1 // PR c++/69515 2 // { dg-do link { target c++14 } } 3 4 struct A { A(int = 0) {} }; 5 6 template<class...> class meow; 7 8 template<typename T> A foo; 9 template<typename... Ts> A foo<meow<Ts...>> = 1; 10 11 auto&& a = foo<meow<int>>; 12 auto&& b = foo<meow<int, int>>; 13 main()14int main() {} 15