r217995 - Instantiate exception specifications when instantiating function types (other
Richard Smith
richard-llvm at metafoo.co.uk
Wed Sep 17 16:57:06 PDT 2014
Author: rsmith
Date: Wed Sep 17 18:57:05 2014
New Revision: 217995
URL: http://llvm.org/viewvc/llvm-project?rev=217995&view=rev
Log:
Instantiate exception specifications when instantiating function types (other
than the type of a function declaration). We previously didn't instantiate
these at all! This also covers the pathological case where the only mention of
a parameter pack is within the exception specification; this gives us a second
way (other than alias templates) to reach the horrible state where a type
contains an unexpanded pack, but its canonical type does not.
Modified:
cfe/trunk/include/clang/AST/DataRecursiveASTVisitor.h
cfe/trunk/include/clang/AST/Expr.h
cfe/trunk/include/clang/AST/RecursiveASTVisitor.h
cfe/trunk/include/clang/AST/Type.h
cfe/trunk/include/clang/Sema/Sema.h
cfe/trunk/lib/AST/Type.cpp
cfe/trunk/lib/Sema/SemaDeclCXX.cpp
cfe/trunk/lib/Sema/SemaExceptionSpec.cpp
cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp
cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp
cfe/trunk/lib/Sema/SemaType.cpp
cfe/trunk/lib/Sema/TreeTransform.h
cfe/trunk/test/CXX/except/except.spec/p1.cpp
cfe/trunk/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp
cfe/trunk/test/SemaTemplate/instantiate-exception-spec.cpp
Modified: cfe/trunk/include/clang/AST/DataRecursiveASTVisitor.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DataRecursiveASTVisitor.h?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/DataRecursiveASTVisitor.h (original)
+++ cfe/trunk/include/clang/AST/DataRecursiveASTVisitor.h Wed Sep 17 18:57:05 2014
@@ -876,6 +876,9 @@ DEF_TRAVERSE_TYPE(FunctionProtoType, {
for (const auto &E : T->exceptions()) {
TRY_TO(TraverseType(E));
}
+
+ if (Expr *NE = T->getNoexceptExpr())
+ TRY_TO(TraverseStmt(NE));
})
DEF_TRAVERSE_TYPE(UnresolvedUsingType, {})
@@ -1084,6 +1087,9 @@ DEF_TRAVERSE_TYPELOC(FunctionProtoType,
for (const auto &E : T->exceptions()) {
TRY_TO(TraverseType(E));
}
+
+ if (Expr *NE = T->getNoexceptExpr())
+ TRY_TO(TraverseStmt(NE));
})
DEF_TRAVERSE_TYPELOC(UnresolvedUsingType, {})
@@ -2123,21 +2129,28 @@ bool RecursiveASTVisitor<Derived>::Trave
TRY_TO(TraverseLambdaCapture(S, C));
}
- if (S->hasExplicitParameters() || S->hasExplicitResultType()) {
- TypeLoc TL = S->getCallOperator()->getTypeSourceInfo()->getTypeLoc();
- if (S->hasExplicitParameters() && S->hasExplicitResultType()) {
- // Visit the whole type.
- TRY_TO(TraverseTypeLoc(TL));
- } else if (FunctionProtoTypeLoc Proto = TL.getAs<FunctionProtoTypeLoc>()) {
- if (S->hasExplicitParameters()) {
- // Visit parameters.
- for (unsigned I = 0, N = Proto.getNumParams(); I != N; ++I) {
- TRY_TO(TraverseDecl(Proto.getParam(I)));
- }
- } else {
- TRY_TO(TraverseTypeLoc(Proto.getReturnLoc()));
+ TypeLoc TL = S->getCallOperator()->getTypeSourceInfo()->getTypeLoc();
+ FunctionProtoTypeLoc Proto = TL.castAs<FunctionProtoTypeLoc>();
+
+ if (S->hasExplicitParameters() && S->hasExplicitResultType()) {
+ // Visit the whole type.
+ TRY_TO(TraverseTypeLoc(TL));
+ } else {
+ if (S->hasExplicitParameters()) {
+ // Visit parameters.
+ for (unsigned I = 0, N = Proto.getNumParams(); I != N; ++I) {
+ TRY_TO(TraverseDecl(Proto.getParam(I)));
}
+ } else if (S->hasExplicitResultType()) {
+ TRY_TO(TraverseTypeLoc(Proto.getReturnLoc()));
}
+
+ auto *T = Proto.getTypePtr();
+ for (const auto &E : T->exceptions())
+ TRY_TO(TraverseType(E));
+
+ if (Expr *NE = T->getNoexceptExpr())
+ TRY_TO(TraverseStmt(NE));
}
TRY_TO(TraverseLambdaBody(S));
Modified: cfe/trunk/include/clang/AST/Expr.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Expr.h?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/Expr.h (original)
+++ cfe/trunk/include/clang/AST/Expr.h Wed Sep 17 18:57:05 2014
@@ -2673,20 +2673,23 @@ private:
}
protected:
- CastExpr(StmtClass SC, QualType ty, ExprValueKind VK,
- const CastKind kind, Expr *op, unsigned BasePathSize) :
- Expr(SC, ty, VK, OK_Ordinary,
- // Cast expressions are type-dependent if the type is
- // dependent (C++ [temp.dep.expr]p3).
- ty->isDependentType(),
- // Cast expressions are value-dependent if the type is
- // dependent or if the subexpression is value-dependent.
- ty->isDependentType() || (op && op->isValueDependent()),
- (ty->isInstantiationDependentType() ||
- (op && op->isInstantiationDependent())),
- (ty->containsUnexpandedParameterPack() ||
- (op && op->containsUnexpandedParameterPack()))),
- Op(op) {
+ CastExpr(StmtClass SC, QualType ty, ExprValueKind VK, const CastKind kind,
+ Expr *op, unsigned BasePathSize)
+ : Expr(SC, ty, VK, OK_Ordinary,
+ // Cast expressions are type-dependent if the type is
+ // dependent (C++ [temp.dep.expr]p3).
+ ty->isDependentType(),
+ // Cast expressions are value-dependent if the type is
+ // dependent or if the subexpression is value-dependent.
+ ty->isDependentType() || (op && op->isValueDependent()),
+ (ty->isInstantiationDependentType() ||
+ (op && op->isInstantiationDependent())),
+ // An implicit cast expression doesn't (lexically) contain an
+ // unexpanded pack, even if its target type does.
+ ((SC != ImplicitCastExprClass &&
+ ty->containsUnexpandedParameterPack()) ||
+ (op && op->containsUnexpandedParameterPack()))),
+ Op(op) {
assert(kind != CK_Invalid && "creating cast with invalid cast kind");
CastExprBits.Kind = kind;
setBasePathSize(BasePathSize);
Modified: cfe/trunk/include/clang/AST/RecursiveASTVisitor.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/RecursiveASTVisitor.h?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/RecursiveASTVisitor.h (original)
+++ cfe/trunk/include/clang/AST/RecursiveASTVisitor.h Wed Sep 17 18:57:05 2014
@@ -941,6 +941,9 @@ DEF_TRAVERSE_TYPE(FunctionProtoType, {
for (const auto &E : T->exceptions()) {
TRY_TO(TraverseType(E));
}
+
+ if (Expr *NE = T->getNoexceptExpr())
+ TRY_TO(TraverseStmt(NE));
})
DEF_TRAVERSE_TYPE(UnresolvedUsingType, {})
@@ -1149,6 +1152,9 @@ DEF_TRAVERSE_TYPELOC(FunctionProtoType,
for (const auto &E : T->exceptions()) {
TRY_TO(TraverseType(E));
}
+
+ if (Expr *NE = T->getNoexceptExpr())
+ TRY_TO(TraverseStmt(NE));
})
DEF_TRAVERSE_TYPELOC(UnresolvedUsingType, {})
@@ -2145,21 +2151,28 @@ bool RecursiveASTVisitor<Derived>::Trave
TRY_TO(TraverseLambdaCapture(S, C));
}
- if (S->hasExplicitParameters() || S->hasExplicitResultType()) {
- TypeLoc TL = S->getCallOperator()->getTypeSourceInfo()->getTypeLoc();
- if (S->hasExplicitParameters() && S->hasExplicitResultType()) {
- // Visit the whole type.
- TRY_TO(TraverseTypeLoc(TL));
- } else if (FunctionProtoTypeLoc Proto = TL.getAs<FunctionProtoTypeLoc>()) {
- if (S->hasExplicitParameters()) {
- // Visit parameters.
- for (unsigned I = 0, N = Proto.getNumParams(); I != N; ++I) {
- TRY_TO(TraverseDecl(Proto.getParam(I)));
- }
- } else {
- TRY_TO(TraverseTypeLoc(Proto.getReturnLoc()));
+ TypeLoc TL = S->getCallOperator()->getTypeSourceInfo()->getTypeLoc();
+ FunctionProtoTypeLoc Proto = TL.castAs<FunctionProtoTypeLoc>();
+
+ if (S->hasExplicitParameters() && S->hasExplicitResultType()) {
+ // Visit the whole type.
+ TRY_TO(TraverseTypeLoc(TL));
+ } else {
+ if (S->hasExplicitParameters()) {
+ // Visit parameters.
+ for (unsigned I = 0, N = Proto.getNumParams(); I != N; ++I) {
+ TRY_TO(TraverseDecl(Proto.getParam(I)));
}
+ } else if (S->hasExplicitResultType()) {
+ TRY_TO(TraverseTypeLoc(Proto.getReturnLoc()));
}
+
+ auto *T = Proto.getTypePtr();
+ for (const auto &E : T->exceptions())
+ TRY_TO(TraverseType(E));
+
+ if (Expr *NE = T->getNoexceptExpr())
+ TRY_TO(TraverseStmt(NE));
}
TRY_TO(TraverseLambdaBody(S));
Modified: cfe/trunk/include/clang/AST/Type.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Type.h?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/Type.h (original)
+++ cfe/trunk/include/clang/AST/Type.h Wed Sep 17 18:57:05 2014
@@ -3012,6 +3012,8 @@ public:
bool hasNoexceptExceptionSpec() const {
return isNoexceptExceptionSpec(getExceptionSpecType());
}
+ /// \brief Return whether this function has a dependent exception spec.
+ bool hasDependentExceptionSpec() const;
/// \brief Result type of getNoexceptSpec().
enum NoexceptResult {
NR_NoNoexcept, ///< There is no noexcept specifier.
@@ -5247,8 +5249,8 @@ template <typename T> const T *Type::cas
ArrayType_cannot_be_used_with_getAs<T> at;
(void) at;
- assert(isa<T>(CanonicalType));
if (const T *ty = dyn_cast<T>(this)) return ty;
+ assert(isa<T>(CanonicalType));
return cast<T>(getUnqualifiedDesugaredType());
}
Modified: cfe/trunk/include/clang/Sema/Sema.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Sema/Sema.h?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/include/clang/Sema/Sema.h (original)
+++ cfe/trunk/include/clang/Sema/Sema.h Wed Sep 17 18:57:05 2014
@@ -4025,7 +4025,8 @@ public:
/// \brief Check the given exception-specification and update the
/// exception specification information with the results.
- void checkExceptionSpecification(ExceptionSpecificationType EST,
+ void checkExceptionSpecification(bool IsTopLevel,
+ ExceptionSpecificationType EST,
ArrayRef<ParsedType> DynamicExceptions,
ArrayRef<SourceRange> DynamicExceptionRanges,
Expr *NoexceptExpr,
@@ -6652,6 +6653,8 @@ public:
DeclarationName Entity,
CXXRecordDecl *ThisContext,
unsigned ThisTypeQuals);
+ void SubstExceptionSpec(FunctionDecl *New, const FunctionProtoType *Proto,
+ const MultiLevelTemplateArgumentList &Args);
ParmVarDecl *SubstParmVarDecl(ParmVarDecl *D,
const MultiLevelTemplateArgumentList &TemplateArgs,
int indexAdjustment,
Modified: cfe/trunk/lib/AST/Type.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/Type.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/AST/Type.cpp (original)
+++ cfe/trunk/lib/AST/Type.cpp Wed Sep 17 18:57:05 2014
@@ -1623,9 +1623,9 @@ FunctionProtoType::FunctionProtoType(Qua
QualType *exnSlot = argSlot + NumParams;
unsigned I = 0;
for (QualType ExceptionType : epi.ExceptionSpec.Exceptions) {
- if (ExceptionType->isDependentType())
- setDependent();
- else if (ExceptionType->isInstantiationDependentType())
+ // Note that a dependent exception specification does *not* make
+ // a type dependent; it's not even part of the C++ type system.
+ if (ExceptionType->isInstantiationDependentType())
setInstantiationDependent();
if (ExceptionType->containsUnexpandedParameterPack())
@@ -1639,11 +1639,12 @@ FunctionProtoType::FunctionProtoType(Qua
*noexSlot = epi.ExceptionSpec.NoexceptExpr;
if (epi.ExceptionSpec.NoexceptExpr) {
- if (epi.ExceptionSpec.NoexceptExpr->isValueDependent()
- || epi.ExceptionSpec.NoexceptExpr->isTypeDependent())
- setDependent();
- else if (epi.ExceptionSpec.NoexceptExpr->isInstantiationDependent())
+ if (epi.ExceptionSpec.NoexceptExpr->isValueDependent() ||
+ epi.ExceptionSpec.NoexceptExpr->isInstantiationDependent())
setInstantiationDependent();
+
+ if (epi.ExceptionSpec.NoexceptExpr->containsUnexpandedParameterPack())
+ setContainsUnexpandedParameterPack();
}
} else if (getExceptionSpecType() == EST_Uninstantiated) {
// Store the function decl from which we will resolve our
@@ -1669,6 +1670,19 @@ FunctionProtoType::FunctionProtoType(Qua
}
}
+bool FunctionProtoType::hasDependentExceptionSpec() const {
+ if (Expr *NE = getNoexceptExpr())
+ return NE->isValueDependent();
+ for (unsigned I = 0, N = getNumExceptions(); I != N; ++I)
+ // A pack expansion with a non-dependent pattern is still dependent,
+ // because we don't know whether the pattern is in the exception spec
+ // or not (that depends on whether the pack has 0 expansions).
+ if (getExceptionType(I)->isDependentType() ||
+ getExceptionType(I)->getAs<PackExpansionType>())
+ return true;
+ return false;
+}
+
FunctionProtoType::NoexceptResult
FunctionProtoType::getNoexceptSpec(const ASTContext &ctx) const {
ExceptionSpecificationType est = getExceptionSpecType();
Modified: cfe/trunk/lib/Sema/SemaDeclCXX.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclCXX.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDeclCXX.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDeclCXX.cpp Wed Sep 17 18:57:05 2014
@@ -13051,13 +13051,12 @@ bool Sema::checkThisInStaticMemberFuncti
return false;
}
-void
-Sema::checkExceptionSpecification(ExceptionSpecificationType EST,
- ArrayRef<ParsedType> DynamicExceptions,
- ArrayRef<SourceRange> DynamicExceptionRanges,
- Expr *NoexceptExpr,
- SmallVectorImpl<QualType> &Exceptions,
- FunctionProtoType::ExceptionSpecInfo &ESI) {
+void Sema::checkExceptionSpecification(
+ bool IsTopLevel, ExceptionSpecificationType EST,
+ ArrayRef<ParsedType> DynamicExceptions,
+ ArrayRef<SourceRange> DynamicExceptionRanges, Expr *NoexceptExpr,
+ SmallVectorImpl<QualType> &Exceptions,
+ FunctionProtoType::ExceptionSpecInfo &ESI) {
Exceptions.clear();
ESI.Type = EST;
if (EST == EST_Dynamic) {
@@ -13066,13 +13065,15 @@ Sema::checkExceptionSpecification(Except
// FIXME: Preserve type source info.
QualType ET = GetTypeFromParser(DynamicExceptions[ei]);
- SmallVector<UnexpandedParameterPack, 2> Unexpanded;
- collectUnexpandedParameterPacks(ET, Unexpanded);
- if (!Unexpanded.empty()) {
- DiagnoseUnexpandedParameterPacks(DynamicExceptionRanges[ei].getBegin(),
- UPPC_ExceptionType,
- Unexpanded);
- continue;
+ if (IsTopLevel) {
+ SmallVector<UnexpandedParameterPack, 2> Unexpanded;
+ collectUnexpandedParameterPacks(ET, Unexpanded);
+ if (!Unexpanded.empty()) {
+ DiagnoseUnexpandedParameterPacks(
+ DynamicExceptionRanges[ei].getBegin(), UPPC_ExceptionType,
+ Unexpanded);
+ continue;
+ }
}
// Check that the type is valid for an exception spec, and
@@ -13091,7 +13092,8 @@ Sema::checkExceptionSpecification(Except
NoexceptExpr->getType()->getCanonicalTypeUnqualified() ==
Context.BoolTy) &&
"Parser should have made sure that the expression is boolean");
- if (NoexceptExpr && DiagnoseUnexpandedParameterPack(NoexceptExpr)) {
+ if (IsTopLevel && NoexceptExpr &&
+ DiagnoseUnexpandedParameterPack(NoexceptExpr)) {
ESI.Type = EST_BasicNoexcept;
return;
}
Modified: cfe/trunk/lib/Sema/SemaExceptionSpec.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExceptionSpec.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaExceptionSpec.cpp (original)
+++ cfe/trunk/lib/Sema/SemaExceptionSpec.cpp Wed Sep 17 18:57:05 2014
@@ -720,10 +720,11 @@ static bool CheckSpecForTypesEquivalent(
/// assignment and override compatibility check. We do not check the parameters
/// of parameter function pointers recursively, as no sane programmer would
/// even be able to write such a function type.
-bool Sema::CheckParamExceptionSpec(const PartialDiagnostic & NoteID,
- const FunctionProtoType *Target, SourceLocation TargetLoc,
- const FunctionProtoType *Source, SourceLocation SourceLoc)
-{
+bool Sema::CheckParamExceptionSpec(const PartialDiagnostic &NoteID,
+ const FunctionProtoType *Target,
+ SourceLocation TargetLoc,
+ const FunctionProtoType *Source,
+ SourceLocation SourceLoc) {
if (CheckSpecForTypesEquivalent(
*this, PDiag(diag::err_deep_exception_specs_differ) << 0, PDiag(),
Target->getReturnType(), TargetLoc, Source->getReturnType(),
@@ -744,23 +745,30 @@ bool Sema::CheckParamExceptionSpec(const
return false;
}
-bool Sema::CheckExceptionSpecCompatibility(Expr *From, QualType ToType)
-{
+bool Sema::CheckExceptionSpecCompatibility(Expr *From, QualType ToType) {
// First we check for applicability.
// Target type must be a function, function pointer or function reference.
const FunctionProtoType *ToFunc = GetUnderlyingFunction(ToType);
- if (!ToFunc)
+ if (!ToFunc || ToFunc->hasDependentExceptionSpec())
return false;
// SourceType must be a function or function pointer.
const FunctionProtoType *FromFunc = GetUnderlyingFunction(From->getType());
- if (!FromFunc)
+ if (!FromFunc || FromFunc->hasDependentExceptionSpec())
return false;
// Now we've got the correct types on both sides, check their compatibility.
// This means that the source of the conversion can only throw a subset of
// the exceptions of the target, and any exception specs on arguments or
// return types must be equivalent.
+ //
+ // FIXME: If there is a nested dependent exception specification, we should
+ // not be checking it here. This is fine:
+ // template<typename T> void f() {
+ // void (*p)(void (*) throw(T));
+ // void (*q)(void (*) throw(int)) = p;
+ // }
+ // ... because it might be instantiated with T=int.
return CheckExceptionSpecSubset(PDiag(diag::err_incompatible_exception_specs),
PDiag(), ToFunc,
From->getSourceRange().getBegin(),
Modified: cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp (original)
+++ cfe/trunk/lib/Sema/SemaTemplateInstantiate.cpp Wed Sep 17 18:57:05 2014
@@ -788,12 +788,14 @@ namespace {
/// pack.
ExprResult TransformFunctionParmPackExpr(FunctionParmPackExpr *E);
- QualType TransformFunctionProtoType(TypeLocBuilder &TLB,
- FunctionProtoTypeLoc TL);
+ // Pull in the base class overload; it just forwards to our function.
+ using inherited::TransformFunctionProtoType;
+ template<typename Fn>
QualType TransformFunctionProtoType(TypeLocBuilder &TLB,
FunctionProtoTypeLoc TL,
CXXRecordDecl *ThisContext,
- unsigned ThisTypeQuals);
+ unsigned ThisTypeQuals,
+ Fn TransformExceptionSpec);
ParmVarDecl *TransformFunctionTypeParam(ParmVarDecl *OldParm,
int indexAdjustment,
@@ -1307,21 +1309,16 @@ ExprResult TemplateInstantiator::Transfo
E->getParam());
}
-QualType TemplateInstantiator::TransformFunctionProtoType(TypeLocBuilder &TLB,
- FunctionProtoTypeLoc TL) {
- // We need a local instantiation scope for this function prototype.
- LocalInstantiationScope Scope(SemaRef, /*CombineWithOuterScope=*/true);
- return inherited::TransformFunctionProtoType(TLB, TL);
-}
-
+template<typename Fn>
QualType TemplateInstantiator::TransformFunctionProtoType(TypeLocBuilder &TLB,
FunctionProtoTypeLoc TL,
CXXRecordDecl *ThisContext,
- unsigned ThisTypeQuals) {
+ unsigned ThisTypeQuals,
+ Fn TransformExceptionSpec) {
// We need a local instantiation scope for this function prototype.
LocalInstantiationScope Scope(SemaRef, /*CombineWithOuterScope=*/true);
- return inherited::TransformFunctionProtoType(TLB, TL, ThisContext,
- ThisTypeQuals);
+ return inherited::TransformFunctionProtoType(
+ TLB, TL, ThisContext, ThisTypeQuals, TransformExceptionSpec);
}
ParmVarDecl *
@@ -1556,7 +1553,8 @@ static bool NeedsInstantiationAsFunction
/// A form of SubstType intended specifically for instantiating the
/// type of a FunctionDecl. Its purpose is solely to force the
-/// instantiation of default-argument expressions.
+/// instantiation of default-argument expressions and to avoid
+/// instantiating an exception-specification.
TypeSourceInfo *Sema::SubstFunctionDeclType(TypeSourceInfo *T,
const MultiLevelTemplateArgumentList &Args,
SourceLocation Loc,
@@ -1579,9 +1577,17 @@ TypeSourceInfo *Sema::SubstFunctionDeclT
QualType Result;
+ // FIXME: What if the function type is parenthesized?
if (FunctionProtoTypeLoc Proto = TL.getAs<FunctionProtoTypeLoc>()) {
- Result = Instantiator.TransformFunctionProtoType(TLB, Proto, ThisContext,
- ThisTypeQuals);
+ // Instantiate the type, other than its exception specification. The
+ // exception specification is instantiated in InitFunctionInstantiation
+ // once we've built the FunctionDecl.
+ // FIXME: Set the exception specification to EST_Uninstantiated here,
+ // instead of rebuilding the function type again later.
+ Result = Instantiator.TransformFunctionProtoType(
+ TLB, Proto, ThisContext, ThisTypeQuals,
+ [](FunctionProtoType::ExceptionSpecInfo &ESI,
+ bool &Changed) { return false; });
} else {
Result = Instantiator.TransformType(TLB, TL);
}
@@ -1591,6 +1597,26 @@ TypeSourceInfo *Sema::SubstFunctionDeclT
return TLB.getTypeSourceInfo(Context, Result);
}
+void Sema::SubstExceptionSpec(FunctionDecl *New, const FunctionProtoType *Proto,
+ const MultiLevelTemplateArgumentList &Args) {
+ FunctionProtoType::ExceptionSpecInfo ESI =
+ Proto->getExtProtoInfo().ExceptionSpec;
+ assert(ESI.Type != EST_Uninstantiated);
+
+ TemplateInstantiator Instantiator(*this, Args, New->getLocation(),
+ New->getDeclName());
+
+ SmallVector<QualType, 4> ExceptionStorage;
+ bool Changed = false;
+ if (Instantiator.TransformExceptionSpec(
+ New->getTypeSourceInfo()->getTypeLoc().getLocEnd(), ESI,
+ ExceptionStorage, Changed))
+ // On error, recover by dropping the exception specification.
+ ESI.Type = EST_None;
+
+ UpdateExceptionSpec(New, ESI);
+}
+
ParmVarDecl *Sema::SubstParmVarDecl(ParmVarDecl *OldParm,
const MultiLevelTemplateArgumentList &TemplateArgs,
int indexAdjustment,
Modified: cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp (original)
+++ cfe/trunk/lib/Sema/SemaTemplateInstantiateDecl.cpp Wed Sep 17 18:57:05 2014
@@ -2988,7 +2988,7 @@ TemplateDeclInstantiator::SubstFunctionT
/// Introduce the instantiated function parameters into the local
/// instantiation scope, and set the parameter names to those used
/// in the template.
-static void addInstantiatedParametersToScope(Sema &S, FunctionDecl *Function,
+static bool addInstantiatedParametersToScope(Sema &S, FunctionDecl *Function,
const FunctionDecl *PatternDecl,
LocalInstantiationScope &Scope,
const MultiLevelTemplateArgumentList &TemplateArgs) {
@@ -2999,15 +2999,22 @@ static void addInstantiatedParametersToS
// Simple case: not a parameter pack.
assert(FParamIdx < Function->getNumParams());
ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx);
+ FunctionParam->setDeclName(PatternParam->getDeclName());
// If the parameter's type is not dependent, update it to match the type
// in the pattern. They can differ in top-level cv-qualifiers, and we want
// the pattern's type here. If the type is dependent, they can't differ,
- // per core issue 1668.
+ // per core issue 1668. Substitute into the type from the pattern, in case
+ // it's instantiation-dependent.
// FIXME: Updating the type to work around this is at best fragile.
- if (!PatternDecl->getType()->isDependentType())
- FunctionParam->setType(PatternParam->getType());
+ if (!PatternDecl->getType()->isDependentType()) {
+ QualType T = S.SubstType(PatternParam->getType(), TemplateArgs,
+ FunctionParam->getLocation(),
+ FunctionParam->getDeclName());
+ if (T.isNull())
+ return true;
+ FunctionParam->setType(T);
+ }
- FunctionParam->setDeclName(PatternParam->getDeclName());
Scope.InstantiatedLocal(PatternParam, FunctionParam);
++FParamIdx;
continue;
@@ -3019,136 +3026,27 @@ static void addInstantiatedParametersToS
= S.getNumArgumentsInExpansion(PatternParam->getType(), TemplateArgs);
assert(NumArgumentsInExpansion &&
"should only be called when all template arguments are known");
+ QualType PatternType =
+ PatternParam->getType()->castAs<PackExpansionType>()->getPattern();
for (unsigned Arg = 0; Arg < *NumArgumentsInExpansion; ++Arg) {
ParmVarDecl *FunctionParam = Function->getParamDecl(FParamIdx);
- if (!PatternDecl->getType()->isDependentType())
- FunctionParam->setType(PatternParam->getType());
-
FunctionParam->setDeclName(PatternParam->getDeclName());
- Scope.InstantiatedLocalPackArg(PatternParam, FunctionParam);
- ++FParamIdx;
- }
- }
-}
-
-static void InstantiateExceptionSpec(Sema &SemaRef, FunctionDecl *New,
- const FunctionProtoType *Proto,
- const MultiLevelTemplateArgumentList &TemplateArgs) {
- assert(Proto->getExceptionSpecType() != EST_Uninstantiated);
-
- // C++11 [expr.prim.general]p3:
- // If a declaration declares a member function or member function
- // template of a class X, the expression this is a prvalue of type
- // "pointer to cv-qualifier-seq X" between the optional cv-qualifer-seq
- // and the end of the function-definition, member-declarator, or
- // declarator.
- CXXRecordDecl *ThisContext = nullptr;
- unsigned ThisTypeQuals = 0;
- if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(New)) {
- ThisContext = Method->getParent();
- ThisTypeQuals = Method->getTypeQualifiers();
- }
- Sema::CXXThisScopeRAII ThisScope(SemaRef, ThisContext, ThisTypeQuals,
- SemaRef.getLangOpts().CPlusPlus11);
-
- // The function has an exception specification or a "noreturn"
- // attribute. Substitute into each of the exception types.
- SmallVector<QualType, 4> Exceptions;
- for (unsigned I = 0, N = Proto->getNumExceptions(); I != N; ++I) {
- // FIXME: Poor location information!
- if (const PackExpansionType *PackExpansion
- = Proto->getExceptionType(I)->getAs<PackExpansionType>()) {
- // We have a pack expansion. Instantiate it.
- SmallVector<UnexpandedParameterPack, 2> Unexpanded;
- SemaRef.collectUnexpandedParameterPacks(PackExpansion->getPattern(),
- Unexpanded);
- assert(!Unexpanded.empty() &&
- "Pack expansion without parameter packs?");
-
- bool Expand = false;
- bool RetainExpansion = false;
- Optional<unsigned> NumExpansions = PackExpansion->getNumExpansions();
- if (SemaRef.CheckParameterPacksForExpansion(New->getLocation(),
- SourceRange(),
- Unexpanded,
- TemplateArgs,
- Expand,
- RetainExpansion,
- NumExpansions))
- break;
-
- if (!Expand) {
- // We can't expand this pack expansion into separate arguments yet;
- // just substitute into the pattern and create a new pack expansion
- // type.
- Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, -1);
- QualType T = SemaRef.SubstType(PackExpansion->getPattern(),
- TemplateArgs,
- New->getLocation(), New->getDeclName());
+ if (!PatternDecl->getType()->isDependentType()) {
+ Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(S, Arg);
+ QualType T = S.SubstType(PatternType, TemplateArgs,
+ FunctionParam->getLocation(),
+ FunctionParam->getDeclName());
if (T.isNull())
- break;
-
- T = SemaRef.Context.getPackExpansionType(T, NumExpansions);
- Exceptions.push_back(T);
- continue;
- }
-
- // Substitute into the pack expansion pattern for each template
- bool Invalid = false;
- for (unsigned ArgIdx = 0; ArgIdx != *NumExpansions; ++ArgIdx) {
- Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(SemaRef, ArgIdx);
-
- QualType T = SemaRef.SubstType(PackExpansion->getPattern(),
- TemplateArgs,
- New->getLocation(), New->getDeclName());
- if (T.isNull()) {
- Invalid = true;
- break;
- }
-
- Exceptions.push_back(T);
+ return true;
+ FunctionParam->setType(T);
}
- if (Invalid)
- break;
-
- continue;
- }
-
- QualType T
- = SemaRef.SubstType(Proto->getExceptionType(I), TemplateArgs,
- New->getLocation(), New->getDeclName());
- if (T.isNull() ||
- SemaRef.CheckSpecifiedExceptionType(T, New->getLocation()))
- continue;
-
- Exceptions.push_back(T);
- }
- Expr *NoexceptExpr = nullptr;
- if (Expr *OldNoexceptExpr = Proto->getNoexceptExpr()) {
- EnterExpressionEvaluationContext Unevaluated(SemaRef,
- Sema::ConstantEvaluated);
- ExprResult E = SemaRef.SubstExpr(OldNoexceptExpr, TemplateArgs);
- if (E.isUsable())
- E = SemaRef.CheckBooleanCondition(E.get(), E.get()->getLocStart());
-
- if (E.isUsable()) {
- NoexceptExpr = E.get();
- if (!NoexceptExpr->isTypeDependent() &&
- !NoexceptExpr->isValueDependent())
- NoexceptExpr
- = SemaRef.VerifyIntegerConstantExpression(NoexceptExpr,
- nullptr, diag::err_noexcept_needs_constant_expression,
- /*AllowFold*/ false).get();
+ Scope.InstantiatedLocalPackArg(PatternParam, FunctionParam);
+ ++FParamIdx;
}
}
- FunctionProtoType::ExceptionSpecInfo ESI;
- ESI.Type = Proto->getExceptionSpecType();
- ESI.Exceptions = Exceptions;
- ESI.NoexceptExpr = NoexceptExpr;
-
- SemaRef.UpdateExceptionSpec(New, ESI);
+ return false;
}
void Sema::InstantiateExceptionSpec(SourceLocation PointOfInstantiation,
@@ -3175,11 +3073,14 @@ void Sema::InstantiateExceptionSpec(Sour
getTemplateInstantiationArgs(Decl, nullptr, /*RelativeToPrimary*/true);
FunctionDecl *Template = Proto->getExceptionSpecTemplate();
- addInstantiatedParametersToScope(*this, Decl, Template, Scope, TemplateArgs);
+ if (addInstantiatedParametersToScope(*this, Decl, Template, Scope,
+ TemplateArgs)) {
+ UpdateExceptionSpec(Decl, EST_None);
+ return;
+ }
- ::InstantiateExceptionSpec(*this, Decl,
- Template->getType()->castAs<FunctionProtoType>(),
- TemplateArgs);
+ SubstExceptionSpec(Decl, Template->getType()->castAs<FunctionProtoType>(),
+ TemplateArgs);
}
/// \brief Initializes the common fields of an instantiation function
@@ -3248,7 +3149,7 @@ TemplateDeclInstantiator::InitFunctionIn
New->setType(SemaRef.Context.getFunctionType(
NewProto->getReturnType(), NewProto->getParamTypes(), EPI));
} else {
- ::InstantiateExceptionSpec(SemaRef, New, Proto, TemplateArgs);
+ SemaRef.SubstExceptionSpec(New, Proto, TemplateArgs);
}
}
@@ -3438,8 +3339,9 @@ void Sema::InstantiateFunctionDefinition
MultiLevelTemplateArgumentList TemplateArgs =
getTemplateInstantiationArgs(Function, nullptr, false, PatternDecl);
- addInstantiatedParametersToScope(*this, Function, PatternDecl, Scope,
- TemplateArgs);
+ if (addInstantiatedParametersToScope(*this, Function, PatternDecl, Scope,
+ TemplateArgs))
+ return;
// If this is a constructor, instantiate the member initializers.
if (const CXXConstructorDecl *Ctor =
Modified: cfe/trunk/lib/Sema/SemaType.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaType.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaType.cpp (original)
+++ cfe/trunk/lib/Sema/SemaType.cpp Wed Sep 17 18:57:05 2014
@@ -2989,7 +2989,8 @@ static TypeSourceInfo *GetFullTypeForDec
NoexceptExpr = FTI.NoexceptExpr;
}
- S.checkExceptionSpecification(FTI.getExceptionSpecType(),
+ S.checkExceptionSpecification(D.isFunctionDeclarationContext(),
+ FTI.getExceptionSpecType(),
DynamicExceptions,
DynamicExceptionRanges,
NoexceptExpr,
Modified: cfe/trunk/lib/Sema/TreeTransform.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/TreeTransform.h?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/TreeTransform.h (original)
+++ cfe/trunk/lib/Sema/TreeTransform.h Wed Sep 17 18:57:05 2014
@@ -542,10 +542,17 @@ public:
QualType Transform##CLASS##Type(TypeLocBuilder &TLB, CLASS##TypeLoc T);
#include "clang/AST/TypeLocNodes.def"
+ template<typename Fn>
QualType TransformFunctionProtoType(TypeLocBuilder &TLB,
FunctionProtoTypeLoc TL,
CXXRecordDecl *ThisContext,
- unsigned ThisTypeQuals);
+ unsigned ThisTypeQuals,
+ Fn TransformExceptionSpec);
+
+ bool TransformExceptionSpec(SourceLocation Loc,
+ FunctionProtoType::ExceptionSpecInfo &ESI,
+ SmallVectorImpl<QualType> &Exceptions,
+ bool &Changed);
StmtResult TransformSEHHandler(Stmt *Handler);
@@ -4512,15 +4519,19 @@ template<typename Derived>
QualType
TreeTransform<Derived>::TransformFunctionProtoType(TypeLocBuilder &TLB,
FunctionProtoTypeLoc TL) {
- return getDerived().TransformFunctionProtoType(TLB, TL, nullptr, 0);
+ SmallVector<QualType, 4> ExceptionStorage;
+ return getDerived().TransformFunctionProtoType(
+ TLB, TL, nullptr, 0,
+ [&](FunctionProtoType::ExceptionSpecInfo &ESI, bool &Changed) {
+ return TransformExceptionSpec(TL.getBeginLoc(), ESI, ExceptionStorage,
+ Changed);
+ });
}
-template<typename Derived>
-QualType
-TreeTransform<Derived>::TransformFunctionProtoType(TypeLocBuilder &TLB,
- FunctionProtoTypeLoc TL,
- CXXRecordDecl *ThisContext,
- unsigned ThisTypeQuals) {
+template<typename Derived> template<typename Fn>
+QualType TreeTransform<Derived>::TransformFunctionProtoType(
+ TypeLocBuilder &TLB, FunctionProtoTypeLoc TL, CXXRecordDecl *ThisContext,
+ unsigned ThisTypeQuals, Fn TransformExceptionSpec) {
// Transform the parameters and return type.
//
// We are required to instantiate the params and return type in source order.
@@ -4565,15 +4576,21 @@ TreeTransform<Derived>::TransformFunctio
return QualType();
}
- // FIXME: Need to transform the exception-specification too.
+ FunctionProtoType::ExtProtoInfo EPI = T->getExtProtoInfo();
+
+ bool EPIChanged = false;
+ if (TransformExceptionSpec(EPI.ExceptionSpec, EPIChanged))
+ return QualType();
+
+ // FIXME: Need to transform ConsumedParameters for variadic template
+ // expansion.
QualType Result = TL.getType();
if (getDerived().AlwaysRebuild() || ResultType != T->getReturnType() ||
T->getNumParams() != ParamTypes.size() ||
!std::equal(T->param_type_begin(), T->param_type_end(),
- ParamTypes.begin())) {
- Result = getDerived().RebuildFunctionProtoType(ResultType, ParamTypes,
- T->getExtProtoInfo());
+ ParamTypes.begin()) || EPIChanged) {
+ Result = getDerived().RebuildFunctionProtoType(ResultType, ParamTypes, EPI);
if (Result.isNull())
return QualType();
}
@@ -4590,6 +4607,107 @@ TreeTransform<Derived>::TransformFunctio
}
template<typename Derived>
+bool TreeTransform<Derived>::TransformExceptionSpec(
+ SourceLocation Loc, FunctionProtoType::ExceptionSpecInfo &ESI,
+ SmallVectorImpl<QualType> &Exceptions, bool &Changed) {
+ assert(ESI.Type != EST_Uninstantiated && ESI.Type != EST_Unevaluated);
+
+ // Instantiate a dynamic noexcept expression, if any.
+ if (ESI.Type == EST_ComputedNoexcept) {
+ EnterExpressionEvaluationContext Unevaluated(getSema(),
+ Sema::ConstantEvaluated);
+ ExprResult NoexceptExpr = getDerived().TransformExpr(ESI.NoexceptExpr);
+ if (NoexceptExpr.isInvalid())
+ return true;
+
+ NoexceptExpr = getSema().CheckBooleanCondition(
+ NoexceptExpr.get(), NoexceptExpr.get()->getLocStart());
+ if (NoexceptExpr.isInvalid())
+ return true;
+
+ if (!NoexceptExpr.get()->isValueDependent()) {
+ NoexceptExpr = getSema().VerifyIntegerConstantExpression(
+ NoexceptExpr.get(), nullptr,
+ diag::err_noexcept_needs_constant_expression,
+ /*AllowFold*/false);
+ if (NoexceptExpr.isInvalid())
+ return true;
+ }
+
+ if (ESI.NoexceptExpr != NoexceptExpr.get())
+ Changed = true;
+ ESI.NoexceptExpr = NoexceptExpr.get();
+ }
+
+ if (ESI.Type != EST_Dynamic)
+ return false;
+
+ // Instantiate a dynamic exception specification's type.
+ for (QualType T : ESI.Exceptions) {
+ if (const PackExpansionType *PackExpansion =
+ T->getAs<PackExpansionType>()) {
+ Changed = true;
+
+ // We have a pack expansion. Instantiate it.
+ SmallVector<UnexpandedParameterPack, 2> Unexpanded;
+ SemaRef.collectUnexpandedParameterPacks(PackExpansion->getPattern(),
+ Unexpanded);
+ assert(!Unexpanded.empty() && "Pack expansion without parameter packs?");
+
+ // Determine whether the set of unexpanded parameter packs can and
+ // should
+ // be expanded.
+ bool Expand = false;
+ bool RetainExpansion = false;
+ Optional<unsigned> NumExpansions = PackExpansion->getNumExpansions();
+ // FIXME: Track the location of the ellipsis (and track source location
+ // information for the types in the exception specification in general).
+ if (getDerived().TryExpandParameterPacks(
+ Loc, SourceRange(), Unexpanded, Expand,
+ RetainExpansion, NumExpansions))
+ return true;
+
+ if (!Expand) {
+ // We can't expand this pack expansion into separate arguments yet;
+ // just substitute into the pattern and create a new pack expansion
+ // type.
+ Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1);
+ QualType U = getDerived().TransformType(PackExpansion->getPattern());
+ if (U.isNull())
+ return true;
+
+ U = SemaRef.Context.getPackExpansionType(U, NumExpansions);
+ Exceptions.push_back(U);
+ continue;
+ }
+
+ // Substitute into the pack expansion pattern for each slice of the
+ // pack.
+ for (unsigned ArgIdx = 0; ArgIdx != *NumExpansions; ++ArgIdx) {
+ Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), ArgIdx);
+
+ QualType U = getDerived().TransformType(PackExpansion->getPattern());
+ if (U.isNull() || SemaRef.CheckSpecifiedExceptionType(U, Loc))
+ return true;
+
+ Exceptions.push_back(U);
+ }
+ } else {
+ QualType U = getDerived().TransformType(T);
+ if (U.isNull() || SemaRef.CheckSpecifiedExceptionType(U, Loc))
+ return true;
+ if (T != U)
+ Changed = true;
+
+ Exceptions.push_back(U);
+ }
+ }
+
+ ESI.Exceptions = Exceptions;
+ return false;
+}
+
+template<typename Derived>
QualType TreeTransform<Derived>::TransformFunctionNoProtoType(
TypeLocBuilder &TLB,
FunctionNoProtoTypeLoc TL) {
@@ -8895,9 +9013,13 @@ TreeTransform<Derived>::TransformLambdaE
// transformed parameters.
TypeLocBuilder NewCallOpTLBuilder;
- QualType NewCallOpType = TransformFunctionProtoType(NewCallOpTLBuilder,
- OldCallOpFPTL,
- nullptr, 0);
+ SmallVector<QualType, 4> ExceptionStorage;
+ QualType NewCallOpType = TransformFunctionProtoType(
+ NewCallOpTLBuilder, OldCallOpFPTL, nullptr, 0,
+ [&](FunctionProtoType::ExceptionSpecInfo &ESI, bool &Changed) {
+ return TransformExceptionSpec(OldCallOpFPTL.getBeginLoc(), ESI,
+ ExceptionStorage, Changed);
+ });
NewCallOpTSI = NewCallOpTLBuilder.getTypeSourceInfo(getSema().Context,
NewCallOpType);
}
Modified: cfe/trunk/test/CXX/except/except.spec/p1.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CXX/except/except.spec/p1.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/test/CXX/except/except.spec/p1.cpp (original)
+++ cfe/trunk/test/CXX/except/except.spec/p1.cpp Wed Sep 17 18:57:05 2014
@@ -77,5 +77,12 @@ namespace PR11084 {
static int f() noexcept(1/X) { return 10; } // expected-error{{argument to noexcept specifier must be a constant expression}} expected-note{{division by zero}}
};
- void g() { A<0>::f(); } // expected-note{{in instantiation of exception specification for 'f' requested here}}
+ template<int X> void f() {
+ int (*p)() noexcept(1/X); // expected-error{{argument to noexcept specifier must be a constant expression}} expected-note{{division by zero}}
+ };
+
+ void g() {
+ A<0>::f(); // expected-note{{in instantiation of exception specification for 'f'}}
+ f<0>(); // expected-note{{in instantiation of function template specialization}}
+ }
}
Modified: cfe/trunk/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp (original)
+++ cfe/trunk/test/SemaTemplate/instantiate-exception-spec-cxx11.cpp Wed Sep 17 18:57:05 2014
@@ -137,3 +137,37 @@ namespace PR12763 {
};
void X::g() {} // expected-note {{in instantiation of}}
}
+
+namespace Variadic {
+ template<bool B> void check() { static_assert(B, ""); }
+ template<bool B, bool B2, bool ...Bs> void check() { static_assert(B, ""); check<B2, Bs...>(); }
+
+ template<typename ...T> void consume(T...);
+
+ template<typename ...T> void f(void (*...p)() throw (T)) {
+ void (*q[])() = { p... };
+ consume((p(),0)...);
+ }
+ template<bool ...B> void g(void (*...p)() noexcept (B)) {
+ consume((p(),0)...);
+ check<noexcept(p()) == B ...>();
+ }
+ template<typename ...T> void i() {
+ consume([]() throw(T) {} ...);
+ consume([]() noexcept(sizeof(T) == 4) {} ...);
+ }
+ template<bool ...B> void j() {
+ consume([](void (*p)() noexcept(B)) {
+ void (*q)() noexcept = p; // expected-error {{not superset of source}}
+ } ...);
+ }
+
+ void z() {
+ f<int, char, double>(nullptr, nullptr, nullptr);
+ g<true, false, true>(nullptr, nullptr, nullptr);
+ i<int, long, short>();
+ j<true, true>();
+ j<true, false>(); // expected-note {{in instantiation of}}
+ }
+
+}
Modified: cfe/trunk/test/SemaTemplate/instantiate-exception-spec.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaTemplate/instantiate-exception-spec.cpp?rev=217995&r1=217994&r2=217995&view=diff
==============================================================================
--- cfe/trunk/test/SemaTemplate/instantiate-exception-spec.cpp (original)
+++ cfe/trunk/test/SemaTemplate/instantiate-exception-spec.cpp Wed Sep 17 18:57:05 2014
@@ -1,5 +1,7 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -fexceptions -fcxx-exceptions -verify %s -DERRORS
+// RUN: %clang_cc1 -fexceptions -fcxx-exceptions -emit-llvm-only %s
+#ifdef ERRORS
template<typename T> void f1(T*) throw(T); // expected-error{{incomplete type 'Incomplete' is not allowed in exception specification}}
struct Incomplete; // expected-note{{forward}}
@@ -7,3 +9,20 @@ void test_f1(Incomplete *incomplete_p, i
f1(int_p);
f1(incomplete_p); // expected-note{{instantiation of}}
}
+#endif
+
+template<typename T> void f(void (*p)() throw(T)) {
+#ifdef ERRORS
+ void (*q)() throw(char) = p; // expected-error {{target exception spec}}
+
+ extern void (*p2)() throw(T);
+ void (*q2)() throw(char) = p2; // expected-error {{target exception spec}}
+
+ extern void (*p3)() throw(char);
+ void (*q3)() throw(T) = p3; // expected-error {{target exception spec}}
+
+ void (*q4)() throw(T) = p2; // ok
+#endif
+ p();
+}
+void g() { f<int>(0); } // expected-note {{instantiation of}}
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