1 // PR c++/78765
2 // { dg-do compile { target c++11 } }
3 
4 template <template <typename ...> class TT>
5 struct quote {
6   template <typename ...Ts>
7   using apply = TT<Ts...>;  // { dg-error "pack expansion" }
8 };
9 
10 template <typename>
11 using to_int_t = int;
12 
13 using t = quote<quote<to_int_t>::apply>::apply<int>;
14