1 // { dg-do compile { target c++11 } } 2 template<typename...> struct Tuple { }; 3 template<typename... Types> char& g(Tuple<Types...>); // #1 4 template<typename T1, typename... Types> short& g(Tuple<T1, Types...>); // #2 5 template<typename T1, typename... Types> int& g(Tuple<T1, Types&...>); // #3 6 f()7void f() { 8 // char& x1 = g(Tuple<>()); // calls #1 9 short& y1 = g(Tuple<int, float>()); // calls #2 10 // int& z1 = g(Tuple<int, float&>()); // calls #3 11 // int& z2 = g(Tuple<int>()); // calls #3 12 // int& z3 = g(Tuple<int>()); // calls #3 13 } 14