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[Bug c++/48319] [4.6/4.7 Regression] [C++0x] Segmentation fault in instantiation of std::is_constructible<int>
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 28 Mar 2011 18:38:44 +0000
- Subject: [Bug c++/48319] [4.6/4.7 Regression] [C++0x] Segmentation fault in instantiation of std::is_constructible<int>
- Auto-submitted: auto-generated
- References: <bug-48319-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48319
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-28 18:38:37 UTC ---
reduced
template<typename Tp> Tp declval() noexcept;
template<typename _Tp>
class __is_constructible_helper
{
typedef char __one;
typedef struct { char __arr[2]; } __two;
template<typename _Tp1, typename... _Args1>
static decltype(_Tp1(declval<_Args1>()...), __one()) __test(int);
template<typename, typename...>
static __two __test(...);
public:
static const bool __value = sizeof(__test<_Tp>(0)) == 1;
};
int main() {
return __is_constructible_helper<int>::__value;
}