1// PR c++/65051 2 3template<typename T> struct wrap { typedef T type; }; 4template <class T> class rv: public wrap <T>::type {}; 5 6template <class value_type> 7struct circular_buffer 8{ 9 typedef const value_type& param_value_type; 10 typedef rv< value_type >& rvalue_type; 11 12 void push_back(param_value_type item) {} 13 void push_back(rvalue_type item) {} 14}; 15 16union U { int i; char c; }; 17 18void f(circular_buffer<U> b, const U& u) { b.push_back(u); } 19