https://llvm.org/bugs/show_bug.cgi?id=25661
Bug ID: 25661
Summary: Clang frontend doesn't deal with class member function
pointer passed as template argument correctly on
Windows
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++11
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
This seems a regression of Windows targets in Clang 3.5 and it's reproducible
in the trunk.
$ cat test.cpp
template<typename T>
struct is_function
{
static constexpr bool value = false;
};
template<typename _Res, typename... _ArgTypes>
struct is_function<_Res(_ArgTypes...)>
{
static constexpr bool value = true;
};
template<typename>
struct helper {};
template<typename _Tp, typename _Cp>
struct helper<_Tp _Cp::*> : public is_function<_Tp> {};
class class_type {};
static_assert(
helper<void(class_type::*)()>::value
, "void(class_type::*)() IS a member function pointer");
$ clang-3.4/bin/clang -c -std=c++11 -target x86_64-unknown-linux-gnu test.cpp
$ clang-3.4/bin/clang -c -std=c++11 -target i686-pc-mingw32 test.cpp
$ clang-3.5/bin/clang -c -std=c++11 -target x86_64-unknown-linux-gnu test.cpp
$ clang-3.5/bin/clang -c -std=c++11 -target i686-pc-mingw32 test.cpp
test.cpp:19:1: error: static_assert failed "void(class_type::*)() IS a member
function pointer"
static_assert(
^
1 error generated.
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