionOrMethod(d) && !isa<BlockDecl>(d)) { |
| 379 | ValueDecl *VD = dyn_cast<ValueDecl>(d); |
Mike Stump | 3ee7764 | 2009-12-15 03:11:10 +0000 | [diff] [blame] | 380 | if (VD == 0 || (!VD->getType()->isBlockPointerType() |
| 381 | && !VD->getType()->isFunctionPointerType())) { |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 382 | S.Diag(Attr.getLoc(), |
| 383 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 384 | : diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 385 | << Attr.getName() << 0 /*function*/; |
Mike Stump | 19c30c0 | 2009-04-29 19:03:13 +0000 | [diff] [blame] | 386 | return false; |
| 387 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 388 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 389 | |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 390 | return true; |
| 391 | } |
| 392 | |
| 393 | static void HandleNoReturnAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 394 | if (HandleCommonNoReturnAttr(d, Attr, S)) |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 395 | d->addAttr(::new (S.Context) NoReturnAttr()); |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 396 | } |
| 397 | |
| 398 | static void HandleAnalyzerNoReturnAttr(Decl *d, const AttributeList &Attr, |
| 399 | Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 400 | if (HandleCommonNoReturnAttr(d, Attr, S)) |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 401 | d->addAttr(::new (S.Context) AnalyzerNoReturnAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 402 | } |
| 403 | |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 404 | static void HandleDependencyAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 405 | if (!isFunctionOrMethod(d) && !isa<ParmVarDecl>(d)) { |
| 406 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type) |
| 407 | << Attr.getName() << 8; /*function, method, or parameter*/ |
| 408 | return; |
| 409 | } |
| 410 | // FIXME: Actually store the attribute on the declaration |
| 411 | } |
| 412 | |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 413 | static void HandleUnusedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 414 | // check the attribute arguments. |
| 415 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 416 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 417 | return; |
| 418 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 419 | |
Daniel Dunbar | d3f2c10 | 2008-10-19 02:04:16 +0000 | [diff] [blame] | 420 | if (!isa<VarDecl>(d) && !isFunctionOrMethod(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 421 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 422 | << Attr.getName() << 2 /*variable and function*/; |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 423 | return; |
| 424 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 425 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 426 | d->addAttr(::new (S.Context) UnusedAttr()); |
Ted Kremenek | 7379889 | 2008-07-25 04:39:19 +0000 | [diff] [blame] | 427 | } |
| 428 | |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 429 | static void HandleUsedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 430 | // check the attribute arguments. |
| 431 | if (Attr.getNumArgs() != 0) { |
| 432 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 433 | return; |
| 434 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 435 | |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 436 | if (const VarDecl *VD = dyn_cast<VarDecl>(d)) { |
Daniel Dunbar | 186204b | 2009-02-13 22:48:56 +0000 | [diff] [blame] | 437 | if (VD->hasLocalStorage() || VD->hasExternalStorage()) { |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 438 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "used"; |
| 439 | return; |
| 440 | } |
| 441 | } else if (!isFunctionOrMethod(d)) { |
| 442 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 443 | << Attr.getName() << 2 /*variable and function*/; |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 444 | return; |
| 445 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 446 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 447 | d->addAttr(::new (S.Context) UsedAttr()); |
Daniel Dunbar | b805dad | 2009-02-13 19:23:53 +0000 | [diff] [blame] | 448 | } |
| 449 | |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 450 | static void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 451 | // check the attribute arguments. |
| 452 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 453 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 454 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 455 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 456 | } |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 457 | |
| 458 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 459 | if (Attr.getNumArgs() > 0) { |
| 460 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 461 | llvm::APSInt Idx(32); |
| 462 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 463 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 464 | << "constructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 465 | return; |
| 466 | } |
| 467 | priority = Idx.getZExtValue(); |
| 468 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 469 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 470 | if (!isa<FunctionDecl>(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 471 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 472 | << Attr.getName() << 0 /*function*/; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 473 | return; |
| 474 | } |
| 475 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 476 | d->addAttr(::new (S.Context) ConstructorAttr(priority)); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | static void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 480 | // check the attribute arguments. |
| 481 | if (Attr.getNumArgs() != 0 && Attr.getNumArgs() != 1) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 482 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 483 | << "0 or 1"; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 484 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 485 | } |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 486 | |
| 487 | int priority = 65535; // FIXME: Do not hardcode such constants. |
| 488 | if (Attr.getNumArgs() > 0) { |
| 489 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 490 | llvm::APSInt Idx(32); |
| 491 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 492 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 493 | << "destructor" << 1 << E->getSourceRange(); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 494 | return; |
| 495 | } |
| 496 | priority = Idx.getZExtValue(); |
| 497 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 498 | |
Anders Carlsson | 6782fc6 | 2008-08-22 22:10:48 +0000 | [diff] [blame] | 499 | if (!isa<FunctionDecl>(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 500 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 501 | << Attr.getName() << 0 /*function*/; |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 502 | return; |
| 503 | } |
| 504 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 505 | d->addAttr(::new (S.Context) DestructorAttr(priority)); |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 506 | } |
| 507 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 508 | static void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 509 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 510 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 511 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 512 | return; |
| 513 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 514 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 515 | d->addAttr(::new (S.Context) DeprecatedAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 516 | } |
| 517 | |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 518 | static void HandleUnavailableAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 519 | // check the attribute arguments. |
| 520 | if (Attr.getNumArgs() != 0) { |
| 521 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 522 | return; |
| 523 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 524 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 525 | d->addAttr(::new (S.Context) UnavailableAttr()); |
Fariborz Jahanian | bc1c877 | 2008-12-17 01:07:27 +0000 | [diff] [blame] | 526 | } |
| 527 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 528 | static void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 529 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 530 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 531 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 532 | return; |
| 533 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 534 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 535 | Expr *Arg = static_cast<Expr*>(Attr.getArg(0)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 536 | Arg = Arg->IgnoreParenCasts(); |
| 537 | StringLiteral *Str = dyn_cast<StringLiteral>(Arg); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 538 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 539 | if (Str == 0 || Str->isWide()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 540 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 541 | << "visibility" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 542 | return; |
| 543 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 544 | |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 545 | llvm::StringRef TypeStr = Str->getString(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 546 | VisibilityAttr::VisibilityTypes type; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 547 | |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 548 | if (TypeStr == "default") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 549 | type = VisibilityAttr::DefaultVisibility; |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 550 | else if (TypeStr == "hidden") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 551 | type = VisibilityAttr::HiddenVisibility; |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 552 | else if (TypeStr == "internal") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 553 | type = VisibilityAttr::HiddenVisibility; // FIXME |
Benjamin Kramer | c96f494 | 2010-01-23 18:16:35 +0000 | [diff] [blame] | 554 | else if (TypeStr == "protected") |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 555 | type = VisibilityAttr::ProtectedVisibility; |
| 556 | else { |
Chris Lattner | 08631c5 | 2008-11-23 21:45:46 +0000 | [diff] [blame] | 557 | S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 558 | return; |
| 559 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 560 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 561 | d->addAttr(::new (S.Context) VisibilityAttr(type)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 562 | } |
| 563 | |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 564 | static void HandleObjCExceptionAttr(Decl *D, const AttributeList &Attr, |
| 565 | Sema &S) { |
| 566 | if (Attr.getNumArgs() != 0) { |
| 567 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 568 | return; |
| 569 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 570 | |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 571 | ObjCInterfaceDecl *OCI = dyn_cast<ObjCInterfaceDecl>(D); |
| 572 | if (OCI == 0) { |
| 573 | S.Diag(Attr.getLoc(), diag::err_attribute_requires_objc_interface); |
| 574 | return; |
| 575 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 576 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 577 | D->addAttr(::new (S.Context) ObjCExceptionAttr()); |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 578 | } |
| 579 | |
| 580 | static void HandleObjCNSObject(Decl *D, const AttributeList &Attr, Sema &S) { |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 581 | if (Attr.getNumArgs() != 0) { |
| 582 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 583 | return; |
| 584 | } |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 585 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 586 | QualType T = TD->getUnderlyingType(); |
| 587 | if (!T->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 588 | !T->getAs<PointerType>()->getPointeeType()->isRecordType()) { |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 589 | S.Diag(TD->getLocation(), diag::err_nsobject_attribute); |
| 590 | return; |
| 591 | } |
| 592 | } |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 593 | D->addAttr(::new (S.Context) ObjCNSObjectAttr()); |
Fariborz Jahanian | fa23c1d | 2009-01-13 23:34:40 +0000 | [diff] [blame] | 594 | } |
| 595 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 596 | static void |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 597 | HandleOverloadableAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
| 598 | if (Attr.getNumArgs() != 0) { |
| 599 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 600 | return; |
| 601 | } |
| 602 | |
| 603 | if (!isa<FunctionDecl>(D)) { |
| 604 | S.Diag(Attr.getLoc(), diag::err_attribute_overloadable_not_function); |
| 605 | return; |
| 606 | } |
| 607 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 608 | D->addAttr(::new (S.Context) OverloadableAttr()); |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 609 | } |
| 610 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 611 | static void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 612 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 613 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 614 | << "blocks" << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 615 | return; |
| 616 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 617 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 618 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 619 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 620 | return; |
| 621 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 622 | |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 623 | BlocksAttr::BlocksAttrTypes type; |
Chris Lattner | 92e62b0 | 2008-11-20 04:42:34 +0000 | [diff] [blame] | 624 | if (Attr.getParameterName()->isStr("byref")) |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 625 | type = BlocksAttr::ByRef; |
| 626 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 627 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 628 | << "blocks" << Attr.getParameterName(); |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 629 | return; |
| 630 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 631 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 632 | d->addAttr(::new (S.Context) BlocksAttr(type)); |
Steve Naroff | 9eae576 | 2008-09-18 16:44:58 +0000 | [diff] [blame] | 633 | } |
| 634 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 635 | static void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 636 | // check the attribute arguments. |
| 637 | if (Attr.getNumArgs() > 2) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 638 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) |
| 639 | << "0, 1 or 2"; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 640 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 641 | } |
| 642 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 643 | int sentinel = 0; |
| 644 | if (Attr.getNumArgs() > 0) { |
| 645 | Expr *E = static_cast<Expr *>(Attr.getArg(0)); |
| 646 | llvm::APSInt Idx(32); |
| 647 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 648 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 649 | << "sentinel" << 1 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 650 | return; |
| 651 | } |
| 652 | sentinel = Idx.getZExtValue(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 653 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 654 | if (sentinel < 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 655 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero) |
| 656 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 657 | return; |
| 658 | } |
| 659 | } |
| 660 | |
| 661 | int nullPos = 0; |
| 662 | if (Attr.getNumArgs() > 1) { |
| 663 | Expr *E = static_cast<Expr *>(Attr.getArg(1)); |
| 664 | llvm::APSInt Idx(32); |
| 665 | if (!E->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 666 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 667 | << "sentinel" << 2 << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 668 | return; |
| 669 | } |
| 670 | nullPos = Idx.getZExtValue(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 671 | |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 672 | if (nullPos > 1 || nullPos < 0) { |
| 673 | // FIXME: This error message could be improved, it would be nice |
| 674 | // to say what the bounds actually are. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 675 | S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one) |
| 676 | << E->getSourceRange(); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 677 | return; |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) { |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 682 | const FunctionType *FT = FD->getType()->getAs<FunctionType>(); |
Chris Lattner | 897cd90 | 2009-03-17 23:03:47 +0000 | [diff] [blame] | 683 | assert(FT && "FunctionDecl has non-function type?"); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 684 | |
Chris Lattner | 897cd90 | 2009-03-17 23:03:47 +0000 | [diff] [blame] | 685 | if (isa<FunctionNoProtoType>(FT)) { |
| 686 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_named_arguments); |
| 687 | return; |
| 688 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 689 | |
Chris Lattner | 897cd90 | 2009-03-17 23:03:47 +0000 | [diff] [blame] | 690 | if (!cast<FunctionProtoType>(FT)->isVariadic()) { |
Fariborz Jahanian | 3bba33d | 2009-05-15 21:18:04 +0000 | [diff] [blame] | 691 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 692 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 693 | } |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 694 | } else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) { |
| 695 | if (!MD->isVariadic()) { |
Fariborz Jahanian | 3bba33d | 2009-05-15 21:18:04 +0000 | [diff] [blame] | 696 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 697 | return; |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 698 | } |
| 699 | } else if (isa<BlockDecl>(d)) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 700 | // Note! BlockDecl is typeless. Variadic diagnostics will be issued by the |
| 701 | // caller. |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 702 | ; |
| 703 | } else if (const VarDecl *V = dyn_cast<VarDecl>(d)) { |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 704 | QualType Ty = V->getType(); |
Fariborz Jahanian | daf0415 | 2009-05-15 20:33:25 +0000 | [diff] [blame] | 705 | if (Ty->isBlockPointerType() || Ty->isFunctionPointerType()) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 706 | const FunctionType *FT = Ty->isFunctionPointerType() ? getFunctionType(d) |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 707 | : Ty->getAs<BlockPointerType>()->getPointeeType()->getAs<FunctionType>(); |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 708 | if (!cast<FunctionProtoType>(FT)->isVariadic()) { |
Fariborz Jahanian | 3bba33d | 2009-05-15 21:18:04 +0000 | [diff] [blame] | 709 | int m = Ty->isFunctionPointerType() ? 0 : 1; |
| 710 | S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << m; |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 711 | return; |
| 712 | } |
Mike Stump | ac5fc7c | 2009-08-04 21:02:39 +0000 | [diff] [blame] | 713 | } else { |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 714 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Fariborz Jahanian | ffb0081 | 2009-05-14 20:57:28 +0000 | [diff] [blame] | 715 | << Attr.getName() << 6 /*function, method or block */; |
Fariborz Jahanian | 2f7c392 | 2009-05-14 20:53:39 +0000 | [diff] [blame] | 716 | return; |
| 717 | } |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 718 | } else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 719 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Fariborz Jahanian | ffb0081 | 2009-05-14 20:57:28 +0000 | [diff] [blame] | 720 | << Attr.getName() << 6 /*function, method or block */; |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 721 | return; |
| 722 | } |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 723 | d->addAttr(::new (S.Context) SentinelAttr(sentinel, nullPos)); |
Anders Carlsson | 7709182 | 2008-10-05 18:05:59 +0000 | [diff] [blame] | 724 | } |
| 725 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 726 | static void HandleWarnUnusedResult(Decl *D, const AttributeList &Attr, Sema &S) { |
| 727 | // check the attribute arguments. |
| 728 | if (Attr.getNumArgs() != 0) { |
| 729 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 730 | return; |
| 731 | } |
| 732 | |
Nuno Lopes | d20254f | 2009-12-20 23:11:08 +0000 | [diff] [blame] | 733 | if (!isFunctionOrMethod(D)) { |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 734 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 735 | << Attr.getName() << 0 /*function*/; |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 736 | return; |
| 737 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 738 | |
Nuno Lopes | f857798 | 2009-12-22 23:59:52 +0000 | [diff] [blame] | 739 | if (getFunctionType(D)->getResultType()->isVoidType()) { |
| 740 | S.Diag(Attr.getLoc(), diag::warn_attribute_void_function) |
| 741 | << Attr.getName(); |
| 742 | return; |
| 743 | } |
| 744 | |
Nuno Lopes | d20254f | 2009-12-20 23:11:08 +0000 | [diff] [blame] | 745 | D->addAttr(::new (S.Context) WarnUnusedResultAttr()); |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | static void HandleWeakAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 749 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 750 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 751 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 752 | return; |
| 753 | } |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 754 | |
Fariborz Jahanian | f23ecd9 | 2009-07-16 01:12:24 +0000 | [diff] [blame] | 755 | /* weak only applies to non-static declarations */ |
| 756 | bool isStatic = false; |
| 757 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { |
| 758 | isStatic = VD->getStorageClass() == VarDecl::Static; |
| 759 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { |
| 760 | isStatic = FD->getStorageClass() == FunctionDecl::Static; |
| 761 | } |
| 762 | if (isStatic) { |
| 763 | S.Diag(Attr.getLoc(), diag::err_attribute_weak_static) << |
| 764 | dyn_cast<NamedDecl>(D)->getNameAsString(); |
| 765 | return; |
| 766 | } |
| 767 | |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 768 | // TODO: could also be applied to methods? |
| 769 | if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) { |
| 770 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 771 | << Attr.getName() << 2 /*variable and function*/; |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 772 | return; |
| 773 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 774 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 775 | D->addAttr(::new (S.Context) WeakAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 776 | } |
| 777 | |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 778 | static void HandleWeakImportAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
| 779 | // check the attribute arguments. |
| 780 | if (Attr.getNumArgs() != 0) { |
| 781 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 782 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 783 | } |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 784 | |
| 785 | // weak_import only applies to variable & function declarations. |
| 786 | bool isDef = false; |
| 787 | if (VarDecl *VD = dyn_cast<VarDecl>(D)) { |
| 788 | isDef = (!VD->hasExternalStorage() || VD->getInit()); |
| 789 | } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { |
Argyrios Kyrtzidis | 6fb0aee | 2009-06-30 02:35:26 +0000 | [diff] [blame] | 790 | isDef = FD->getBody(); |
Fariborz Jahanian | d4edddd | 2009-05-04 19:35:12 +0000 | [diff] [blame] | 791 | } else if (isa<ObjCPropertyDecl>(D) || isa<ObjCMethodDecl>(D)) { |
| 792 | // We ignore weak import on properties and methods |
Mike Stump | 1c90f4d | 2009-03-18 17:39:31 +0000 | [diff] [blame] | 793 | return; |
Fariborz Jahanian | 5f8f857 | 2009-11-17 19:08:08 +0000 | [diff] [blame] | 794 | } else if (!(S.LangOpts.ObjCNonFragileABI && isa<ObjCInterfaceDecl>(D))) { |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 795 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 796 | << Attr.getName() << 2 /*variable and function*/; |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 797 | return; |
| 798 | } |
| 799 | |
| 800 | // Merge should handle any subsequent violations. |
| 801 | if (isDef) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 802 | S.Diag(Attr.getLoc(), |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 803 | diag::warn_attribute_weak_import_invalid_on_definition) |
| 804 | << "weak_import" << 2 /*variable and function*/; |
| 805 | return; |
| 806 | } |
| 807 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 808 | D->addAttr(::new (S.Context) WeakImportAttr()); |
Daniel Dunbar | 6e775db | 2009-03-06 06:39:57 +0000 | [diff] [blame] | 809 | } |
| 810 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 811 | static void HandleDLLImportAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 812 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 813 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 814 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 815 | return; |
| 816 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 817 | |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 818 | // Attribute can be applied only to functions or variables. |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 819 | if (isa<VarDecl>(D)) { |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 820 | D->addAttr(::new (S.Context) DLLImportAttr()); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 821 | return; |
| 822 | } |
| 823 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 824 | FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 825 | if (!FD) { |
| 826 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 827 | << Attr.getName() << 2 /*variable and function*/; |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 828 | return; |
| 829 | } |
| 830 | |
| 831 | // Currently, the dllimport attribute is ignored for inlined functions. |
| 832 | // Warning is emitted. |
Douglas Gregor | 0130f3c | 2009-10-27 21:01:01 +0000 | [diff] [blame] | 833 | if (FD->isInlineSpecified()) { |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 834 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 835 | return; |
| 836 | } |
| 837 | |
| 838 | // The attribute is also overridden by a subsequent declaration as dllexport. |
| 839 | // Warning is emitted. |
| 840 | for (AttributeList *nextAttr = Attr.getNext(); nextAttr; |
| 841 | nextAttr = nextAttr->getNext()) { |
| 842 | if (nextAttr->getKind() == AttributeList::AT_dllexport) { |
| 843 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 844 | return; |
| 845 | } |
| 846 | } |
| 847 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 848 | if (D->getAttr<DLLExportAttr>()) { |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 849 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllimport"; |
| 850 | return; |
| 851 | } |
| 852 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 853 | D->addAttr(::new (S.Context) DLLImportAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 854 | } |
| 855 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 856 | static void HandleDLLExportAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 857 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 858 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 859 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 860 | return; |
| 861 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 862 | |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 863 | // Attribute can be applied only to functions or variables. |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 864 | if (isa<VarDecl>(D)) { |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 865 | D->addAttr(::new (S.Context) DLLExportAttr()); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 866 | return; |
| 867 | } |
| 868 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 869 | FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 870 | if (!FD) { |
| 871 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 872 | << Attr.getName() << 2 /*variable and function*/; |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 873 | return; |
| 874 | } |
| 875 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 876 | // Currently, the dllexport attribute is ignored for inlined functions, unless |
| 877 | // the -fkeep-inline-functions flag has been used. Warning is emitted; |
Douglas Gregor | 0130f3c | 2009-10-27 21:01:01 +0000 | [diff] [blame] | 878 | if (FD->isInlineSpecified()) { |
Anton Korobeynikov | 2f40270 | 2008-12-26 00:52:02 +0000 | [diff] [blame] | 879 | // FIXME: ... unless the -fkeep-inline-functions flag has been used. |
| 880 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "dllexport"; |
| 881 | return; |
| 882 | } |
| 883 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 884 | D->addAttr(::new (S.Context) DLLExportAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 885 | } |
| 886 | |
Nate Begeman | 6f3d838 | 2009-06-26 06:32:41 +0000 | [diff] [blame] | 887 | static void HandleReqdWorkGroupSize(Decl *D, const AttributeList &Attr, |
| 888 | Sema &S) { |
| 889 | // Attribute has 3 arguments. |
| 890 | if (Attr.getNumArgs() != 3) { |
| 891 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 892 | return; |
| 893 | } |
| 894 | |
| 895 | unsigned WGSize[3]; |
| 896 | for (unsigned i = 0; i < 3; ++i) { |
| 897 | Expr *E = static_cast<Expr *>(Attr.getArg(i)); |
| 898 | llvm::APSInt ArgNum(32); |
| 899 | if (!E->isIntegerConstantExpr(ArgNum, S.Context)) { |
| 900 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 901 | << "reqd_work_group_size" << E->getSourceRange(); |
| 902 | return; |
| 903 | } |
| 904 | WGSize[i] = (unsigned) ArgNum.getZExtValue(); |
| 905 | } |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 906 | D->addAttr(::new (S.Context) ReqdWorkGroupSizeAttr(WGSize[0], WGSize[1], |
Nate Begeman | 6f3d838 | 2009-06-26 06:32:41 +0000 | [diff] [blame] | 907 | WGSize[2])); |
| 908 | } |
| 909 | |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 910 | static void HandleSectionAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 911 | // Attribute has no arguments. |
| 912 | if (Attr.getNumArgs() != 1) { |
| 913 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 914 | return; |
| 915 | } |
| 916 | |
| 917 | // Make sure that there is a string literal as the sections's single |
| 918 | // argument. |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 919 | Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 920 | StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 921 | if (!SE) { |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 922 | S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) << "section"; |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 923 | return; |
| 924 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 925 | |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 926 | // If the target wants to validate the section specifier, make it happen. |
Benjamin Kramer | bb377ed | 2009-11-30 17:08:26 +0000 | [diff] [blame] | 927 | std::string Error = S.Context.Target.isValidSectionSpecifier(SE->getString()); |
Chris Lattner | a1e1dc7 | 2010-01-12 20:58:53 +0000 | [diff] [blame] | 928 | if (!Error.empty()) { |
| 929 | S.Diag(SE->getLocStart(), diag::err_attribute_section_invalid_for_target) |
| 930 | << Error; |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 931 | return; |
| 932 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 933 | |
Chris Lattner | a1e1dc7 | 2010-01-12 20:58:53 +0000 | [diff] [blame] | 934 | // This attribute cannot be applied to local variables. |
| 935 | if (isa<VarDecl>(D) && cast<VarDecl>(D)->hasLocalStorage()) { |
| 936 | S.Diag(SE->getLocStart(), diag::err_attribute_section_local_variable); |
| 937 | return; |
| 938 | } |
| 939 | |
| 940 | D->addAttr(::new (S.Context) SectionAttr(SE->getString())); |
Daniel Dunbar | 17f194f | 2009-02-12 17:28:23 +0000 | [diff] [blame] | 941 | } |
| 942 | |
Eli Friedman | 8f4c59e | 2009-11-09 18:38:53 +0000 | [diff] [blame] | 943 | static void HandleCDeclAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 944 | // Attribute has no arguments. |
| 945 | if (Attr.getNumArgs() != 0) { |
| 946 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 947 | return; |
| 948 | } |
| 949 | |
| 950 | // Attribute can be applied only to functions. |
| 951 | if (!isa<FunctionDecl>(d)) { |
| 952 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 953 | << Attr.getName() << 0 /*function*/; |
| 954 | return; |
| 955 | } |
| 956 | |
| 957 | // cdecl and fastcall attributes are mutually incompatible. |
| 958 | if (d->getAttr<FastCallAttr>()) { |
| 959 | S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) |
| 960 | << "cdecl" << "fastcall"; |
| 961 | return; |
| 962 | } |
| 963 | |
| 964 | // cdecl and stdcall attributes are mutually incompatible. |
| 965 | if (d->getAttr<StdCallAttr>()) { |
| 966 | S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) |
| 967 | << "cdecl" << "stdcall"; |
| 968 | return; |
| 969 | } |
| 970 | |
| 971 | d->addAttr(::new (S.Context) CDeclAttr()); |
| 972 | } |
| 973 | |
| 974 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 975 | static void HandleStdCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 976 | // Attribute has no arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 977 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 978 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 979 | return; |
| 980 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 981 | |
| 982 | // Attribute can be applied only to functions. |
| 983 | if (!isa<FunctionDecl>(d)) { |
| 984 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 985 | << Attr.getName() << 0 /*function*/; |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 986 | return; |
| 987 | } |
| 988 | |
| 989 | // stdcall and fastcall attributes are mutually incompatible. |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 990 | if (d->getAttr<FastCallAttr>()) { |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 991 | S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) |
| 992 | << "stdcall" << "fastcall"; |
| 993 | return; |
| 994 | } |
| 995 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 996 | d->addAttr(::new (S.Context) StdCallAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 997 | } |
| 998 | |
John McCall | 9112b93 | 2009-11-04 03:36:09 +0000 | [diff] [blame] | 999 | /// Diagnose the use of a non-standard calling convention on the given |
| 1000 | /// function. |
| 1001 | static void DiagnoseCConv(FunctionDecl *D, const char *CConv, |
| 1002 | SourceLocation Loc, Sema &S) { |
| 1003 | if (!D->hasPrototype()) { |
| 1004 | S.Diag(Loc, diag::err_cconv_knr) << CConv; |
| 1005 | return; |
| 1006 | } |
| 1007 | |
| 1008 | const FunctionProtoType *T = D->getType()->getAs<FunctionProtoType>(); |
| 1009 | if (T->isVariadic()) { |
| 1010 | S.Diag(Loc, diag::err_cconv_varargs) << CConv; |
| 1011 | return; |
| 1012 | } |
| 1013 | } |
| 1014 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1015 | static void HandleFastCallAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 1016 | // Attribute has no arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1017 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1018 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1019 | return; |
| 1020 | } |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 1021 | |
| 1022 | if (!isa<FunctionDecl>(d)) { |
| 1023 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1024 | << Attr.getName() << 0 /*function*/; |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 1025 | return; |
| 1026 | } |
| 1027 | |
John McCall | 9112b93 | 2009-11-04 03:36:09 +0000 | [diff] [blame] | 1028 | DiagnoseCConv(cast<FunctionDecl>(d), "fastcall", Attr.getLoc(), S); |
| 1029 | |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 1030 | // stdcall and fastcall attributes are mutually incompatible. |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1031 | if (d->getAttr<StdCallAttr>()) { |
Anton Korobeynikov | 7b0a52f | 2008-12-23 22:24:07 +0000 | [diff] [blame] | 1032 | S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) |
| 1033 | << "fastcall" << "stdcall"; |
| 1034 | return; |
| 1035 | } |
| 1036 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1037 | d->addAttr(::new (S.Context) FastCallAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1038 | } |
| 1039 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1040 | static void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1041 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1042 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1043 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1044 | return; |
| 1045 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1046 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1047 | d->addAttr(::new (S.Context) NoThrowAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1048 | } |
| 1049 | |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1050 | static void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1051 | // check the attribute arguments. |
| 1052 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1053 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1054 | return; |
| 1055 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1056 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1057 | d->addAttr(::new (S.Context) ConstAttr()); |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1058 | } |
| 1059 | |
| 1060 | static void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1061 | // check the attribute arguments. |
| 1062 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1063 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1064 | return; |
| 1065 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1066 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1067 | d->addAttr(::new (S.Context) PureAttr()); |
Anders Carlsson | 232eb7d | 2008-10-05 23:32:53 +0000 | [diff] [blame] | 1068 | } |
| 1069 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1070 | static void HandleCleanupAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1071 | if (!Attr.getParameterName()) { |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1072 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 1073 | return; |
| 1074 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1075 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1076 | if (Attr.getNumArgs() != 0) { |
| 1077 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 1078 | return; |
| 1079 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1080 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1081 | VarDecl *VD = dyn_cast<VarDecl>(d); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1082 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1083 | if (!VD || !VD->hasLocalStorage()) { |
| 1084 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "cleanup"; |
| 1085 | return; |
| 1086 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1087 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1088 | // Look up the function |
John McCall | f36e02d | 2009-10-09 21:13:30 +0000 | [diff] [blame] | 1089 | NamedDecl *CleanupDecl |
| 1090 | = S.LookupSingleName(S.TUScope, Attr.getParameterName(), |
| 1091 | Sema::LookupOrdinaryName); |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1092 | if (!CleanupDecl) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1093 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_found) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1094 | Attr.getParameterName(); |
| 1095 | return; |
| 1096 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1097 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1098 | FunctionDecl *FD = dyn_cast<FunctionDecl>(CleanupDecl); |
| 1099 | if (!FD) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1100 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_arg_not_function) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1101 | Attr.getParameterName(); |
| 1102 | return; |
| 1103 | } |
| 1104 | |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1105 | if (FD->getNumParams() != 1) { |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1106 | S.Diag(Attr.getLoc(), diag::err_attribute_cleanup_func_must_take_one_arg) << |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1107 | Attr.getParameterName(); |
| 1108 | return; |
| 1109 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1110 | |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1111 | // We're currently more strict than GCC about what function types we accept. |
| 1112 | // If this ever proves to be a problem it should be easy to fix. |
| 1113 | QualType Ty = S.Context.getPointerType(VD->getType()); |
| 1114 | QualType ParamTy = FD->getParamDecl(0)->getType(); |
Eli Friedman | d5e3e8e | 2009-04-26 01:30:08 +0000 | [diff] [blame] | 1115 | if (S.CheckAssignmentConstraints(ParamTy, Ty) != Sema::Compatible) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1116 | S.Diag(Attr.getLoc(), |
Anders Carlsson | 89941c1 | 2009-02-07 23:16:50 +0000 | [diff] [blame] | 1117 | diag::err_attribute_cleanup_func_arg_incompatible_type) << |
| 1118 | Attr.getParameterName() << ParamTy << Ty; |
| 1119 | return; |
| 1120 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1121 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1122 | d->addAttr(::new (S.Context) CleanupAttr(FD)); |
Anders Carlsson | f6e35d0 | 2009-01-31 01:16:18 +0000 | [diff] [blame] | 1123 | } |
| 1124 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1125 | /// Handle __attribute__((format_arg((idx)))) attribute based on |
| 1126 | /// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
| 1127 | static void HandleFormatArgAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1128 | if (Attr.getNumArgs() != 1) { |
| 1129 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
| 1130 | return; |
| 1131 | } |
| 1132 | if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) { |
| 1133 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
| 1134 | << Attr.getName() << 0 /*function*/; |
| 1135 | return; |
| 1136 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1137 | // FIXME: in C++ the implicit 'this' function parameter also counts. this is |
| 1138 | // needed in order to be compatible with GCC the index must start with 1. |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1139 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
| 1140 | unsigned FirstIdx = 1; |
| 1141 | // checks for the 2nd argument |
| 1142 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1143 | llvm::APSInt Idx(32); |
| 1144 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
| 1145 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
| 1146 | << "format" << 2 << IdxExpr->getSourceRange(); |
| 1147 | return; |
| 1148 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1149 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1150 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
| 1151 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
| 1152 | << "format" << 2 << IdxExpr->getSourceRange(); |
| 1153 | return; |
| 1154 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1155 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1156 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1157 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1158 | // make sure the format string is really a string |
| 1159 | QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1160 | |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1161 | bool not_nsstring_type = !isNSStringType(Ty, S.Context); |
| 1162 | if (not_nsstring_type && |
| 1163 | !isCFStringType(Ty, S.Context) && |
| 1164 | (!Ty->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1165 | !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1166 | // FIXME: Should highlight the actual expression that has the wrong type. |
| 1167 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1168 | << (not_nsstring_type ? "a string type" : "an NSString") |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1169 | << IdxExpr->getSourceRange(); |
| 1170 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1171 | } |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1172 | Ty = getFunctionOrMethodResultType(d); |
| 1173 | if (!isNSStringType(Ty, S.Context) && |
| 1174 | !isCFStringType(Ty, S.Context) && |
| 1175 | (!Ty->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1176 | !Ty->getAs<PointerType>()->getPointeeType()->isCharType())) { |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1177 | // FIXME: Should highlight the actual expression that has the wrong type. |
| 1178 | S.Diag(Attr.getLoc(), diag::err_format_attribute_result_not) |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1179 | << (not_nsstring_type ? "string type" : "NSString") |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1180 | << IdxExpr->getSourceRange(); |
| 1181 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1182 | } |
| 1183 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1184 | d->addAttr(::new (S.Context) FormatArgAttr(Idx.getZExtValue())); |
Fariborz Jahanian | 5b16092 | 2009-05-20 17:41:43 +0000 | [diff] [blame] | 1185 | } |
| 1186 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1187 | enum FormatAttrKind { |
| 1188 | CFStringFormat, |
| 1189 | NSStringFormat, |
| 1190 | StrftimeFormat, |
| 1191 | SupportedFormat, |
| 1192 | InvalidFormat |
| 1193 | }; |
| 1194 | |
| 1195 | /// getFormatAttrKind - Map from format attribute names to supported format |
| 1196 | /// types. |
| 1197 | static FormatAttrKind getFormatAttrKind(llvm::StringRef Format) { |
| 1198 | // Check for formats that get handled specially. |
| 1199 | if (Format == "NSString") |
| 1200 | return NSStringFormat; |
| 1201 | if (Format == "CFString") |
| 1202 | return CFStringFormat; |
| 1203 | if (Format == "strftime") |
| 1204 | return StrftimeFormat; |
| 1205 | |
| 1206 | // Otherwise, check for supported formats. |
| 1207 | if (Format == "scanf" || Format == "printf" || Format == "printf0" || |
| 1208 | Format == "strfmon" || Format == "cmn_err" || Format == "strftime" || |
| 1209 | Format == "NSString" || Format == "CFString" || Format == "vcmn_err" || |
| 1210 | Format == "zcmn_err") |
| 1211 | return SupportedFormat; |
| 1212 | |
| 1213 | return InvalidFormat; |
| 1214 | } |
| 1215 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1216 | /// Handle __attribute__((format(type,idx,firstarg))) attributes based on |
| 1217 | /// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1218 | static void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1219 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1220 | if (!Attr.getParameterName()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1221 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1222 | << "format" << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1223 | return; |
| 1224 | } |
| 1225 | |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1226 | if (Attr.getNumArgs() != 2) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1227 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1228 | return; |
| 1229 | } |
| 1230 | |
Fariborz Jahanian | 620d89c | 2009-05-15 23:15:03 +0000 | [diff] [blame] | 1231 | if (!isFunctionOrMethodOrBlock(d) || !hasFunctionProto(d)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1232 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1233 | << Attr.getName() << 0 /*function*/; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1234 | return; |
| 1235 | } |
| 1236 | |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1237 | unsigned NumArgs = getFunctionOrMethodNumArgs(d); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1238 | unsigned FirstIdx = 1; |
| 1239 | |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 1240 | llvm::StringRef Format = Attr.getParameterName()->getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1241 | |
| 1242 | // Normalize the argument, __foo__ becomes foo. |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1243 | if (Format.startswith("__") && Format.endswith("__")) |
| 1244 | Format = Format.substr(2, Format.size() - 4); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1245 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1246 | // Check for supported formats. |
| 1247 | FormatAttrKind Kind = getFormatAttrKind(Format); |
| 1248 | if (Kind == InvalidFormat) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1249 | S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported) |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 1250 | << "format" << Attr.getParameterName()->getName(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1251 | return; |
| 1252 | } |
| 1253 | |
| 1254 | // checks for the 2nd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1255 | Expr *IdxExpr = static_cast<Expr *>(Attr.getArg(0)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1256 | llvm::APSInt Idx(32); |
| 1257 | if (!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1258 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1259 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1260 | return; |
| 1261 | } |
| 1262 | |
Anders Carlsson | 4fb7720 | 2009-08-25 14:12:34 +0000 | [diff] [blame] | 1263 | // FIXME: We should handle the implicit 'this' parameter in a more generic |
| 1264 | // way that can be used for other arguments. |
| 1265 | bool HasImplicitThisParam = false; |
| 1266 | if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(d)) { |
| 1267 | if (MD->isInstance()) { |
| 1268 | HasImplicitThisParam = true; |
| 1269 | NumArgs++; |
| 1270 | } |
| 1271 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1272 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1273 | if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1274 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1275 | << "format" << 2 << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1276 | return; |
| 1277 | } |
| 1278 | |
| 1279 | // FIXME: Do we need to bounds check? |
| 1280 | unsigned ArgIdx = Idx.getZExtValue() - 1; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1281 | |
Sebastian Redl | 4a2614e | 2009-11-17 18:02:24 +0000 | [diff] [blame] | 1282 | if (HasImplicitThisParam) { |
| 1283 | if (ArgIdx == 0) { |
| 1284 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1285 | << "a string type" << IdxExpr->getSourceRange(); |
| 1286 | return; |
| 1287 | } |
| 1288 | ArgIdx--; |
| 1289 | } |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1290 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1291 | // make sure the format string is really a string |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1292 | QualType Ty = getFunctionOrMethodArgType(d, ArgIdx); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1293 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1294 | if (Kind == CFStringFormat) { |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1295 | if (!isCFStringType(Ty, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1296 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1297 | << "a CFString" << IdxExpr->getSourceRange(); |
Daniel Dunbar | 085e8f7 | 2008-09-26 03:32:58 +0000 | [diff] [blame] | 1298 | return; |
| 1299 | } |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1300 | } else if (Kind == NSStringFormat) { |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1301 | // FIXME: do we need to check if the type is NSString*? What are the |
| 1302 | // semantics? |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1303 | if (!isNSStringType(Ty, S.Context)) { |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1304 | // FIXME: Should highlight the actual expression that has the wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1305 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1306 | << "an NSString" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1307 | return; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1308 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1309 | } else if (!Ty->isPointerType() || |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1310 | !Ty->getAs<PointerType>()->getPointeeType()->isCharType()) { |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1311 | // FIXME: Should highlight the actual expression that has the wrong type. |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1312 | S.Diag(Attr.getLoc(), diag::err_format_attribute_not) |
| 1313 | << "a string type" << IdxExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1314 | return; |
| 1315 | } |
| 1316 | |
| 1317 | // check the 3rd argument |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1318 | Expr *FirstArgExpr = static_cast<Expr *>(Attr.getArg(1)); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1319 | llvm::APSInt FirstArg(32); |
| 1320 | if (!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1321 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1322 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1323 | return; |
| 1324 | } |
| 1325 | |
| 1326 | // check if the function is variadic if the 3rd argument non-zero |
| 1327 | if (FirstArg != 0) { |
Daniel Dunbar | 3568249 | 2008-09-26 04:12:28 +0000 | [diff] [blame] | 1328 | if (isFunctionOrMethodVariadic(d)) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1329 | ++NumArgs; // +1 for ... |
| 1330 | } else { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1331 | S.Diag(d->getLocation(), diag::err_format_attribute_requires_variadic); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1332 | return; |
| 1333 | } |
| 1334 | } |
| 1335 | |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1336 | // strftime requires FirstArg to be 0 because it doesn't read from any |
| 1337 | // variable the input is just the current time + the format string. |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1338 | if (Kind == StrftimeFormat) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1339 | if (FirstArg != 0) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1340 | S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter) |
| 1341 | << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1342 | return; |
| 1343 | } |
| 1344 | // if 0 it disables parameter checking (to use with e.g. va_list) |
| 1345 | } else if (FirstArg != 0 && FirstArg != NumArgs) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1346 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds) |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1347 | << "format" << 3 << FirstArgExpr->getSourceRange(); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1348 | return; |
| 1349 | } |
| 1350 | |
Daniel Dunbar | 2b0d9a2 | 2009-10-18 02:09:17 +0000 | [diff] [blame] | 1351 | d->addAttr(::new (S.Context) FormatAttr(Format, Idx.getZExtValue(), |
| 1352 | FirstArg.getZExtValue())); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1353 | } |
| 1354 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1355 | static void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr, |
| 1356 | Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1357 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1358 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1359 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1360 | return; |
| 1361 | } |
| 1362 | |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1363 | // Try to find the underlying union declaration. |
| 1364 | RecordDecl *RD = 0; |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1365 | TypedefDecl *TD = dyn_cast<TypedefDecl>(d); |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1366 | if (TD && TD->getUnderlyingType()->isUnionType()) |
| 1367 | RD = TD->getUnderlyingType()->getAsUnionType()->getDecl(); |
| 1368 | else |
| 1369 | RD = dyn_cast<RecordDecl>(d); |
| 1370 | |
| 1371 | if (!RD || !RD->isUnion()) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1372 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1373 | << Attr.getName() << 1 /*union*/; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1374 | return; |
| 1375 | } |
| 1376 | |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1377 | if (!RD->isDefinition()) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1378 | S.Diag(Attr.getLoc(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1379 | diag::warn_transparent_union_attribute_not_definition); |
| 1380 | return; |
| 1381 | } |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1382 | |
Argyrios Kyrtzidis | 17945a0 | 2009-06-30 02:36:12 +0000 | [diff] [blame] | 1383 | RecordDecl::field_iterator Field = RD->field_begin(), |
| 1384 | FieldEnd = RD->field_end(); |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1385 | if (Field == FieldEnd) { |
| 1386 | S.Diag(Attr.getLoc(), diag::warn_transparent_union_attribute_zero_fields); |
| 1387 | return; |
| 1388 | } |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1389 | |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1390 | FieldDecl *FirstField = *Field; |
| 1391 | QualType FirstType = FirstField->getType(); |
| 1392 | if (FirstType->isFloatingType() || FirstType->isVectorType()) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1393 | S.Diag(FirstField->getLocation(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1394 | diag::warn_transparent_union_attribute_floating); |
| 1395 | return; |
| 1396 | } |
| 1397 | |
| 1398 | uint64_t FirstSize = S.Context.getTypeSize(FirstType); |
| 1399 | uint64_t FirstAlign = S.Context.getTypeAlign(FirstType); |
| 1400 | for (; Field != FieldEnd; ++Field) { |
| 1401 | QualType FieldType = Field->getType(); |
| 1402 | if (S.Context.getTypeSize(FieldType) != FirstSize || |
| 1403 | S.Context.getTypeAlign(FieldType) != FirstAlign) { |
| 1404 | // Warn if we drop the attribute. |
| 1405 | bool isSize = S.Context.getTypeSize(FieldType) != FirstSize; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1406 | unsigned FieldBits = isSize? S.Context.getTypeSize(FieldType) |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1407 | : S.Context.getTypeAlign(FieldType); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1408 | S.Diag(Field->getLocation(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1409 | diag::warn_transparent_union_attribute_field_size_align) |
| 1410 | << isSize << Field->getDeclName() << FieldBits; |
| 1411 | unsigned FirstBits = isSize? FirstSize : FirstAlign; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1412 | S.Diag(FirstField->getLocation(), |
Douglas Gregor | 0c74e8a | 2009-04-29 22:16:16 +0000 | [diff] [blame] | 1413 | diag::note_transparent_union_first_field_size_align) |
| 1414 | << isSize << FirstBits; |
Eli Friedman | bc88745 | 2008-09-02 05:19:23 +0000 | [diff] [blame] | 1415 | return; |
| 1416 | } |
| 1417 | } |
| 1418 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1419 | RD->addAttr(::new (S.Context) TransparentUnionAttr()); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1420 | } |
| 1421 | |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1422 | static void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1423 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1424 | if (Attr.getNumArgs() != 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1425 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1426 | return; |
| 1427 | } |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 1428 | Expr *ArgExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1429 | StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1430 | |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1431 | // Make sure that there is a string literal as the annotation's single |
| 1432 | // argument. |
| 1433 | if (!SE) { |
Chris Lattner | 797c3c4 | 2009-08-10 19:03:04 +0000 | [diff] [blame] | 1434 | S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) <<"annotate"; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1435 | return; |
| 1436 | } |
Benjamin Kramer | bb377ed | 2009-11-30 17:08:26 +0000 | [diff] [blame] | 1437 | d->addAttr(::new (S.Context) AnnotateAttr(SE->getString())); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1438 | } |
| 1439 | |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1440 | static void HandleAlignedAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1441 | // check the attribute arguments. |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1442 | if (Attr.getNumArgs() > 1) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1443 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1444 | return; |
| 1445 | } |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1446 | |
| 1447 | //FIXME: The C++0x version of this attribute has more limited applicabilty |
| 1448 | // than GNU's, and should error out when it is used to specify a |
| 1449 | // weaker alignment, rather than being silently ignored. |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1450 | |
| 1451 | unsigned Align = 0; |
Chris Lattner | 545dd34 | 2008-06-28 23:36:30 +0000 | [diff] [blame] | 1452 | if (Attr.getNumArgs() == 0) { |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1453 | // FIXME: This should be the target specific maximum alignment. |
Daniel Dunbar | 7549c55 | 2009-02-18 20:06:09 +0000 | [diff] [blame] | 1454 | // (For now we just use 128 bits which is the maximum on X86). |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1455 | Align = 128; |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1456 | d->addAttr(::new (S.Context) AlignedAttr(Align)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1457 | return; |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1458 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1459 | |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 1460 | Expr *alignmentExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1461 | llvm::APSInt Alignment(32); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1462 | if (!alignmentExpr->isIntegerConstantExpr(Alignment, S.Context)) { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1463 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 1464 | << "aligned" << alignmentExpr->getSourceRange(); |
Chris Lattner | 49e2d34 | 2008-06-28 23:50:44 +0000 | [diff] [blame] | 1465 | return; |
| 1466 | } |
Daniel Dunbar | 396b2a2 | 2009-02-16 23:37:57 +0000 | [diff] [blame] | 1467 | if (!llvm::isPowerOf2_64(Alignment.getZExtValue())) { |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1468 | S.Diag(Attr.getLoc(), diag::err_attribute_aligned_not_power_of_two) |
Daniel Dunbar | 396b2a2 | 2009-02-16 23:37:57 +0000 | [diff] [blame] | 1469 | << alignmentExpr->getSourceRange(); |
| 1470 | return; |
| 1471 | } |
| 1472 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1473 | d->addAttr(::new (S.Context) AlignedAttr(Alignment.getZExtValue() * 8)); |
Chris Lattner | 6b6b537 | 2008-06-26 18:38:35 +0000 | [diff] [blame] | 1474 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1475 | |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1476 | /// HandleModeAttr - This attribute modifies the width of a decl with primitive |
| 1477 | /// type. |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1478 | /// |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1479 | /// Despite what would be logical, the mode attribute is a decl attribute, not a |
| 1480 | /// type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make 'G' be |
| 1481 | /// HImode, not an intermediate pointer. |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1482 | static void HandleModeAttr(Decl *D, const AttributeList &Attr, Sema &S) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1483 | // This attribute isn't documented, but glibc uses it. It changes |
| 1484 | // the width of an int or unsigned int to the specified size. |
| 1485 | |
| 1486 | // Check that there aren't any arguments |
| 1487 | if (Attr.getNumArgs() != 0) { |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1488 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1489 | return; |
| 1490 | } |
| 1491 | |
| 1492 | IdentifierInfo *Name = Attr.getParameterName(); |
| 1493 | if (!Name) { |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1494 | S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1495 | return; |
| 1496 | } |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1497 | |
Daniel Dunbar | 01eb9b9 | 2009-10-18 21:17:35 +0000 | [diff] [blame] | 1498 | llvm::StringRef Str = Attr.getParameterName()->getName(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1499 | |
| 1500 | // Normalize the attribute name, __foo__ becomes foo. |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1501 | if (Str.startswith("__") && Str.endswith("__")) |
| 1502 | Str = Str.substr(2, Str.size() - 4); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1503 | |
| 1504 | unsigned DestWidth = 0; |
| 1505 | bool IntegerMode = true; |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1506 | bool ComplexMode = false; |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1507 | switch (Str.size()) { |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1508 | case 2: |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1509 | switch (Str[0]) { |
| 1510 | case 'Q': DestWidth = 8; break; |
| 1511 | case 'H': DestWidth = 16; break; |
| 1512 | case 'S': DestWidth = 32; break; |
| 1513 | case 'D': DestWidth = 64; break; |
| 1514 | case 'X': DestWidth = 96; break; |
| 1515 | case 'T': DestWidth = 128; break; |
| 1516 | } |
| 1517 | if (Str[1] == 'F') { |
| 1518 | IntegerMode = false; |
| 1519 | } else if (Str[1] == 'C') { |
| 1520 | IntegerMode = false; |
| 1521 | ComplexMode = true; |
| 1522 | } else if (Str[1] != 'I') { |
| 1523 | DestWidth = 0; |
| 1524 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1525 | break; |
| 1526 | case 4: |
| 1527 | // FIXME: glibc uses 'word' to define register_t; this is narrower than a |
| 1528 | // pointer on PIC16 and other embedded platforms. |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1529 | if (Str == "word") |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1530 | DestWidth = S.Context.Target.getPointerWidth(0); |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1531 | else if (Str == "byte") |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1532 | DestWidth = S.Context.Target.getCharWidth(); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1533 | break; |
| 1534 | case 7: |
Daniel Dunbar | 210ae98 | 2009-10-18 02:09:24 +0000 | [diff] [blame] | 1535 | if (Str == "pointer") |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1536 | DestWidth = S.Context.Target.getPointerWidth(0); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1537 | break; |
| 1538 | } |
| 1539 | |
| 1540 | QualType OldTy; |
| 1541 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) |
| 1542 | OldTy = TD->getUnderlyingType(); |
| 1543 | else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) |
| 1544 | OldTy = VD->getType(); |
| 1545 | else { |
Chris Lattner | fa25bbb | 2008-11-19 05:08:23 +0000 | [diff] [blame] | 1546 | S.Diag(D->getLocation(), diag::err_attr_wrong_decl) |
| 1547 | << "mode" << SourceRange(Attr.getLoc(), Attr.getLoc()); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1548 | return; |
| 1549 | } |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1550 | |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 1551 | if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType()) |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1552 | S.Diag(Attr.getLoc(), diag::err_mode_not_primitive); |
| 1553 | else if (IntegerMode) { |
| 1554 | if (!OldTy->isIntegralType()) |
| 1555 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
| 1556 | } else if (ComplexMode) { |
| 1557 | if (!OldTy->isComplexType()) |
| 1558 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
| 1559 | } else { |
| 1560 | if (!OldTy->isFloatingType()) |
| 1561 | S.Diag(Attr.getLoc(), diag::err_mode_wrong_type); |
| 1562 | } |
| 1563 | |
Mike Stump | 390b4cc | 2009-05-16 07:39:55 +0000 | [diff] [blame] | 1564 | // FIXME: Sync this with InitializePredefinedMacros; we need to match int8_t |
| 1565 | // and friends, at least with glibc. |
| 1566 | // FIXME: Make sure 32/64-bit integers don't get defined to types of the wrong |
| 1567 | // width on unusual platforms. |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 1568 | // FIXME: Make sure floating-point mappings are accurate |
| 1569 | // FIXME: Support XF and TF types |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1570 | QualType NewTy; |
| 1571 | switch (DestWidth) { |
| 1572 | case 0: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1573 | S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1574 | return; |
| 1575 | default: |
Chris Lattner | 3c73c41 | 2008-11-19 08:23:25 +0000 | [diff] [blame] | 1576 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1577 | return; |
| 1578 | case 8: |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1579 | if (!IntegerMode) { |
| 1580 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1581 | return; |
| 1582 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1583 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1584 | NewTy = S.Context.SignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1585 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1586 | NewTy = S.Context.UnsignedCharTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1587 | break; |
| 1588 | case 16: |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1589 | if (!IntegerMode) { |
| 1590 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1591 | return; |
| 1592 | } |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1593 | if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1594 | NewTy = S.Context.ShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1595 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1596 | NewTy = S.Context.UnsignedShortTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1597 | break; |
| 1598 | case 32: |
| 1599 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1600 | NewTy = S.Context.FloatTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1601 | else if (OldTy->isSignedIntegerType()) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1602 | NewTy = S.Context.IntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1603 | else |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1604 | NewTy = S.Context.UnsignedIntTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1605 | break; |
| 1606 | case 64: |
| 1607 | if (!IntegerMode) |
Chris Lattner | 0b2f4da | 2008-06-29 00:28:59 +0000 | [diff] [blame] | 1608 | NewTy = S.Context.DoubleTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1609 | else if (OldTy->isSignedIntegerType()) |
Chandler Carruth | aec7caa | 2010-01-26 06:39:24 +0000 | [diff] [blame] | 1610 | if (S.Context.Target.getLongWidth() == 64) |
| 1611 | NewTy = S.Context.LongTy; |
| 1612 | else |
| 1613 | NewTy = S.Context.LongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1614 | else |
Chandler Carruth | aec7caa | 2010-01-26 06:39:24 +0000 | [diff] [blame] | 1615 | if (S.Context.Target.getLongWidth() == 64) |
| 1616 | NewTy = S.Context.UnsignedLongTy; |
| 1617 | else |
| 1618 | NewTy = S.Context.UnsignedLongLongTy; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1619 | break; |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1620 | case 96: |
| 1621 | NewTy = S.Context.LongDoubleTy; |
| 1622 | break; |
Eli Friedman | f98aba3 | 2009-02-13 02:31:07 +0000 | [diff] [blame] | 1623 | case 128: |
| 1624 | if (!IntegerMode) { |
| 1625 | S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name; |
| 1626 | return; |
| 1627 | } |
Anders Carlsson | f5f7d86 | 2009-12-29 07:07:36 +0000 | [diff] [blame] | 1628 | if (OldTy->isSignedIntegerType()) |
| 1629 | NewTy = S.Context.Int128Ty; |
| 1630 | else |
| 1631 | NewTy = S.Context.UnsignedInt128Ty; |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1632 | break; |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1633 | } |
| 1634 | |
Eli Friedman | 7339749 | 2009-03-03 06:41:03 +0000 | [diff] [blame] | 1635 | if (ComplexMode) { |
| 1636 | NewTy = S.Context.getComplexType(NewTy); |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1637 | } |
| 1638 | |
| 1639 | // Install the new type. |
John McCall | ba6a9bd | 2009-10-24 08:00:42 +0000 | [diff] [blame] | 1640 | if (TypedefDecl *TD = dyn_cast<TypedefDecl>(D)) { |
| 1641 | // FIXME: preserve existing source info. |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1642 | TD->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(NewTy)); |
John McCall | ba6a9bd | 2009-10-24 08:00:42 +0000 | [diff] [blame] | 1643 | } else |
Chris Lattner | fbf1347 | 2008-06-27 22:18:37 +0000 | [diff] [blame] | 1644 | cast<ValueDecl>(D)->setType(NewTy); |
| 1645 | } |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1646 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1647 | static void HandleNoDebugAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1648 | // check the attribute arguments. |
| 1649 | if (Attr.getNumArgs() > 0) { |
| 1650 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1651 | return; |
| 1652 | } |
Anders Carlsson | e896d98 | 2009-02-13 08:11:52 +0000 | [diff] [blame] | 1653 | |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1654 | if (!isFunctionOrMethod(d)) { |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1655 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1656 | << Attr.getName() << 0 /*function*/; |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1657 | return; |
| 1658 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1659 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1660 | d->addAttr(::new (S.Context) NoDebugAttr()); |
Anders Carlsson | d87df37 | 2009-02-13 06:46:13 +0000 | [diff] [blame] | 1661 | } |
| 1662 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1663 | static void HandleNoInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1664 | // check the attribute arguments. |
| 1665 | if (Attr.getNumArgs() != 0) { |
| 1666 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1667 | return; |
| 1668 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1669 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 1670 | if (!isa<FunctionDecl>(d)) { |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1671 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1672 | << Attr.getName() << 0 /*function*/; |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1673 | return; |
| 1674 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1675 | |
Mike Stump | 1feade8 | 2009-08-26 22:31:08 +0000 | [diff] [blame] | 1676 | d->addAttr(::new (S.Context) NoInlineAttr()); |
Anders Carlsson | 5bab788 | 2009-02-19 19:16:48 +0000 | [diff] [blame] | 1677 | } |
| 1678 | |
Chris Lattner | cf2a721 | 2009-04-20 19:12:28 +0000 | [diff] [blame] | 1679 | static void HandleGNUInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1680 | // check the attribute arguments. |
| 1681 | if (Attr.getNumArgs() != 0) { |
| 1682 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1683 | return; |
| 1684 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1685 | |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 1686 | FunctionDecl *Fn = dyn_cast<FunctionDecl>(d); |
| 1687 | if (Fn == 0) { |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1688 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1689 | << Attr.getName() << 0 /*function*/; |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1690 | return; |
| 1691 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1692 | |
Douglas Gregor | 0130f3c | 2009-10-27 21:01:01 +0000 | [diff] [blame] | 1693 | if (!Fn->isInlineSpecified()) { |
Chris Lattner | cf2a721 | 2009-04-20 19:12:28 +0000 | [diff] [blame] | 1694 | S.Diag(Attr.getLoc(), diag::warn_gnu_inline_attribute_requires_inline); |
Chris Lattner | c519743 | 2009-04-14 17:02:11 +0000 | [diff] [blame] | 1695 | return; |
| 1696 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1697 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1698 | d->addAttr(::new (S.Context) GNUInlineAttr()); |
Chris Lattner | 26e2554 | 2009-04-14 16:30:50 +0000 | [diff] [blame] | 1699 | } |
| 1700 | |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1701 | static void HandleRegparmAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1702 | // check the attribute arguments. |
| 1703 | if (Attr.getNumArgs() != 1) { |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1704 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1705 | return; |
| 1706 | } |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1707 | |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1708 | if (!isFunctionOrMethod(d)) { |
| 1709 | S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1710 | << Attr.getName() << 0 /*function*/; |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1711 | return; |
| 1712 | } |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1713 | |
| 1714 | Expr *NumParamsExpr = static_cast<Expr *>(Attr.getArg(0)); |
| 1715 | llvm::APSInt NumParams(32); |
| 1716 | if (!NumParamsExpr->isIntegerConstantExpr(NumParams, S.Context)) { |
| 1717 | S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) |
| 1718 | << "regparm" << NumParamsExpr->getSourceRange(); |
| 1719 | return; |
| 1720 | } |
| 1721 | |
Anton Korobeynikov | 264a76c | 2009-04-03 23:38:25 +0000 | [diff] [blame] | 1722 | if (S.Context.Target.getRegParmMax() == 0) { |
| 1723 | S.Diag(Attr.getLoc(), diag::err_attribute_regparm_wrong_platform) |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1724 | << NumParamsExpr->getSourceRange(); |
| 1725 | return; |
| 1726 | } |
| 1727 | |
Anton Korobeynikov | 348f28a | 2009-04-04 10:27:50 +0000 | [diff] [blame] | 1728 | if (NumParams.getLimitedValue(255) > S.Context.Target.getRegParmMax()) { |
Anton Korobeynikov | 264a76c | 2009-04-03 23:38:25 +0000 | [diff] [blame] | 1729 | S.Diag(Attr.getLoc(), diag::err_attribute_regparm_invalid_number) |
| 1730 | << S.Context.Target.getRegParmMax() << NumParamsExpr->getSourceRange(); |
Eli Friedman | 55d3aaf | 2009-03-27 21:06:47 +0000 | [diff] [blame] | 1731 | return; |
| 1732 | } |
| 1733 | |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1734 | d->addAttr(::new (S.Context) RegparmAttr(NumParams.getZExtValue())); |
Fariborz Jahanian | ee76033 | 2009-03-27 18:38:55 +0000 | [diff] [blame] | 1735 | } |
| 1736 | |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1737 | static void HandleFinalAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1738 | // check the attribute arguments. |
| 1739 | if (Attr.getNumArgs() != 0) { |
| 1740 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1741 | return; |
| 1742 | } |
| 1743 | |
| 1744 | if (!isa<CXXRecordDecl>(d) |
| 1745 | && (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual())) { |
| 1746 | S.Diag(Attr.getLoc(), |
| 1747 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1748 | : diag::warn_attribute_wrong_decl_type) |
| 1749 | << Attr.getName() << 7 /*virtual method or class*/; |
| 1750 | return; |
| 1751 | } |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1752 | |
| 1753 | // FIXME: Conform to C++0x redeclaration rules. |
| 1754 | |
| 1755 | if (d->getAttr<FinalAttr>()) { |
| 1756 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "final"; |
| 1757 | return; |
| 1758 | } |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1759 | |
| 1760 | d->addAttr(::new (S.Context) FinalAttr()); |
| 1761 | } |
| 1762 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1763 | //===----------------------------------------------------------------------===// |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1764 | // C++0x member checking attributes |
| 1765 | //===----------------------------------------------------------------------===// |
| 1766 | |
| 1767 | static void HandleBaseCheckAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1768 | if (Attr.getNumArgs() != 0) { |
| 1769 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1770 | return; |
| 1771 | } |
| 1772 | |
| 1773 | if (!isa<CXXRecordDecl>(d)) { |
| 1774 | S.Diag(Attr.getLoc(), |
| 1775 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1776 | : diag::warn_attribute_wrong_decl_type) |
| 1777 | << Attr.getName() << 9 /*class*/; |
| 1778 | return; |
| 1779 | } |
| 1780 | |
| 1781 | if (d->getAttr<BaseCheckAttr>()) { |
| 1782 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "base_check"; |
| 1783 | return; |
| 1784 | } |
| 1785 | |
| 1786 | d->addAttr(::new (S.Context) BaseCheckAttr()); |
| 1787 | } |
| 1788 | |
| 1789 | static void HandleHidingAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1790 | if (Attr.getNumArgs() != 0) { |
| 1791 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1792 | return; |
| 1793 | } |
| 1794 | |
| 1795 | if (!isa<RecordDecl>(d->getDeclContext())) { |
| 1796 | // FIXME: It's not the type that's the problem |
| 1797 | S.Diag(Attr.getLoc(), |
| 1798 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1799 | : diag::warn_attribute_wrong_decl_type) |
| 1800 | << Attr.getName() << 11 /*member*/; |
| 1801 | return; |
| 1802 | } |
| 1803 | |
| 1804 | // FIXME: Conform to C++0x redeclaration rules. |
| 1805 | |
| 1806 | if (d->getAttr<HidingAttr>()) { |
| 1807 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "hiding"; |
| 1808 | return; |
| 1809 | } |
| 1810 | |
| 1811 | d->addAttr(::new (S.Context) HidingAttr()); |
| 1812 | } |
| 1813 | |
| 1814 | static void HandleOverrideAttr(Decl *d, const AttributeList &Attr, Sema &S) { |
| 1815 | if (Attr.getNumArgs() != 0) { |
| 1816 | S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0; |
| 1817 | return; |
| 1818 | } |
| 1819 | |
| 1820 | if (!isa<CXXMethodDecl>(d) || !cast<CXXMethodDecl>(d)->isVirtual()) { |
| 1821 | // FIXME: It's not the type that's the problem |
| 1822 | S.Diag(Attr.getLoc(), |
| 1823 | Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type |
| 1824 | : diag::warn_attribute_wrong_decl_type) |
| 1825 | << Attr.getName() << 10 /*virtual method*/; |
| 1826 | return; |
| 1827 | } |
| 1828 | |
| 1829 | // FIXME: Conform to C++0x redeclaration rules. |
| 1830 | |
| 1831 | if (d->getAttr<OverrideAttr>()) { |
| 1832 | S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "override"; |
| 1833 | return; |
| 1834 | } |
| 1835 | |
| 1836 | d->addAttr(::new (S.Context) OverrideAttr()); |
| 1837 | } |
| 1838 | |
| 1839 | //===----------------------------------------------------------------------===// |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1840 | // Checker-specific attribute handlers. |
| 1841 | //===----------------------------------------------------------------------===// |
| 1842 | |
| 1843 | static void HandleNSReturnsRetainedAttr(Decl *d, const AttributeList &Attr, |
| 1844 | Sema &S) { |
| 1845 | |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1846 | QualType RetTy; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1847 | |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1848 | if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d)) |
| 1849 | RetTy = MD->getResultType(); |
| 1850 | else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d)) |
| 1851 | RetTy = FD->getResultType(); |
| 1852 | else { |
Ted Kremenek | 21531fa | 2009-08-19 23:56:48 +0000 | [diff] [blame] | 1853 | SourceLocation L = Attr.getLoc(); |
| 1854 | S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type) |
| 1855 | << SourceRange(L, L) << Attr.getName() << 3 /* function or method */; |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1856 | return; |
| 1857 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1858 | |
Ted Kremenek | 6217b80 | 2009-07-29 21:53:49 +0000 | [diff] [blame] | 1859 | if (!(S.Context.isObjCNSObjectType(RetTy) || RetTy->getAs<PointerType>() |
John McCall | 183700f | 2009-09-21 23:43:11 +0000 | [diff] [blame] | 1860 | || RetTy->getAs<ObjCObjectPointerType>())) { |
Ted Kremenek | 21531fa | 2009-08-19 23:56:48 +0000 | [diff] [blame] | 1861 | SourceLocation L = Attr.getLoc(); |
| 1862 | S.Diag(d->getLocStart(), diag::warn_ns_attribute_wrong_return_type) |
| 1863 | << SourceRange(L, L) << Attr.getName(); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1864 | return; |
Ted Kremenek | 5dc53c9 | 2009-05-13 21:07:32 +0000 | [diff] [blame] | 1865 | } |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1866 | |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1867 | switch (Attr.getKind()) { |
| 1868 | default: |
| 1869 | assert(0 && "invalid ownership attribute"); |
| 1870 | return; |
| 1871 | case AttributeList::AT_cf_returns_retained: |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1872 | d->addAttr(::new (S.Context) CFReturnsRetainedAttr()); |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1873 | return; |
| 1874 | case AttributeList::AT_ns_returns_retained: |
Argyrios Kyrtzidis | 40b598e | 2009-06-30 02:34:44 +0000 | [diff] [blame] | 1875 | d->addAttr(::new (S.Context) NSReturnsRetainedAttr()); |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1876 | return; |
| 1877 | }; |
| 1878 | } |
| 1879 | |
| 1880 | //===----------------------------------------------------------------------===// |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 1881 | // Top Level Sema Entry Points |
| 1882 | //===----------------------------------------------------------------------===// |
| 1883 | |
Sebastian Redl | a89d82c | 2008-12-21 19:24:58 +0000 | [diff] [blame] | 1884 | /// ProcessDeclAttribute - Apply the specific attribute to the specified decl if |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1885 | /// the attribute applies to decls. If the attribute is a type attribute, just |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1886 | /// silently ignore it if a GNU attribute. FIXME: Applying a C++0x attribute to |
| 1887 | /// the wrong thing is illegal (C++0x [dcl.attr.grammar]/4). |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1888 | static void ProcessDeclAttribute(Scope *scope, Decl *D, |
| 1889 | const AttributeList &Attr, Sema &S) { |
Eli Friedman | 290eeb0 | 2009-06-08 23:27:34 +0000 | [diff] [blame] | 1890 | if (Attr.isDeclspecAttribute()) |
| 1891 | // FIXME: Try to deal with __declspec attributes! |
| 1892 | return; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1893 | switch (Attr.getKind()) { |
Daniel Dunbar | 3068ae0 | 2008-07-31 22:40:48 +0000 | [diff] [blame] | 1894 | case AttributeList::AT_IBOutlet: HandleIBOutletAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1895 | case AttributeList::AT_address_space: |
Fariborz Jahanian | ba372b8 | 2009-02-18 17:52:36 +0000 | [diff] [blame] | 1896 | case AttributeList::AT_objc_gc: |
John Thompson | 6e132aa | 2009-12-04 21:51:28 +0000 | [diff] [blame] | 1897 | case AttributeList::AT_vector_size: |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1898 | // Ignore these, these are type attributes, handled by |
| 1899 | // ProcessTypeAttributes. |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1900 | break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1901 | case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break; |
| 1902 | case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1903 | case AttributeList::AT_always_inline: |
Daniel Dunbar | af668b0 | 2008-10-28 00:17:57 +0000 | [diff] [blame] | 1904 | HandleAlwaysInlineAttr (D, Attr, S); break; |
Ted Kremenek | b725232 | 2009-04-10 00:01:14 +0000 | [diff] [blame] | 1905 | case AttributeList::AT_analyzer_noreturn: |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1906 | HandleAnalyzerNoReturnAttr (D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1907 | case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break; |
| 1908 | case AttributeList::AT_base_check: HandleBaseCheckAttr (D, Attr, S); break; |
Sean Hunt | bbd37c6 | 2009-11-21 08:43:09 +0000 | [diff] [blame] | 1909 | case AttributeList::AT_carries_dependency: |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1910 | HandleDependencyAttr (D, Attr, S); break; |
| 1911 | case AttributeList::AT_cdecl: HandleCDeclAttr (D, Attr, S); break; |
| 1912 | case AttributeList::AT_constructor: HandleConstructorAttr (D, Attr, S); break; |
| 1913 | case AttributeList::AT_deprecated: HandleDeprecatedAttr (D, Attr, S); break; |
| 1914 | case AttributeList::AT_destructor: HandleDestructorAttr (D, Attr, S); break; |
| 1915 | case AttributeList::AT_dllexport: HandleDLLExportAttr (D, Attr, S); break; |
| 1916 | case AttributeList::AT_dllimport: HandleDLLImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1917 | case AttributeList::AT_ext_vector_type: |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1918 | HandleExtVectorTypeAttr(scope, D, Attr, S); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1919 | break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1920 | case AttributeList::AT_fastcall: HandleFastCallAttr (D, Attr, S); break; |
| 1921 | case AttributeList::AT_final: HandleFinalAttr (D, Attr, S); break; |
| 1922 | case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break; |
| 1923 | case AttributeList::AT_format_arg: HandleFormatArgAttr (D, Attr, S); break; |
| 1924 | case AttributeList::AT_gnu_inline: HandleGNUInlineAttr (D, Attr, S); break; |
| 1925 | case AttributeList::AT_hiding: HandleHidingAttr (D, Attr, S); break; |
| 1926 | case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break; |
| 1927 | case AttributeList::AT_malloc: HandleMallocAttr (D, Attr, S); break; |
| 1928 | case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break; |
| 1929 | case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break; |
| 1930 | case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break; |
| 1931 | case AttributeList::AT_override: HandleOverrideAttr (D, Attr, S); break; |
Ted Kremenek | b71368d | 2009-05-09 02:44:38 +0000 | [diff] [blame] | 1932 | |
| 1933 | // Checker-specific. |
| 1934 | case AttributeList::AT_ns_returns_retained: |
| 1935 | case AttributeList::AT_cf_returns_retained: |
| 1936 | HandleNSReturnsRetainedAttr(D, Attr, S); break; |
| 1937 | |
Nate Begeman | 6f3d838 | 2009-06-26 06:32:41 +0000 | [diff] [blame] | 1938 | case AttributeList::AT_reqd_wg_size: |
| 1939 | HandleReqdWorkGroupSize(D, Attr, S); break; |
| 1940 | |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1941 | case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break; |
| 1942 | case AttributeList::AT_section: HandleSectionAttr (D, Attr, S); break; |
| 1943 | case AttributeList::AT_stdcall: HandleStdCallAttr (D, Attr, S); break; |
| 1944 | case AttributeList::AT_unavailable: HandleUnavailableAttr (D, Attr, S); break; |
| 1945 | case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break; |
| 1946 | case AttributeList::AT_used: HandleUsedAttr (D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1947 | case AttributeList::AT_visibility: HandleVisibilityAttr (D, Attr, S); break; |
Chris Lattner | 026dc96 | 2009-02-14 07:37:35 +0000 | [diff] [blame] | 1948 | case AttributeList::AT_warn_unused_result: HandleWarnUnusedResult(D,Attr,S); |
| 1949 | break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1950 | case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break; |
| 1951 | case AttributeList::AT_weak_import: HandleWeakImportAttr (D, Attr, S); break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1952 | case AttributeList::AT_transparent_union: |
| 1953 | HandleTransparentUnionAttr(D, Attr, S); |
| 1954 | break; |
Chris Lattner | 0db29ec | 2009-02-14 08:09:34 +0000 | [diff] [blame] | 1955 | case AttributeList::AT_objc_exception: |
| 1956 | HandleObjCExceptionAttr(D, Attr, S); |
| 1957 | break; |
Douglas Gregor | f9201e0 | 2009-02-11 23:02:49 +0000 | [diff] [blame] | 1958 | case AttributeList::AT_overloadable:HandleOverloadableAttr(D, Attr, S); break; |
Sean Hunt | 7725e67 | 2009-11-25 04:20:27 +0000 | [diff] [blame] | 1959 | case AttributeList::AT_nsobject: HandleObjCNSObject (D, Attr, S); break; |
| 1960 | case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break; |
| 1961 | case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break; |
| 1962 | case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break; |
| 1963 | case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break; |
| 1964 | case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break; |
| 1965 | case AttributeList::AT_nodebug: HandleNoDebugAttr (D, Attr, S); break; |
| 1966 | case AttributeList::AT_noinline: HandleNoInlineAttr (D, Attr, S); break; |
| 1967 | case AttributeList::AT_regparm: HandleRegparmAttr (D, Attr, S); break; |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 1968 | case AttributeList::IgnoredAttribute: |
Chris Lattner | 5e20448 | 2009-04-25 18:44:54 +0000 | [diff] [blame] | 1969 | case AttributeList::AT_no_instrument_function: // Interacts with -pg. |
Anders Carlsson | 05f8e47 | 2009-02-13 08:16:43 +0000 | [diff] [blame] | 1970 | // Just ignore |
| 1971 | break; |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1972 | default: |
Anton Korobeynikov | 82d0a41 | 2010-01-10 12:58:08 +0000 | [diff] [blame] | 1973 | // Ask target about the attribute. |
| 1974 | const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema(); |
| 1975 | if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S)) |
| 1976 | S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName(); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1977 | break; |
| 1978 | } |
| 1979 | } |
| 1980 | |
| 1981 | /// ProcessDeclAttributeList - Apply all the decl attributes in the specified |
| 1982 | /// attribute list to the specified decl, ignoring any type attributes. |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1983 | void Sema::ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AttrList) { |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1984 | while (AttrList) { |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 1985 | ProcessDeclAttribute(S, D, *AttrList, *this); |
Chris Lattner | 803d080 | 2008-06-29 00:43:07 +0000 | [diff] [blame] | 1986 | AttrList = AttrList->getNext(); |
| 1987 | } |
| 1988 | } |
| 1989 | |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1990 | /// DeclClonePragmaWeak - clone existing decl (maybe definition), |
| 1991 | /// #pragma weak needs a non-definition decl and source may not have one |
Mike Stump | 1eb4433 | 2009-09-09 15:08:12 +0000 | [diff] [blame] | 1992 | NamedDecl * Sema::DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II) { |
Ryan Flynn | 7b1fdbd | 2009-07-31 02:52:19 +0000 | [diff] [blame] | 1993 | assert(isa<FunctionDecl>(ND) || isa<VarDecl>(ND)); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1994 | NamedDecl *NewD = 0; |
| 1995 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) { |
| 1996 | NewD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(), |
| 1997 | FD->getLocation(), DeclarationName(II), |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 1998 | FD->getType(), FD->getTypeSourceInfo()); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 1999 | } else if (VarDecl *VD = dyn_cast<VarDecl>(ND)) { |
| 2000 | NewD = VarDecl::Create(VD->getASTContext(), VD->getDeclContext(), |
| 2001 | VD->getLocation(), II, |
John McCall | a93c934 | 2009-12-07 02:54:59 +0000 | [diff] [blame] | 2002 | VD->getType(), VD->getTypeSourceInfo(), |
Argyrios Kyrtzidis | a1d5662 | 2009-08-19 01:27:57 +0000 | [diff] [blame] | 2003 | VD->getStorageClass()); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 2004 | } |
| 2005 | return NewD; |
| 2006 | } |
| 2007 | |
| 2008 | /// DeclApplyPragmaWeak - A declaration (maybe definition) needs #pragma weak |
| 2009 | /// applied to it, possibly with an alias. |
Ryan Flynn | 7b1fdbd | 2009-07-31 02:52:19 +0000 | [diff] [blame] | 2010 | void Sema::DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W) { |
Chris Lattner | c4f1fb1 | 2009-09-08 18:10:11 +0000 | [diff] [blame] | 2011 | if (W.getUsed()) return; // only do this once |
| 2012 | W.setUsed(true); |
| 2013 | if (W.getAlias()) { // clone decl, impersonate __attribute(weak,alias(...)) |
| 2014 | IdentifierInfo *NDId = ND->getIdentifier(); |
| 2015 | NamedDecl *NewD = DeclClonePragmaWeak(ND, W.getAlias()); |
| 2016 | NewD->addAttr(::new (Context) AliasAttr(NDId->getName())); |
| 2017 | NewD->addAttr(::new (Context) WeakAttr()); |
| 2018 | WeakTopLevelDecl.push_back(NewD); |
| 2019 | // FIXME: "hideous" code from Sema::LazilyCreateBuiltin |
| 2020 | // to insert Decl at TU scope, sorry. |
| 2021 | DeclContext *SavedContext = CurContext; |
| 2022 | CurContext = Context.getTranslationUnitDecl(); |
| 2023 | PushOnScopeChains(NewD, S); |
| 2024 | CurContext = SavedContext; |
| 2025 | } else { // just add weak to existing |
| 2026 | ND->addAttr(::new (Context) WeakAttr()); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 2027 | } |
| 2028 | } |
| 2029 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 2030 | /// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in |
| 2031 | /// it, apply them to D. This is a bit tricky because PD can have attributes |
| 2032 | /// specified in many different places, and we need to find and apply them all. |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 2033 | void Sema::ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD) { |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 2034 | // Handle #pragma weak |
| 2035 | if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) { |
| 2036 | if (ND->hasLinkage()) { |
| 2037 | WeakInfo W = WeakUndeclaredIdentifiers.lookup(ND->getIdentifier()); |
| 2038 | if (W != WeakInfo()) { |
Ryan Flynn | 7b1fdbd | 2009-07-31 02:52:19 +0000 | [diff] [blame] | 2039 | // Identifier referenced by #pragma weak before it was declared |
| 2040 | DeclApplyPragmaWeak(S, ND, W); |
Ryan Flynn | e25ff83 | 2009-07-30 03:15:39 +0000 | [diff] [blame] | 2041 | WeakUndeclaredIdentifiers[ND->getIdentifier()] = W; |
| 2042 | } |
| 2043 | } |
| 2044 | } |
| 2045 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 2046 | // Apply decl attributes from the DeclSpec if present. |
| 2047 | if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes()) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 2048 | ProcessDeclAttributeList(S, D, Attrs); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 2049 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 2050 | // Walk the declarator structure, applying decl attributes that were in a type |
| 2051 | // position to the decl itself. This handles cases like: |
| 2052 | // int *__attr__(x)** D; |
| 2053 | // when X is a decl attribute. |
| 2054 | for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i) |
| 2055 | if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs()) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 2056 | ProcessDeclAttributeList(S, D, Attrs); |
Mike Stump | bf91650 | 2009-07-24 19:02:52 +0000 | [diff] [blame] | 2057 | |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 2058 | // Finally, apply any attributes on the decl itself. |
| 2059 | if (const AttributeList *Attrs = PD.getAttributes()) |
Douglas Gregor | 9cdda0c | 2009-06-17 21:51:59 +0000 | [diff] [blame] | 2060 | ProcessDeclAttributeList(S, D, Attrs); |
Chris Lattner | 0744e5f | 2008-06-29 00:23:49 +0000 | [diff] [blame] | 2061 | } |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2062 | |
| 2063 | /// PushParsingDeclaration - Enter a new "scope" of deprecation |
| 2064 | /// warnings. |
| 2065 | /// |
| 2066 | /// The state token we use is the start index of this scope |
| 2067 | /// on the warning stack. |
| 2068 | Action::ParsingDeclStackState Sema::PushParsingDeclaration() { |
| 2069 | ParsingDeclDepth++; |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame^] | 2070 | return (ParsingDeclStackState) DelayedDiagnostics.size(); |
| 2071 | } |
| 2072 | |
| 2073 | void Sema::PopParsingDeclaration(ParsingDeclStackState S, DeclPtrTy Ctx) { |
| 2074 | assert(ParsingDeclDepth > 0 && "empty ParsingDeclaration stack"); |
| 2075 | ParsingDeclDepth--; |
| 2076 | |
| 2077 | if (DelayedDiagnostics.empty()) |
| 2078 | return; |
| 2079 | |
| 2080 | unsigned SavedIndex = (unsigned) S; |
| 2081 | assert(SavedIndex <= DelayedDiagnostics.size() && |
| 2082 | "saved index is out of bounds"); |
| 2083 | |
| 2084 | // We only want to actually emit delayed diagnostics when we |
| 2085 | // successfully parsed a decl. |
| 2086 | Decl *D = Ctx ? Ctx.getAs<Decl>() : 0; |
| 2087 | if (D) { |
| 2088 | // We really do want to start with 0 here. We get one push for a |
| 2089 | // decl spec and another for each declarator; in a decl group like: |
| 2090 | // deprecated_typedef foo, *bar, baz(); |
| 2091 | // only the declarator pops will be passed decls. This is correct; |
| 2092 | // we really do need to consider delayed diagnostics from the decl spec |
| 2093 | // for each of the different declarations. |
| 2094 | for (unsigned I = 0, E = DelayedDiagnostics.size(); I != E; ++I) { |
| 2095 | if (DelayedDiagnostics[I].Triggered) |
| 2096 | continue; |
| 2097 | |
| 2098 | switch (DelayedDiagnostics[I].Kind) { |
| 2099 | case DelayedDiagnostic::Deprecation: |
| 2100 | HandleDelayedDeprecationCheck(DelayedDiagnostics[I], D); |
| 2101 | break; |
| 2102 | |
| 2103 | case DelayedDiagnostic::Access: |
| 2104 | HandleDelayedAccessCheck(DelayedDiagnostics[I], D); |
| 2105 | break; |
| 2106 | } |
| 2107 | } |
| 2108 | } |
| 2109 | |
| 2110 | DelayedDiagnostics.set_size(SavedIndex); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2111 | } |
| 2112 | |
| 2113 | static bool isDeclDeprecated(Decl *D) { |
| 2114 | do { |
| 2115 | if (D->hasAttr<DeprecatedAttr>()) |
| 2116 | return true; |
| 2117 | } while ((D = cast_or_null<Decl>(D->getDeclContext()))); |
| 2118 | return false; |
| 2119 | } |
| 2120 | |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame^] | 2121 | void Sema::HandleDelayedDeprecationCheck(Sema::DelayedDiagnostic &DD, |
| 2122 | Decl *Ctx) { |
| 2123 | if (isDeclDeprecated(Ctx)) |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2124 | return; |
| 2125 | |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame^] | 2126 | DD.Triggered = true; |
| 2127 | Diag(DD.Loc, diag::warn_deprecated) |
| 2128 | << DD.DeprecationData.Decl->getDeclName(); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2129 | } |
| 2130 | |
| 2131 | void Sema::EmitDeprecationWarning(NamedDecl *D, SourceLocation Loc) { |
| 2132 | // Delay if we're currently parsing a declaration. |
| 2133 | if (ParsingDeclDepth) { |
John McCall | 2f51448 | 2010-01-27 03:50:35 +0000 | [diff] [blame^] | 2134 | DelayedDiagnostics.push_back(DelayedDiagnostic::makeDeprecation(Loc, D)); |
John McCall | 54abf7d | 2009-11-04 02:18:39 +0000 | [diff] [blame] | 2135 | return; |
| 2136 | } |
| 2137 | |
| 2138 | // Otherwise, don't warn if our current context is deprecated. |
| 2139 | if (isDeclDeprecated(cast<Decl>(CurContext))) |
| 2140 | return; |
| 2141 | |
| 2142 | Diag(Loc, diag::warn_deprecated) << D->getDeclName(); |
| 2143 | } |