forked from OSchip/llvm-project
4897 lines
166 KiB
C++
4897 lines
166 KiB
C++
//===--- SemaDeclAttr.cpp - Declaration Attribute Handling ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements decl-related attribute processing.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/SemaInternal.h"
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#include "TargetAttributesSema.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/CXXInheritance.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/AST/Expr.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Sema/DeclSpec.h"
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#include "clang/Sema/DelayedDiagnostic.h"
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#include "clang/Sema/Lookup.h"
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#include "llvm/ADT/StringExtras.h"
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using namespace clang;
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using namespace sema;
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/// These constants match the enumerated choices of
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/// warn_attribute_wrong_decl_type and err_attribute_wrong_decl_type.
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enum AttributeDeclKind {
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ExpectedFunction,
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ExpectedUnion,
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ExpectedVariableOrFunction,
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ExpectedFunctionOrMethod,
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ExpectedParameter,
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ExpectedFunctionMethodOrBlock,
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ExpectedFunctionMethodOrClass,
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ExpectedFunctionMethodOrParameter,
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ExpectedClass,
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ExpectedVariable,
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ExpectedMethod,
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ExpectedVariableFunctionOrLabel,
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ExpectedFieldOrGlobalVar,
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ExpectedStruct,
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ExpectedVariableFunctionOrTag,
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ExpectedTLSVar
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};
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//===----------------------------------------------------------------------===//
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// Helper functions
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//===----------------------------------------------------------------------===//
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static const FunctionType *getFunctionType(const Decl *D,
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bool blocksToo = true) {
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QualType Ty;
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if (const ValueDecl *decl = dyn_cast<ValueDecl>(D))
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Ty = decl->getType();
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else if (const FieldDecl *decl = dyn_cast<FieldDecl>(D))
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Ty = decl->getType();
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else if (const TypedefNameDecl* decl = dyn_cast<TypedefNameDecl>(D))
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Ty = decl->getUnderlyingType();
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else
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return 0;
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if (Ty->isFunctionPointerType())
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Ty = Ty->getAs<PointerType>()->getPointeeType();
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else if (blocksToo && Ty->isBlockPointerType())
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Ty = Ty->getAs<BlockPointerType>()->getPointeeType();
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return Ty->getAs<FunctionType>();
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}
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// FIXME: We should provide an abstraction around a method or function
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// to provide the following bits of information.
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/// isFunction - Return true if the given decl has function
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/// type (function or function-typed variable).
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static bool isFunction(const Decl *D) {
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return getFunctionType(D, false) != NULL;
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}
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/// isFunctionOrMethod - Return true if the given decl has function
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/// type (function or function-typed variable) or an Objective-C
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/// method.
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static bool isFunctionOrMethod(const Decl *D) {
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return isFunction(D) || isa<ObjCMethodDecl>(D);
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}
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/// isFunctionOrMethodOrBlock - Return true if the given decl has function
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/// type (function or function-typed variable) or an Objective-C
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/// method or a block.
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static bool isFunctionOrMethodOrBlock(const Decl *D) {
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if (isFunctionOrMethod(D))
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return true;
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// check for block is more involved.
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if (const VarDecl *V = dyn_cast<VarDecl>(D)) {
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QualType Ty = V->getType();
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return Ty->isBlockPointerType();
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}
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return isa<BlockDecl>(D);
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}
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/// Return true if the given decl has a declarator that should have
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/// been processed by Sema::GetTypeForDeclarator.
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static bool hasDeclarator(const Decl *D) {
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// In some sense, TypedefDecl really *ought* to be a DeclaratorDecl.
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return isa<DeclaratorDecl>(D) || isa<BlockDecl>(D) || isa<TypedefNameDecl>(D) ||
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isa<ObjCPropertyDecl>(D);
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}
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/// hasFunctionProto - Return true if the given decl has a argument
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/// information. This decl should have already passed
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/// isFunctionOrMethod or isFunctionOrMethodOrBlock.
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static bool hasFunctionProto(const Decl *D) {
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if (const FunctionType *FnTy = getFunctionType(D))
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return isa<FunctionProtoType>(FnTy);
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else {
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assert(isa<ObjCMethodDecl>(D) || isa<BlockDecl>(D));
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return true;
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}
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}
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/// getFunctionOrMethodNumArgs - Return number of function or method
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/// arguments. It is an error to call this on a K&R function (use
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/// hasFunctionProto first).
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static unsigned getFunctionOrMethodNumArgs(const Decl *D) {
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if (const FunctionType *FnTy = getFunctionType(D))
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return cast<FunctionProtoType>(FnTy)->getNumArgs();
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if (const BlockDecl *BD = dyn_cast<BlockDecl>(D))
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return BD->getNumParams();
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return cast<ObjCMethodDecl>(D)->param_size();
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}
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static QualType getFunctionOrMethodArgType(const Decl *D, unsigned Idx) {
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if (const FunctionType *FnTy = getFunctionType(D))
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return cast<FunctionProtoType>(FnTy)->getArgType(Idx);
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if (const BlockDecl *BD = dyn_cast<BlockDecl>(D))
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return BD->getParamDecl(Idx)->getType();
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return cast<ObjCMethodDecl>(D)->param_begin()[Idx]->getType();
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}
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static QualType getFunctionOrMethodResultType(const Decl *D) {
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if (const FunctionType *FnTy = getFunctionType(D))
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return cast<FunctionProtoType>(FnTy)->getResultType();
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return cast<ObjCMethodDecl>(D)->getResultType();
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}
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static bool isFunctionOrMethodVariadic(const Decl *D) {
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if (const FunctionType *FnTy = getFunctionType(D)) {
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const FunctionProtoType *proto = cast<FunctionProtoType>(FnTy);
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return proto->isVariadic();
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} else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D))
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return BD->isVariadic();
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else {
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return cast<ObjCMethodDecl>(D)->isVariadic();
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}
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}
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static bool isInstanceMethod(const Decl *D) {
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if (const CXXMethodDecl *MethodDecl = dyn_cast<CXXMethodDecl>(D))
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return MethodDecl->isInstance();
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return false;
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}
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static inline bool isNSStringType(QualType T, ASTContext &Ctx) {
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const ObjCObjectPointerType *PT = T->getAs<ObjCObjectPointerType>();
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if (!PT)
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return false;
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ObjCInterfaceDecl *Cls = PT->getObjectType()->getInterface();
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if (!Cls)
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return false;
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IdentifierInfo* ClsName = Cls->getIdentifier();
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// FIXME: Should we walk the chain of classes?
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return ClsName == &Ctx.Idents.get("NSString") ||
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ClsName == &Ctx.Idents.get("NSMutableString");
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}
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static inline bool isCFStringType(QualType T, ASTContext &Ctx) {
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const PointerType *PT = T->getAs<PointerType>();
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if (!PT)
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return false;
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const RecordType *RT = PT->getPointeeType()->getAs<RecordType>();
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if (!RT)
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return false;
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const RecordDecl *RD = RT->getDecl();
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if (RD->getTagKind() != TTK_Struct)
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return false;
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return RD->getIdentifier() == &Ctx.Idents.get("__CFString");
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}
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/// \brief Check if the attribute has exactly as many args as Num. May
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/// output an error.
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static bool checkAttributeNumArgs(Sema &S, const AttributeList &Attr,
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unsigned int Num) {
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if (Attr.getNumArgs() != Num) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << Num;
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return false;
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}
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return true;
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}
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/// \brief Check if the attribute has at least as many args as Num. May
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/// output an error.
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static bool checkAttributeAtLeastNumArgs(Sema &S, const AttributeList &Attr,
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unsigned int Num) {
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if (Attr.getNumArgs() < Num) {
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S.Diag(Attr.getLoc(), diag::err_attribute_too_few_arguments) << Num;
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return false;
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}
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return true;
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}
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/// \brief Check if IdxExpr is a valid argument index for a function or
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/// instance method D. May output an error.
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///
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/// \returns true if IdxExpr is a valid index.
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static bool checkFunctionOrMethodArgumentIndex(Sema &S, const Decl *D,
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StringRef AttrName,
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SourceLocation AttrLoc,
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unsigned AttrArgNum,
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const Expr *IdxExpr,
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uint64_t &Idx)
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{
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assert(isFunctionOrMethod(D) && hasFunctionProto(D));
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// In C++ the implicit 'this' function parameter also counts.
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// Parameters are counted from one.
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const bool HasImplicitThisParam = isInstanceMethod(D);
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const unsigned NumArgs = getFunctionOrMethodNumArgs(D) + HasImplicitThisParam;
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const unsigned FirstIdx = 1;
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llvm::APSInt IdxInt;
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if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent() ||
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!IdxExpr->isIntegerConstantExpr(IdxInt, S.Context)) {
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S.Diag(AttrLoc, diag::err_attribute_argument_n_not_int)
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<< AttrName << AttrArgNum << IdxExpr->getSourceRange();
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return false;
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}
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Idx = IdxInt.getLimitedValue();
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if (Idx < FirstIdx || (!isFunctionOrMethodVariadic(D) && Idx > NumArgs)) {
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S.Diag(AttrLoc, diag::err_attribute_argument_out_of_bounds)
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<< AttrName << AttrArgNum << IdxExpr->getSourceRange();
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return false;
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}
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Idx--; // Convert to zero-based.
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if (HasImplicitThisParam) {
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if (Idx == 0) {
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S.Diag(AttrLoc,
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diag::err_attribute_invalid_implicit_this_argument)
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<< AttrName << IdxExpr->getSourceRange();
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return false;
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}
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--Idx;
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}
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return true;
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}
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///
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/// \brief Check if passed in Decl is a field or potentially shared global var
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/// \return true if the Decl is a field or potentially shared global variable
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///
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static bool mayBeSharedVariable(const Decl *D) {
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if (isa<FieldDecl>(D))
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return true;
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if (const VarDecl *vd = dyn_cast<VarDecl>(D))
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return (vd->hasGlobalStorage() && !(vd->isThreadSpecified()));
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return false;
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}
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/// \brief Check if the passed-in expression is of type int or bool.
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static bool isIntOrBool(Expr *Exp) {
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QualType QT = Exp->getType();
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return QT->isBooleanType() || QT->isIntegerType();
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}
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// Check to see if the type is a smart pointer of some kind. We assume
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// it's a smart pointer if it defines both operator-> and operator*.
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static bool threadSafetyCheckIsSmartPointer(Sema &S, const RecordType* RT) {
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DeclContextLookupConstResult Res1 = RT->getDecl()->lookup(
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S.Context.DeclarationNames.getCXXOperatorName(OO_Star));
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if (Res1.first == Res1.second)
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return false;
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DeclContextLookupConstResult Res2 = RT->getDecl()->lookup(
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S.Context.DeclarationNames.getCXXOperatorName(OO_Arrow));
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if (Res2.first == Res2.second)
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return false;
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return true;
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}
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/// \brief Check if passed in Decl is a pointer type.
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/// Note that this function may produce an error message.
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/// \return true if the Decl is a pointer type; false otherwise
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static bool threadSafetyCheckIsPointer(Sema &S, const Decl *D,
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const AttributeList &Attr) {
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if (const ValueDecl *vd = dyn_cast<ValueDecl>(D)) {
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QualType QT = vd->getType();
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if (QT->isAnyPointerType())
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return true;
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if (const RecordType *RT = QT->getAs<RecordType>()) {
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// If it's an incomplete type, it could be a smart pointer; skip it.
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// (We don't want to force template instantiation if we can avoid it,
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// since that would alter the order in which templates are instantiated.)
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if (RT->isIncompleteType())
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return true;
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if (threadSafetyCheckIsSmartPointer(S, RT))
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return true;
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}
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S.Diag(Attr.getLoc(), diag::warn_thread_attribute_decl_not_pointer)
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<< Attr.getName()->getName() << QT;
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} else {
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S.Diag(Attr.getLoc(), diag::err_attribute_can_be_applied_only_to_value_decl)
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<< Attr.getName();
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}
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return false;
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}
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/// \brief Checks that the passed in QualType either is of RecordType or points
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/// to RecordType. Returns the relevant RecordType, null if it does not exit.
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static const RecordType *getRecordType(QualType QT) {
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if (const RecordType *RT = QT->getAs<RecordType>())
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return RT;
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// Now check if we point to record type.
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if (const PointerType *PT = QT->getAs<PointerType>())
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return PT->getPointeeType()->getAs<RecordType>();
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return 0;
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}
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static bool checkBaseClassIsLockableCallback(const CXXBaseSpecifier *Specifier,
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CXXBasePath &Path, void *Unused) {
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const RecordType *RT = Specifier->getType()->getAs<RecordType>();
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if (RT->getDecl()->getAttr<LockableAttr>())
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return true;
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return false;
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}
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/// \brief Thread Safety Analysis: Checks that the passed in RecordType
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/// resolves to a lockable object.
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static void checkForLockableRecord(Sema &S, Decl *D, const AttributeList &Attr,
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QualType Ty) {
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const RecordType *RT = getRecordType(Ty);
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// Warn if could not get record type for this argument.
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if (!RT) {
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S.Diag(Attr.getLoc(), diag::warn_thread_attribute_argument_not_class)
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<< Attr.getName() << Ty.getAsString();
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return;
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}
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// Don't check for lockable if the class hasn't been defined yet.
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if (RT->isIncompleteType())
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return;
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// Allow smart pointers to be used as lockable objects.
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// FIXME -- Check the type that the smart pointer points to.
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if (threadSafetyCheckIsSmartPointer(S, RT))
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return;
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// Check if the type is lockable.
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RecordDecl *RD = RT->getDecl();
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if (RD->getAttr<LockableAttr>())
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return;
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// Else check if any base classes are lockable.
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if (CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) {
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CXXBasePaths BPaths(false, false);
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if (CRD->lookupInBases(checkBaseClassIsLockableCallback, 0, BPaths))
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return;
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}
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S.Diag(Attr.getLoc(), diag::warn_thread_attribute_argument_not_lockable)
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<< Attr.getName() << Ty.getAsString();
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}
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/// \brief Thread Safety Analysis: Checks that all attribute arguments, starting
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/// from Sidx, resolve to a lockable object.
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/// \param Sidx The attribute argument index to start checking with.
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/// \param ParamIdxOk Whether an argument can be indexing into a function
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/// parameter list.
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static void checkAttrArgsAreLockableObjs(Sema &S, Decl *D,
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const AttributeList &Attr,
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SmallVectorImpl<Expr*> &Args,
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int Sidx = 0,
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bool ParamIdxOk = false) {
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for(unsigned Idx = Sidx; Idx < Attr.getNumArgs(); ++Idx) {
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Expr *ArgExp = Attr.getArg(Idx);
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if (ArgExp->isTypeDependent()) {
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// FIXME -- need to check this again on template instantiation
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Args.push_back(ArgExp);
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continue;
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}
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if (StringLiteral *StrLit = dyn_cast<StringLiteral>(ArgExp)) {
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if (StrLit->getLength() == 0 ||
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StrLit->getString() == StringRef("*")) {
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// Pass empty strings to the analyzer without warnings.
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// Treat "*" as the universal lock.
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Args.push_back(ArgExp);
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continue;
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}
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// We allow constant strings to be used as a placeholder for expressions
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// that are not valid C++ syntax, but warn that they are ignored.
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S.Diag(Attr.getLoc(), diag::warn_thread_attribute_ignored) <<
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Attr.getName();
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Args.push_back(ArgExp);
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continue;
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}
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QualType ArgTy = ArgExp->getType();
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// A pointer to member expression of the form &MyClass::mu is treated
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// specially -- we need to look at the type of the member.
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if (UnaryOperator *UOp = dyn_cast<UnaryOperator>(ArgExp))
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if (UOp->getOpcode() == UO_AddrOf)
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if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(UOp->getSubExpr()))
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if (DRE->getDecl()->isCXXInstanceMember())
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ArgTy = DRE->getDecl()->getType();
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// First see if we can just cast to record type, or point to record type.
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const RecordType *RT = getRecordType(ArgTy);
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// Now check if we index into a record type function param.
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if(!RT && ParamIdxOk) {
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FunctionDecl *FD = dyn_cast<FunctionDecl>(D);
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IntegerLiteral *IL = dyn_cast<IntegerLiteral>(ArgExp);
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if(FD && IL) {
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unsigned int NumParams = FD->getNumParams();
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llvm::APInt ArgValue = IL->getValue();
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uint64_t ParamIdxFromOne = ArgValue.getZExtValue();
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uint64_t ParamIdxFromZero = ParamIdxFromOne - 1;
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if(!ArgValue.isStrictlyPositive() || ParamIdxFromOne > NumParams) {
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S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_range)
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<< Attr.getName() << Idx + 1 << NumParams;
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continue;
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}
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ArgTy = FD->getParamDecl(ParamIdxFromZero)->getType();
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}
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}
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checkForLockableRecord(S, D, Attr, ArgTy);
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Args.push_back(ArgExp);
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}
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}
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//===----------------------------------------------------------------------===//
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// Attribute Implementations
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//===----------------------------------------------------------------------===//
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|
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// FIXME: All this manual attribute parsing code is gross. At the
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// least add some helper functions to check most argument patterns (#
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// and types of args).
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enum ThreadAttributeDeclKind {
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ThreadExpectedFieldOrGlobalVar,
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ThreadExpectedFunctionOrMethod,
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ThreadExpectedClassOrStruct
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};
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static bool checkGuardedVarAttrCommon(Sema &S, Decl *D,
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const AttributeList &Attr) {
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assert(!Attr.isInvalid());
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if (!checkAttributeNumArgs(S, Attr, 0))
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return false;
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// D must be either a member field or global (potentially shared) variable.
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if (!mayBeSharedVariable(D)) {
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S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
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<< Attr.getName() << ThreadExpectedFieldOrGlobalVar;
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return false;
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}
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return true;
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}
|
|
|
|
static void handleGuardedVarAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!checkGuardedVarAttrCommon(S, D, Attr))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) GuardedVarAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handlePtGuardedVarAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!checkGuardedVarAttrCommon(S, D, Attr))
|
|
return;
|
|
|
|
if (!threadSafetyCheckIsPointer(S, D, Attr))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) PtGuardedVarAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static bool checkGuardedByAttrCommon(Sema &S, Decl *D,
|
|
const AttributeList &Attr,
|
|
Expr* &Arg) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return false;
|
|
|
|
// D must be either a member field or global (potentially shared) variable.
|
|
if (!mayBeSharedVariable(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFieldOrGlobalVar;
|
|
return false;
|
|
}
|
|
|
|
SmallVector<Expr*, 1> Args;
|
|
// check that all arguments are lockable objects
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args);
|
|
unsigned Size = Args.size();
|
|
if (Size != 1)
|
|
return false;
|
|
|
|
Arg = Args[0];
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleGuardedByAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
Expr *Arg = 0;
|
|
if (!checkGuardedByAttrCommon(S, D, Attr, Arg))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) GuardedByAttr(Attr.getRange(), S.Context, Arg));
|
|
}
|
|
|
|
static void handlePtGuardedByAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
Expr *Arg = 0;
|
|
if (!checkGuardedByAttrCommon(S, D, Attr, Arg))
|
|
return;
|
|
|
|
if (!threadSafetyCheckIsPointer(S, D, Attr))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) PtGuardedByAttr(Attr.getRange(),
|
|
S.Context, Arg));
|
|
}
|
|
|
|
static bool checkLockableAttrCommon(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return false;
|
|
|
|
// FIXME: Lockable structs for C code.
|
|
if (!isa<CXXRecordDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedClassOrStruct;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleLockableAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!checkLockableAttrCommon(S, D, Attr))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) LockableAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleScopedLockableAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!checkLockableAttrCommon(S, D, Attr))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) ScopedLockableAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNoThreadSafetyAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NoThreadSafetyAnalysisAttr(Attr.getRange(),
|
|
S.Context));
|
|
}
|
|
|
|
static void handleNoAddressSafetyAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NoAddressSafetyAnalysisAttr(Attr.getRange(),
|
|
S.Context));
|
|
}
|
|
|
|
static bool checkAcquireOrderAttrCommon(Sema &S, Decl *D,
|
|
const AttributeList &Attr,
|
|
SmallVector<Expr*, 1> &Args) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeAtLeastNumArgs(S, Attr, 1))
|
|
return false;
|
|
|
|
// D must be either a member field or global (potentially shared) variable.
|
|
ValueDecl *VD = dyn_cast<ValueDecl>(D);
|
|
if (!VD || !mayBeSharedVariable(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFieldOrGlobalVar;
|
|
return false;
|
|
}
|
|
|
|
// Check that this attribute only applies to lockable types.
|
|
QualType QT = VD->getType();
|
|
if (!QT->isDependentType()) {
|
|
const RecordType *RT = getRecordType(QT);
|
|
if (!RT || !RT->getDecl()->getAttr<LockableAttr>()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_decl_not_lockable)
|
|
<< Attr.getName();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Check that all arguments are lockable objects.
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args);
|
|
if (Args.size() == 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleAcquiredAfterAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 1> Args;
|
|
if (!checkAcquireOrderAttrCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
Expr **StartArg = &Args[0];
|
|
D->addAttr(::new (S.Context) AcquiredAfterAttr(Attr.getRange(), S.Context,
|
|
StartArg, Args.size()));
|
|
}
|
|
|
|
static void handleAcquiredBeforeAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 1> Args;
|
|
if (!checkAcquireOrderAttrCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
Expr **StartArg = &Args[0];
|
|
D->addAttr(::new (S.Context) AcquiredBeforeAttr(Attr.getRange(), S.Context,
|
|
StartArg, Args.size()));
|
|
}
|
|
|
|
static bool checkLockFunAttrCommon(Sema &S, Decl *D,
|
|
const AttributeList &Attr,
|
|
SmallVector<Expr*, 1> &Args) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
// zero or more arguments ok
|
|
|
|
// check that the attribute is applied to a function
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return false;
|
|
}
|
|
|
|
// check that all arguments are lockable objects
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args, 0, /*ParamIdxOk=*/true);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleSharedLockFunctionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 1> Args;
|
|
if (!checkLockFunAttrCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
unsigned Size = Args.size();
|
|
Expr **StartArg = Size == 0 ? 0 : &Args[0];
|
|
D->addAttr(::new (S.Context) SharedLockFunctionAttr(Attr.getRange(),
|
|
S.Context,
|
|
StartArg, Size));
|
|
}
|
|
|
|
static void handleExclusiveLockFunctionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 1> Args;
|
|
if (!checkLockFunAttrCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
unsigned Size = Args.size();
|
|
Expr **StartArg = Size == 0 ? 0 : &Args[0];
|
|
D->addAttr(::new (S.Context) ExclusiveLockFunctionAttr(Attr.getRange(),
|
|
S.Context,
|
|
StartArg, Size));
|
|
}
|
|
|
|
static bool checkTryLockFunAttrCommon(Sema &S, Decl *D,
|
|
const AttributeList &Attr,
|
|
SmallVector<Expr*, 2> &Args) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeAtLeastNumArgs(S, Attr, 1))
|
|
return false;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return false;
|
|
}
|
|
|
|
if (!isIntOrBool(Attr.getArg(0))) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_first_argument_not_int_or_bool)
|
|
<< Attr.getName();
|
|
return false;
|
|
}
|
|
|
|
// check that all arguments are lockable objects
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args, 1);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleSharedTrylockFunctionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 2> Args;
|
|
if (!checkTryLockFunAttrCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
unsigned Size = Args.size();
|
|
Expr **StartArg = Size == 0 ? 0 : &Args[0];
|
|
D->addAttr(::new (S.Context) SharedTrylockFunctionAttr(Attr.getRange(),
|
|
S.Context,
|
|
Attr.getArg(0),
|
|
StartArg, Size));
|
|
}
|
|
|
|
static void handleExclusiveTrylockFunctionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 2> Args;
|
|
if (!checkTryLockFunAttrCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
unsigned Size = Args.size();
|
|
Expr **StartArg = Size == 0 ? 0 : &Args[0];
|
|
D->addAttr(::new (S.Context) ExclusiveTrylockFunctionAttr(Attr.getRange(),
|
|
S.Context,
|
|
Attr.getArg(0),
|
|
StartArg, Size));
|
|
}
|
|
|
|
static bool checkLocksRequiredCommon(Sema &S, Decl *D,
|
|
const AttributeList &Attr,
|
|
SmallVector<Expr*, 1> &Args) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeAtLeastNumArgs(S, Attr, 1))
|
|
return false;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return false;
|
|
}
|
|
|
|
// check that all arguments are lockable objects
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args);
|
|
if (Args.size() == 0)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleExclusiveLocksRequiredAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 1> Args;
|
|
if (!checkLocksRequiredCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
Expr **StartArg = &Args[0];
|
|
D->addAttr(::new (S.Context) ExclusiveLocksRequiredAttr(Attr.getRange(),
|
|
S.Context,
|
|
StartArg,
|
|
Args.size()));
|
|
}
|
|
|
|
static void handleSharedLocksRequiredAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
SmallVector<Expr*, 1> Args;
|
|
if (!checkLocksRequiredCommon(S, D, Attr, Args))
|
|
return;
|
|
|
|
Expr **StartArg = &Args[0];
|
|
D->addAttr(::new (S.Context) SharedLocksRequiredAttr(Attr.getRange(),
|
|
S.Context,
|
|
StartArg,
|
|
Args.size()));
|
|
}
|
|
|
|
static void handleUnlockFunAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
// zero or more arguments ok
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
// check that all arguments are lockable objects
|
|
SmallVector<Expr*, 1> Args;
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args, 0, /*ParamIdxOk=*/true);
|
|
unsigned Size = Args.size();
|
|
Expr **StartArg = Size == 0 ? 0 : &Args[0];
|
|
|
|
D->addAttr(::new (S.Context) UnlockFunctionAttr(Attr.getRange(), S.Context,
|
|
StartArg, Size));
|
|
}
|
|
|
|
static void handleLockReturnedAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
// check that the argument is lockable object
|
|
SmallVector<Expr*, 1> Args;
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args);
|
|
unsigned Size = Args.size();
|
|
if (Size == 0)
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) LockReturnedAttr(Attr.getRange(), S.Context,
|
|
Args[0]));
|
|
}
|
|
|
|
static void handleLocksExcludedAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
|
|
if (!checkAttributeAtLeastNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<FunctionTemplateDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_thread_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ThreadExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
// check that all arguments are lockable objects
|
|
SmallVector<Expr*, 1> Args;
|
|
checkAttrArgsAreLockableObjs(S, D, Attr, Args);
|
|
unsigned Size = Args.size();
|
|
if (Size == 0)
|
|
return;
|
|
Expr **StartArg = &Args[0];
|
|
|
|
D->addAttr(::new (S.Context) LocksExcludedAttr(Attr.getRange(), S.Context,
|
|
StartArg, Size));
|
|
}
|
|
|
|
|
|
static void handleExtVectorTypeAttr(Sema &S, Scope *scope, Decl *D,
|
|
const AttributeList &Attr) {
|
|
TypedefNameDecl *tDecl = dyn_cast<TypedefNameDecl>(D);
|
|
if (tDecl == 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef);
|
|
return;
|
|
}
|
|
|
|
QualType curType = tDecl->getUnderlyingType();
|
|
|
|
Expr *sizeExpr;
|
|
|
|
// Special case where the argument is a template id.
|
|
if (Attr.getParameterName()) {
|
|
CXXScopeSpec SS;
|
|
SourceLocation TemplateKWLoc;
|
|
UnqualifiedId id;
|
|
id.setIdentifier(Attr.getParameterName(), Attr.getLoc());
|
|
|
|
ExprResult Size = S.ActOnIdExpression(scope, SS, TemplateKWLoc, id,
|
|
false, false);
|
|
if (Size.isInvalid())
|
|
return;
|
|
|
|
sizeExpr = Size.get();
|
|
} else {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
sizeExpr = Attr.getArg(0);
|
|
}
|
|
|
|
// Instantiate/Install the vector type, and let Sema build the type for us.
|
|
// This will run the reguired checks.
|
|
QualType T = S.BuildExtVectorType(curType, sizeExpr, Attr.getLoc());
|
|
if (!T.isNull()) {
|
|
// FIXME: preserve the old source info.
|
|
tDecl->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(T));
|
|
|
|
// Remember this typedef decl, we will need it later for diagnostics.
|
|
S.ExtVectorDecls.push_back(tDecl);
|
|
}
|
|
}
|
|
|
|
static void handlePackedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (TagDecl *TD = dyn_cast<TagDecl>(D))
|
|
TD->addAttr(::new (S.Context) PackedAttr(Attr.getRange(), S.Context));
|
|
else if (FieldDecl *FD = dyn_cast<FieldDecl>(D)) {
|
|
// If the alignment is less than or equal to 8 bits, the packed attribute
|
|
// has no effect.
|
|
if (!FD->getType()->isDependentType() &&
|
|
!FD->getType()->isIncompleteType() &&
|
|
S.Context.getTypeAlign(FD->getType()) <= 8)
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type)
|
|
<< Attr.getName() << FD->getType();
|
|
else
|
|
FD->addAttr(::new (S.Context) PackedAttr(Attr.getRange(), S.Context));
|
|
} else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
|
|
}
|
|
|
|
static void handleMsStructAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (RecordDecl *RD = dyn_cast<RecordDecl>(D))
|
|
RD->addAttr(::new (S.Context) MsStructAttr(Attr.getRange(), S.Context));
|
|
else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
|
|
}
|
|
|
|
static void handleIBAction(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
// The IBAction attributes only apply to instance methods.
|
|
if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
|
|
if (MD->isInstanceMethod()) {
|
|
D->addAttr(::new (S.Context) IBActionAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
}
|
|
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ibaction) << Attr.getName();
|
|
}
|
|
|
|
static bool checkIBOutletCommon(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// The IBOutlet/IBOutletCollection attributes only apply to instance
|
|
// variables or properties of Objective-C classes. The outlet must also
|
|
// have an object reference type.
|
|
if (const ObjCIvarDecl *VD = dyn_cast<ObjCIvarDecl>(D)) {
|
|
if (!VD->getType()->getAs<ObjCObjectPointerType>()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_iboutlet_object_type)
|
|
<< Attr.getName() << VD->getType() << 0;
|
|
return false;
|
|
}
|
|
}
|
|
else if (const ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(D)) {
|
|
if (!PD->getType()->getAs<ObjCObjectPointerType>()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_iboutlet_object_type)
|
|
<< Attr.getName() << PD->getType() << 1;
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_iboutlet) << Attr.getName();
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handleIBOutlet(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!checkIBOutletCommon(S, D, Attr))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) IBOutletAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleIBOutletCollection(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
|
|
// The iboutletcollection attribute can have zero or one arguments.
|
|
if (Attr.getParameterName() && Attr.getNumArgs() > 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
if (!checkIBOutletCommon(S, D, Attr))
|
|
return;
|
|
|
|
IdentifierInfo *II = Attr.getParameterName();
|
|
if (!II)
|
|
II = &S.Context.Idents.get("NSObject");
|
|
|
|
ParsedType TypeRep = S.getTypeName(*II, Attr.getLoc(),
|
|
S.getScopeForContext(D->getDeclContext()->getParent()));
|
|
if (!TypeRep) {
|
|
S.Diag(Attr.getLoc(), diag::err_iboutletcollection_type) << II;
|
|
return;
|
|
}
|
|
QualType QT = TypeRep.get();
|
|
// Diagnose use of non-object type in iboutletcollection attribute.
|
|
// FIXME. Gnu attribute extension ignores use of builtin types in
|
|
// attributes. So, __attribute__((iboutletcollection(char))) will be
|
|
// treated as __attribute__((iboutletcollection())).
|
|
if (!QT->isObjCIdType() && !QT->isObjCObjectType()) {
|
|
S.Diag(Attr.getLoc(), diag::err_iboutletcollection_type) << II;
|
|
return;
|
|
}
|
|
D->addAttr(::new (S.Context) IBOutletCollectionAttr(Attr.getRange(),S.Context,
|
|
QT, Attr.getParameterLoc()));
|
|
}
|
|
|
|
static void possibleTransparentUnionPointerType(QualType &T) {
|
|
if (const RecordType *UT = T->getAsUnionType())
|
|
if (UT && UT->getDecl()->hasAttr<TransparentUnionAttr>()) {
|
|
RecordDecl *UD = UT->getDecl();
|
|
for (RecordDecl::field_iterator it = UD->field_begin(),
|
|
itend = UD->field_end(); it != itend; ++it) {
|
|
QualType QT = it->getType();
|
|
if (QT->isAnyPointerType() || QT->isBlockPointerType()) {
|
|
T = QT;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void handleAllocSizeAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!isFunctionOrMethod(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< "alloc_size" << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
if (!checkAttributeAtLeastNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
// In C++ the implicit 'this' function parameter also counts, and they are
|
|
// counted from one.
|
|
bool HasImplicitThisParam = isInstanceMethod(D);
|
|
unsigned NumArgs = getFunctionOrMethodNumArgs(D) + HasImplicitThisParam;
|
|
|
|
SmallVector<unsigned, 8> SizeArgs;
|
|
|
|
for (AttributeList::arg_iterator I = Attr.arg_begin(),
|
|
E = Attr.arg_end(); I!=E; ++I) {
|
|
// The argument must be an integer constant expression.
|
|
Expr *Ex = *I;
|
|
llvm::APSInt ArgNum;
|
|
if (Ex->isTypeDependent() || Ex->isValueDependent() ||
|
|
!Ex->isIntegerConstantExpr(ArgNum, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< "alloc_size" << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
uint64_t x = ArgNum.getZExtValue();
|
|
|
|
if (x < 1 || x > NumArgs) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
|
|
<< "alloc_size" << I.getArgNum() << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
--x;
|
|
if (HasImplicitThisParam) {
|
|
if (x == 0) {
|
|
S.Diag(Attr.getLoc(),
|
|
diag::err_attribute_invalid_implicit_this_argument)
|
|
<< "alloc_size" << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
--x;
|
|
}
|
|
|
|
// check if the function argument is of an integer type
|
|
QualType T = getFunctionOrMethodArgType(D, x).getNonReferenceType();
|
|
if (!T->isIntegerType()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< "alloc_size" << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
SizeArgs.push_back(x);
|
|
}
|
|
|
|
// check if the function returns a pointer
|
|
if (!getFunctionType(D)->getResultType()->isAnyPointerType()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_ns_attribute_wrong_return_type)
|
|
<< "alloc_size" << 0 /*function*/<< 1 /*pointer*/ << D->getSourceRange();
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) AllocSizeAttr(Attr.getRange(), S.Context,
|
|
SizeArgs.data(), SizeArgs.size()));
|
|
}
|
|
|
|
static void handleNonNullAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// GCC ignores the nonnull attribute on K&R style function prototypes, so we
|
|
// ignore it as well
|
|
if (!isFunctionOrMethod(D) || !hasFunctionProto(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
// In C++ the implicit 'this' function parameter also counts, and they are
|
|
// counted from one.
|
|
bool HasImplicitThisParam = isInstanceMethod(D);
|
|
unsigned NumArgs = getFunctionOrMethodNumArgs(D) + HasImplicitThisParam;
|
|
|
|
// The nonnull attribute only applies to pointers.
|
|
SmallVector<unsigned, 10> NonNullArgs;
|
|
|
|
for (AttributeList::arg_iterator I=Attr.arg_begin(),
|
|
E=Attr.arg_end(); I!=E; ++I) {
|
|
|
|
|
|
// The argument must be an integer constant expression.
|
|
Expr *Ex = *I;
|
|
llvm::APSInt ArgNum(32);
|
|
if (Ex->isTypeDependent() || Ex->isValueDependent() ||
|
|
!Ex->isIntegerConstantExpr(ArgNum, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< "nonnull" << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
unsigned x = (unsigned) ArgNum.getZExtValue();
|
|
|
|
if (x < 1 || x > NumArgs) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
|
|
<< "nonnull" << I.getArgNum() << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
--x;
|
|
if (HasImplicitThisParam) {
|
|
if (x == 0) {
|
|
S.Diag(Attr.getLoc(),
|
|
diag::err_attribute_invalid_implicit_this_argument)
|
|
<< "nonnull" << Ex->getSourceRange();
|
|
return;
|
|
}
|
|
--x;
|
|
}
|
|
|
|
// Is the function argument a pointer type?
|
|
QualType T = getFunctionOrMethodArgType(D, x).getNonReferenceType();
|
|
possibleTransparentUnionPointerType(T);
|
|
|
|
if (!T->isAnyPointerType() && !T->isBlockPointerType()) {
|
|
// FIXME: Should also highlight argument in decl.
|
|
S.Diag(Attr.getLoc(), diag::warn_nonnull_pointers_only)
|
|
<< "nonnull" << Ex->getSourceRange();
|
|
continue;
|
|
}
|
|
|
|
NonNullArgs.push_back(x);
|
|
}
|
|
|
|
// If no arguments were specified to __attribute__((nonnull)) then all pointer
|
|
// arguments have a nonnull attribute.
|
|
if (NonNullArgs.empty()) {
|
|
for (unsigned I = 0, E = getFunctionOrMethodNumArgs(D); I != E; ++I) {
|
|
QualType T = getFunctionOrMethodArgType(D, I).getNonReferenceType();
|
|
possibleTransparentUnionPointerType(T);
|
|
if (T->isAnyPointerType() || T->isBlockPointerType())
|
|
NonNullArgs.push_back(I);
|
|
}
|
|
|
|
// No pointer arguments?
|
|
if (NonNullArgs.empty()) {
|
|
// Warn the trivial case only if attribute is not coming from a
|
|
// macro instantiation.
|
|
if (Attr.getLoc().isFileID())
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers);
|
|
return;
|
|
}
|
|
}
|
|
|
|
unsigned* start = &NonNullArgs[0];
|
|
unsigned size = NonNullArgs.size();
|
|
llvm::array_pod_sort(start, start + size);
|
|
D->addAttr(::new (S.Context) NonNullAttr(Attr.getRange(), S.Context, start,
|
|
size));
|
|
}
|
|
|
|
static void handleOwnershipAttr(Sema &S, Decl *D, const AttributeList &AL) {
|
|
// This attribute must be applied to a function declaration.
|
|
// The first argument to the attribute must be a string,
|
|
// the name of the resource, for example "malloc".
|
|
// The following arguments must be argument indexes, the arguments must be
|
|
// of integer type for Returns, otherwise of pointer type.
|
|
// The difference between Holds and Takes is that a pointer may still be used
|
|
// after being held. free() should be __attribute((ownership_takes)), whereas
|
|
// a list append function may well be __attribute((ownership_holds)).
|
|
|
|
if (!AL.getParameterName()) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< AL.getName()->getName() << 1;
|
|
return;
|
|
}
|
|
// Figure out our Kind, and check arguments while we're at it.
|
|
OwnershipAttr::OwnershipKind K;
|
|
switch (AL.getKind()) {
|
|
case AttributeList::AT_ownership_takes:
|
|
K = OwnershipAttr::Takes;
|
|
if (AL.getNumArgs() < 1) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments) << 2;
|
|
return;
|
|
}
|
|
break;
|
|
case AttributeList::AT_ownership_holds:
|
|
K = OwnershipAttr::Holds;
|
|
if (AL.getNumArgs() < 1) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments) << 2;
|
|
return;
|
|
}
|
|
break;
|
|
case AttributeList::AT_ownership_returns:
|
|
K = OwnershipAttr::Returns;
|
|
if (AL.getNumArgs() > 1) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments)
|
|
<< AL.getNumArgs() + 1;
|
|
return;
|
|
}
|
|
break;
|
|
default:
|
|
// This should never happen given how we are called.
|
|
llvm_unreachable("Unknown ownership attribute");
|
|
}
|
|
|
|
if (!isFunction(D) || !hasFunctionProto(D)) {
|
|
S.Diag(AL.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< AL.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
// In C++ the implicit 'this' function parameter also counts, and they are
|
|
// counted from one.
|
|
bool HasImplicitThisParam = isInstanceMethod(D);
|
|
unsigned NumArgs = getFunctionOrMethodNumArgs(D) + HasImplicitThisParam;
|
|
|
|
StringRef Module = AL.getParameterName()->getName();
|
|
|
|
// Normalize the argument, __foo__ becomes foo.
|
|
if (Module.startswith("__") && Module.endswith("__"))
|
|
Module = Module.substr(2, Module.size() - 4);
|
|
|
|
SmallVector<unsigned, 10> OwnershipArgs;
|
|
|
|
for (AttributeList::arg_iterator I = AL.arg_begin(), E = AL.arg_end(); I != E;
|
|
++I) {
|
|
|
|
Expr *IdxExpr = *I;
|
|
llvm::APSInt ArgNum(32);
|
|
if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent()
|
|
|| !IdxExpr->isIntegerConstantExpr(ArgNum, S.Context)) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< AL.getName()->getName() << IdxExpr->getSourceRange();
|
|
continue;
|
|
}
|
|
|
|
unsigned x = (unsigned) ArgNum.getZExtValue();
|
|
|
|
if (x > NumArgs || x < 1) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_argument_out_of_bounds)
|
|
<< AL.getName()->getName() << x << IdxExpr->getSourceRange();
|
|
continue;
|
|
}
|
|
--x;
|
|
if (HasImplicitThisParam) {
|
|
if (x == 0) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_invalid_implicit_this_argument)
|
|
<< "ownership" << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
--x;
|
|
}
|
|
|
|
switch (K) {
|
|
case OwnershipAttr::Takes:
|
|
case OwnershipAttr::Holds: {
|
|
// Is the function argument a pointer type?
|
|
QualType T = getFunctionOrMethodArgType(D, x);
|
|
if (!T->isAnyPointerType() && !T->isBlockPointerType()) {
|
|
// FIXME: Should also highlight argument in decl.
|
|
S.Diag(AL.getLoc(), diag::err_ownership_type)
|
|
<< ((K==OwnershipAttr::Takes)?"ownership_takes":"ownership_holds")
|
|
<< "pointer"
|
|
<< IdxExpr->getSourceRange();
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
case OwnershipAttr::Returns: {
|
|
if (AL.getNumArgs() > 1) {
|
|
// Is the function argument an integer type?
|
|
Expr *IdxExpr = AL.getArg(0);
|
|
llvm::APSInt ArgNum(32);
|
|
if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent()
|
|
|| !IdxExpr->isIntegerConstantExpr(ArgNum, S.Context)) {
|
|
S.Diag(AL.getLoc(), diag::err_ownership_type)
|
|
<< "ownership_returns" << "integer"
|
|
<< IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
} // switch
|
|
|
|
// Check we don't have a conflict with another ownership attribute.
|
|
for (specific_attr_iterator<OwnershipAttr>
|
|
i = D->specific_attr_begin<OwnershipAttr>(),
|
|
e = D->specific_attr_end<OwnershipAttr>();
|
|
i != e; ++i) {
|
|
if ((*i)->getOwnKind() != K) {
|
|
for (const unsigned *I = (*i)->args_begin(), *E = (*i)->args_end();
|
|
I!=E; ++I) {
|
|
if (x == *I) {
|
|
S.Diag(AL.getLoc(), diag::err_attributes_are_not_compatible)
|
|
<< AL.getName()->getName() << "ownership_*";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
OwnershipArgs.push_back(x);
|
|
}
|
|
|
|
unsigned* start = OwnershipArgs.data();
|
|
unsigned size = OwnershipArgs.size();
|
|
llvm::array_pod_sort(start, start + size);
|
|
|
|
if (K != OwnershipAttr::Returns && OwnershipArgs.empty()) {
|
|
S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments) << 2;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) OwnershipAttr(AL.getLoc(), S.Context, K, Module,
|
|
start, size));
|
|
}
|
|
|
|
/// Whether this declaration has internal linkage for the purposes of
|
|
/// things that want to complain about things not have internal linkage.
|
|
static bool hasEffectivelyInternalLinkage(NamedDecl *D) {
|
|
switch (D->getLinkage()) {
|
|
case NoLinkage:
|
|
case InternalLinkage:
|
|
return true;
|
|
|
|
// Template instantiations that go from external to unique-external
|
|
// shouldn't get diagnosed.
|
|
case UniqueExternalLinkage:
|
|
return true;
|
|
|
|
case ExternalLinkage:
|
|
return false;
|
|
}
|
|
llvm_unreachable("unknown linkage kind!");
|
|
}
|
|
|
|
static void handleWeakRefAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (Attr.getNumArgs() > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
if (!isa<VarDecl>(D) && !isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableOrFunction;
|
|
return;
|
|
}
|
|
|
|
NamedDecl *nd = cast<NamedDecl>(D);
|
|
|
|
// gcc rejects
|
|
// class c {
|
|
// static int a __attribute__((weakref ("v2")));
|
|
// static int b() __attribute__((weakref ("f3")));
|
|
// };
|
|
// and ignores the attributes of
|
|
// void f(void) {
|
|
// static int a __attribute__((weakref ("v2")));
|
|
// }
|
|
// we reject them
|
|
const DeclContext *Ctx = D->getDeclContext()->getRedeclContext();
|
|
if (!Ctx->isFileContext()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_weakref_not_global_context) <<
|
|
nd->getNameAsString();
|
|
return;
|
|
}
|
|
|
|
// The GCC manual says
|
|
//
|
|
// At present, a declaration to which `weakref' is attached can only
|
|
// be `static'.
|
|
//
|
|
// It also says
|
|
//
|
|
// Without a TARGET,
|
|
// given as an argument to `weakref' or to `alias', `weakref' is
|
|
// equivalent to `weak'.
|
|
//
|
|
// gcc 4.4.1 will accept
|
|
// int a7 __attribute__((weakref));
|
|
// as
|
|
// int a7 __attribute__((weak));
|
|
// This looks like a bug in gcc. We reject that for now. We should revisit
|
|
// it if this behaviour is actually used.
|
|
|
|
if (!hasEffectivelyInternalLinkage(nd)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_weakref_not_static);
|
|
return;
|
|
}
|
|
|
|
// GCC rejects
|
|
// static ((alias ("y"), weakref)).
|
|
// Should we? How to check that weakref is before or after alias?
|
|
|
|
if (Attr.getNumArgs() == 1) {
|
|
Expr *Arg = Attr.getArg(0);
|
|
Arg = Arg->IgnoreParenCasts();
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
|
|
if (!Str || !Str->isAscii()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "weakref" << 1;
|
|
return;
|
|
}
|
|
// GCC will accept anything as the argument of weakref. Should we
|
|
// check for an existing decl?
|
|
D->addAttr(::new (S.Context) AliasAttr(Attr.getRange(), S.Context,
|
|
Str->getString()));
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) WeakRefAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleAliasAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
Expr *Arg = Attr.getArg(0);
|
|
Arg = Arg->IgnoreParenCasts();
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
|
|
if (!Str || !Str->isAscii()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "alias" << 1;
|
|
return;
|
|
}
|
|
|
|
if (S.Context.getTargetInfo().getTriple().isOSDarwin()) {
|
|
S.Diag(Attr.getLoc(), diag::err_alias_not_supported_on_darwin);
|
|
return;
|
|
}
|
|
|
|
// FIXME: check if target symbol exists in current file
|
|
|
|
D->addAttr(::new (S.Context) AliasAttr(Attr.getRange(), S.Context,
|
|
Str->getString()));
|
|
}
|
|
|
|
static void handleMinSizeAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<ObjCMethodDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) MinSizeAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleColdAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
if (D->hasAttr<HotAttr>()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible)
|
|
<< Attr.getName() << "hot";
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ColdAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleHotAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
if (D->hasAttr<ColdAttr>()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible)
|
|
<< Attr.getName() << "cold";
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) HotAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNakedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NakedAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleAlwaysInlineAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) AlwaysInlineAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleTLSModelAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (Attr.getNumArgs() != 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
Expr *Arg = Attr.getArg(0);
|
|
Arg = Arg->IgnoreParenCasts();
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
|
|
// Check that it is a string.
|
|
if (!Str) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_not_string) << "tls_model";
|
|
return;
|
|
}
|
|
|
|
if (!isa<VarDecl>(D) || !cast<VarDecl>(D)->isThreadSpecified()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedTLSVar;
|
|
return;
|
|
}
|
|
|
|
// Check that the value.
|
|
StringRef Model = Str->getString();
|
|
if (Model != "global-dynamic" && Model != "local-dynamic"
|
|
&& Model != "initial-exec" && Model != "local-exec") {
|
|
S.Diag(Attr.getLoc(), diag::err_attr_tlsmodel_arg);
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) TLSModelAttr(Attr.getRange(), S.Context,
|
|
Model));
|
|
}
|
|
|
|
static void handleMallocAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
|
|
QualType RetTy = FD->getResultType();
|
|
if (RetTy->isAnyPointerType() || RetTy->isBlockPointerType()) {
|
|
D->addAttr(::new (S.Context) MallocAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
}
|
|
}
|
|
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_malloc_pointer_only);
|
|
}
|
|
|
|
static void handleMayAliasAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) MayAliasAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNoCommonAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
if (isa<VarDecl>(D))
|
|
D->addAttr(::new (S.Context) NoCommonAttr(Attr.getRange(), S.Context));
|
|
else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
}
|
|
|
|
static void handleCommonAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
assert(!Attr.isInvalid());
|
|
if (isa<VarDecl>(D))
|
|
D->addAttr(::new (S.Context) CommonAttr(Attr.getRange(), S.Context));
|
|
else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
}
|
|
|
|
static void handleNoReturnAttr(Sema &S, Decl *D, const AttributeList &attr) {
|
|
if (hasDeclarator(D)) return;
|
|
|
|
if (S.CheckNoReturnAttr(attr)) return;
|
|
|
|
if (!isa<ObjCMethodDecl>(D)) {
|
|
S.Diag(attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NoReturnAttr(attr.getRange(), S.Context));
|
|
}
|
|
|
|
bool Sema::CheckNoReturnAttr(const AttributeList &attr) {
|
|
if (attr.hasParameterOrArguments()) {
|
|
Diag(attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void handleAnalyzerNoReturnAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
|
|
// The checking path for 'noreturn' and 'analyzer_noreturn' are different
|
|
// because 'analyzer_noreturn' does not impact the type.
|
|
|
|
if(!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isFunctionOrMethod(D) && !isa<BlockDecl>(D)) {
|
|
ValueDecl *VD = dyn_cast<ValueDecl>(D);
|
|
if (VD == 0 || (!VD->getType()->isBlockPointerType()
|
|
&& !VD->getType()->isFunctionPointerType())) {
|
|
S.Diag(Attr.getLoc(),
|
|
Attr.isCXX0XAttribute() ? diag::err_attribute_wrong_decl_type
|
|
: diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionMethodOrBlock;
|
|
return;
|
|
}
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) AnalyzerNoReturnAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
// PS3 PPU-specific.
|
|
static void handleVecReturnAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
/*
|
|
Returning a Vector Class in Registers
|
|
|
|
According to the PPU ABI specifications, a class with a single member of
|
|
vector type is returned in memory when used as the return value of a function.
|
|
This results in inefficient code when implementing vector classes. To return
|
|
the value in a single vector register, add the vecreturn attribute to the
|
|
class definition. This attribute is also applicable to struct types.
|
|
|
|
Example:
|
|
|
|
struct Vector
|
|
{
|
|
__vector float xyzw;
|
|
} __attribute__((vecreturn));
|
|
|
|
Vector Add(Vector lhs, Vector rhs)
|
|
{
|
|
Vector result;
|
|
result.xyzw = vec_add(lhs.xyzw, rhs.xyzw);
|
|
return result; // This will be returned in a register
|
|
}
|
|
*/
|
|
if (!isa<RecordDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedClass;
|
|
return;
|
|
}
|
|
|
|
if (D->getAttr<VecReturnAttr>()) {
|
|
S.Diag(Attr.getLoc(), diag::err_repeat_attribute) << "vecreturn";
|
|
return;
|
|
}
|
|
|
|
RecordDecl *record = cast<RecordDecl>(D);
|
|
int count = 0;
|
|
|
|
if (!isa<CXXRecordDecl>(record)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_vecreturn_only_vector_member);
|
|
return;
|
|
}
|
|
|
|
if (!cast<CXXRecordDecl>(record)->isPOD()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_vecreturn_only_pod_record);
|
|
return;
|
|
}
|
|
|
|
for (RecordDecl::field_iterator iter = record->field_begin();
|
|
iter != record->field_end(); iter++) {
|
|
if ((count == 1) || !iter->getType()->isVectorType()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_vecreturn_only_vector_member);
|
|
return;
|
|
}
|
|
count++;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) VecReturnAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleDependencyAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!isFunctionOrMethod(D) && !isa<ParmVarDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionMethodOrParameter;
|
|
return;
|
|
}
|
|
// FIXME: Actually store the attribute on the declaration
|
|
}
|
|
|
|
static void handleUnusedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isa<VarDecl>(D) && !isa<ObjCIvarDecl>(D) && !isFunctionOrMethod(D) &&
|
|
!isa<TypeDecl>(D) && !isa<LabelDecl>(D) && !isa<FieldDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableFunctionOrLabel;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) UnusedAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleReturnsTwiceAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ReturnsTwiceAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleUsedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
|
|
if (VD->hasLocalStorage() || VD->hasExternalStorage()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "used";
|
|
return;
|
|
}
|
|
} else if (!isFunctionOrMethod(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableOrFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) UsedAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleConstructorAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
int priority = 65535; // FIXME: Do not hardcode such constants.
|
|
if (Attr.getNumArgs() > 0) {
|
|
Expr *E = Attr.getArg(0);
|
|
llvm::APSInt Idx(32);
|
|
if (E->isTypeDependent() || E->isValueDependent() ||
|
|
!E->isIntegerConstantExpr(Idx, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "constructor" << 1 << E->getSourceRange();
|
|
return;
|
|
}
|
|
priority = Idx.getZExtValue();
|
|
}
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ConstructorAttr(Attr.getRange(), S.Context,
|
|
priority));
|
|
}
|
|
|
|
static void handleDestructorAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
int priority = 65535; // FIXME: Do not hardcode such constants.
|
|
if (Attr.getNumArgs() > 0) {
|
|
Expr *E = Attr.getArg(0);
|
|
llvm::APSInt Idx(32);
|
|
if (E->isTypeDependent() || E->isValueDependent() ||
|
|
!E->isIntegerConstantExpr(Idx, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "destructor" << 1 << E->getSourceRange();
|
|
return;
|
|
}
|
|
priority = Idx.getZExtValue();
|
|
}
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) DestructorAttr(Attr.getRange(), S.Context,
|
|
priority));
|
|
}
|
|
|
|
template <typename AttrTy>
|
|
static void handleAttrWithMessage(Sema &S, Decl *D, const AttributeList &Attr,
|
|
const char *Name) {
|
|
unsigned NumArgs = Attr.getNumArgs();
|
|
if (NumArgs > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
// Handle the case where the attribute has a text message.
|
|
StringRef Str;
|
|
if (NumArgs == 1) {
|
|
StringLiteral *SE = dyn_cast<StringLiteral>(Attr.getArg(0));
|
|
if (!SE) {
|
|
S.Diag(Attr.getArg(0)->getLocStart(), diag::err_attribute_not_string)
|
|
<< Name;
|
|
return;
|
|
}
|
|
Str = SE->getString();
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) AttrTy(Attr.getRange(), S.Context, Str));
|
|
}
|
|
|
|
static void handleArcWeakrefUnavailableAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
unsigned NumArgs = Attr.getNumArgs();
|
|
if (NumArgs > 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ArcWeakrefUnavailableAttr(
|
|
Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleObjCRootClassAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!isa<ObjCInterfaceDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_requires_objc_interface);
|
|
return;
|
|
}
|
|
|
|
unsigned NumArgs = Attr.getNumArgs();
|
|
if (NumArgs > 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ObjCRootClassAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleObjCRequiresPropertyDefsAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!isa<ObjCInterfaceDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_suppress_autosynthesis);
|
|
return;
|
|
}
|
|
|
|
unsigned NumArgs = Attr.getNumArgs();
|
|
if (NumArgs > 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ObjCRequiresPropertyDefsAttr(
|
|
Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static bool checkAvailabilityAttr(Sema &S, SourceRange Range,
|
|
IdentifierInfo *Platform,
|
|
VersionTuple Introduced,
|
|
VersionTuple Deprecated,
|
|
VersionTuple Obsoleted) {
|
|
StringRef PlatformName
|
|
= AvailabilityAttr::getPrettyPlatformName(Platform->getName());
|
|
if (PlatformName.empty())
|
|
PlatformName = Platform->getName();
|
|
|
|
// Ensure that Introduced <= Deprecated <= Obsoleted (although not all
|
|
// of these steps are needed).
|
|
if (!Introduced.empty() && !Deprecated.empty() &&
|
|
!(Introduced <= Deprecated)) {
|
|
S.Diag(Range.getBegin(), diag::warn_availability_version_ordering)
|
|
<< 1 << PlatformName << Deprecated.getAsString()
|
|
<< 0 << Introduced.getAsString();
|
|
return true;
|
|
}
|
|
|
|
if (!Introduced.empty() && !Obsoleted.empty() &&
|
|
!(Introduced <= Obsoleted)) {
|
|
S.Diag(Range.getBegin(), diag::warn_availability_version_ordering)
|
|
<< 2 << PlatformName << Obsoleted.getAsString()
|
|
<< 0 << Introduced.getAsString();
|
|
return true;
|
|
}
|
|
|
|
if (!Deprecated.empty() && !Obsoleted.empty() &&
|
|
!(Deprecated <= Obsoleted)) {
|
|
S.Diag(Range.getBegin(), diag::warn_availability_version_ordering)
|
|
<< 2 << PlatformName << Obsoleted.getAsString()
|
|
<< 1 << Deprecated.getAsString();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
AvailabilityAttr *Sema::mergeAvailabilityAttr(Decl *D, SourceRange Range,
|
|
IdentifierInfo *Platform,
|
|
VersionTuple Introduced,
|
|
VersionTuple Deprecated,
|
|
VersionTuple Obsoleted,
|
|
bool IsUnavailable,
|
|
StringRef Message) {
|
|
VersionTuple MergedIntroduced = Introduced;
|
|
VersionTuple MergedDeprecated = Deprecated;
|
|
VersionTuple MergedObsoleted = Obsoleted;
|
|
bool FoundAny = false;
|
|
|
|
if (D->hasAttrs()) {
|
|
AttrVec &Attrs = D->getAttrs();
|
|
for (unsigned i = 0, e = Attrs.size(); i != e;) {
|
|
const AvailabilityAttr *OldAA = dyn_cast<AvailabilityAttr>(Attrs[i]);
|
|
if (!OldAA) {
|
|
++i;
|
|
continue;
|
|
}
|
|
|
|
IdentifierInfo *OldPlatform = OldAA->getPlatform();
|
|
if (OldPlatform != Platform) {
|
|
++i;
|
|
continue;
|
|
}
|
|
|
|
FoundAny = true;
|
|
VersionTuple OldIntroduced = OldAA->getIntroduced();
|
|
VersionTuple OldDeprecated = OldAA->getDeprecated();
|
|
VersionTuple OldObsoleted = OldAA->getObsoleted();
|
|
bool OldIsUnavailable = OldAA->getUnavailable();
|
|
StringRef OldMessage = OldAA->getMessage();
|
|
|
|
if ((!OldIntroduced.empty() && !Introduced.empty() &&
|
|
OldIntroduced != Introduced) ||
|
|
(!OldDeprecated.empty() && !Deprecated.empty() &&
|
|
OldDeprecated != Deprecated) ||
|
|
(!OldObsoleted.empty() && !Obsoleted.empty() &&
|
|
OldObsoleted != Obsoleted) ||
|
|
(OldIsUnavailable != IsUnavailable) ||
|
|
(OldMessage != Message)) {
|
|
Diag(OldAA->getLocation(), diag::warn_mismatched_availability);
|
|
Diag(Range.getBegin(), diag::note_previous_attribute);
|
|
Attrs.erase(Attrs.begin() + i);
|
|
--e;
|
|
continue;
|
|
}
|
|
|
|
VersionTuple MergedIntroduced2 = MergedIntroduced;
|
|
VersionTuple MergedDeprecated2 = MergedDeprecated;
|
|
VersionTuple MergedObsoleted2 = MergedObsoleted;
|
|
|
|
if (MergedIntroduced2.empty())
|
|
MergedIntroduced2 = OldIntroduced;
|
|
if (MergedDeprecated2.empty())
|
|
MergedDeprecated2 = OldDeprecated;
|
|
if (MergedObsoleted2.empty())
|
|
MergedObsoleted2 = OldObsoleted;
|
|
|
|
if (checkAvailabilityAttr(*this, OldAA->getRange(), Platform,
|
|
MergedIntroduced2, MergedDeprecated2,
|
|
MergedObsoleted2)) {
|
|
Attrs.erase(Attrs.begin() + i);
|
|
--e;
|
|
continue;
|
|
}
|
|
|
|
MergedIntroduced = MergedIntroduced2;
|
|
MergedDeprecated = MergedDeprecated2;
|
|
MergedObsoleted = MergedObsoleted2;
|
|
++i;
|
|
}
|
|
}
|
|
|
|
if (FoundAny &&
|
|
MergedIntroduced == Introduced &&
|
|
MergedDeprecated == Deprecated &&
|
|
MergedObsoleted == Obsoleted)
|
|
return NULL;
|
|
|
|
if (!checkAvailabilityAttr(*this, Range, Platform, MergedIntroduced,
|
|
MergedDeprecated, MergedObsoleted)) {
|
|
return ::new (Context) AvailabilityAttr(Range, Context, Platform,
|
|
Introduced, Deprecated,
|
|
Obsoleted, IsUnavailable, Message);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void handleAvailabilityAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
IdentifierInfo *Platform = Attr.getParameterName();
|
|
SourceLocation PlatformLoc = Attr.getParameterLoc();
|
|
|
|
if (AvailabilityAttr::getPrettyPlatformName(Platform->getName()).empty())
|
|
S.Diag(PlatformLoc, diag::warn_availability_unknown_platform)
|
|
<< Platform;
|
|
|
|
AvailabilityChange Introduced = Attr.getAvailabilityIntroduced();
|
|
AvailabilityChange Deprecated = Attr.getAvailabilityDeprecated();
|
|
AvailabilityChange Obsoleted = Attr.getAvailabilityObsoleted();
|
|
bool IsUnavailable = Attr.getUnavailableLoc().isValid();
|
|
StringRef Str;
|
|
const StringLiteral *SE =
|
|
dyn_cast_or_null<const StringLiteral>(Attr.getMessageExpr());
|
|
if (SE)
|
|
Str = SE->getString();
|
|
|
|
AvailabilityAttr *NewAttr = S.mergeAvailabilityAttr(D, Attr.getRange(),
|
|
Platform,
|
|
Introduced.Version,
|
|
Deprecated.Version,
|
|
Obsoleted.Version,
|
|
IsUnavailable, Str);
|
|
if (NewAttr)
|
|
D->addAttr(NewAttr);
|
|
}
|
|
|
|
VisibilityAttr *Sema::mergeVisibilityAttr(Decl *D, SourceRange Range,
|
|
VisibilityAttr::VisibilityType Vis) {
|
|
if (isa<TypedefNameDecl>(D)) {
|
|
Diag(Range.getBegin(), diag::warn_attribute_ignored) << "visibility";
|
|
return NULL;
|
|
}
|
|
VisibilityAttr *ExistingAttr = D->getAttr<VisibilityAttr>();
|
|
if (ExistingAttr) {
|
|
VisibilityAttr::VisibilityType ExistingVis = ExistingAttr->getVisibility();
|
|
if (ExistingVis == Vis)
|
|
return NULL;
|
|
Diag(ExistingAttr->getLocation(), diag::err_mismatched_visibility);
|
|
Diag(Range.getBegin(), diag::note_previous_attribute);
|
|
D->dropAttr<VisibilityAttr>();
|
|
}
|
|
return ::new (Context) VisibilityAttr(Range, Context, Vis);
|
|
}
|
|
|
|
static void handleVisibilityAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if(!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
Expr *Arg = Attr.getArg(0);
|
|
Arg = Arg->IgnoreParenCasts();
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
|
|
if (!Str || !Str->isAscii()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "visibility" << 1;
|
|
return;
|
|
}
|
|
|
|
StringRef TypeStr = Str->getString();
|
|
VisibilityAttr::VisibilityType type;
|
|
|
|
if (TypeStr == "default")
|
|
type = VisibilityAttr::Default;
|
|
else if (TypeStr == "hidden")
|
|
type = VisibilityAttr::Hidden;
|
|
else if (TypeStr == "internal")
|
|
type = VisibilityAttr::Hidden; // FIXME
|
|
else if (TypeStr == "protected") {
|
|
// Complain about attempts to use protected visibility on targets
|
|
// (like Darwin) that don't support it.
|
|
if (!S.Context.getTargetInfo().hasProtectedVisibility()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_protected_visibility);
|
|
type = VisibilityAttr::Default;
|
|
} else {
|
|
type = VisibilityAttr::Protected;
|
|
}
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr;
|
|
return;
|
|
}
|
|
|
|
VisibilityAttr *NewAttr = S.mergeVisibilityAttr(D, Attr.getRange(), type);
|
|
if (NewAttr)
|
|
D->addAttr(NewAttr);
|
|
}
|
|
|
|
static void handleObjCMethodFamilyAttr(Sema &S, Decl *decl,
|
|
const AttributeList &Attr) {
|
|
ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(decl);
|
|
if (!method) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< ExpectedMethod;
|
|
return;
|
|
}
|
|
|
|
if (Attr.getNumArgs() != 0 || !Attr.getParameterName()) {
|
|
if (!Attr.getParameterName() && Attr.getNumArgs() == 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "objc_method_family" << 1;
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
}
|
|
Attr.setInvalid();
|
|
return;
|
|
}
|
|
|
|
StringRef param = Attr.getParameterName()->getName();
|
|
ObjCMethodFamilyAttr::FamilyKind family;
|
|
if (param == "none")
|
|
family = ObjCMethodFamilyAttr::OMF_None;
|
|
else if (param == "alloc")
|
|
family = ObjCMethodFamilyAttr::OMF_alloc;
|
|
else if (param == "copy")
|
|
family = ObjCMethodFamilyAttr::OMF_copy;
|
|
else if (param == "init")
|
|
family = ObjCMethodFamilyAttr::OMF_init;
|
|
else if (param == "mutableCopy")
|
|
family = ObjCMethodFamilyAttr::OMF_mutableCopy;
|
|
else if (param == "new")
|
|
family = ObjCMethodFamilyAttr::OMF_new;
|
|
else {
|
|
// Just warn and ignore it. This is future-proof against new
|
|
// families being used in system headers.
|
|
S.Diag(Attr.getParameterLoc(), diag::warn_unknown_method_family);
|
|
return;
|
|
}
|
|
|
|
if (family == ObjCMethodFamilyAttr::OMF_init &&
|
|
!method->getResultType()->isObjCObjectPointerType()) {
|
|
S.Diag(method->getLocation(), diag::err_init_method_bad_return_type)
|
|
<< method->getResultType();
|
|
// Ignore the attribute.
|
|
return;
|
|
}
|
|
|
|
method->addAttr(new (S.Context) ObjCMethodFamilyAttr(Attr.getRange(),
|
|
S.Context, family));
|
|
}
|
|
|
|
static void handleObjCExceptionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
ObjCInterfaceDecl *OCI = dyn_cast<ObjCInterfaceDecl>(D);
|
|
if (OCI == 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_requires_objc_interface);
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ObjCExceptionAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleObjCNSObject(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
|
|
QualType T = TD->getUnderlyingType();
|
|
if (!T->isCARCBridgableType()) {
|
|
S.Diag(TD->getLocation(), diag::err_nsobject_attribute);
|
|
return;
|
|
}
|
|
}
|
|
else if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(D)) {
|
|
QualType T = PD->getType();
|
|
if (!T->isCARCBridgableType()) {
|
|
S.Diag(PD->getLocation(), diag::err_nsobject_attribute);
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
// It is okay to include this attribute on properties, e.g.:
|
|
//
|
|
// @property (retain, nonatomic) struct Bork *Q __attribute__((NSObject));
|
|
//
|
|
// In this case it follows tradition and suppresses an error in the above
|
|
// case.
|
|
S.Diag(D->getLocation(), diag::warn_nsobject_attribute);
|
|
}
|
|
D->addAttr(::new (S.Context) ObjCNSObjectAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void
|
|
handleOverloadableAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_overloadable_not_function);
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) OverloadableAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleBlocksAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!Attr.getParameterName()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "blocks" << 1;
|
|
return;
|
|
}
|
|
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
BlocksAttr::BlockType type;
|
|
if (Attr.getParameterName()->isStr("byref"))
|
|
type = BlocksAttr::ByRef;
|
|
else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported)
|
|
<< "blocks" << Attr.getParameterName();
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) BlocksAttr(Attr.getRange(), S.Context, type));
|
|
}
|
|
|
|
static void handleSentinelAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() > 2) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 2;
|
|
return;
|
|
}
|
|
|
|
unsigned sentinel = 0;
|
|
if (Attr.getNumArgs() > 0) {
|
|
Expr *E = Attr.getArg(0);
|
|
llvm::APSInt Idx(32);
|
|
if (E->isTypeDependent() || E->isValueDependent() ||
|
|
!E->isIntegerConstantExpr(Idx, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "sentinel" << 1 << E->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
if (Idx.isSigned() && Idx.isNegative()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero)
|
|
<< E->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
sentinel = Idx.getZExtValue();
|
|
}
|
|
|
|
unsigned nullPos = 0;
|
|
if (Attr.getNumArgs() > 1) {
|
|
Expr *E = Attr.getArg(1);
|
|
llvm::APSInt Idx(32);
|
|
if (E->isTypeDependent() || E->isValueDependent() ||
|
|
!E->isIntegerConstantExpr(Idx, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "sentinel" << 2 << E->getSourceRange();
|
|
return;
|
|
}
|
|
nullPos = Idx.getZExtValue();
|
|
|
|
if ((Idx.isSigned() && Idx.isNegative()) || nullPos > 1) {
|
|
// FIXME: This error message could be improved, it would be nice
|
|
// to say what the bounds actually are.
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_not_zero_or_one)
|
|
<< E->getSourceRange();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
|
|
const FunctionType *FT = FD->getType()->castAs<FunctionType>();
|
|
if (isa<FunctionNoProtoType>(FT)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_named_arguments);
|
|
return;
|
|
}
|
|
|
|
if (!cast<FunctionProtoType>(FT)->isVariadic()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0;
|
|
return;
|
|
}
|
|
} else if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) {
|
|
if (!MD->isVariadic()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 0;
|
|
return;
|
|
}
|
|
} else if (BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
|
|
if (!BD->isVariadic()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << 1;
|
|
return;
|
|
}
|
|
} else if (const VarDecl *V = dyn_cast<VarDecl>(D)) {
|
|
QualType Ty = V->getType();
|
|
if (Ty->isBlockPointerType() || Ty->isFunctionPointerType()) {
|
|
const FunctionType *FT = Ty->isFunctionPointerType() ? getFunctionType(D)
|
|
: Ty->getAs<BlockPointerType>()->getPointeeType()->getAs<FunctionType>();
|
|
if (!cast<FunctionProtoType>(FT)->isVariadic()) {
|
|
int m = Ty->isFunctionPointerType() ? 0 : 1;
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_sentinel_not_variadic) << m;
|
|
return;
|
|
}
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionMethodOrBlock;
|
|
return;
|
|
}
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionMethodOrBlock;
|
|
return;
|
|
}
|
|
D->addAttr(::new (S.Context) SentinelAttr(Attr.getRange(), S.Context, sentinel,
|
|
nullPos));
|
|
}
|
|
|
|
static void handleWarnUnusedResult(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isFunction(D) && !isa<ObjCMethodDecl>(D) && !isa<CXXRecordDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionMethodOrClass;
|
|
return;
|
|
}
|
|
|
|
if (isFunction(D) && getFunctionType(D)->getResultType()->isVoidType()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_void_function_method)
|
|
<< Attr.getName() << 0;
|
|
return;
|
|
}
|
|
if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
|
|
if (MD->getResultType()->isVoidType()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_void_function_method)
|
|
<< Attr.getName() << 1;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) WarnUnusedResultAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleWeakAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isa<VarDecl>(D) && !isa<FunctionDecl>(D)) {
|
|
if (isa<CXXRecordDecl>(D)) {
|
|
D->addAttr(::new (S.Context) WeakAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
}
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableOrFunction;
|
|
return;
|
|
}
|
|
|
|
NamedDecl *nd = cast<NamedDecl>(D);
|
|
|
|
// 'weak' only applies to declarations with external linkage.
|
|
if (hasEffectivelyInternalLinkage(nd)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_weak_static);
|
|
return;
|
|
}
|
|
|
|
nd->addAttr(::new (S.Context) WeakAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleWeakImportAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
// weak_import only applies to variable & function declarations.
|
|
bool isDef = false;
|
|
if (!D->canBeWeakImported(isDef)) {
|
|
if (isDef)
|
|
S.Diag(Attr.getLoc(),
|
|
diag::warn_attribute_weak_import_invalid_on_definition)
|
|
<< "weak_import" << 2 /*variable and function*/;
|
|
else if (isa<ObjCPropertyDecl>(D) || isa<ObjCMethodDecl>(D) ||
|
|
(S.Context.getTargetInfo().getTriple().isOSDarwin() &&
|
|
(isa<ObjCInterfaceDecl>(D) || isa<EnumDecl>(D)))) {
|
|
// Nothing to warn about here.
|
|
} else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableOrFunction;
|
|
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) WeakImportAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
// Handles reqd_work_group_size and work_group_size_hint.
|
|
static void handleWorkGroupSize(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
assert(Attr.getKind() == AttributeList::AT_ReqdWorkGroupSize
|
|
|| Attr.getKind() == AttributeList::AT_WorkGroupSizeHint);
|
|
|
|
// Attribute has 3 arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 3)) return;
|
|
|
|
unsigned WGSize[3];
|
|
for (unsigned i = 0; i < 3; ++i) {
|
|
Expr *E = Attr.getArg(i);
|
|
llvm::APSInt ArgNum(32);
|
|
if (E->isTypeDependent() || E->isValueDependent() ||
|
|
!E->isIntegerConstantExpr(ArgNum, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< Attr.getName()->getName() << E->getSourceRange();
|
|
return;
|
|
}
|
|
WGSize[i] = (unsigned) ArgNum.getZExtValue();
|
|
}
|
|
|
|
if (Attr.getKind() == AttributeList::AT_ReqdWorkGroupSize
|
|
&& D->hasAttr<ReqdWorkGroupSizeAttr>()) {
|
|
ReqdWorkGroupSizeAttr *A = D->getAttr<ReqdWorkGroupSizeAttr>();
|
|
if (!(A->getXDim() == WGSize[0] &&
|
|
A->getYDim() == WGSize[1] &&
|
|
A->getZDim() == WGSize[2])) {
|
|
S.Diag(Attr.getLoc(), diag::warn_duplicate_attribute) <<
|
|
Attr.getName();
|
|
}
|
|
}
|
|
|
|
if (Attr.getKind() == AttributeList::AT_WorkGroupSizeHint
|
|
&& D->hasAttr<WorkGroupSizeHintAttr>()) {
|
|
WorkGroupSizeHintAttr *A = D->getAttr<WorkGroupSizeHintAttr>();
|
|
if (!(A->getXDim() == WGSize[0] &&
|
|
A->getYDim() == WGSize[1] &&
|
|
A->getZDim() == WGSize[2])) {
|
|
S.Diag(Attr.getLoc(), diag::warn_duplicate_attribute) <<
|
|
Attr.getName();
|
|
}
|
|
}
|
|
|
|
if (Attr.getKind() == AttributeList::AT_ReqdWorkGroupSize)
|
|
D->addAttr(::new (S.Context)
|
|
ReqdWorkGroupSizeAttr(Attr.getRange(), S.Context,
|
|
WGSize[0], WGSize[1], WGSize[2]));
|
|
else
|
|
D->addAttr(::new (S.Context)
|
|
WorkGroupSizeHintAttr(Attr.getRange(), S.Context,
|
|
WGSize[0], WGSize[1], WGSize[2]));
|
|
}
|
|
|
|
SectionAttr *Sema::mergeSectionAttr(Decl *D, SourceRange Range,
|
|
StringRef Name) {
|
|
if (SectionAttr *ExistingAttr = D->getAttr<SectionAttr>()) {
|
|
if (ExistingAttr->getName() == Name)
|
|
return NULL;
|
|
Diag(ExistingAttr->getLocation(), diag::warn_mismatched_section);
|
|
Diag(Range.getBegin(), diag::note_previous_attribute);
|
|
return NULL;
|
|
}
|
|
return ::new (Context) SectionAttr(Range, Context, Name);
|
|
}
|
|
|
|
static void handleSectionAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// Attribute has no arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
// Make sure that there is a string literal as the sections's single
|
|
// argument.
|
|
Expr *ArgExpr = Attr.getArg(0);
|
|
StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr);
|
|
if (!SE) {
|
|
S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) << "section";
|
|
return;
|
|
}
|
|
|
|
// If the target wants to validate the section specifier, make it happen.
|
|
std::string Error = S.Context.getTargetInfo().isValidSectionSpecifier(SE->getString());
|
|
if (!Error.empty()) {
|
|
S.Diag(SE->getLocStart(), diag::err_attribute_section_invalid_for_target)
|
|
<< Error;
|
|
return;
|
|
}
|
|
|
|
// This attribute cannot be applied to local variables.
|
|
if (isa<VarDecl>(D) && cast<VarDecl>(D)->hasLocalStorage()) {
|
|
S.Diag(SE->getLocStart(), diag::err_attribute_section_local_variable);
|
|
return;
|
|
}
|
|
SectionAttr *NewAttr = S.mergeSectionAttr(D, Attr.getRange(),
|
|
SE->getString());
|
|
if (NewAttr)
|
|
D->addAttr(NewAttr);
|
|
}
|
|
|
|
|
|
static void handleNothrowAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (NoThrowAttr *Existing = D->getAttr<NoThrowAttr>()) {
|
|
if (Existing->getLocation().isInvalid())
|
|
Existing->setRange(Attr.getRange());
|
|
} else {
|
|
D->addAttr(::new (S.Context) NoThrowAttr(Attr.getRange(), S.Context));
|
|
}
|
|
}
|
|
|
|
static void handleConstAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (ConstAttr *Existing = D->getAttr<ConstAttr>()) {
|
|
if (Existing->getLocation().isInvalid())
|
|
Existing->setRange(Attr.getRange());
|
|
} else {
|
|
D->addAttr(::new (S.Context) ConstAttr(Attr.getRange(), S.Context));
|
|
}
|
|
}
|
|
|
|
static void handlePureAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
D->addAttr(::new (S.Context) PureAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleCleanupAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!Attr.getParameterName()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
VarDecl *VD = dyn_cast<VarDecl>(D);
|
|
|
|
if (!VD || !VD->hasLocalStorage()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "cleanup";
|
|
return;
|
|
}
|
|
|
|
// Look up the function
|
|
// FIXME: Lookup probably isn't looking in the right place
|
|
NamedDecl *CleanupDecl
|
|
= S.LookupSingleName(S.TUScope, Attr.getParameterName(),
|
|
Attr.getParameterLoc(), Sema::LookupOrdinaryName);
|
|
if (!CleanupDecl) {
|
|
S.Diag(Attr.getParameterLoc(), diag::err_attribute_cleanup_arg_not_found) <<
|
|
Attr.getParameterName();
|
|
return;
|
|
}
|
|
|
|
FunctionDecl *FD = dyn_cast<FunctionDecl>(CleanupDecl);
|
|
if (!FD) {
|
|
S.Diag(Attr.getParameterLoc(),
|
|
diag::err_attribute_cleanup_arg_not_function)
|
|
<< Attr.getParameterName();
|
|
return;
|
|
}
|
|
|
|
if (FD->getNumParams() != 1) {
|
|
S.Diag(Attr.getParameterLoc(),
|
|
diag::err_attribute_cleanup_func_must_take_one_arg)
|
|
<< Attr.getParameterName();
|
|
return;
|
|
}
|
|
|
|
// We're currently more strict than GCC about what function types we accept.
|
|
// If this ever proves to be a problem it should be easy to fix.
|
|
QualType Ty = S.Context.getPointerType(VD->getType());
|
|
QualType ParamTy = FD->getParamDecl(0)->getType();
|
|
if (S.CheckAssignmentConstraints(FD->getParamDecl(0)->getLocation(),
|
|
ParamTy, Ty) != Sema::Compatible) {
|
|
S.Diag(Attr.getParameterLoc(),
|
|
diag::err_attribute_cleanup_func_arg_incompatible_type) <<
|
|
Attr.getParameterName() << ParamTy << Ty;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CleanupAttr(Attr.getRange(), S.Context, FD));
|
|
S.MarkFunctionReferenced(Attr.getParameterLoc(), FD);
|
|
}
|
|
|
|
/// Handle __attribute__((format_arg((idx)))) attribute based on
|
|
/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
|
|
static void handleFormatArgAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
if (!isFunctionOrMethod(D) || !hasFunctionProto(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
// In C++ the implicit 'this' function parameter also counts, and they are
|
|
// counted from one.
|
|
bool HasImplicitThisParam = isInstanceMethod(D);
|
|
unsigned NumArgs = getFunctionOrMethodNumArgs(D) + HasImplicitThisParam;
|
|
unsigned FirstIdx = 1;
|
|
|
|
// checks for the 2nd argument
|
|
Expr *IdxExpr = Attr.getArg(0);
|
|
llvm::APSInt Idx(32);
|
|
if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent() ||
|
|
!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "format" << 2 << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
|
|
<< "format" << 2 << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
unsigned ArgIdx = Idx.getZExtValue() - 1;
|
|
|
|
if (HasImplicitThisParam) {
|
|
if (ArgIdx == 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_invalid_implicit_this_argument)
|
|
<< "format_arg" << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
ArgIdx--;
|
|
}
|
|
|
|
// make sure the format string is really a string
|
|
QualType Ty = getFunctionOrMethodArgType(D, ArgIdx);
|
|
|
|
bool not_nsstring_type = !isNSStringType(Ty, S.Context);
|
|
if (not_nsstring_type &&
|
|
!isCFStringType(Ty, S.Context) &&
|
|
(!Ty->isPointerType() ||
|
|
!Ty->getAs<PointerType>()->getPointeeType()->isCharType())) {
|
|
// FIXME: Should highlight the actual expression that has the wrong type.
|
|
S.Diag(Attr.getLoc(), diag::err_format_attribute_not)
|
|
<< (not_nsstring_type ? "a string type" : "an NSString")
|
|
<< IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
Ty = getFunctionOrMethodResultType(D);
|
|
if (!isNSStringType(Ty, S.Context) &&
|
|
!isCFStringType(Ty, S.Context) &&
|
|
(!Ty->isPointerType() ||
|
|
!Ty->getAs<PointerType>()->getPointeeType()->isCharType())) {
|
|
// FIXME: Should highlight the actual expression that has the wrong type.
|
|
S.Diag(Attr.getLoc(), diag::err_format_attribute_result_not)
|
|
<< (not_nsstring_type ? "string type" : "NSString")
|
|
<< IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) FormatArgAttr(Attr.getRange(), S.Context,
|
|
Idx.getZExtValue()));
|
|
}
|
|
|
|
enum FormatAttrKind {
|
|
CFStringFormat,
|
|
NSStringFormat,
|
|
StrftimeFormat,
|
|
SupportedFormat,
|
|
IgnoredFormat,
|
|
InvalidFormat
|
|
};
|
|
|
|
/// getFormatAttrKind - Map from format attribute names to supported format
|
|
/// types.
|
|
static FormatAttrKind getFormatAttrKind(StringRef Format) {
|
|
return llvm::StringSwitch<FormatAttrKind>(Format)
|
|
// Check for formats that get handled specially.
|
|
.Case("NSString", NSStringFormat)
|
|
.Case("CFString", CFStringFormat)
|
|
.Case("strftime", StrftimeFormat)
|
|
|
|
// Otherwise, check for supported formats.
|
|
.Cases("scanf", "printf", "printf0", "strfmon", SupportedFormat)
|
|
.Cases("cmn_err", "vcmn_err", "zcmn_err", SupportedFormat)
|
|
.Case("kprintf", SupportedFormat) // OpenBSD.
|
|
|
|
.Cases("gcc_diag", "gcc_cdiag", "gcc_cxxdiag", "gcc_tdiag", IgnoredFormat)
|
|
.Default(InvalidFormat);
|
|
}
|
|
|
|
/// Handle __attribute__((init_priority(priority))) attributes based on
|
|
/// http://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Attributes.html
|
|
static void handleInitPriorityAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!S.getLangOpts().CPlusPlus) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
|
|
return;
|
|
}
|
|
|
|
if (!isa<VarDecl>(D) || S.getCurFunctionOrMethodDecl()) {
|
|
S.Diag(Attr.getLoc(), diag::err_init_priority_object_attr);
|
|
Attr.setInvalid();
|
|
return;
|
|
}
|
|
QualType T = dyn_cast<VarDecl>(D)->getType();
|
|
if (S.Context.getAsArrayType(T))
|
|
T = S.Context.getBaseElementType(T);
|
|
if (!T->getAs<RecordType>()) {
|
|
S.Diag(Attr.getLoc(), diag::err_init_priority_object_attr);
|
|
Attr.setInvalid();
|
|
return;
|
|
}
|
|
|
|
if (Attr.getNumArgs() != 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
Attr.setInvalid();
|
|
return;
|
|
}
|
|
Expr *priorityExpr = Attr.getArg(0);
|
|
|
|
llvm::APSInt priority(32);
|
|
if (priorityExpr->isTypeDependent() || priorityExpr->isValueDependent() ||
|
|
!priorityExpr->isIntegerConstantExpr(priority, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< "init_priority" << priorityExpr->getSourceRange();
|
|
Attr.setInvalid();
|
|
return;
|
|
}
|
|
unsigned prioritynum = priority.getZExtValue();
|
|
if (prioritynum < 101 || prioritynum > 65535) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_outof_range)
|
|
<< priorityExpr->getSourceRange();
|
|
Attr.setInvalid();
|
|
return;
|
|
}
|
|
D->addAttr(::new (S.Context) InitPriorityAttr(Attr.getRange(), S.Context,
|
|
prioritynum));
|
|
}
|
|
|
|
FormatAttr *Sema::mergeFormatAttr(Decl *D, SourceRange Range, StringRef Format,
|
|
int FormatIdx, int FirstArg) {
|
|
// Check whether we already have an equivalent format attribute.
|
|
for (specific_attr_iterator<FormatAttr>
|
|
i = D->specific_attr_begin<FormatAttr>(),
|
|
e = D->specific_attr_end<FormatAttr>();
|
|
i != e ; ++i) {
|
|
FormatAttr *f = *i;
|
|
if (f->getType() == Format &&
|
|
f->getFormatIdx() == FormatIdx &&
|
|
f->getFirstArg() == FirstArg) {
|
|
// If we don't have a valid location for this attribute, adopt the
|
|
// location.
|
|
if (f->getLocation().isInvalid())
|
|
f->setRange(Range);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return ::new (Context) FormatAttr(Range, Context, Format, FormatIdx,
|
|
FirstArg);
|
|
}
|
|
|
|
/// Handle __attribute__((format(type,idx,firstarg))) attributes based on
|
|
/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
|
|
static void handleFormatAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
|
|
if (!Attr.getParameterName()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "format" << 1;
|
|
return;
|
|
}
|
|
|
|
if (Attr.getNumArgs() != 2) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 3;
|
|
return;
|
|
}
|
|
|
|
if (!isFunctionOrMethodOrBlock(D) || !hasFunctionProto(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
// In C++ the implicit 'this' function parameter also counts, and they are
|
|
// counted from one.
|
|
bool HasImplicitThisParam = isInstanceMethod(D);
|
|
unsigned NumArgs = getFunctionOrMethodNumArgs(D) + HasImplicitThisParam;
|
|
unsigned FirstIdx = 1;
|
|
|
|
StringRef Format = Attr.getParameterName()->getName();
|
|
|
|
// Normalize the argument, __foo__ becomes foo.
|
|
if (Format.startswith("__") && Format.endswith("__"))
|
|
Format = Format.substr(2, Format.size() - 4);
|
|
|
|
// Check for supported formats.
|
|
FormatAttrKind Kind = getFormatAttrKind(Format);
|
|
|
|
if (Kind == IgnoredFormat)
|
|
return;
|
|
|
|
if (Kind == InvalidFormat) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_type_not_supported)
|
|
<< "format" << Attr.getParameterName()->getName();
|
|
return;
|
|
}
|
|
|
|
// checks for the 2nd argument
|
|
Expr *IdxExpr = Attr.getArg(0);
|
|
llvm::APSInt Idx(32);
|
|
if (IdxExpr->isTypeDependent() || IdxExpr->isValueDependent() ||
|
|
!IdxExpr->isIntegerConstantExpr(Idx, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "format" << 2 << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
if (Idx.getZExtValue() < FirstIdx || Idx.getZExtValue() > NumArgs) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
|
|
<< "format" << 2 << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
// FIXME: Do we need to bounds check?
|
|
unsigned ArgIdx = Idx.getZExtValue() - 1;
|
|
|
|
if (HasImplicitThisParam) {
|
|
if (ArgIdx == 0) {
|
|
S.Diag(Attr.getLoc(),
|
|
diag::err_format_attribute_implicit_this_format_string)
|
|
<< IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
ArgIdx--;
|
|
}
|
|
|
|
// make sure the format string is really a string
|
|
QualType Ty = getFunctionOrMethodArgType(D, ArgIdx);
|
|
|
|
if (Kind == CFStringFormat) {
|
|
if (!isCFStringType(Ty, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_format_attribute_not)
|
|
<< "a CFString" << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
} else if (Kind == NSStringFormat) {
|
|
// FIXME: do we need to check if the type is NSString*? What are the
|
|
// semantics?
|
|
if (!isNSStringType(Ty, S.Context)) {
|
|
// FIXME: Should highlight the actual expression that has the wrong type.
|
|
S.Diag(Attr.getLoc(), diag::err_format_attribute_not)
|
|
<< "an NSString" << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
} else if (!Ty->isPointerType() ||
|
|
!Ty->getAs<PointerType>()->getPointeeType()->isCharType()) {
|
|
// FIXME: Should highlight the actual expression that has the wrong type.
|
|
S.Diag(Attr.getLoc(), diag::err_format_attribute_not)
|
|
<< "a string type" << IdxExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
// check the 3rd argument
|
|
Expr *FirstArgExpr = Attr.getArg(1);
|
|
llvm::APSInt FirstArg(32);
|
|
if (FirstArgExpr->isTypeDependent() || FirstArgExpr->isValueDependent() ||
|
|
!FirstArgExpr->isIntegerConstantExpr(FirstArg, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "format" << 3 << FirstArgExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
// check if the function is variadic if the 3rd argument non-zero
|
|
if (FirstArg != 0) {
|
|
if (isFunctionOrMethodVariadic(D)) {
|
|
++NumArgs; // +1 for ...
|
|
} else {
|
|
S.Diag(D->getLocation(), diag::err_format_attribute_requires_variadic);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// strftime requires FirstArg to be 0 because it doesn't read from any
|
|
// variable the input is just the current time + the format string.
|
|
if (Kind == StrftimeFormat) {
|
|
if (FirstArg != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_format_strftime_third_parameter)
|
|
<< FirstArgExpr->getSourceRange();
|
|
return;
|
|
}
|
|
// if 0 it disables parameter checking (to use with e.g. va_list)
|
|
} else if (FirstArg != 0 && FirstArg != NumArgs) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
|
|
<< "format" << 3 << FirstArgExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
FormatAttr *NewAttr = S.mergeFormatAttr(D, Attr.getRange(), Format,
|
|
Idx.getZExtValue(),
|
|
FirstArg.getZExtValue());
|
|
if (NewAttr)
|
|
D->addAttr(NewAttr);
|
|
}
|
|
|
|
static void handleTransparentUnionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
// Try to find the underlying union declaration.
|
|
RecordDecl *RD = 0;
|
|
TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D);
|
|
if (TD && TD->getUnderlyingType()->isUnionType())
|
|
RD = TD->getUnderlyingType()->getAsUnionType()->getDecl();
|
|
else
|
|
RD = dyn_cast<RecordDecl>(D);
|
|
|
|
if (!RD || !RD->isUnion()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedUnion;
|
|
return;
|
|
}
|
|
|
|
if (!RD->isCompleteDefinition()) {
|
|
S.Diag(Attr.getLoc(),
|
|
diag::warn_transparent_union_attribute_not_definition);
|
|
return;
|
|
}
|
|
|
|
RecordDecl::field_iterator Field = RD->field_begin(),
|
|
FieldEnd = RD->field_end();
|
|
if (Field == FieldEnd) {
|
|
S.Diag(Attr.getLoc(), diag::warn_transparent_union_attribute_zero_fields);
|
|
return;
|
|
}
|
|
|
|
FieldDecl *FirstField = *Field;
|
|
QualType FirstType = FirstField->getType();
|
|
if (FirstType->hasFloatingRepresentation() || FirstType->isVectorType()) {
|
|
S.Diag(FirstField->getLocation(),
|
|
diag::warn_transparent_union_attribute_floating)
|
|
<< FirstType->isVectorType() << FirstType;
|
|
return;
|
|
}
|
|
|
|
uint64_t FirstSize = S.Context.getTypeSize(FirstType);
|
|
uint64_t FirstAlign = S.Context.getTypeAlign(FirstType);
|
|
for (; Field != FieldEnd; ++Field) {
|
|
QualType FieldType = Field->getType();
|
|
if (S.Context.getTypeSize(FieldType) != FirstSize ||
|
|
S.Context.getTypeAlign(FieldType) != FirstAlign) {
|
|
// Warn if we drop the attribute.
|
|
bool isSize = S.Context.getTypeSize(FieldType) != FirstSize;
|
|
unsigned FieldBits = isSize? S.Context.getTypeSize(FieldType)
|
|
: S.Context.getTypeAlign(FieldType);
|
|
S.Diag(Field->getLocation(),
|
|
diag::warn_transparent_union_attribute_field_size_align)
|
|
<< isSize << Field->getDeclName() << FieldBits;
|
|
unsigned FirstBits = isSize? FirstSize : FirstAlign;
|
|
S.Diag(FirstField->getLocation(),
|
|
diag::note_transparent_union_first_field_size_align)
|
|
<< isSize << FirstBits;
|
|
return;
|
|
}
|
|
}
|
|
|
|
RD->addAttr(::new (S.Context) TransparentUnionAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleAnnotateAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
Expr *ArgExpr = Attr.getArg(0);
|
|
StringLiteral *SE = dyn_cast<StringLiteral>(ArgExpr);
|
|
|
|
// Make sure that there is a string literal as the annotation's single
|
|
// argument.
|
|
if (!SE) {
|
|
S.Diag(ArgExpr->getLocStart(), diag::err_attribute_not_string) <<"annotate";
|
|
return;
|
|
}
|
|
|
|
// Don't duplicate annotations that are already set.
|
|
for (specific_attr_iterator<AnnotateAttr>
|
|
i = D->specific_attr_begin<AnnotateAttr>(),
|
|
e = D->specific_attr_end<AnnotateAttr>(); i != e; ++i) {
|
|
if ((*i)->getAnnotation() == SE->getString())
|
|
return;
|
|
}
|
|
D->addAttr(::new (S.Context) AnnotateAttr(Attr.getRange(), S.Context,
|
|
SE->getString()));
|
|
}
|
|
|
|
static void handleAlignedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
//FIXME: The C++0x version of this attribute has more limited applicabilty
|
|
// than GNU's, and should error out when it is used to specify a
|
|
// weaker alignment, rather than being silently ignored.
|
|
|
|
if (Attr.getNumArgs() == 0) {
|
|
D->addAttr(::new (S.Context) AlignedAttr(Attr.getRange(), S.Context,
|
|
true, 0, Attr.isDeclspecAttribute()));
|
|
return;
|
|
}
|
|
|
|
S.AddAlignedAttr(Attr.getRange(), D, Attr.getArg(0),
|
|
Attr.isDeclspecAttribute());
|
|
}
|
|
|
|
void Sema::AddAlignedAttr(SourceRange AttrRange, Decl *D, Expr *E,
|
|
bool isDeclSpec) {
|
|
// FIXME: Handle pack-expansions here.
|
|
if (DiagnoseUnexpandedParameterPack(E))
|
|
return;
|
|
|
|
if (E->isTypeDependent() || E->isValueDependent()) {
|
|
// Save dependent expressions in the AST to be instantiated.
|
|
D->addAttr(::new (Context) AlignedAttr(AttrRange, Context, true, E,
|
|
isDeclSpec));
|
|
return;
|
|
}
|
|
|
|
SourceLocation AttrLoc = AttrRange.getBegin();
|
|
// FIXME: Cache the number on the Attr object?
|
|
llvm::APSInt Alignment(32);
|
|
ExprResult ICE
|
|
= VerifyIntegerConstantExpression(E, &Alignment,
|
|
diag::err_aligned_attribute_argument_not_int,
|
|
/*AllowFold*/ false);
|
|
if (ICE.isInvalid())
|
|
return;
|
|
if (!llvm::isPowerOf2_64(Alignment.getZExtValue())) {
|
|
Diag(AttrLoc, diag::err_attribute_aligned_not_power_of_two)
|
|
<< E->getSourceRange();
|
|
return;
|
|
}
|
|
if (isDeclSpec) {
|
|
// We've already verified it's a power of 2, now let's make sure it's
|
|
// 8192 or less.
|
|
if (Alignment.getZExtValue() > 8192) {
|
|
Diag(AttrLoc, diag::err_attribute_aligned_greater_than_8192)
|
|
<< E->getSourceRange();
|
|
return;
|
|
}
|
|
}
|
|
|
|
D->addAttr(::new (Context) AlignedAttr(AttrRange, Context, true, ICE.take(),
|
|
isDeclSpec));
|
|
}
|
|
|
|
void Sema::AddAlignedAttr(SourceRange AttrRange, Decl *D, TypeSourceInfo *TS,
|
|
bool isDeclSpec) {
|
|
// FIXME: Cache the number on the Attr object if non-dependent?
|
|
// FIXME: Perform checking of type validity
|
|
D->addAttr(::new (Context) AlignedAttr(AttrRange, Context, false, TS,
|
|
isDeclSpec));
|
|
return;
|
|
}
|
|
|
|
/// handleModeAttr - This attribute modifies the width of a decl with primitive
|
|
/// type.
|
|
///
|
|
/// Despite what would be logical, the mode attribute is a decl attribute, not a
|
|
/// type attribute: 'int ** __attribute((mode(HI))) *G;' tries to make 'G' be
|
|
/// HImode, not an intermediate pointer.
|
|
static void handleModeAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// This attribute isn't documented, but glibc uses it. It changes
|
|
// the width of an int or unsigned int to the specified size.
|
|
|
|
// Check that there aren't any arguments
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
IdentifierInfo *Name = Attr.getParameterName();
|
|
if (!Name) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name);
|
|
return;
|
|
}
|
|
|
|
StringRef Str = Attr.getParameterName()->getName();
|
|
|
|
// Normalize the attribute name, __foo__ becomes foo.
|
|
if (Str.startswith("__") && Str.endswith("__"))
|
|
Str = Str.substr(2, Str.size() - 4);
|
|
|
|
unsigned DestWidth = 0;
|
|
bool IntegerMode = true;
|
|
bool ComplexMode = false;
|
|
switch (Str.size()) {
|
|
case 2:
|
|
switch (Str[0]) {
|
|
case 'Q': DestWidth = 8; break;
|
|
case 'H': DestWidth = 16; break;
|
|
case 'S': DestWidth = 32; break;
|
|
case 'D': DestWidth = 64; break;
|
|
case 'X': DestWidth = 96; break;
|
|
case 'T': DestWidth = 128; break;
|
|
}
|
|
if (Str[1] == 'F') {
|
|
IntegerMode = false;
|
|
} else if (Str[1] == 'C') {
|
|
IntegerMode = false;
|
|
ComplexMode = true;
|
|
} else if (Str[1] != 'I') {
|
|
DestWidth = 0;
|
|
}
|
|
break;
|
|
case 4:
|
|
// FIXME: glibc uses 'word' to define register_t; this is narrower than a
|
|
// pointer on PIC16 and other embedded platforms.
|
|
if (Str == "word")
|
|
DestWidth = S.Context.getTargetInfo().getPointerWidth(0);
|
|
else if (Str == "byte")
|
|
DestWidth = S.Context.getTargetInfo().getCharWidth();
|
|
break;
|
|
case 7:
|
|
if (Str == "pointer")
|
|
DestWidth = S.Context.getTargetInfo().getPointerWidth(0);
|
|
break;
|
|
}
|
|
|
|
QualType OldTy;
|
|
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D))
|
|
OldTy = TD->getUnderlyingType();
|
|
else if (ValueDecl *VD = dyn_cast<ValueDecl>(D))
|
|
OldTy = VD->getType();
|
|
else {
|
|
S.Diag(D->getLocation(), diag::err_attr_wrong_decl)
|
|
<< "mode" << Attr.getRange();
|
|
return;
|
|
}
|
|
|
|
if (!OldTy->getAs<BuiltinType>() && !OldTy->isComplexType())
|
|
S.Diag(Attr.getLoc(), diag::err_mode_not_primitive);
|
|
else if (IntegerMode) {
|
|
if (!OldTy->isIntegralOrEnumerationType())
|
|
S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
|
|
} else if (ComplexMode) {
|
|
if (!OldTy->isComplexType())
|
|
S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
|
|
} else {
|
|
if (!OldTy->isFloatingType())
|
|
S.Diag(Attr.getLoc(), diag::err_mode_wrong_type);
|
|
}
|
|
|
|
// FIXME: Sync this with InitializePredefinedMacros; we need to match int8_t
|
|
// and friends, at least with glibc.
|
|
// FIXME: Make sure 32/64-bit integers don't get defined to types of the wrong
|
|
// width on unusual platforms.
|
|
// FIXME: Make sure floating-point mappings are accurate
|
|
// FIXME: Support XF and TF types
|
|
QualType NewTy;
|
|
switch (DestWidth) {
|
|
case 0:
|
|
S.Diag(Attr.getLoc(), diag::err_unknown_machine_mode) << Name;
|
|
return;
|
|
default:
|
|
S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name;
|
|
return;
|
|
case 8:
|
|
if (!IntegerMode) {
|
|
S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name;
|
|
return;
|
|
}
|
|
if (OldTy->isSignedIntegerType())
|
|
NewTy = S.Context.SignedCharTy;
|
|
else
|
|
NewTy = S.Context.UnsignedCharTy;
|
|
break;
|
|
case 16:
|
|
if (!IntegerMode) {
|
|
S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name;
|
|
return;
|
|
}
|
|
if (OldTy->isSignedIntegerType())
|
|
NewTy = S.Context.ShortTy;
|
|
else
|
|
NewTy = S.Context.UnsignedShortTy;
|
|
break;
|
|
case 32:
|
|
if (!IntegerMode)
|
|
NewTy = S.Context.FloatTy;
|
|
else if (OldTy->isSignedIntegerType())
|
|
NewTy = S.Context.IntTy;
|
|
else
|
|
NewTy = S.Context.UnsignedIntTy;
|
|
break;
|
|
case 64:
|
|
if (!IntegerMode)
|
|
NewTy = S.Context.DoubleTy;
|
|
else if (OldTy->isSignedIntegerType())
|
|
if (S.Context.getTargetInfo().getLongWidth() == 64)
|
|
NewTy = S.Context.LongTy;
|
|
else
|
|
NewTy = S.Context.LongLongTy;
|
|
else
|
|
if (S.Context.getTargetInfo().getLongWidth() == 64)
|
|
NewTy = S.Context.UnsignedLongTy;
|
|
else
|
|
NewTy = S.Context.UnsignedLongLongTy;
|
|
break;
|
|
case 96:
|
|
NewTy = S.Context.LongDoubleTy;
|
|
break;
|
|
case 128:
|
|
if (!IntegerMode) {
|
|
S.Diag(Attr.getLoc(), diag::err_unsupported_machine_mode) << Name;
|
|
return;
|
|
}
|
|
if (OldTy->isSignedIntegerType())
|
|
NewTy = S.Context.Int128Ty;
|
|
else
|
|
NewTy = S.Context.UnsignedInt128Ty;
|
|
break;
|
|
}
|
|
|
|
if (ComplexMode) {
|
|
NewTy = S.Context.getComplexType(NewTy);
|
|
}
|
|
|
|
// Install the new type.
|
|
if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
|
|
// FIXME: preserve existing source info.
|
|
TD->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(NewTy));
|
|
} else
|
|
cast<ValueDecl>(D)->setType(NewTy);
|
|
}
|
|
|
|
static void handleNoDebugAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (const VarDecl *VD = dyn_cast<VarDecl>(D)) {
|
|
if (!VD->hasGlobalStorage())
|
|
S.Diag(Attr.getLoc(),
|
|
diag::warn_attribute_requires_functions_or_static_globals)
|
|
<< Attr.getName();
|
|
} else if (!isFunctionOrMethod(D)) {
|
|
S.Diag(Attr.getLoc(),
|
|
diag::warn_attribute_requires_functions_or_static_globals)
|
|
<< Attr.getName();
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NoDebugAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNoInlineAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NoInlineAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNoInstrumentFunctionAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NoInstrumentFunctionAttr(Attr.getRange(),
|
|
S.Context));
|
|
}
|
|
|
|
static void handleConstantAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.CUDA) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isa<VarDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CUDAConstantAttr(Attr.getRange(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "constant";
|
|
}
|
|
}
|
|
|
|
static void handleDeviceAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.CUDA) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isa<FunctionDecl>(D) && !isa<VarDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableOrFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CUDADeviceAttr(Attr.getRange(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "device";
|
|
}
|
|
}
|
|
|
|
static void handleGlobalAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.CUDA) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
FunctionDecl *FD = cast<FunctionDecl>(D);
|
|
if (!FD->getResultType()->isVoidType()) {
|
|
TypeLoc TL = FD->getTypeSourceInfo()->getTypeLoc().IgnoreParens();
|
|
if (FunctionTypeLoc* FTL = dyn_cast<FunctionTypeLoc>(&TL)) {
|
|
S.Diag(FD->getTypeSpecStartLoc(), diag::err_kern_type_not_void_return)
|
|
<< FD->getType()
|
|
<< FixItHint::CreateReplacement(FTL->getResultLoc().getSourceRange(),
|
|
"void");
|
|
} else {
|
|
S.Diag(FD->getTypeSpecStartLoc(), diag::err_kern_type_not_void_return)
|
|
<< FD->getType();
|
|
}
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CUDAGlobalAttr(Attr.getRange(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "global";
|
|
}
|
|
}
|
|
|
|
static void handleHostAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.CUDA) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CUDAHostAttr(Attr.getRange(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "host";
|
|
}
|
|
}
|
|
|
|
static void handleSharedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.CUDA) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
|
|
if (!isa<VarDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CUDASharedAttr(Attr.getRange(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "shared";
|
|
}
|
|
}
|
|
|
|
static void handleGNUInlineAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 0))
|
|
return;
|
|
|
|
FunctionDecl *Fn = dyn_cast<FunctionDecl>(D);
|
|
if (Fn == 0) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
if (!Fn->isInlineSpecified()) {
|
|
S.Diag(Attr.getLoc(), diag::warn_gnu_inline_attribute_requires_inline);
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) GNUInlineAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleCallConvAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (hasDeclarator(D)) return;
|
|
|
|
// Diagnostic is emitted elsewhere: here we store the (valid) Attr
|
|
// in the Decl node for syntactic reasoning, e.g., pretty-printing.
|
|
CallingConv CC;
|
|
if (S.CheckCallingConvAttr(Attr, CC))
|
|
return;
|
|
|
|
if (!isa<ObjCMethodDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
switch (Attr.getKind()) {
|
|
case AttributeList::AT_FastCall:
|
|
D->addAttr(::new (S.Context) FastCallAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
case AttributeList::AT_StdCall:
|
|
D->addAttr(::new (S.Context) StdCallAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
case AttributeList::AT_ThisCall:
|
|
D->addAttr(::new (S.Context) ThisCallAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
case AttributeList::AT_CDecl:
|
|
D->addAttr(::new (S.Context) CDeclAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
case AttributeList::AT_Pascal:
|
|
D->addAttr(::new (S.Context) PascalAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
case AttributeList::AT_Pcs: {
|
|
PcsAttr::PCSType PCS;
|
|
switch (CC) {
|
|
case CC_AAPCS:
|
|
PCS = PcsAttr::AAPCS;
|
|
break;
|
|
case CC_AAPCS_VFP:
|
|
PCS = PcsAttr::AAPCS_VFP;
|
|
break;
|
|
default:
|
|
llvm_unreachable("unexpected calling convention in pcs attribute");
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) PcsAttr(Attr.getRange(), S.Context, PCS));
|
|
return;
|
|
}
|
|
case AttributeList::AT_PnaclCall:
|
|
D->addAttr(::new (S.Context) PnaclCallAttr(Attr.getRange(), S.Context));
|
|
return;
|
|
|
|
default:
|
|
llvm_unreachable("unexpected attribute kind");
|
|
}
|
|
}
|
|
|
|
static void handleOpenCLKernelAttr(Sema &S, Decl *D, const AttributeList &Attr){
|
|
assert(!Attr.isInvalid());
|
|
D->addAttr(::new (S.Context) OpenCLKernelAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
bool Sema::CheckCallingConvAttr(const AttributeList &attr, CallingConv &CC) {
|
|
if (attr.isInvalid())
|
|
return true;
|
|
|
|
unsigned ReqArgs = attr.getKind() == AttributeList::AT_Pcs ? 1 : 0;
|
|
if (attr.getNumArgs() != ReqArgs || attr.getParameterName()) {
|
|
Diag(attr.getLoc(), diag::err_attribute_wrong_number_arguments) << ReqArgs;
|
|
attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
// TODO: diagnose uses of these conventions on the wrong target. Or, better
|
|
// move to TargetAttributesSema one day.
|
|
switch (attr.getKind()) {
|
|
case AttributeList::AT_CDecl: CC = CC_C; break;
|
|
case AttributeList::AT_FastCall: CC = CC_X86FastCall; break;
|
|
case AttributeList::AT_StdCall: CC = CC_X86StdCall; break;
|
|
case AttributeList::AT_ThisCall: CC = CC_X86ThisCall; break;
|
|
case AttributeList::AT_Pascal: CC = CC_X86Pascal; break;
|
|
case AttributeList::AT_Pcs: {
|
|
Expr *Arg = attr.getArg(0);
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
if (!Str || !Str->isAscii()) {
|
|
Diag(attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "pcs" << 1;
|
|
attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
StringRef StrRef = Str->getString();
|
|
if (StrRef == "aapcs") {
|
|
CC = CC_AAPCS;
|
|
break;
|
|
} else if (StrRef == "aapcs-vfp") {
|
|
CC = CC_AAPCS_VFP;
|
|
break;
|
|
}
|
|
|
|
attr.setInvalid();
|
|
Diag(attr.getLoc(), diag::err_invalid_pcs);
|
|
return true;
|
|
}
|
|
case AttributeList::AT_PnaclCall: CC = CC_PnaclCall; break;
|
|
default: llvm_unreachable("unexpected attribute kind");
|
|
}
|
|
|
|
const TargetInfo &TI = Context.getTargetInfo();
|
|
TargetInfo::CallingConvCheckResult A = TI.checkCallingConvention(CC);
|
|
if (A == TargetInfo::CCCR_Warning) {
|
|
Diag(attr.getLoc(), diag::warn_cconv_ignored) << attr.getName();
|
|
CC = TI.getDefaultCallingConv();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void handleRegparmAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (hasDeclarator(D)) return;
|
|
|
|
unsigned numParams;
|
|
if (S.CheckRegparmAttr(Attr, numParams))
|
|
return;
|
|
|
|
if (!isa<ObjCMethodDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) RegparmAttr(Attr.getRange(), S.Context, numParams));
|
|
}
|
|
|
|
/// Checks a regparm attribute, returning true if it is ill-formed and
|
|
/// otherwise setting numParams to the appropriate value.
|
|
bool Sema::CheckRegparmAttr(const AttributeList &Attr, unsigned &numParams) {
|
|
if (Attr.isInvalid())
|
|
return true;
|
|
|
|
if (Attr.getNumArgs() != 1) {
|
|
Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
Attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
Expr *NumParamsExpr = Attr.getArg(0);
|
|
llvm::APSInt NumParams(32);
|
|
if (NumParamsExpr->isTypeDependent() || NumParamsExpr->isValueDependent() ||
|
|
!NumParamsExpr->isIntegerConstantExpr(NumParams, Context)) {
|
|
Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
|
|
<< "regparm" << NumParamsExpr->getSourceRange();
|
|
Attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
if (Context.getTargetInfo().getRegParmMax() == 0) {
|
|
Diag(Attr.getLoc(), diag::err_attribute_regparm_wrong_platform)
|
|
<< NumParamsExpr->getSourceRange();
|
|
Attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
numParams = NumParams.getZExtValue();
|
|
if (numParams > Context.getTargetInfo().getRegParmMax()) {
|
|
Diag(Attr.getLoc(), diag::err_attribute_regparm_invalid_number)
|
|
<< Context.getTargetInfo().getRegParmMax() << NumParamsExpr->getSourceRange();
|
|
Attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void handleLaunchBoundsAttr(Sema &S, Decl *D, const AttributeList &Attr){
|
|
if (S.LangOpts.CUDA) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 1 && Attr.getNumArgs() != 2) {
|
|
// FIXME: 0 is not okay.
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 2;
|
|
return;
|
|
}
|
|
|
|
if (!isFunctionOrMethod(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
Expr *MaxThreadsExpr = Attr.getArg(0);
|
|
llvm::APSInt MaxThreads(32);
|
|
if (MaxThreadsExpr->isTypeDependent() ||
|
|
MaxThreadsExpr->isValueDependent() ||
|
|
!MaxThreadsExpr->isIntegerConstantExpr(MaxThreads, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "launch_bounds" << 1 << MaxThreadsExpr->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
llvm::APSInt MinBlocks(32);
|
|
if (Attr.getNumArgs() > 1) {
|
|
Expr *MinBlocksExpr = Attr.getArg(1);
|
|
if (MinBlocksExpr->isTypeDependent() ||
|
|
MinBlocksExpr->isValueDependent() ||
|
|
!MinBlocksExpr->isIntegerConstantExpr(MinBlocks, S.Context)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_int)
|
|
<< "launch_bounds" << 2 << MinBlocksExpr->getSourceRange();
|
|
return;
|
|
}
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) CUDALaunchBoundsAttr(Attr.getRange(), S.Context,
|
|
MaxThreads.getZExtValue(),
|
|
MinBlocks.getZExtValue()));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "launch_bounds";
|
|
}
|
|
}
|
|
|
|
static void handleArgumentWithTypeTagAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
StringRef AttrName = Attr.getName()->getName();
|
|
if (!Attr.getParameterName()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_identifier)
|
|
<< Attr.getName() << /* arg num = */ 1;
|
|
return;
|
|
}
|
|
|
|
if (Attr.getNumArgs() != 2) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments)
|
|
<< /* required args = */ 3;
|
|
return;
|
|
}
|
|
|
|
IdentifierInfo *ArgumentKind = Attr.getParameterName();
|
|
|
|
if (!isFunctionOrMethod(D) || !hasFunctionProto(D)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
uint64_t ArgumentIdx;
|
|
if (!checkFunctionOrMethodArgumentIndex(S, D, AttrName,
|
|
Attr.getLoc(), 2,
|
|
Attr.getArg(0), ArgumentIdx))
|
|
return;
|
|
|
|
uint64_t TypeTagIdx;
|
|
if (!checkFunctionOrMethodArgumentIndex(S, D, AttrName,
|
|
Attr.getLoc(), 3,
|
|
Attr.getArg(1), TypeTagIdx))
|
|
return;
|
|
|
|
bool IsPointer = (AttrName == "pointer_with_type_tag");
|
|
if (IsPointer) {
|
|
// Ensure that buffer has a pointer type.
|
|
QualType BufferTy = getFunctionOrMethodArgType(D, ArgumentIdx);
|
|
if (!BufferTy->isPointerType()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_pointers_only)
|
|
<< AttrName;
|
|
}
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) ArgumentWithTypeTagAttr(Attr.getRange(),
|
|
S.Context,
|
|
ArgumentKind,
|
|
ArgumentIdx,
|
|
TypeTagIdx,
|
|
IsPointer));
|
|
}
|
|
|
|
static void handleTypeTagForDatatypeAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
IdentifierInfo *PointerKind = Attr.getParameterName();
|
|
if (!PointerKind) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_identifier)
|
|
<< "type_tag_for_datatype" << 1;
|
|
return;
|
|
}
|
|
|
|
QualType MatchingCType = S.GetTypeFromParser(Attr.getMatchingCType(), NULL);
|
|
|
|
D->addAttr(::new (S.Context) TypeTagForDatatypeAttr(
|
|
Attr.getRange(),
|
|
S.Context,
|
|
PointerKind,
|
|
MatchingCType,
|
|
Attr.getLayoutCompatible(),
|
|
Attr.getMustBeNull()));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Checker-specific attribute handlers.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static bool isValidSubjectOfNSAttribute(Sema &S, QualType type) {
|
|
return type->isDependentType() ||
|
|
type->isObjCObjectPointerType() ||
|
|
S.Context.isObjCNSObjectType(type);
|
|
}
|
|
static bool isValidSubjectOfCFAttribute(Sema &S, QualType type) {
|
|
return type->isDependentType() ||
|
|
type->isPointerType() ||
|
|
isValidSubjectOfNSAttribute(S, type);
|
|
}
|
|
|
|
static void handleNSConsumedAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
ParmVarDecl *param = dyn_cast<ParmVarDecl>(D);
|
|
if (!param) {
|
|
S.Diag(D->getLocStart(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getRange() << Attr.getName() << ExpectedParameter;
|
|
return;
|
|
}
|
|
|
|
bool typeOK, cf;
|
|
if (Attr.getKind() == AttributeList::AT_NSConsumed) {
|
|
typeOK = isValidSubjectOfNSAttribute(S, param->getType());
|
|
cf = false;
|
|
} else {
|
|
typeOK = isValidSubjectOfCFAttribute(S, param->getType());
|
|
cf = true;
|
|
}
|
|
|
|
if (!typeOK) {
|
|
S.Diag(D->getLocStart(), diag::warn_ns_attribute_wrong_parameter_type)
|
|
<< Attr.getRange() << Attr.getName() << cf;
|
|
return;
|
|
}
|
|
|
|
if (cf)
|
|
param->addAttr(::new (S.Context) CFConsumedAttr(Attr.getRange(), S.Context));
|
|
else
|
|
param->addAttr(::new (S.Context) NSConsumedAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNSConsumesSelfAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!isa<ObjCMethodDecl>(D)) {
|
|
S.Diag(D->getLocStart(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getRange() << Attr.getName() << ExpectedMethod;
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NSConsumesSelfAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleNSReturnsRetainedAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
|
|
QualType returnType;
|
|
|
|
if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
|
|
returnType = MD->getResultType();
|
|
else if (S.getLangOpts().ObjCAutoRefCount && hasDeclarator(D) &&
|
|
(Attr.getKind() == AttributeList::AT_NSReturnsRetained))
|
|
return; // ignore: was handled as a type attribute
|
|
else if (ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(D))
|
|
returnType = PD->getType();
|
|
else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
|
|
returnType = FD->getResultType();
|
|
else {
|
|
S.Diag(D->getLocStart(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getRange() << Attr.getName()
|
|
<< ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
bool typeOK;
|
|
bool cf;
|
|
switch (Attr.getKind()) {
|
|
default: llvm_unreachable("invalid ownership attribute");
|
|
case AttributeList::AT_NSReturnsAutoreleased:
|
|
case AttributeList::AT_NSReturnsRetained:
|
|
case AttributeList::AT_NSReturnsNotRetained:
|
|
typeOK = isValidSubjectOfNSAttribute(S, returnType);
|
|
cf = false;
|
|
break;
|
|
|
|
case AttributeList::AT_CFReturnsRetained:
|
|
case AttributeList::AT_CFReturnsNotRetained:
|
|
typeOK = isValidSubjectOfCFAttribute(S, returnType);
|
|
cf = true;
|
|
break;
|
|
}
|
|
|
|
if (!typeOK) {
|
|
S.Diag(D->getLocStart(), diag::warn_ns_attribute_wrong_return_type)
|
|
<< Attr.getRange() << Attr.getName() << isa<ObjCMethodDecl>(D) << cf;
|
|
return;
|
|
}
|
|
|
|
switch (Attr.getKind()) {
|
|
default:
|
|
llvm_unreachable("invalid ownership attribute");
|
|
case AttributeList::AT_NSReturnsAutoreleased:
|
|
D->addAttr(::new (S.Context) NSReturnsAutoreleasedAttr(Attr.getRange(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_CFReturnsNotRetained:
|
|
D->addAttr(::new (S.Context) CFReturnsNotRetainedAttr(Attr.getRange(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_NSReturnsNotRetained:
|
|
D->addAttr(::new (S.Context) NSReturnsNotRetainedAttr(Attr.getRange(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_CFReturnsRetained:
|
|
D->addAttr(::new (S.Context) CFReturnsRetainedAttr(Attr.getRange(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_NSReturnsRetained:
|
|
D->addAttr(::new (S.Context) NSReturnsRetainedAttr(Attr.getRange(),
|
|
S.Context));
|
|
return;
|
|
};
|
|
}
|
|
|
|
static void handleObjCReturnsInnerPointerAttr(Sema &S, Decl *D,
|
|
const AttributeList &attr) {
|
|
SourceLocation loc = attr.getLoc();
|
|
|
|
ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(D);
|
|
|
|
if (!method) {
|
|
S.Diag(D->getLocStart(), diag::err_attribute_wrong_decl_type)
|
|
<< SourceRange(loc, loc) << attr.getName() << ExpectedMethod;
|
|
return;
|
|
}
|
|
|
|
// Check that the method returns a normal pointer.
|
|
QualType resultType = method->getResultType();
|
|
|
|
if (!resultType->isReferenceType() &&
|
|
(!resultType->isPointerType() || resultType->isObjCRetainableType())) {
|
|
S.Diag(method->getLocStart(), diag::warn_ns_attribute_wrong_return_type)
|
|
<< SourceRange(loc)
|
|
<< attr.getName() << /*method*/ 1 << /*non-retainable pointer*/ 2;
|
|
|
|
// Drop the attribute.
|
|
return;
|
|
}
|
|
|
|
method->addAttr(
|
|
::new (S.Context) ObjCReturnsInnerPointerAttr(attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handleObjCRequiresSuperAttr(Sema &S, Decl *D,
|
|
const AttributeList &attr) {
|
|
SourceLocation loc = attr.getLoc();
|
|
ObjCMethodDecl *method = dyn_cast<ObjCMethodDecl>(D);
|
|
|
|
if (!method) {
|
|
S.Diag(D->getLocStart(), diag::err_attribute_wrong_decl_type)
|
|
<< SourceRange(loc, loc) << attr.getName() << ExpectedMethod;
|
|
return;
|
|
}
|
|
DeclContext *DC = method->getDeclContext();
|
|
if (const ObjCProtocolDecl *PDecl = dyn_cast_or_null<ObjCProtocolDecl>(DC)) {
|
|
S.Diag(D->getLocStart(), diag::warn_objc_requires_super_protocol)
|
|
<< attr.getName() << 0;
|
|
S.Diag(PDecl->getLocation(), diag::note_protocol_decl);
|
|
return;
|
|
}
|
|
if (method->getMethodFamily() == OMF_dealloc) {
|
|
S.Diag(D->getLocStart(), diag::warn_objc_requires_super_protocol)
|
|
<< attr.getName() << 1;
|
|
return;
|
|
}
|
|
|
|
method->addAttr(
|
|
::new (S.Context) ObjCRequiresSuperAttr(attr.getRange(), S.Context));
|
|
}
|
|
|
|
/// Handle cf_audited_transfer and cf_unknown_transfer.
|
|
static void handleCFTransferAttr(Sema &S, Decl *D, const AttributeList &A) {
|
|
if (!isa<FunctionDecl>(D)) {
|
|
S.Diag(D->getLocStart(), diag::err_attribute_wrong_decl_type)
|
|
<< A.getRange() << A.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
bool IsAudited = (A.getKind() == AttributeList::AT_CFAuditedTransfer);
|
|
|
|
// Check whether there's a conflicting attribute already present.
|
|
Attr *Existing;
|
|
if (IsAudited) {
|
|
Existing = D->getAttr<CFUnknownTransferAttr>();
|
|
} else {
|
|
Existing = D->getAttr<CFAuditedTransferAttr>();
|
|
}
|
|
if (Existing) {
|
|
S.Diag(D->getLocStart(), diag::err_attributes_are_not_compatible)
|
|
<< A.getName()
|
|
<< (IsAudited ? "cf_unknown_transfer" : "cf_audited_transfer")
|
|
<< A.getRange() << Existing->getRange();
|
|
return;
|
|
}
|
|
|
|
// All clear; add the attribute.
|
|
if (IsAudited) {
|
|
D->addAttr(
|
|
::new (S.Context) CFAuditedTransferAttr(A.getRange(), S.Context));
|
|
} else {
|
|
D->addAttr(
|
|
::new (S.Context) CFUnknownTransferAttr(A.getRange(), S.Context));
|
|
}
|
|
}
|
|
|
|
static void handleNSBridgedAttr(Sema &S, Scope *Sc, Decl *D,
|
|
const AttributeList &Attr) {
|
|
RecordDecl *RD = dyn_cast<RecordDecl>(D);
|
|
if (!RD || RD->isUnion()) {
|
|
S.Diag(D->getLocStart(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getRange() << Attr.getName() << ExpectedStruct;
|
|
}
|
|
|
|
IdentifierInfo *ParmName = Attr.getParameterName();
|
|
|
|
// In Objective-C, verify that the type names an Objective-C type.
|
|
// We don't want to check this outside of ObjC because people sometimes
|
|
// do crazy C declarations of Objective-C types.
|
|
if (ParmName && S.getLangOpts().ObjC1) {
|
|
// Check for an existing type with this name.
|
|
LookupResult R(S, DeclarationName(ParmName), Attr.getParameterLoc(),
|
|
Sema::LookupOrdinaryName);
|
|
if (S.LookupName(R, Sc)) {
|
|
NamedDecl *Target = R.getFoundDecl();
|
|
if (Target && !isa<ObjCInterfaceDecl>(Target)) {
|
|
S.Diag(D->getLocStart(), diag::err_ns_bridged_not_interface);
|
|
S.Diag(Target->getLocStart(), diag::note_declared_at);
|
|
}
|
|
}
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) NSBridgedAttr(Attr.getRange(), S.Context,
|
|
ParmName));
|
|
}
|
|
|
|
static void handleObjCOwnershipAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (hasDeclarator(D)) return;
|
|
|
|
S.Diag(D->getLocStart(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getRange() << Attr.getName() << ExpectedVariable;
|
|
}
|
|
|
|
static void handleObjCPreciseLifetimeAttr(Sema &S, Decl *D,
|
|
const AttributeList &Attr) {
|
|
if (!isa<VarDecl>(D) && !isa<FieldDecl>(D)) {
|
|
S.Diag(D->getLocStart(), diag::err_attribute_wrong_decl_type)
|
|
<< Attr.getRange() << Attr.getName() << ExpectedVariable;
|
|
return;
|
|
}
|
|
|
|
ValueDecl *vd = cast<ValueDecl>(D);
|
|
QualType type = vd->getType();
|
|
|
|
if (!type->isDependentType() &&
|
|
!type->isObjCLifetimeType()) {
|
|
S.Diag(Attr.getLoc(), diag::err_objc_precise_lifetime_bad_type)
|
|
<< type;
|
|
return;
|
|
}
|
|
|
|
Qualifiers::ObjCLifetime lifetime = type.getObjCLifetime();
|
|
|
|
// If we have no lifetime yet, check the lifetime we're presumably
|
|
// going to infer.
|
|
if (lifetime == Qualifiers::OCL_None && !type->isDependentType())
|
|
lifetime = type->getObjCARCImplicitLifetime();
|
|
|
|
switch (lifetime) {
|
|
case Qualifiers::OCL_None:
|
|
assert(type->isDependentType() &&
|
|
"didn't infer lifetime for non-dependent type?");
|
|
break;
|
|
|
|
case Qualifiers::OCL_Weak: // meaningful
|
|
case Qualifiers::OCL_Strong: // meaningful
|
|
break;
|
|
|
|
case Qualifiers::OCL_ExplicitNone:
|
|
case Qualifiers::OCL_Autoreleasing:
|
|
S.Diag(Attr.getLoc(), diag::warn_objc_precise_lifetime_meaningless)
|
|
<< (lifetime == Qualifiers::OCL_Autoreleasing);
|
|
break;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context)
|
|
ObjCPreciseLifetimeAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Microsoft specific attribute handlers.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static void handleUuidAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.MicrosoftExt || S.LangOpts.Borland) {
|
|
// check the attribute arguments.
|
|
if (!checkAttributeNumArgs(S, Attr, 1))
|
|
return;
|
|
|
|
Expr *Arg = Attr.getArg(0);
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
if (!Str || !Str->isAscii()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "uuid" << 1;
|
|
return;
|
|
}
|
|
|
|
StringRef StrRef = Str->getString();
|
|
|
|
bool IsCurly = StrRef.size() > 1 && StrRef.front() == '{' &&
|
|
StrRef.back() == '}';
|
|
|
|
// Validate GUID length.
|
|
if (IsCurly && StrRef.size() != 38) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_uuid_malformed_guid);
|
|
return;
|
|
}
|
|
if (!IsCurly && StrRef.size() != 36) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_uuid_malformed_guid);
|
|
return;
|
|
}
|
|
|
|
// GUID format is "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX" or
|
|
// "{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}"
|
|
StringRef::iterator I = StrRef.begin();
|
|
if (IsCurly) // Skip the optional '{'
|
|
++I;
|
|
|
|
for (int i = 0; i < 36; ++i) {
|
|
if (i == 8 || i == 13 || i == 18 || i == 23) {
|
|
if (*I != '-') {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_uuid_malformed_guid);
|
|
return;
|
|
}
|
|
} else if (!isxdigit(*I)) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_uuid_malformed_guid);
|
|
return;
|
|
}
|
|
I++;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) UuidAttr(Attr.getRange(), S.Context,
|
|
Str->getString()));
|
|
} else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "uuid";
|
|
}
|
|
|
|
static void handleInheritanceAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (!S.LangOpts.MicrosoftExt) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
|
|
return;
|
|
}
|
|
|
|
AttributeList::Kind Kind = Attr.getKind();
|
|
if (Kind == AttributeList::AT_SingleInheritance)
|
|
D->addAttr(
|
|
::new (S.Context) SingleInheritanceAttr(Attr.getRange(), S.Context));
|
|
else if (Kind == AttributeList::AT_MultipleInheritance)
|
|
D->addAttr(
|
|
::new (S.Context) MultipleInheritanceAttr(Attr.getRange(), S.Context));
|
|
else if (Kind == AttributeList::AT_VirtualInheritance)
|
|
D->addAttr(
|
|
::new (S.Context) VirtualInheritanceAttr(Attr.getRange(), S.Context));
|
|
}
|
|
|
|
static void handlePortabilityAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.MicrosoftExt) {
|
|
AttributeList::Kind Kind = Attr.getKind();
|
|
if (Kind == AttributeList::AT_Ptr32)
|
|
D->addAttr(
|
|
::new (S.Context) Ptr32Attr(Attr.getRange(), S.Context));
|
|
else if (Kind == AttributeList::AT_Ptr64)
|
|
D->addAttr(
|
|
::new (S.Context) Ptr64Attr(Attr.getRange(), S.Context));
|
|
else if (Kind == AttributeList::AT_Win64)
|
|
D->addAttr(
|
|
::new (S.Context) Win64Attr(Attr.getRange(), S.Context));
|
|
} else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
|
|
}
|
|
|
|
static void handleForceInlineAttr(Sema &S, Decl *D, const AttributeList &Attr) {
|
|
if (S.LangOpts.MicrosoftExt)
|
|
D->addAttr(::new (S.Context) ForceInlineAttr(Attr.getRange(), S.Context));
|
|
else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Top Level Sema Entry Points
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static void ProcessNonInheritableDeclAttr(Sema &S, Scope *scope, Decl *D,
|
|
const AttributeList &Attr) {
|
|
switch (Attr.getKind()) {
|
|
case AttributeList::AT_CUDADevice: handleDeviceAttr (S, D, Attr); break;
|
|
case AttributeList::AT_CUDAHost: handleHostAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Overloadable:handleOverloadableAttr(S, D, Attr); break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ProcessInheritableDeclAttr(Sema &S, Scope *scope, Decl *D,
|
|
const AttributeList &Attr) {
|
|
switch (Attr.getKind()) {
|
|
case AttributeList::AT_IBAction: handleIBAction(S, D, Attr); break;
|
|
case AttributeList::AT_IBOutlet: handleIBOutlet(S, D, Attr); break;
|
|
case AttributeList::AT_IBOutletCollection:
|
|
handleIBOutletCollection(S, D, Attr); break;
|
|
case AttributeList::AT_AddressSpace:
|
|
case AttributeList::AT_OpenCLImageAccess:
|
|
case AttributeList::AT_ObjCGC:
|
|
case AttributeList::AT_VectorSize:
|
|
case AttributeList::AT_NeonVectorType:
|
|
case AttributeList::AT_NeonPolyVectorType:
|
|
// Ignore these, these are type attributes, handled by
|
|
// ProcessTypeAttributes.
|
|
break;
|
|
case AttributeList::AT_CUDADevice:
|
|
case AttributeList::AT_CUDAHost:
|
|
case AttributeList::AT_Overloadable:
|
|
// Ignore, this is a non-inheritable attribute, handled
|
|
// by ProcessNonInheritableDeclAttr.
|
|
break;
|
|
case AttributeList::AT_Alias: handleAliasAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Aligned: handleAlignedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_AllocSize: handleAllocSizeAttr (S, D, Attr); break;
|
|
case AttributeList::AT_AlwaysInline:
|
|
handleAlwaysInlineAttr (S, D, Attr); break;
|
|
case AttributeList::AT_AnalyzerNoReturn:
|
|
handleAnalyzerNoReturnAttr (S, D, Attr); break;
|
|
case AttributeList::AT_TLSModel: handleTLSModelAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Annotate: handleAnnotateAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Availability:handleAvailabilityAttr(S, D, Attr); break;
|
|
case AttributeList::AT_CarriesDependency:
|
|
handleDependencyAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Common: handleCommonAttr (S, D, Attr); break;
|
|
case AttributeList::AT_CUDAConstant:handleConstantAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Constructor: handleConstructorAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Deprecated:
|
|
handleAttrWithMessage<DeprecatedAttr>(S, D, Attr, "deprecated");
|
|
break;
|
|
case AttributeList::AT_Destructor: handleDestructorAttr (S, D, Attr); break;
|
|
case AttributeList::AT_ExtVectorType:
|
|
handleExtVectorTypeAttr(S, scope, D, Attr);
|
|
break;
|
|
case AttributeList::AT_MinSize:
|
|
handleMinSizeAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Format: handleFormatAttr (S, D, Attr); break;
|
|
case AttributeList::AT_FormatArg: handleFormatArgAttr (S, D, Attr); break;
|
|
case AttributeList::AT_CUDAGlobal: handleGlobalAttr (S, D, Attr); break;
|
|
case AttributeList::AT_GNUInline: handleGNUInlineAttr (S, D, Attr); break;
|
|
case AttributeList::AT_CUDALaunchBounds:
|
|
handleLaunchBoundsAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Mode: handleModeAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Malloc: handleMallocAttr (S, D, Attr); break;
|
|
case AttributeList::AT_MayAlias: handleMayAliasAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NoCommon: handleNoCommonAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NonNull: handleNonNullAttr (S, D, Attr); break;
|
|
case AttributeList::AT_ownership_returns:
|
|
case AttributeList::AT_ownership_takes:
|
|
case AttributeList::AT_ownership_holds:
|
|
handleOwnershipAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Cold: handleColdAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Hot: handleHotAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Naked: handleNakedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NoReturn: handleNoReturnAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NoThrow: handleNothrowAttr (S, D, Attr); break;
|
|
case AttributeList::AT_CUDAShared: handleSharedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_VecReturn: handleVecReturnAttr (S, D, Attr); break;
|
|
|
|
case AttributeList::AT_ObjCOwnership:
|
|
handleObjCOwnershipAttr(S, D, Attr); break;
|
|
case AttributeList::AT_ObjCPreciseLifetime:
|
|
handleObjCPreciseLifetimeAttr(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_ObjCReturnsInnerPointer:
|
|
handleObjCReturnsInnerPointerAttr(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_ObjCRequiresSuper:
|
|
handleObjCRequiresSuperAttr(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_NSBridged:
|
|
handleNSBridgedAttr(S, scope, D, Attr); break;
|
|
|
|
case AttributeList::AT_CFAuditedTransfer:
|
|
case AttributeList::AT_CFUnknownTransfer:
|
|
handleCFTransferAttr(S, D, Attr); break;
|
|
|
|
// Checker-specific.
|
|
case AttributeList::AT_CFConsumed:
|
|
case AttributeList::AT_NSConsumed: handleNSConsumedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NSConsumesSelf:
|
|
handleNSConsumesSelfAttr(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_NSReturnsAutoreleased:
|
|
case AttributeList::AT_NSReturnsNotRetained:
|
|
case AttributeList::AT_CFReturnsNotRetained:
|
|
case AttributeList::AT_NSReturnsRetained:
|
|
case AttributeList::AT_CFReturnsRetained:
|
|
handleNSReturnsRetainedAttr(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_WorkGroupSizeHint:
|
|
case AttributeList::AT_ReqdWorkGroupSize:
|
|
handleWorkGroupSize(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_InitPriority:
|
|
handleInitPriorityAttr(S, D, Attr); break;
|
|
|
|
case AttributeList::AT_Packed: handlePackedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Section: handleSectionAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Unavailable:
|
|
handleAttrWithMessage<UnavailableAttr>(S, D, Attr, "unavailable");
|
|
break;
|
|
case AttributeList::AT_ArcWeakrefUnavailable:
|
|
handleArcWeakrefUnavailableAttr (S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ObjCRootClass:
|
|
handleObjCRootClassAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ObjCRequiresPropertyDefs:
|
|
handleObjCRequiresPropertyDefsAttr (S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Unused: handleUnusedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_ReturnsTwice:
|
|
handleReturnsTwiceAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Used: handleUsedAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Visibility: handleVisibilityAttr (S, D, Attr); break;
|
|
case AttributeList::AT_WarnUnusedResult: handleWarnUnusedResult(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Weak: handleWeakAttr (S, D, Attr); break;
|
|
case AttributeList::AT_WeakRef: handleWeakRefAttr (S, D, Attr); break;
|
|
case AttributeList::AT_WeakImport: handleWeakImportAttr (S, D, Attr); break;
|
|
case AttributeList::AT_TransparentUnion:
|
|
handleTransparentUnionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ObjCException:
|
|
handleObjCExceptionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ObjCMethodFamily:
|
|
handleObjCMethodFamilyAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ObjCNSObject:handleObjCNSObject (S, D, Attr); break;
|
|
case AttributeList::AT_Blocks: handleBlocksAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Sentinel: handleSentinelAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Const: handleConstAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Pure: handlePureAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Cleanup: handleCleanupAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NoDebug: handleNoDebugAttr (S, D, Attr); break;
|
|
case AttributeList::AT_NoInline: handleNoInlineAttr (S, D, Attr); break;
|
|
case AttributeList::AT_Regparm: handleRegparmAttr (S, D, Attr); break;
|
|
case AttributeList::IgnoredAttribute:
|
|
// Just ignore
|
|
break;
|
|
case AttributeList::AT_NoInstrumentFunction: // Interacts with -pg.
|
|
handleNoInstrumentFunctionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_StdCall:
|
|
case AttributeList::AT_CDecl:
|
|
case AttributeList::AT_FastCall:
|
|
case AttributeList::AT_ThisCall:
|
|
case AttributeList::AT_Pascal:
|
|
case AttributeList::AT_Pcs:
|
|
case AttributeList::AT_PnaclCall:
|
|
handleCallConvAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_OpenCLKernel:
|
|
handleOpenCLKernelAttr(S, D, Attr);
|
|
break;
|
|
|
|
// Microsoft attributes:
|
|
case AttributeList::AT_MsStruct:
|
|
handleMsStructAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Uuid:
|
|
handleUuidAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_SingleInheritance:
|
|
case AttributeList::AT_MultipleInheritance:
|
|
case AttributeList::AT_VirtualInheritance:
|
|
handleInheritanceAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Win64:
|
|
case AttributeList::AT_Ptr32:
|
|
case AttributeList::AT_Ptr64:
|
|
handlePortabilityAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ForceInline:
|
|
handleForceInlineAttr(S, D, Attr);
|
|
break;
|
|
|
|
// Thread safety attributes:
|
|
case AttributeList::AT_GuardedVar:
|
|
handleGuardedVarAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_PtGuardedVar:
|
|
handlePtGuardedVarAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ScopedLockable:
|
|
handleScopedLockableAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_NoAddressSafetyAnalysis:
|
|
handleNoAddressSafetyAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_NoThreadSafetyAnalysis:
|
|
handleNoThreadSafetyAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_Lockable:
|
|
handleLockableAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_GuardedBy:
|
|
handleGuardedByAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_PtGuardedBy:
|
|
handlePtGuardedByAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ExclusiveLockFunction:
|
|
handleExclusiveLockFunctionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ExclusiveLocksRequired:
|
|
handleExclusiveLocksRequiredAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_ExclusiveTrylockFunction:
|
|
handleExclusiveTrylockFunctionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_LockReturned:
|
|
handleLockReturnedAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_LocksExcluded:
|
|
handleLocksExcludedAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_SharedLockFunction:
|
|
handleSharedLockFunctionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_SharedLocksRequired:
|
|
handleSharedLocksRequiredAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_SharedTrylockFunction:
|
|
handleSharedTrylockFunctionAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_UnlockFunction:
|
|
handleUnlockFunAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_AcquiredBefore:
|
|
handleAcquiredBeforeAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_AcquiredAfter:
|
|
handleAcquiredAfterAttr(S, D, Attr);
|
|
break;
|
|
|
|
// Type safety attributes.
|
|
case AttributeList::AT_ArgumentWithTypeTag:
|
|
handleArgumentWithTypeTagAttr(S, D, Attr);
|
|
break;
|
|
case AttributeList::AT_TypeTagForDatatype:
|
|
handleTypeTagForDatatypeAttr(S, D, Attr);
|
|
break;
|
|
|
|
default:
|
|
// Ask target about the attribute.
|
|
const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema();
|
|
if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S))
|
|
S.Diag(Attr.getLoc(), Attr.isDeclspecAttribute() ?
|
|
diag::warn_unhandled_ms_attribute_ignored :
|
|
diag::warn_unknown_attribute_ignored) << Attr.getName();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/// ProcessDeclAttribute - Apply the specific attribute to the specified decl if
|
|
/// the attribute applies to decls. If the attribute is a type attribute, just
|
|
/// silently ignore it if a GNU attribute. FIXME: Applying a C++0x attribute to
|
|
/// the wrong thing is illegal (C++0x [dcl.attr.grammar]/4).
|
|
static void ProcessDeclAttribute(Sema &S, Scope *scope, Decl *D,
|
|
const AttributeList &Attr,
|
|
bool NonInheritable, bool Inheritable) {
|
|
if (Attr.isInvalid())
|
|
return;
|
|
|
|
// Type attributes are still treated as declaration attributes by
|
|
// ParseMicrosoftTypeAttributes and ParseBorlandTypeAttributes. We don't
|
|
// want to process them, however, because we will simply warn about ignoring
|
|
// them. So instead, we will bail out early.
|
|
if (Attr.isMSTypespecAttribute())
|
|
return;
|
|
|
|
if (NonInheritable)
|
|
ProcessNonInheritableDeclAttr(S, scope, D, Attr);
|
|
|
|
if (Inheritable)
|
|
ProcessInheritableDeclAttr(S, scope, D, Attr);
|
|
}
|
|
|
|
/// ProcessDeclAttributeList - Apply all the decl attributes in the specified
|
|
/// attribute list to the specified decl, ignoring any type attributes.
|
|
void Sema::ProcessDeclAttributeList(Scope *S, Decl *D,
|
|
const AttributeList *AttrList,
|
|
bool NonInheritable, bool Inheritable) {
|
|
for (const AttributeList* l = AttrList; l; l = l->getNext()) {
|
|
ProcessDeclAttribute(*this, S, D, *l, NonInheritable, Inheritable);
|
|
}
|
|
|
|
// GCC accepts
|
|
// static int a9 __attribute__((weakref));
|
|
// but that looks really pointless. We reject it.
|
|
if (Inheritable && D->hasAttr<WeakRefAttr>() && !D->hasAttr<AliasAttr>()) {
|
|
Diag(AttrList->getLoc(), diag::err_attribute_weakref_without_alias) <<
|
|
dyn_cast<NamedDecl>(D)->getNameAsString();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Annotation attributes are the only attributes allowed after an access
|
|
// specifier.
|
|
bool Sema::ProcessAccessDeclAttributeList(AccessSpecDecl *ASDecl,
|
|
const AttributeList *AttrList) {
|
|
for (const AttributeList* l = AttrList; l; l = l->getNext()) {
|
|
if (l->getKind() == AttributeList::AT_Annotate) {
|
|
handleAnnotateAttr(*this, ASDecl, *l);
|
|
} else {
|
|
Diag(l->getLoc(), diag::err_only_annotate_after_access_spec);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// checkUnusedDeclAttributes - Check a list of attributes to see if it
|
|
/// contains any decl attributes that we should warn about.
|
|
static void checkUnusedDeclAttributes(Sema &S, const AttributeList *A) {
|
|
for ( ; A; A = A->getNext()) {
|
|
// Only warn if the attribute is an unignored, non-type attribute.
|
|
if (A->isUsedAsTypeAttr()) continue;
|
|
if (A->getKind() == AttributeList::IgnoredAttribute) continue;
|
|
|
|
if (A->getKind() == AttributeList::UnknownAttribute) {
|
|
S.Diag(A->getLoc(), diag::warn_unknown_attribute_ignored)
|
|
<< A->getName() << A->getRange();
|
|
} else {
|
|
S.Diag(A->getLoc(), diag::warn_attribute_not_on_decl)
|
|
<< A->getName() << A->getRange();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// checkUnusedDeclAttributes - Given a declarator which is not being
|
|
/// used to build a declaration, complain about any decl attributes
|
|
/// which might be lying around on it.
|
|
void Sema::checkUnusedDeclAttributes(Declarator &D) {
|
|
::checkUnusedDeclAttributes(*this, D.getDeclSpec().getAttributes().getList());
|
|
::checkUnusedDeclAttributes(*this, D.getAttributes());
|
|
for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i)
|
|
::checkUnusedDeclAttributes(*this, D.getTypeObject(i).getAttrs());
|
|
}
|
|
|
|
/// DeclClonePragmaWeak - clone existing decl (maybe definition),
|
|
/// \#pragma weak needs a non-definition decl and source may not have one.
|
|
NamedDecl * Sema::DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II,
|
|
SourceLocation Loc) {
|
|
assert(isa<FunctionDecl>(ND) || isa<VarDecl>(ND));
|
|
NamedDecl *NewD = 0;
|
|
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
|
|
FunctionDecl *NewFD;
|
|
// FIXME: Missing call to CheckFunctionDeclaration().
|
|
// FIXME: Mangling?
|
|
// FIXME: Is the qualifier info correct?
|
|
// FIXME: Is the DeclContext correct?
|
|
NewFD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(),
|
|
Loc, Loc, DeclarationName(II),
|
|
FD->getType(), FD->getTypeSourceInfo(),
|
|
SC_None, SC_None,
|
|
false/*isInlineSpecified*/,
|
|
FD->hasPrototype(),
|
|
false/*isConstexprSpecified*/);
|
|
NewD = NewFD;
|
|
|
|
if (FD->getQualifier())
|
|
NewFD->setQualifierInfo(FD->getQualifierLoc());
|
|
|
|
// Fake up parameter variables; they are declared as if this were
|
|
// a typedef.
|
|
QualType FDTy = FD->getType();
|
|
if (const FunctionProtoType *FT = FDTy->getAs<FunctionProtoType>()) {
|
|
SmallVector<ParmVarDecl*, 16> Params;
|
|
for (FunctionProtoType::arg_type_iterator AI = FT->arg_type_begin(),
|
|
AE = FT->arg_type_end(); AI != AE; ++AI) {
|
|
ParmVarDecl *Param = BuildParmVarDeclForTypedef(NewFD, Loc, *AI);
|
|
Param->setScopeInfo(0, Params.size());
|
|
Params.push_back(Param);
|
|
}
|
|
NewFD->setParams(Params);
|
|
}
|
|
} else if (VarDecl *VD = dyn_cast<VarDecl>(ND)) {
|
|
NewD = VarDecl::Create(VD->getASTContext(), VD->getDeclContext(),
|
|
VD->getInnerLocStart(), VD->getLocation(), II,
|
|
VD->getType(), VD->getTypeSourceInfo(),
|
|
VD->getStorageClass(),
|
|
VD->getStorageClassAsWritten());
|
|
if (VD->getQualifier()) {
|
|
VarDecl *NewVD = cast<VarDecl>(NewD);
|
|
NewVD->setQualifierInfo(VD->getQualifierLoc());
|
|
}
|
|
}
|
|
return NewD;
|
|
}
|
|
|
|
/// DeclApplyPragmaWeak - A declaration (maybe definition) needs \#pragma weak
|
|
/// applied to it, possibly with an alias.
|
|
void Sema::DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W) {
|
|
if (W.getUsed()) return; // only do this once
|
|
W.setUsed(true);
|
|
if (W.getAlias()) { // clone decl, impersonate __attribute(weak,alias(...))
|
|
IdentifierInfo *NDId = ND->getIdentifier();
|
|
NamedDecl *NewD = DeclClonePragmaWeak(ND, W.getAlias(), W.getLocation());
|
|
NewD->addAttr(::new (Context) AliasAttr(W.getLocation(), Context,
|
|
NDId->getName()));
|
|
NewD->addAttr(::new (Context) WeakAttr(W.getLocation(), Context));
|
|
WeakTopLevelDecl.push_back(NewD);
|
|
// FIXME: "hideous" code from Sema::LazilyCreateBuiltin
|
|
// to insert Decl at TU scope, sorry.
|
|
DeclContext *SavedContext = CurContext;
|
|
CurContext = Context.getTranslationUnitDecl();
|
|
PushOnScopeChains(NewD, S);
|
|
CurContext = SavedContext;
|
|
} else { // just add weak to existing
|
|
ND->addAttr(::new (Context) WeakAttr(W.getLocation(), Context));
|
|
}
|
|
}
|
|
|
|
/// ProcessDeclAttributes - Given a declarator (PD) with attributes indicated in
|
|
/// it, apply them to D. This is a bit tricky because PD can have attributes
|
|
/// specified in many different places, and we need to find and apply them all.
|
|
void Sema::ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD,
|
|
bool NonInheritable, bool Inheritable) {
|
|
// It's valid to "forward-declare" #pragma weak, in which case we
|
|
// have to do this.
|
|
if (Inheritable) {
|
|
LoadExternalWeakUndeclaredIdentifiers();
|
|
if (!WeakUndeclaredIdentifiers.empty()) {
|
|
if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
|
|
if (IdentifierInfo *Id = ND->getIdentifier()) {
|
|
llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator I
|
|
= WeakUndeclaredIdentifiers.find(Id);
|
|
if (I != WeakUndeclaredIdentifiers.end() && ND->hasLinkage()) {
|
|
WeakInfo W = I->second;
|
|
DeclApplyPragmaWeak(S, ND, W);
|
|
WeakUndeclaredIdentifiers[Id] = W;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Apply decl attributes from the DeclSpec if present.
|
|
if (const AttributeList *Attrs = PD.getDeclSpec().getAttributes().getList())
|
|
ProcessDeclAttributeList(S, D, Attrs, NonInheritable, Inheritable);
|
|
|
|
// Walk the declarator structure, applying decl attributes that were in a type
|
|
// position to the decl itself. This handles cases like:
|
|
// int *__attr__(x)** D;
|
|
// when X is a decl attribute.
|
|
for (unsigned i = 0, e = PD.getNumTypeObjects(); i != e; ++i)
|
|
if (const AttributeList *Attrs = PD.getTypeObject(i).getAttrs())
|
|
ProcessDeclAttributeList(S, D, Attrs, NonInheritable, Inheritable);
|
|
|
|
// Finally, apply any attributes on the decl itself.
|
|
if (const AttributeList *Attrs = PD.getAttributes())
|
|
ProcessDeclAttributeList(S, D, Attrs, NonInheritable, Inheritable);
|
|
}
|
|
|
|
/// Is the given declaration allowed to use a forbidden type?
|
|
static bool isForbiddenTypeAllowed(Sema &S, Decl *decl) {
|
|
// Private ivars are always okay. Unfortunately, people don't
|
|
// always properly make their ivars private, even in system headers.
|
|
// Plus we need to make fields okay, too.
|
|
// Function declarations in sys headers will be marked unavailable.
|
|
if (!isa<FieldDecl>(decl) && !isa<ObjCPropertyDecl>(decl) &&
|
|
!isa<FunctionDecl>(decl))
|
|
return false;
|
|
|
|
// Require it to be declared in a system header.
|
|
return S.Context.getSourceManager().isInSystemHeader(decl->getLocation());
|
|
}
|
|
|
|
/// Handle a delayed forbidden-type diagnostic.
|
|
static void handleDelayedForbiddenType(Sema &S, DelayedDiagnostic &diag,
|
|
Decl *decl) {
|
|
if (decl && isForbiddenTypeAllowed(S, decl)) {
|
|
decl->addAttr(new (S.Context) UnavailableAttr(diag.Loc, S.Context,
|
|
"this system declaration uses an unsupported type"));
|
|
return;
|
|
}
|
|
if (S.getLangOpts().ObjCAutoRefCount)
|
|
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(decl)) {
|
|
// FIXME: we may want to suppress diagnostics for all
|
|
// kind of forbidden type messages on unavailable functions.
|
|
if (FD->hasAttr<UnavailableAttr>() &&
|
|
diag.getForbiddenTypeDiagnostic() ==
|
|
diag::err_arc_array_param_no_ownership) {
|
|
diag.Triggered = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
S.Diag(diag.Loc, diag.getForbiddenTypeDiagnostic())
|
|
<< diag.getForbiddenTypeOperand() << diag.getForbiddenTypeArgument();
|
|
diag.Triggered = true;
|
|
}
|
|
|
|
void Sema::PopParsingDeclaration(ParsingDeclState state, Decl *decl) {
|
|
assert(DelayedDiagnostics.getCurrentPool());
|
|
DelayedDiagnosticPool &poppedPool = *DelayedDiagnostics.getCurrentPool();
|
|
DelayedDiagnostics.popWithoutEmitting(state);
|
|
|
|
// When delaying diagnostics to run in the context of a parsed
|
|
// declaration, we only want to actually emit anything if parsing
|
|
// succeeds.
|
|
if (!decl) return;
|
|
|
|
// We emit all the active diagnostics in this pool or any of its
|
|
// parents. In general, we'll get one pool for the decl spec
|
|
// and a child pool for each declarator; in a decl group like:
|
|
// deprecated_typedef foo, *bar, baz();
|
|
// only the declarator pops will be passed decls. This is correct;
|
|
// we really do need to consider delayed diagnostics from the decl spec
|
|
// for each of the different declarations.
|
|
const DelayedDiagnosticPool *pool = &poppedPool;
|
|
do {
|
|
for (DelayedDiagnosticPool::pool_iterator
|
|
i = pool->pool_begin(), e = pool->pool_end(); i != e; ++i) {
|
|
// This const_cast is a bit lame. Really, Triggered should be mutable.
|
|
DelayedDiagnostic &diag = const_cast<DelayedDiagnostic&>(*i);
|
|
if (diag.Triggered)
|
|
continue;
|
|
|
|
switch (diag.Kind) {
|
|
case DelayedDiagnostic::Deprecation:
|
|
// Don't bother giving deprecation diagnostics if the decl is invalid.
|
|
if (!decl->isInvalidDecl())
|
|
HandleDelayedDeprecationCheck(diag, decl);
|
|
break;
|
|
|
|
case DelayedDiagnostic::Access:
|
|
HandleDelayedAccessCheck(diag, decl);
|
|
break;
|
|
|
|
case DelayedDiagnostic::ForbiddenType:
|
|
handleDelayedForbiddenType(*this, diag, decl);
|
|
break;
|
|
}
|
|
}
|
|
} while ((pool = pool->getParent()));
|
|
}
|
|
|
|
/// Given a set of delayed diagnostics, re-emit them as if they had
|
|
/// been delayed in the current context instead of in the given pool.
|
|
/// Essentially, this just moves them to the current pool.
|
|
void Sema::redelayDiagnostics(DelayedDiagnosticPool &pool) {
|
|
DelayedDiagnosticPool *curPool = DelayedDiagnostics.getCurrentPool();
|
|
assert(curPool && "re-emitting in undelayed context not supported");
|
|
curPool->steal(pool);
|
|
}
|
|
|
|
static bool isDeclDeprecated(Decl *D) {
|
|
do {
|
|
if (D->isDeprecated())
|
|
return true;
|
|
// A category implicitly has the availability of the interface.
|
|
if (const ObjCCategoryDecl *CatD = dyn_cast<ObjCCategoryDecl>(D))
|
|
return CatD->getClassInterface()->isDeprecated();
|
|
} while ((D = cast_or_null<Decl>(D->getDeclContext())));
|
|
return false;
|
|
}
|
|
|
|
static void
|
|
DoEmitDeprecationWarning(Sema &S, const NamedDecl *D, StringRef Message,
|
|
SourceLocation Loc,
|
|
const ObjCInterfaceDecl *UnknownObjCClass,
|
|
const ObjCPropertyDecl *ObjCPropery) {
|
|
DeclarationName Name = D->getDeclName();
|
|
if (!Message.empty()) {
|
|
S.Diag(Loc, diag::warn_deprecated_message) << Name << Message;
|
|
S.Diag(D->getLocation(),
|
|
isa<ObjCMethodDecl>(D) ? diag::note_method_declared_at
|
|
: diag::note_previous_decl) << Name;
|
|
if (ObjCPropery)
|
|
S.Diag(ObjCPropery->getLocation(), diag::note_property_attribute)
|
|
<< ObjCPropery->getDeclName() << 0;
|
|
} else if (!UnknownObjCClass) {
|
|
S.Diag(Loc, diag::warn_deprecated) << D->getDeclName();
|
|
S.Diag(D->getLocation(),
|
|
isa<ObjCMethodDecl>(D) ? diag::note_method_declared_at
|
|
: diag::note_previous_decl) << Name;
|
|
if (ObjCPropery)
|
|
S.Diag(ObjCPropery->getLocation(), diag::note_property_attribute)
|
|
<< ObjCPropery->getDeclName() << 0;
|
|
} else {
|
|
S.Diag(Loc, diag::warn_deprecated_fwdclass_message) << Name;
|
|
S.Diag(UnknownObjCClass->getLocation(), diag::note_forward_class);
|
|
}
|
|
}
|
|
|
|
void Sema::HandleDelayedDeprecationCheck(DelayedDiagnostic &DD,
|
|
Decl *Ctx) {
|
|
if (isDeclDeprecated(Ctx))
|
|
return;
|
|
|
|
DD.Triggered = true;
|
|
DoEmitDeprecationWarning(*this, DD.getDeprecationDecl(),
|
|
DD.getDeprecationMessage(), DD.Loc,
|
|
DD.getUnknownObjCClass(),
|
|
DD.getObjCProperty());
|
|
}
|
|
|
|
void Sema::EmitDeprecationWarning(NamedDecl *D, StringRef Message,
|
|
SourceLocation Loc,
|
|
const ObjCInterfaceDecl *UnknownObjCClass,
|
|
const ObjCPropertyDecl *ObjCProperty) {
|
|
// Delay if we're currently parsing a declaration.
|
|
if (DelayedDiagnostics.shouldDelayDiagnostics()) {
|
|
DelayedDiagnostics.add(DelayedDiagnostic::makeDeprecation(Loc, D,
|
|
UnknownObjCClass,
|
|
ObjCProperty,
|
|
Message));
|
|
return;
|
|
}
|
|
|
|
// Otherwise, don't warn if our current context is deprecated.
|
|
if (isDeclDeprecated(cast<Decl>(getCurLexicalContext())))
|
|
return;
|
|
DoEmitDeprecationWarning(*this, D, Message, Loc, UnknownObjCClass, ObjCProperty);
|
|
}
|