forked from OSchip/llvm-project
3200 lines
108 KiB
C++
3200 lines
108 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/DeclCXX.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/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 "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 {
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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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ExpectedParameterOrMethod,
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ExpectedFunctionMethodOrBlock,
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ExpectedClassOrVirtualMethod,
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ExpectedFunctionMethodOrParameter,
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ExpectedClass,
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ExpectedVirtualMethod,
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ExpectedClassMember,
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ExpectedVariable,
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ExpectedMethod,
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ExpectedVariableFunctionOrLabel
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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, TypedefNameDecl really *ought* to be a DeclaratorDecl.
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return isa<DeclaratorDecl>(d) || isa<BlockDecl>(d) || isa<TypedefNameDecl>(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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//===----------------------------------------------------------------------===//
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// Attribute Implementations
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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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static void HandleExtVectorTypeAttr(Scope *scope, Decl *d,
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const AttributeList &Attr, Sema &S) {
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TypedefNameDecl *tDecl = dyn_cast<TypedefNameDecl>(d);
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if (tDecl == 0) {
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S.Diag(Attr.getLoc(), diag::err_typecheck_ext_vector_not_typedef);
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return;
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}
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QualType curType = tDecl->getUnderlyingType();
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Expr *sizeExpr;
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// Special case where the argument is a template id.
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if (Attr.getParameterName()) {
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CXXScopeSpec SS;
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UnqualifiedId id;
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id.setIdentifier(Attr.getParameterName(), Attr.getLoc());
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sizeExpr = S.ActOnIdExpression(scope, SS, id, false, false).takeAs<Expr>();
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} else {
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// check the attribute arguments.
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if (Attr.getNumArgs() != 1) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
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return;
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}
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sizeExpr = Attr.getArg(0);
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}
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// Instantiate/Install the vector type, and let Sema build the type for us.
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// This will run the reguired checks.
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QualType T = S.BuildExtVectorType(curType, sizeExpr, Attr.getLoc());
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if (!T.isNull()) {
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// FIXME: preserve the old source info.
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tDecl->setTypeSourceInfo(S.Context.getTrivialTypeSourceInfo(T));
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// Remember this typedef decl, we will need it later for diagnostics.
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S.ExtVectorDecls.push_back(tDecl);
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}
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}
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static void HandlePackedAttr(Decl *d, const AttributeList &Attr, Sema &S) {
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// check the attribute arguments.
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if (Attr.getNumArgs() > 0) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
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return;
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}
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if (TagDecl *TD = dyn_cast<TagDecl>(d))
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TD->addAttr(::new (S.Context) PackedAttr(Attr.getLoc(), S.Context));
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else if (FieldDecl *FD = dyn_cast<FieldDecl>(d)) {
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// If the alignment is less than or equal to 8 bits, the packed attribute
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// has no effect.
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if (!FD->getType()->isIncompleteType() &&
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S.Context.getTypeAlign(FD->getType()) <= 8)
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S.Diag(Attr.getLoc(), diag::warn_attribute_ignored_for_field_of_type)
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<< Attr.getName() << FD->getType();
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else
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FD->addAttr(::new (S.Context) PackedAttr(Attr.getLoc(), S.Context));
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} else
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S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
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}
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static void HandleIBAction(Decl *d, const AttributeList &Attr, Sema &S) {
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// check the attribute arguments.
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if (Attr.getNumArgs() > 0) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
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return;
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}
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// The IBAction attributes only apply to instance methods.
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if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d))
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if (MD->isInstanceMethod()) {
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d->addAttr(::new (S.Context) IBActionAttr(Attr.getLoc(), S.Context));
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return;
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}
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S.Diag(Attr.getLoc(), diag::warn_attribute_ibaction) << Attr.getName();
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}
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static void HandleIBOutlet(Decl *d, const AttributeList &Attr, Sema &S) {
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// check the attribute arguments.
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if (Attr.getNumArgs() > 0) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
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return;
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}
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// The IBOutlet attributes only apply to instance variables of
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// Objective-C classes.
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if (isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d)) {
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d->addAttr(::new (S.Context) IBOutletAttr(Attr.getLoc(), S.Context));
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return;
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}
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S.Diag(Attr.getLoc(), diag::warn_attribute_iboutlet) << Attr.getName();
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}
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static void HandleIBOutletCollection(Decl *d, const AttributeList &Attr,
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Sema &S) {
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// The iboutletcollection attribute can have zero or one arguments.
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if (Attr.getParameterName() && Attr.getNumArgs() > 0) {
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S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
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return;
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}
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// The IBOutletCollection attributes only apply to instance variables of
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// Objective-C classes.
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if (!(isa<ObjCIvarDecl>(d) || isa<ObjCPropertyDecl>(d))) {
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S.Diag(Attr.getLoc(), diag::warn_attribute_iboutlet) << Attr.getName();
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return;
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}
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if (const ValueDecl *VD = dyn_cast<ValueDecl>(d))
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if (!VD->getType()->getAs<ObjCObjectPointerType>()) {
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S.Diag(Attr.getLoc(), diag::err_iboutletcollection_object_type)
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<< VD->getType() << 0;
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return;
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}
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if (const ObjCPropertyDecl *PD = dyn_cast<ObjCPropertyDecl>(d))
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if (!PD->getType()->getAs<ObjCObjectPointerType>()) {
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S.Diag(Attr.getLoc(), diag::err_iboutletcollection_object_type)
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<< PD->getType() << 1;
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return;
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}
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IdentifierInfo *II = Attr.getParameterName();
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if (!II)
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II = &S.Context.Idents.get("id");
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ParsedType TypeRep = S.getTypeName(*II, Attr.getLoc(),
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S.getScopeForContext(d->getDeclContext()->getParent()));
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if (!TypeRep) {
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S.Diag(Attr.getLoc(), diag::err_iboutletcollection_type) << II;
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return;
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}
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QualType QT = TypeRep.get();
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// Diagnose use of non-object type in iboutletcollection attribute.
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// FIXME. Gnu attribute extension ignores use of builtin types in
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// attributes. So, __attribute__((iboutletcollection(char))) will be
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// treated as __attribute__((iboutletcollection())).
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if (!QT->isObjCIdType() && !QT->isObjCClassType() &&
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!QT->isObjCObjectType()) {
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S.Diag(Attr.getLoc(), diag::err_iboutletcollection_type) << II;
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return;
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}
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d->addAttr(::new (S.Context) IBOutletCollectionAttr(Attr.getLoc(), S.Context,
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QT));
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}
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static void HandleNonNullAttr(Decl *d, const AttributeList &Attr, Sema &S) {
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// GCC ignores the nonnull attribute on K&R style function prototypes, so we
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// ignore it as well
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if (!isFunctionOrMethod(d) || !hasFunctionProto(d)) {
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S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
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<< Attr.getName() << ExpectedFunction;
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return;
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}
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// In C++ the implicit 'this' function parameter also counts, and they are
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// counted from one.
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bool HasImplicitThisParam = isInstanceMethod(d);
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unsigned NumArgs = getFunctionOrMethodNumArgs(d) + HasImplicitThisParam;
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// The nonnull attribute only applies to pointers.
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llvm::SmallVector<unsigned, 10> NonNullArgs;
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for (AttributeList::arg_iterator I=Attr.arg_begin(),
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E=Attr.arg_end(); I!=E; ++I) {
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// The argument must be an integer constant expression.
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Expr *Ex = *I;
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llvm::APSInt ArgNum(32);
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if (Ex->isTypeDependent() || Ex->isValueDependent() ||
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!Ex->isIntegerConstantExpr(ArgNum, S.Context)) {
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S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
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<< "nonnull" << Ex->getSourceRange();
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return;
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}
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unsigned x = (unsigned) ArgNum.getZExtValue();
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if (x < 1 || x > NumArgs) {
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S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
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<< "nonnull" << I.getArgNum() << Ex->getSourceRange();
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return;
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}
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--x;
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if (HasImplicitThisParam) {
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if (x == 0) {
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S.Diag(Attr.getLoc(),
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diag::err_attribute_invalid_implicit_this_argument)
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<< "nonnull" << Ex->getSourceRange();
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return;
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}
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--x;
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}
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// Is the function argument a pointer type?
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QualType T = getFunctionOrMethodArgType(d, x).getNonReferenceType();
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if (!T->isAnyPointerType() && !T->isBlockPointerType()) {
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// FIXME: Should also highlight argument in decl.
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S.Diag(Attr.getLoc(), diag::warn_nonnull_pointers_only)
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<< "nonnull" << Ex->getSourceRange();
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continue;
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}
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NonNullArgs.push_back(x);
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}
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// If no arguments were specified to __attribute__((nonnull)) then all pointer
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// arguments have a nonnull attribute.
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if (NonNullArgs.empty()) {
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for (unsigned I = 0, E = getFunctionOrMethodNumArgs(d); I != E; ++I) {
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QualType T = getFunctionOrMethodArgType(d, I).getNonReferenceType();
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if (T->isAnyPointerType() || T->isBlockPointerType())
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NonNullArgs.push_back(I);
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else if (const RecordType *UT = T->getAsUnionType()) {
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if (UT && UT->getDecl()->hasAttr<TransparentUnionAttr>()) {
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RecordDecl *UD = UT->getDecl();
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for (RecordDecl::field_iterator it = UD->field_begin(),
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itend = UD->field_end(); it != itend; ++it) {
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T = it->getType();
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if (T->isAnyPointerType() || T->isBlockPointerType()) {
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NonNullArgs.push_back(I);
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break;
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}
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}
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}
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}
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}
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// No pointer arguments?
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if (NonNullArgs.empty()) {
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// Warn the trivial case only if attribute is not coming from a
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// macro instantiation.
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if (Attr.getLoc().isFileID())
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S.Diag(Attr.getLoc(), diag::warn_attribute_nonnull_no_pointers);
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return;
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}
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}
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unsigned* start = &NonNullArgs[0];
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unsigned size = NonNullArgs.size();
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llvm::array_pod_sort(start, start + size);
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d->addAttr(::new (S.Context) NonNullAttr(Attr.getLoc(), S.Context, start,
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size));
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}
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static void HandleOwnershipAttr(Decl *d, const AttributeList &AL, Sema &S) {
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// This attribute must be applied to a function declaration.
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// The first argument to the attribute must be a string,
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// the name of the resource, for example "malloc".
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// The following arguments must be argument indexes, the arguments must be
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// of integer type for Returns, otherwise of pointer type.
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// The difference between Holds and Takes is that a pointer may still be used
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// after being held. free() should be __attribute((ownership_takes)), whereas
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// a list append function may well be __attribute((ownership_holds)).
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if (!AL.getParameterName()) {
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S.Diag(AL.getLoc(), diag::err_attribute_argument_n_not_string)
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<< AL.getName()->getName() << 1;
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return;
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}
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// Figure out our Kind, and check arguments while we're at it.
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OwnershipAttr::OwnershipKind K;
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switch (AL.getKind()) {
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case AttributeList::AT_ownership_takes:
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K = OwnershipAttr::Takes;
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if (AL.getNumArgs() < 1) {
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S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments) << 2;
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return;
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}
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break;
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case AttributeList::AT_ownership_holds:
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K = OwnershipAttr::Holds;
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if (AL.getNumArgs() < 1) {
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S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments) << 2;
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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;
|
|
|
|
llvm::StringRef Module = AL.getParameterName()->getName();
|
|
|
|
// Normalize the argument, __foo__ becomes foo.
|
|
if (Module.startswith("__") && Module.endswith("__"))
|
|
Module = Module.substr(2, Module.size() - 4);
|
|
|
|
llvm::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;
|
|
}
|
|
default:
|
|
llvm_unreachable("Unknown ownership attribute");
|
|
} // 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!");
|
|
return false;
|
|
}
|
|
|
|
static void HandleWeakRefAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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 == 0 || Str->isWide()) {
|
|
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.getLoc(), S.Context,
|
|
Str->getString()));
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) WeakRefAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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 == 0 || Str->isWide()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "alias" << 1;
|
|
return;
|
|
}
|
|
|
|
if (S.Context.Target.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.getLoc(), S.Context,
|
|
Str->getString()));
|
|
}
|
|
|
|
static void HandleNakedAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
// Check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
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) NakedAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleAlwaysInlineAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
// 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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleMallocAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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.getLoc(), S.Context));
|
|
return;
|
|
}
|
|
}
|
|
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_malloc_pointer_only);
|
|
}
|
|
|
|
static void HandleMayAliasAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) MayAliasAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleNoCommonAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
assert(Attr.isInvalid() == false);
|
|
if (isa<VarDecl>(d))
|
|
d->addAttr(::new (S.Context) NoCommonAttr(Attr.getLoc(), S.Context));
|
|
else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
}
|
|
|
|
static void HandleCommonAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
assert(Attr.isInvalid() == false);
|
|
if (isa<VarDecl>(d))
|
|
d->addAttr(::new (S.Context) CommonAttr(Attr.getLoc(), S.Context));
|
|
else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
}
|
|
|
|
static void HandleNoReturnAttr(Decl *d, const AttributeList &attr, Sema &S) {
|
|
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.getLoc(), 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(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
|
|
// The checking path for 'noreturn' and 'analyzer_noreturn' are different
|
|
// because 'analyzer_noreturn' does not impact the type.
|
|
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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.getLoc(), S.Context));
|
|
}
|
|
|
|
// PS3 PPU-specific.
|
|
static void HandleVecReturnAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
/*
|
|
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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleDependencyAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariableFunctionOrLabel;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) UnusedAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleUsedAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleConstructorAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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.getLoc(), S.Context,
|
|
priority));
|
|
}
|
|
|
|
static void HandleDestructorAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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.getLoc(), S.Context,
|
|
priority));
|
|
}
|
|
|
|
static void HandleDeprecatedAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
unsigned NumArgs = Attr.getNumArgs();
|
|
if (NumArgs > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
// Handle the case where deprecated attribute has a text message.
|
|
llvm::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)
|
|
<< "deprecated";
|
|
return;
|
|
}
|
|
Str = SE->getString();
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) DeprecatedAttr(Attr.getLoc(), S.Context, Str));
|
|
}
|
|
|
|
static void HandleUnavailableAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
unsigned NumArgs = Attr.getNumArgs();
|
|
if (NumArgs > 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 1;
|
|
return;
|
|
}
|
|
|
|
// Handle the case where unavailable attribute has a text message.
|
|
llvm::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) << "unavailable";
|
|
return;
|
|
}
|
|
Str = SE->getString();
|
|
}
|
|
d->addAttr(::new (S.Context) UnavailableAttr(Attr.getLoc(), S.Context, Str));
|
|
}
|
|
|
|
static void HandleAvailabilityAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
IdentifierInfo *Platform = Attr.getParameterName();
|
|
SourceLocation PlatformLoc = Attr.getParameterLoc();
|
|
|
|
llvm::StringRef PlatformName
|
|
= AvailabilityAttr::getPrettyPlatformName(Platform->getName());
|
|
if (PlatformName.empty()) {
|
|
S.Diag(PlatformLoc, diag::warn_availability_unknown_platform)
|
|
<< Platform;
|
|
|
|
PlatformName = Platform->getName();
|
|
}
|
|
|
|
AvailabilityChange Introduced = Attr.getAvailabilityIntroduced();
|
|
AvailabilityChange Deprecated = Attr.getAvailabilityDeprecated();
|
|
AvailabilityChange Obsoleted = Attr.getAvailabilityObsoleted();
|
|
bool IsUnavailable = Attr.getUnavailableLoc().isValid();
|
|
|
|
// Ensure that Introduced < Deprecated < Obsoleted (although not all
|
|
// of these steps are needed).
|
|
if (Introduced.isValid() && Deprecated.isValid() &&
|
|
!(Introduced.Version < Deprecated.Version)) {
|
|
S.Diag(Introduced.KeywordLoc, diag::warn_availability_version_ordering)
|
|
<< 1 << PlatformName << Deprecated.Version.getAsString()
|
|
<< 0 << Introduced.Version.getAsString();
|
|
return;
|
|
}
|
|
|
|
if (Introduced.isValid() && Obsoleted.isValid() &&
|
|
!(Introduced.Version < Obsoleted.Version)) {
|
|
S.Diag(Introduced.KeywordLoc, diag::warn_availability_version_ordering)
|
|
<< 2 << PlatformName << Obsoleted.Version.getAsString()
|
|
<< 0 << Introduced.Version.getAsString();
|
|
return;
|
|
}
|
|
|
|
if (Deprecated.isValid() && Obsoleted.isValid() &&
|
|
!(Deprecated.Version < Obsoleted.Version)) {
|
|
S.Diag(Deprecated.KeywordLoc, diag::warn_availability_version_ordering)
|
|
<< 2 << PlatformName << Obsoleted.Version.getAsString()
|
|
<< 1 << Deprecated.Version.getAsString();
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) AvailabilityAttr(Attr.getLoc(), S.Context,
|
|
Platform,
|
|
Introduced.Version,
|
|
Deprecated.Version,
|
|
Obsoleted.Version,
|
|
IsUnavailable));
|
|
}
|
|
|
|
static void HandleVisibilityAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// 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 == 0 || Str->isWide()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "visibility" << 1;
|
|
return;
|
|
}
|
|
|
|
llvm::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")
|
|
type = VisibilityAttr::Protected;
|
|
else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_visibility) << TypeStr;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) VisibilityAttr(Attr.getLoc(), S.Context, type));
|
|
}
|
|
|
|
static void HandleObjCMethodFamilyAttr(Decl *decl, const AttributeList &attr,
|
|
Sema &S) {
|
|
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;
|
|
}
|
|
|
|
llvm::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;
|
|
}
|
|
|
|
decl->addAttr(new (S.Context) ObjCMethodFamilyAttr(attr.getLoc(),
|
|
S.Context, family));
|
|
}
|
|
|
|
static void HandleObjCExceptionAttr(Decl *D, const AttributeList &Attr,
|
|
Sema &S) {
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleObjCNSObject(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
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->isPointerType() ||
|
|
!T->getAs<PointerType>()->getPointeeType()->isRecordType()) {
|
|
S.Diag(TD->getLocation(), diag::err_nsobject_attribute);
|
|
return;
|
|
}
|
|
}
|
|
D->addAttr(::new (S.Context) ObjCNSObjectAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void
|
|
HandleOverloadableAttr(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleBlocksAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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.getLoc(), S.Context, type));
|
|
}
|
|
|
|
static void HandleSentinelAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() > 2) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_too_many_arguments) << 2;
|
|
return;
|
|
}
|
|
|
|
int 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;
|
|
}
|
|
sentinel = Idx.getZExtValue();
|
|
|
|
if (sentinel < 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_sentinel_less_than_zero)
|
|
<< E->getSourceRange();
|
|
return;
|
|
}
|
|
}
|
|
|
|
int 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 (nullPos > 1 || nullPos < 0) {
|
|
// 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()->getAs<FunctionType>();
|
|
assert(FT && "FunctionDecl has non-function type?");
|
|
|
|
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 (isa<BlockDecl>(d)) {
|
|
// Note! BlockDecl is typeless. Variadic diagnostics will be issued by the
|
|
// caller.
|
|
;
|
|
} 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.getLoc(), S.Context, sentinel,
|
|
nullPos));
|
|
}
|
|
|
|
static void HandleWarnUnusedResult(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isFunction(D) && !isa<ObjCMethodDecl>(D)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunctionOrMethod;
|
|
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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleWeakAttr(Decl *d, const AttributeList &attr, Sema &S) {
|
|
// 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)) {
|
|
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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleWeakImportAttr(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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.Target.getTriple().isOSDarwin() &&
|
|
isa<ObjCInterfaceDecl>(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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleReqdWorkGroupSize(Decl *D, const AttributeList &Attr,
|
|
Sema &S) {
|
|
// Attribute has 3 arguments.
|
|
if (Attr.getNumArgs() != 3) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
|
|
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)
|
|
<< "reqd_work_group_size" << E->getSourceRange();
|
|
return;
|
|
}
|
|
WGSize[i] = (unsigned) ArgNum.getZExtValue();
|
|
}
|
|
D->addAttr(::new (S.Context) ReqdWorkGroupSizeAttr(Attr.getLoc(), S.Context,
|
|
WGSize[0], WGSize[1],
|
|
WGSize[2]));
|
|
}
|
|
|
|
static void HandleSectionAttr(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
// Attribute has no arguments.
|
|
if (Attr.getNumArgs() != 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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.Target.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;
|
|
}
|
|
|
|
D->addAttr(::new (S.Context) SectionAttr(Attr.getLoc(), S.Context,
|
|
SE->getString()));
|
|
}
|
|
|
|
|
|
static void HandleNothrowAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) NoThrowAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleConstAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.hasParameterOrArguments()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) ConstAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandlePureAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) PureAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleCleanupAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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.getLoc(), S.Context, FD));
|
|
S.MarkDeclarationReferenced(Attr.getParameterLoc(), FD);
|
|
}
|
|
|
|
/// Handle __attribute__((format_arg((idx)))) attribute based on
|
|
/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
|
|
static void HandleFormatArgAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
if (Attr.getNumArgs() != 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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.getLoc(), 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(llvm::StringRef Format) {
|
|
// Check for formats that get handled specially.
|
|
if (Format == "NSString")
|
|
return NSStringFormat;
|
|
if (Format == "CFString")
|
|
return CFStringFormat;
|
|
if (Format == "strftime")
|
|
return StrftimeFormat;
|
|
|
|
// Otherwise, check for supported formats.
|
|
if (Format == "scanf" || Format == "printf" || Format == "printf0" ||
|
|
Format == "strfmon" || Format == "cmn_err" || Format == "strftime" ||
|
|
Format == "NSString" || Format == "CFString" || Format == "vcmn_err" ||
|
|
Format == "zcmn_err" ||
|
|
Format == "kprintf") // OpenBSD.
|
|
return SupportedFormat;
|
|
|
|
if (Format == "gcc_diag" || Format == "gcc_cdiag" ||
|
|
Format == "gcc_cxxdiag" || Format == "gcc_tdiag")
|
|
return IgnoredFormat;
|
|
|
|
return InvalidFormat;
|
|
}
|
|
|
|
/// Handle __attribute__((init_priority(priority))) attributes based on
|
|
/// http://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Attributes.html
|
|
static void HandleInitPriorityAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
if (!S.getLangOptions().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.getLoc(), S.Context,
|
|
prioritynum));
|
|
}
|
|
|
|
/// Handle __attribute__((format(type,idx,firstarg))) attributes based on
|
|
/// http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
|
|
static void HandleFormatAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
|
|
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;
|
|
|
|
llvm::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;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) FormatAttr(Attr.getLoc(), S.Context, Format,
|
|
Idx.getZExtValue(),
|
|
FirstArg.getZExtValue()));
|
|
}
|
|
|
|
static void HandleTransparentUnionAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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->isDefinition()) {
|
|
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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleAnnotateAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 1) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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;
|
|
}
|
|
d->addAttr(::new (S.Context) AnnotateAttr(Attr.getLoc(), S.Context,
|
|
SE->getString()));
|
|
}
|
|
|
|
static void HandleAlignedAttr(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
// 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.getLoc(), S.Context, true, 0));
|
|
return;
|
|
}
|
|
|
|
S.AddAlignedAttr(Attr.getLoc(), D, Attr.getArg(0));
|
|
}
|
|
|
|
void Sema::AddAlignedAttr(SourceLocation AttrLoc, Decl *D, Expr *E) {
|
|
if (E->isTypeDependent() || E->isValueDependent()) {
|
|
// Save dependent expressions in the AST to be instantiated.
|
|
D->addAttr(::new (Context) AlignedAttr(AttrLoc, Context, true, E));
|
|
return;
|
|
}
|
|
|
|
// FIXME: Cache the number on the Attr object?
|
|
llvm::APSInt Alignment(32);
|
|
if (!E->isIntegerConstantExpr(Alignment, Context)) {
|
|
Diag(AttrLoc, diag::err_attribute_argument_not_int)
|
|
<< "aligned" << E->getSourceRange();
|
|
return;
|
|
}
|
|
if (!llvm::isPowerOf2_64(Alignment.getZExtValue())) {
|
|
Diag(AttrLoc, diag::err_attribute_aligned_not_power_of_two)
|
|
<< E->getSourceRange();
|
|
return;
|
|
}
|
|
|
|
D->addAttr(::new (Context) AlignedAttr(AttrLoc, Context, true, E));
|
|
}
|
|
|
|
void Sema::AddAlignedAttr(SourceLocation AttrLoc, Decl *D, TypeSourceInfo *TS) {
|
|
// FIXME: Cache the number on the Attr object if non-dependent?
|
|
// FIXME: Perform checking of type validity
|
|
D->addAttr(::new (Context) AlignedAttr(AttrLoc, Context, false, TS));
|
|
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(Decl *D, const AttributeList &Attr, Sema &S) {
|
|
// 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 (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
IdentifierInfo *Name = Attr.getParameterName();
|
|
if (!Name) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_missing_parameter_name);
|
|
return;
|
|
}
|
|
|
|
llvm::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.Target.getPointerWidth(0);
|
|
else if (Str == "byte")
|
|
DestWidth = S.Context.Target.getCharWidth();
|
|
break;
|
|
case 7:
|
|
if (Str == "pointer")
|
|
DestWidth = S.Context.Target.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" << SourceRange(Attr.getLoc(), Attr.getLoc());
|
|
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.Target.getLongWidth() == 64)
|
|
NewTy = S.Context.LongTy;
|
|
else
|
|
NewTy = S.Context.LongLongTy;
|
|
else
|
|
if (S.Context.Target.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(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() > 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
return;
|
|
}
|
|
|
|
if (!isFunctionOrMethod(d)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) NoDebugAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleNoInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
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) NoInlineAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleNoInstrumentFunctionAttr(Decl *d, const AttributeList &Attr,
|
|
Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
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) NoInstrumentFunctionAttr(Attr.getLoc(),
|
|
S.Context));
|
|
}
|
|
|
|
static void HandleConstantAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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.getLoc(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "constant";
|
|
}
|
|
}
|
|
|
|
static void HandleDeviceAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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.getLoc(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "device";
|
|
}
|
|
}
|
|
|
|
static void HandleGlobalAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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)) {
|
|
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.getLoc(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "global";
|
|
}
|
|
}
|
|
|
|
static void HandleHostAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedFunction;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) CUDAHostAttr(Attr.getLoc(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "host";
|
|
}
|
|
}
|
|
|
|
static void HandleSharedAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
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<VarDecl>(d)) {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type)
|
|
<< Attr.getName() << ExpectedVariable;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) CUDASharedAttr(Attr.getLoc(), S.Context));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "shared";
|
|
}
|
|
}
|
|
|
|
static void HandleGNUInlineAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
// check the attribute arguments.
|
|
if (Attr.getNumArgs() != 0) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 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.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleCallConvAttr(Decl *d, const AttributeList &attr, Sema &S) {
|
|
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.getLoc(), S.Context));
|
|
return;
|
|
case AttributeList::AT_stdcall:
|
|
d->addAttr(::new (S.Context) StdCallAttr(attr.getLoc(), S.Context));
|
|
return;
|
|
case AttributeList::AT_thiscall:
|
|
d->addAttr(::new (S.Context) ThisCallAttr(attr.getLoc(), S.Context));
|
|
return;
|
|
case AttributeList::AT_cdecl:
|
|
d->addAttr(::new (S.Context) CDeclAttr(attr.getLoc(), S.Context));
|
|
return;
|
|
case AttributeList::AT_pascal:
|
|
d->addAttr(::new (S.Context) PascalAttr(attr.getLoc(), S.Context));
|
|
return;
|
|
case AttributeList::AT_pcs: {
|
|
Expr *Arg = attr.getArg(0);
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
if (Str == 0 || Str->isWide()) {
|
|
S.Diag(attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "pcs" << 1;
|
|
attr.setInvalid();
|
|
return;
|
|
}
|
|
|
|
llvm::StringRef StrRef = Str->getString();
|
|
PcsAttr::PCSType PCS;
|
|
if (StrRef == "aapcs")
|
|
PCS = PcsAttr::AAPCS;
|
|
else if (StrRef == "aapcs-vfp")
|
|
PCS = PcsAttr::AAPCS_VFP;
|
|
else {
|
|
S.Diag(attr.getLoc(), diag::err_invalid_pcs);
|
|
attr.setInvalid();
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) PcsAttr(attr.getLoc(), S.Context, PCS));
|
|
}
|
|
default:
|
|
llvm_unreachable("unexpected attribute kind");
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void HandleOpenCLKernelAttr(Decl *d, const AttributeList &Attr, Sema &S){
|
|
assert(Attr.isInvalid() == false);
|
|
d->addAttr(::new (S.Context) OpenCLKernelAttr(Attr.getLoc(), S.Context));
|
|
}
|
|
|
|
bool Sema::CheckCallingConvAttr(const AttributeList &attr, CallingConv &CC) {
|
|
if (attr.isInvalid())
|
|
return true;
|
|
|
|
if ((attr.getNumArgs() != 0 &&
|
|
!(attr.getKind() == AttributeList::AT_pcs && attr.getNumArgs() == 1)) ||
|
|
attr.getParameterName()) {
|
|
Diag(attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 0;
|
|
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 == 0 || Str->isWide()) {
|
|
Diag(attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "pcs" << 1;
|
|
attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
llvm::StringRef StrRef = Str->getString();
|
|
if (StrRef == "aapcs") {
|
|
CC = CC_AAPCS;
|
|
break;
|
|
} else if (StrRef == "aapcs-vfp") {
|
|
CC = CC_AAPCS_VFP;
|
|
break;
|
|
}
|
|
// FALLS THROUGH
|
|
}
|
|
default: llvm_unreachable("unexpected attribute kind"); return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void HandleRegparmAttr(Decl *d, const AttributeList &attr, Sema &S) {
|
|
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.getLoc(), 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.Target.getRegParmMax() == 0) {
|
|
Diag(attr.getLoc(), diag::err_attribute_regparm_wrong_platform)
|
|
<< NumParamsExpr->getSourceRange();
|
|
attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
numParams = NumParams.getZExtValue();
|
|
if (numParams > Context.Target.getRegParmMax()) {
|
|
Diag(attr.getLoc(), diag::err_attribute_regparm_invalid_number)
|
|
<< Context.Target.getRegParmMax() << NumParamsExpr->getSourceRange();
|
|
attr.setInvalid();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void HandleLaunchBoundsAttr(Decl *d, const AttributeList &Attr, Sema &S){
|
|
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.getLoc(), S.Context,
|
|
MaxThreads.getZExtValue(),
|
|
MinBlocks.getZExtValue()));
|
|
} else {
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "launch_bounds";
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Checker-specific attribute handlers.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static bool isValidSubjectOfNSAttribute(Sema &S, QualType type) {
|
|
return type->isObjCObjectPointerType() || S.Context.isObjCNSObjectType(type);
|
|
}
|
|
static bool isValidSubjectOfCFAttribute(Sema &S, QualType type) {
|
|
return type->isPointerType() || isValidSubjectOfNSAttribute(S, type);
|
|
}
|
|
|
|
static void HandleNSConsumedAttr(Decl *d, const AttributeList &attr, Sema &S) {
|
|
ParmVarDecl *param = dyn_cast<ParmVarDecl>(d);
|
|
if (!param) {
|
|
S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type)
|
|
<< SourceRange(attr.getLoc()) << attr.getName() << ExpectedParameter;
|
|
return;
|
|
}
|
|
|
|
bool typeOK, cf;
|
|
if (attr.getKind() == AttributeList::AT_ns_consumed) {
|
|
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)
|
|
<< SourceRange(attr.getLoc()) << attr.getName() << cf;
|
|
return;
|
|
}
|
|
|
|
if (cf)
|
|
param->addAttr(::new (S.Context) CFConsumedAttr(attr.getLoc(), S.Context));
|
|
else
|
|
param->addAttr(::new (S.Context) NSConsumedAttr(attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleNSConsumesSelfAttr(Decl *d, const AttributeList &attr,
|
|
Sema &S) {
|
|
if (!isa<ObjCMethodDecl>(d)) {
|
|
S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type)
|
|
<< SourceRange(attr.getLoc()) << attr.getName() << ExpectedMethod;
|
|
return;
|
|
}
|
|
|
|
d->addAttr(::new (S.Context) NSConsumesSelfAttr(attr.getLoc(), S.Context));
|
|
}
|
|
|
|
static void HandleNSReturnsRetainedAttr(Decl *d, const AttributeList &attr,
|
|
Sema &S) {
|
|
|
|
QualType returnType;
|
|
|
|
if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(d))
|
|
returnType = MD->getResultType();
|
|
else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(d))
|
|
returnType = FD->getResultType();
|
|
else {
|
|
S.Diag(d->getLocStart(), diag::warn_attribute_wrong_decl_type)
|
|
<< SourceRange(attr.getLoc()) << attr.getName()
|
|
<< ExpectedFunctionOrMethod;
|
|
return;
|
|
}
|
|
|
|
bool typeOK;
|
|
bool cf;
|
|
switch (attr.getKind()) {
|
|
default: llvm_unreachable("invalid ownership attribute"); return;
|
|
case AttributeList::AT_ns_returns_autoreleased:
|
|
case AttributeList::AT_ns_returns_retained:
|
|
case AttributeList::AT_ns_returns_not_retained:
|
|
typeOK = isValidSubjectOfNSAttribute(S, returnType);
|
|
cf = false;
|
|
break;
|
|
|
|
case AttributeList::AT_cf_returns_retained:
|
|
case AttributeList::AT_cf_returns_not_retained:
|
|
typeOK = isValidSubjectOfCFAttribute(S, returnType);
|
|
cf = true;
|
|
break;
|
|
}
|
|
|
|
if (!typeOK) {
|
|
S.Diag(d->getLocStart(), diag::warn_ns_attribute_wrong_return_type)
|
|
<< SourceRange(attr.getLoc())
|
|
<< attr.getName() << isa<ObjCMethodDecl>(d) << cf;
|
|
return;
|
|
}
|
|
|
|
switch (attr.getKind()) {
|
|
default:
|
|
assert(0 && "invalid ownership attribute");
|
|
return;
|
|
case AttributeList::AT_ns_returns_autoreleased:
|
|
d->addAttr(::new (S.Context) NSReturnsAutoreleasedAttr(attr.getLoc(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_cf_returns_not_retained:
|
|
d->addAttr(::new (S.Context) CFReturnsNotRetainedAttr(attr.getLoc(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_ns_returns_not_retained:
|
|
d->addAttr(::new (S.Context) NSReturnsNotRetainedAttr(attr.getLoc(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_cf_returns_retained:
|
|
d->addAttr(::new (S.Context) CFReturnsRetainedAttr(attr.getLoc(),
|
|
S.Context));
|
|
return;
|
|
case AttributeList::AT_ns_returns_retained:
|
|
d->addAttr(::new (S.Context) NSReturnsRetainedAttr(attr.getLoc(),
|
|
S.Context));
|
|
return;
|
|
};
|
|
}
|
|
|
|
static bool isKnownDeclSpecAttr(const AttributeList &Attr) {
|
|
return Attr.getKind() == AttributeList::AT_dllimport ||
|
|
Attr.getKind() == AttributeList::AT_dllexport ||
|
|
Attr.getKind() == AttributeList::AT_uuid;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Microsoft specific attribute handlers.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static void HandleUuidAttr(Decl *d, const AttributeList &Attr, Sema &S) {
|
|
if (S.LangOpts.Microsoft || S.LangOpts.Borland) {
|
|
// 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);
|
|
StringLiteral *Str = dyn_cast<StringLiteral>(Arg);
|
|
if (Str == 0 || Str->isWide()) {
|
|
S.Diag(Attr.getLoc(), diag::err_attribute_argument_n_not_string)
|
|
<< "uuid" << 1;
|
|
return;
|
|
}
|
|
|
|
llvm::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}"
|
|
llvm::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.getLoc(), S.Context,
|
|
Str->getString()));
|
|
} else
|
|
S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "uuid";
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Top Level Sema Entry Points
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static void ProcessNonInheritableDeclAttr(Scope *scope, Decl *D,
|
|
const AttributeList &Attr, Sema &S) {
|
|
switch (Attr.getKind()) {
|
|
case AttributeList::AT_device: HandleDeviceAttr (D, Attr, S); break;
|
|
case AttributeList::AT_host: HandleHostAttr (D, Attr, S); break;
|
|
case AttributeList::AT_overloadable:HandleOverloadableAttr(D, Attr, S); break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void ProcessInheritableDeclAttr(Scope *scope, Decl *D,
|
|
const AttributeList &Attr, Sema &S) {
|
|
switch (Attr.getKind()) {
|
|
case AttributeList::AT_IBAction: HandleIBAction(D, Attr, S); break;
|
|
case AttributeList::AT_IBOutlet: HandleIBOutlet(D, Attr, S); break;
|
|
case AttributeList::AT_IBOutletCollection:
|
|
HandleIBOutletCollection(D, Attr, S); break;
|
|
case AttributeList::AT_address_space:
|
|
case AttributeList::AT_opencl_image_access:
|
|
case AttributeList::AT_objc_gc:
|
|
case AttributeList::AT_vector_size:
|
|
case AttributeList::AT_neon_vector_type:
|
|
case AttributeList::AT_neon_polyvector_type:
|
|
// Ignore these, these are type attributes, handled by
|
|
// ProcessTypeAttributes.
|
|
break;
|
|
case AttributeList::AT_device:
|
|
case AttributeList::AT_host:
|
|
case AttributeList::AT_overloadable:
|
|
// Ignore, this is a non-inheritable attribute, handled
|
|
// by ProcessNonInheritableDeclAttr.
|
|
break;
|
|
case AttributeList::AT_alias: HandleAliasAttr (D, Attr, S); break;
|
|
case AttributeList::AT_aligned: HandleAlignedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_always_inline:
|
|
HandleAlwaysInlineAttr (D, Attr, S); break;
|
|
case AttributeList::AT_analyzer_noreturn:
|
|
HandleAnalyzerNoReturnAttr (D, Attr, S); break;
|
|
case AttributeList::AT_annotate: HandleAnnotateAttr (D, Attr, S); break;
|
|
case AttributeList::AT_availability:HandleAvailabilityAttr(D, Attr, S); break;
|
|
case AttributeList::AT_carries_dependency:
|
|
HandleDependencyAttr (D, Attr, S); break;
|
|
case AttributeList::AT_common: HandleCommonAttr (D, Attr, S); break;
|
|
case AttributeList::AT_constant: HandleConstantAttr (D, Attr, S); break;
|
|
case AttributeList::AT_constructor: HandleConstructorAttr (D, Attr, S); break;
|
|
case AttributeList::AT_deprecated: HandleDeprecatedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_destructor: HandleDestructorAttr (D, Attr, S); break;
|
|
case AttributeList::AT_ext_vector_type:
|
|
HandleExtVectorTypeAttr(scope, D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_format: HandleFormatAttr (D, Attr, S); break;
|
|
case AttributeList::AT_format_arg: HandleFormatArgAttr (D, Attr, S); break;
|
|
case AttributeList::AT_global: HandleGlobalAttr (D, Attr, S); break;
|
|
case AttributeList::AT_gnu_inline: HandleGNUInlineAttr (D, Attr, S); break;
|
|
case AttributeList::AT_launch_bounds:
|
|
HandleLaunchBoundsAttr(D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_mode: HandleModeAttr (D, Attr, S); break;
|
|
case AttributeList::AT_malloc: HandleMallocAttr (D, Attr, S); break;
|
|
case AttributeList::AT_may_alias: HandleMayAliasAttr (D, Attr, S); break;
|
|
case AttributeList::AT_nocommon: HandleNoCommonAttr (D, Attr, S); break;
|
|
case AttributeList::AT_nonnull: HandleNonNullAttr (D, Attr, S); break;
|
|
case AttributeList::AT_ownership_returns:
|
|
case AttributeList::AT_ownership_takes:
|
|
case AttributeList::AT_ownership_holds:
|
|
HandleOwnershipAttr (D, Attr, S); break;
|
|
case AttributeList::AT_naked: HandleNakedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_noreturn: HandleNoReturnAttr (D, Attr, S); break;
|
|
case AttributeList::AT_nothrow: HandleNothrowAttr (D, Attr, S); break;
|
|
case AttributeList::AT_shared: HandleSharedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_vecreturn: HandleVecReturnAttr (D, Attr, S); break;
|
|
|
|
// Checker-specific.
|
|
case AttributeList::AT_cf_consumed:
|
|
case AttributeList::AT_ns_consumed: HandleNSConsumedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_ns_consumes_self:
|
|
HandleNSConsumesSelfAttr(D, Attr, S); break;
|
|
|
|
case AttributeList::AT_ns_returns_autoreleased:
|
|
case AttributeList::AT_ns_returns_not_retained:
|
|
case AttributeList::AT_cf_returns_not_retained:
|
|
case AttributeList::AT_ns_returns_retained:
|
|
case AttributeList::AT_cf_returns_retained:
|
|
HandleNSReturnsRetainedAttr(D, Attr, S); break;
|
|
|
|
case AttributeList::AT_reqd_wg_size:
|
|
HandleReqdWorkGroupSize(D, Attr, S); break;
|
|
|
|
case AttributeList::AT_init_priority:
|
|
HandleInitPriorityAttr(D, Attr, S); break;
|
|
|
|
case AttributeList::AT_packed: HandlePackedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_section: HandleSectionAttr (D, Attr, S); break;
|
|
case AttributeList::AT_unavailable: HandleUnavailableAttr (D, Attr, S); break;
|
|
case AttributeList::AT_unused: HandleUnusedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_used: HandleUsedAttr (D, Attr, S); break;
|
|
case AttributeList::AT_visibility: HandleVisibilityAttr (D, Attr, S); break;
|
|
case AttributeList::AT_warn_unused_result: HandleWarnUnusedResult(D,Attr,S);
|
|
break;
|
|
case AttributeList::AT_weak: HandleWeakAttr (D, Attr, S); break;
|
|
case AttributeList::AT_weakref: HandleWeakRefAttr (D, Attr, S); break;
|
|
case AttributeList::AT_weak_import: HandleWeakImportAttr (D, Attr, S); break;
|
|
case AttributeList::AT_transparent_union:
|
|
HandleTransparentUnionAttr(D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_objc_exception:
|
|
HandleObjCExceptionAttr(D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_objc_method_family:
|
|
HandleObjCMethodFamilyAttr(D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_nsobject: HandleObjCNSObject (D, Attr, S); break;
|
|
case AttributeList::AT_blocks: HandleBlocksAttr (D, Attr, S); break;
|
|
case AttributeList::AT_sentinel: HandleSentinelAttr (D, Attr, S); break;
|
|
case AttributeList::AT_const: HandleConstAttr (D, Attr, S); break;
|
|
case AttributeList::AT_pure: HandlePureAttr (D, Attr, S); break;
|
|
case AttributeList::AT_cleanup: HandleCleanupAttr (D, Attr, S); break;
|
|
case AttributeList::AT_nodebug: HandleNoDebugAttr (D, Attr, S); break;
|
|
case AttributeList::AT_noinline: HandleNoInlineAttr (D, Attr, S); break;
|
|
case AttributeList::AT_regparm: HandleRegparmAttr (D, Attr, S); break;
|
|
case AttributeList::IgnoredAttribute:
|
|
// Just ignore
|
|
break;
|
|
case AttributeList::AT_no_instrument_function: // Interacts with -pg.
|
|
HandleNoInstrumentFunctionAttr(D, Attr, S);
|
|
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:
|
|
HandleCallConvAttr(D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_opencl_kernel_function:
|
|
HandleOpenCLKernelAttr(D, Attr, S);
|
|
break;
|
|
case AttributeList::AT_uuid:
|
|
HandleUuidAttr(D, Attr, S);
|
|
break;
|
|
default:
|
|
// Ask target about the attribute.
|
|
const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema();
|
|
if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S))
|
|
S.Diag(Attr.getLoc(), 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(Scope *scope, Decl *D,
|
|
const AttributeList &Attr, Sema &S,
|
|
bool NonInheritable, bool Inheritable) {
|
|
if (Attr.isInvalid())
|
|
return;
|
|
|
|
if (Attr.isDeclspecAttribute() && !isKnownDeclSpecAttr(Attr))
|
|
// FIXME: Try to deal with other __declspec attributes!
|
|
return;
|
|
|
|
if (NonInheritable)
|
|
ProcessNonInheritableDeclAttr(scope, D, Attr, S);
|
|
|
|
if (Inheritable)
|
|
ProcessInheritableDeclAttr(scope, D, Attr, S);
|
|
}
|
|
|
|
/// 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(S, D, *l, *this, 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;
|
|
}
|
|
}
|
|
|
|
/// 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) {
|
|
assert(isa<FunctionDecl>(ND) || isa<VarDecl>(ND));
|
|
NamedDecl *NewD = 0;
|
|
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
|
|
NewD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(),
|
|
FD->getInnerLocStart(),
|
|
FD->getLocation(), DeclarationName(II),
|
|
FD->getType(), FD->getTypeSourceInfo());
|
|
if (FD->getQualifier()) {
|
|
FunctionDecl *NewFD = cast<FunctionDecl>(NewD);
|
|
NewFD->setQualifierInfo(FD->getQualifierLoc());
|
|
}
|
|
} 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());
|
|
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 && !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);
|
|
}
|
|
|
|
// This duplicates a vector push_back but hides the need to know the
|
|
// size of the type.
|
|
void Sema::DelayedDiagnostics::add(const DelayedDiagnostic &diag) {
|
|
assert(StackSize <= StackCapacity);
|
|
|
|
// Grow the stack if necessary.
|
|
if (StackSize == StackCapacity) {
|
|
unsigned newCapacity = 2 * StackCapacity + 2;
|
|
char *newBuffer = new char[newCapacity * sizeof(DelayedDiagnostic)];
|
|
const char *oldBuffer = (const char*) Stack;
|
|
|
|
if (StackCapacity)
|
|
memcpy(newBuffer, oldBuffer, StackCapacity * sizeof(DelayedDiagnostic));
|
|
|
|
delete[] oldBuffer;
|
|
Stack = reinterpret_cast<sema::DelayedDiagnostic*>(newBuffer);
|
|
StackCapacity = newCapacity;
|
|
}
|
|
|
|
assert(StackSize < StackCapacity);
|
|
new (&Stack[StackSize++]) DelayedDiagnostic(diag);
|
|
}
|
|
|
|
void Sema::DelayedDiagnostics::popParsingDecl(Sema &S, ParsingDeclState state,
|
|
Decl *decl) {
|
|
DelayedDiagnostics &DD = S.DelayedDiagnostics;
|
|
|
|
// Check the invariants.
|
|
assert(DD.StackSize >= state.SavedStackSize);
|
|
assert(state.SavedStackSize >= DD.ActiveStackBase);
|
|
assert(DD.ParsingDepth > 0);
|
|
|
|
// Drop the parsing depth.
|
|
DD.ParsingDepth--;
|
|
|
|
// If there are no active diagnostics, we're done.
|
|
if (DD.StackSize == DD.ActiveStackBase)
|
|
return;
|
|
|
|
// We only want to actually emit delayed diagnostics when we
|
|
// successfully parsed a decl.
|
|
if (decl) {
|
|
// We emit all the active diagnostics, not just those starting
|
|
// from the saved state. The idea is this: we get one push for a
|
|
// decl spec and another 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.
|
|
for (unsigned i = DD.ActiveStackBase, e = DD.StackSize; i != e; ++i) {
|
|
DelayedDiagnostic &diag = DD.Stack[i];
|
|
if (diag.Triggered)
|
|
continue;
|
|
|
|
switch (diag.Kind) {
|
|
case DelayedDiagnostic::Deprecation:
|
|
S.HandleDelayedDeprecationCheck(diag, decl);
|
|
break;
|
|
|
|
case DelayedDiagnostic::Access:
|
|
S.HandleDelayedAccessCheck(diag, decl);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Destroy all the delayed diagnostics we're about to pop off.
|
|
for (unsigned i = state.SavedStackSize, e = DD.StackSize; i != e; ++i)
|
|
DD.Stack[i].Destroy();
|
|
|
|
DD.StackSize = state.SavedStackSize;
|
|
}
|
|
|
|
static bool isDeclDeprecated(Decl *D) {
|
|
do {
|
|
if (D->isDeprecated())
|
|
return true;
|
|
} while ((D = cast_or_null<Decl>(D->getDeclContext())));
|
|
return false;
|
|
}
|
|
|
|
void Sema::HandleDelayedDeprecationCheck(DelayedDiagnostic &DD,
|
|
Decl *Ctx) {
|
|
if (isDeclDeprecated(Ctx))
|
|
return;
|
|
|
|
DD.Triggered = true;
|
|
if (!DD.getDeprecationMessage().empty())
|
|
Diag(DD.Loc, diag::warn_deprecated_message)
|
|
<< DD.getDeprecationDecl()->getDeclName()
|
|
<< DD.getDeprecationMessage();
|
|
else
|
|
Diag(DD.Loc, diag::warn_deprecated)
|
|
<< DD.getDeprecationDecl()->getDeclName();
|
|
}
|
|
|
|
void Sema::EmitDeprecationWarning(NamedDecl *D, llvm::StringRef Message,
|
|
SourceLocation Loc,
|
|
const ObjCInterfaceDecl *UnknownObjCClass) {
|
|
// Delay if we're currently parsing a declaration.
|
|
if (DelayedDiagnostics.shouldDelayDiagnostics()) {
|
|
DelayedDiagnostics.add(DelayedDiagnostic::makeDeprecation(Loc, D, Message));
|
|
return;
|
|
}
|
|
|
|
// Otherwise, don't warn if our current context is deprecated.
|
|
if (isDeclDeprecated(cast<Decl>(CurContext)))
|
|
return;
|
|
if (!Message.empty())
|
|
Diag(Loc, diag::warn_deprecated_message) << D->getDeclName()
|
|
<< Message;
|
|
else {
|
|
if (!UnknownObjCClass)
|
|
Diag(Loc, diag::warn_deprecated) << D->getDeclName();
|
|
else {
|
|
Diag(Loc, diag::warn_deprecated_fwdclass_message) << D->getDeclName();
|
|
Diag(UnknownObjCClass->getLocation(), diag::note_forward_class);
|
|
}
|
|
}
|
|
}
|