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// PR c++/48319
// { dg-do compile { target c++11 } }
// We were failing to recognize declval<_Args1> as dependent.
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;
}
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