1 // { dg-do compile { target c++11 } } 2 template<typename... T, T = 0> struct A {}; // { dg-error "parameter packs|T|the end|parameter packs|anonymous" } 3 4 struct B 5 { 6 template <template <typename...> class C> B(C<int>); 7 }; 8 9 B b = A<int>(); 10