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// PR c++/66712
// { dg-options "-std=c++1z -fconcepts" }
template <class T, class...Args>
concept bool _Constructible_ =
requires (Args&&...args)
{
T{ ((Args&&)(args))... };
};
template <class T, class...Args>
constexpr bool _constructible_() { return false; }
_Constructible_{T, ...Args}
constexpr bool _constructible_() { return true; }
struct S
{
S(int, char const *);
};
int main()
{
static_assert(_constructible_<S, int, char const *>(), "");
}
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