1 // { dg-do compile { target c++11 } } 2 3 template <typename> struct A { 4 template <typename, > struct __construct_helper; // { dg-error "expected" } 5 template <typename... _Args> 6 using __has_construct typename __construct_helper<_Args...>::type; // { dg-error "expected" } 7 } struct : A<int> { // { dg-error "expected" } 8