https://bugs.llvm.org/show_bug.cgi?id=47650
Bug ID: 47650
Summary: Crash in MicrosoftMangle.cpp mangleType
Product: clang
Version: 10.0
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: bigwal...@gmail.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
clang msvc-compat
I'm using clang::parseAST to parse wrl\event.h from the Windows 10 SDK. In my
Visitor::VisitFunctionDecl, I'm using the mangler to generate mangled names and
it is crashing on Microsoft::WRL::Callback.
The type is TemplateTypeParam, not RecordType, hence the crash.
I suspect the function in question is this:
// Construct a COM/WinRT delegate, an object with an Invoke() method, from an
object and member function.
template<typename TDelegateInterface, typename TCallbackObject, typename...
TArgs>
ComPtr<typename
Details::DelegateArgTraitsHelper<TDelegateInterface>::Interface> Callback(_In_
TCallbackObject *object, _In_ HRESULT(TCallbackObject::* method)(TArgs...))
throw()
{
return Callback<TDelegateInterface>([=](auto&& ...args) { return
((*object).*(method))(args ...); });
}
ocgen.exe!clang::Type::castAs<clang::RecordType>() Line 83 C++
> ocgen.exe!`anonymous
> namespace'::MicrosoftCXXNameMangler::mangleType(const
> clang::MemberPointerType * T, clang::Qualifiers Quals, clang::SourceRange
> Range) Line 2575 C++
ocgen.exe!`anonymous
namespace'::MicrosoftCXXNameMangler::mangleType(clang::QualType T,
clang::SourceRange Range,
`anonymous-namespace'::MicrosoftCXXNameMangler::QualifierMangleMode QMM) Line
48 C++
ocgen.exe!`anonymous
namespace'::MicrosoftCXXNameMangler::mangleFunctionArgumentType(clang::QualType
T, clang::SourceRange Range) Line 1785 C++
ocgen.exe!`anonymous
namespace'::MicrosoftCXXNameMangler::mangleFunctionType(const
clang::FunctionType * T, const clang::FunctionDecl * D, bool ForceThisQuals,
bool MangleExceptionSpec) Line 2300 C++
ocgen.exe!`anonymous
namespace'::MicrosoftCXXNameMangler::mangleFunctionEncoding(const
clang::FunctionDecl * FD, bool ShouldMangle) Line 533 C++
ocgen.exe!`anonymous namespace'::MicrosoftCXXNameMangler::mangle(const
clang::NamedDecl * D, llvm::StringRef Prefix) Line 499 C++
ocgen.exe!`anonymous
namespace'::MicrosoftMangleContextImpl::mangleCXXName(const clang::NamedDecl *
D, llvm::raw_ostream & Out) Line 2965 C++
ocgen.exe!clang::MangleContext::mangleName(const clang::NamedDecl * D,
llvm::raw_ostream & Out) Line 153 C++
<trim>
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