[LLVMbugs] [Bug 9273] New: dependent operator name in template function argument type crashes clang

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9273

           Summary: dependent operator name in template function argument
                    type crashes clang
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++0x
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: richard-llvm at metafoo.co.uk
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


This causes clang to segfault:

template<typename T> void operator_(decltype(operator T)) {}
template void operator_<int>(int);

The crash is here:

#0  0x00000000009d29fc in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformNestedNameSpecifier(clang::NestedNameSpecifier*,
clang::SourceRange, clang::QualType, clang::NamedDecl*) ()
#1  0x00000000009d5181 in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformDependentScopeDeclRefExpr(clang::DependentScopeDeclRefExpr*)
()
#2  0x00000000009cbd05 in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformExpr(clang::Expr*) ()
#3  0x00000000009cdc97 in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformDecltypeType(clang::TypeLocBuilder&,
clang::DecltypeTypeLoc) ()
#4  0x00000000009c38bd in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformType(clang::TypeLocBuilder&,
clang::TypeLoc) ()
#5  0x00000000009c46c0 in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformType(clang::TypeSourceInfo*) ()
#6  0x00000000009c4dc2 in clang::Sema::SubstType(clang::TypeSourceInfo*,
clang::MultiLevelTemplateArgumentList const&, clang::SourceLocation,
clang::DeclarationName) ()
#7  0x00000000009c9833 in clang::Sema::SubstParmVarDecl(clang::ParmVarDecl*,
clang::MultiLevelTemplateArgumentList const&, llvm::Optional<unsigned int>) ()
#8  0x00000000009ca45e in clang::TreeTransform<(anonymous
namespace)::TemplateInstantiator>::TransformFunctionTypeParams(clang::SourceLocation,
clang::ParmVarDecl**, unsigned int, clang::QualType const*,
llvm::SmallVectorImpl<clang::QualType>&,
llvm::SmallVectorImpl<clang::ParmVarDecl*>*) ()

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