2 // { dg-do compile { target c++11 } }
4 template <typename> void declval();
5 template <typename> void forward();
6 template <typename> class D;
7 template <typename _Functor, typename... _Bound_args>
8 class D <_Functor(_Bound_args...)> {
9 template <typename... _Args, decltype(declval<_Functor>)>
10 void operator()(...) {