| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <tuple> |
| |
| // template <class... Types> class tuple; |
| |
| // template <size_t I, class... Types> |
| // class tuple_element<I, tuple<Types...> > |
| // { |
| // public: |
| // typedef Ti type; |
| // }; |
| |
| // UNSUPPORTED: c++98, c++03 |
| |
| #include <tuple> |
| #include <type_traits> |
| |
| int main() |
| { |
| using T = std::tuple<int, long, void*>; |
| using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}} |
| using E2 = typename std::tuple_element<3, T>::type; |
| using E3 = typename std::tuple_element<4, T const>::type; |
| // expected-error@__tuple:* 2 {{static_assert failed}} |
| |
| } |
