1 // PR c++/57626
2 // { dg-do compile { target c++11 } }
3 
4 struct symbol_set{};
5 
6 template <typename T, template <typename ...> class TT, typename ... Args>
7 using bar = void(T::*)(TT<Args...> &, const symbol_set &);
8 
9 struct converter
10 {
11   template <typename Term, typename ... Args,
12 	    typename = decltype(bar<Term,Args...>(&Term::multiply))>  // { dg-error "pack expansion" }
13   converter(const Term &);
14 };
15