1 // PR c++/92594
2 // { dg-do compile { target c++11 } }
3 
4 template <typename _Head> struct tuple {
tupletuple5   tuple() : _M_head_impl() {}
6   _Head _M_head_impl;
7 };
8 template <typename type0> struct pod_tuple { type0 _head; };
9 struct e {};
10 struct bar : e {
11   using e::e;
12 };
main()13 int main() { tuple<pod_tuple<bar>> a; }
14