| // PR c++/64398 | |
| // { dg-do compile { target c++11 } } | |
| template<typename T> struct template1; | |
| template<typename T, typename> // second param required | |
| struct struct1{ | |
| using type1 = decltype(T::x); | |
| using type2 = template1<type1>; | |
| }; | |
| template<typename T> using alias1 = template1<decltype(T::x)>; | |
| // just for instantiation: | |
| template<typename T> using alias2 = alias1<T>; |