diff options
Diffstat (limited to 'clang/lib/Sema')
-rw-r--r-- | clang/lib/Sema/SemaOverload.cpp | 2 | ||||
-rw-r--r-- | clang/lib/Sema/SemaTemplate.cpp | 72 |
2 files changed, 70 insertions, 4 deletions
diff --git a/clang/lib/Sema/SemaOverload.cpp b/clang/lib/Sema/SemaOverload.cpp index c91b507dc83..64c61e17ad1 100644 --- a/clang/lib/Sema/SemaOverload.cpp +++ b/clang/lib/Sema/SemaOverload.cpp @@ -3953,7 +3953,7 @@ void Sema::FixOverloadedFunctionReference(Expr *E, FunctionDecl *Fn) { assert(UnOp->getOpcode() == UnaryOperator::AddrOf && "Can only take the address of an overloaded function"); FixOverloadedFunctionReference(UnOp->getSubExpr(), Fn); - E->setType(Context.getPointerType(E->getType())); + E->setType(Context.getPointerType(UnOp->getSubExpr()->getType())); } else if (DeclRefExpr *DR = dyn_cast<DeclRefExpr>(E)) { assert(isa<OverloadedFunctionDecl>(DR->getDecl()) && "Expected overloaded function"); diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp index 7aab4a585e0..c78d8876dae 100644 --- a/clang/lib/Sema/SemaTemplate.cpp +++ b/clang/lib/Sema/SemaTemplate.cpp @@ -192,7 +192,9 @@ Sema::DeclTy *Sema::ActOnNonTypeTemplateParameter(Scope *S, Declarator &D, // -- integral or enumeration type, if (T->isIntegralType() || T->isEnumeralType() || // -- pointer to object or pointer to function, - T->isPointerType() || + (T->isPointerType() && + (T->getAsPointerType()->getPointeeType()->isObjectType() || + T->getAsPointerType()->getPointeeType()->isFunctionType())) || // -- reference to object or reference to function, T->isReferenceType() || // -- pointer to member. @@ -844,9 +846,8 @@ bool Sema::CheckTemplateArgument(NonTypeTemplateParmDecl *Param, // enumeration type, integral promotions (4.5) and integral // conversions (4.7) are applied. QualType ParamType = Param->getType(); + QualType ArgType = Arg->getType(); if (ParamType->isIntegralType() || ParamType->isEnumeralType()) { - QualType ArgType = Arg->getType(); - // C++ [temp.arg.nontype]p1: // A template-argument for a non-type, non-template // template-parameter shall be one of: @@ -894,6 +895,71 @@ bool Sema::CheckTemplateArgument(NonTypeTemplateParmDecl *Param, return false; } + + if (const PointerType *ParamPtrType = ParamType->getAsPointerType()) { + // -- for a non-type template-parameter of type pointer to + // object, qualification conversions (4.4) and the + // array-to-pointer conversion (4.2) are applied. + if (ParamPtrType->getPointeeType()->isObjectType()) { + if (ArgType->isArrayType()) { + ArgType = Context.getArrayDecayedType(ArgType); + ImpCastExprToType(Arg, ArgType); + } + + if (IsQualificationConversion(ArgType, ParamType)) { + ArgType = ParamType; + ImpCastExprToType(Arg, ParamType); + } + + if (!hasSameUnqualifiedType(ArgType, ParamType)) { + // We can't perform this conversion. + Diag(Arg->getSourceRange().getBegin(), + diag::err_template_arg_not_convertible) + << Arg->getType() << Param->getType() << Arg->getSourceRange(); + Diag(Param->getLocation(), diag::note_template_param_here); + return true; + } + + // FIXME: Check the restrictions in p1! + return false; + } + + assert(ParamPtrType->getPointeeType()->isFunctionType() && + "Only function pointers remain"); + // -- For a non-type template-parameter of type pointer to + // function, only the function-to-pointer conversion (4.3) is + // applied. If the template-argument represents a set of + // overloaded functions (or a pointer to such), the matching + // function is selected from the set (13.4). + if (hasSameUnqualifiedType(ArgType, ParamType)) { + // We don't have to do anything: the types already match. + } + else if (ArgType->isFunctionType()) { + ArgType = Context.getPointerType(ArgType); + ImpCastExprToType(Arg, ArgType); + } else if (FunctionDecl *Fn + = ResolveAddressOfOverloadedFunction(Arg, ParamType, true)) { + FixOverloadedFunctionReference(Arg, Fn); + ArgType = Arg->getType(); + if (ArgType->isFunctionType()) { + ArgType = Context.getPointerType(Arg->getType()); + ImpCastExprToType(Arg, ArgType); + } + } + + if (!hasSameUnqualifiedType(ArgType, ParamType)) { + // We can't perform this conversion. + Diag(Arg->getSourceRange().getBegin(), + diag::err_template_arg_not_convertible) + << Arg->getType() << Param->getType() << Arg->getSourceRange(); + Diag(Param->getLocation(), diag::note_template_param_here); + return true; + } + + // FIXME: Check the restrictions in p1! + return false; + } + // FIXME: p5 has a lot more checks to perform! return false; |