http://llvm.org/bugs/show_bug.cgi?id=16836
Bug ID: 16836
Summary: [-cxx-abi microsoft] __uuidof inside of a template
argument cannot be mangled
Product: clang
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
__uuidof mangling is quite special, consider the following:
typedef struct _GUID
{
unsigned long Data1;
unsigned short Data2;
unsigned short Data3;
unsigned char Data4[8];
} GUID;
struct __declspec(uuid("12345678-1234-1234-1234-123456789abC")) uuid;
template <const _GUID&>
struct bar {
};
bar<__uuidof(uuid)> x;
this should be mangled like such:
?x@@3U?$bar@$E?_GUID_12345678_1234_1234_1234_123456789abc@@3U__s_GUID@@B@@A
Essentially, this has to be handled as-if we had:
struct __s_GUID _GUID_12345678_1234_1234_1234_123456789abc;
There is a pretty obvious problem, what is __s_GUID? It doesn't exist in any
AST. Heck, it's technically the flat-out wrong type, we should be looking at a
_GUID.
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