1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <tuple>
11
12// template <class... Types> class tuple;
13
14// template <size_t I, class... Types>
15// class tuple_element<I, tuple<Types...> >
16// {
17// public:
18//     typedef Ti type;
19// };
20
21// UNSUPPORTED: c++98, c++03
22
23#include <tuple>
24#include <type_traits>
25
26int main()
27{
28    using T =  std::tuple<int, long, void*>;
29    using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}}
30    using E2 = typename std::tuple_element<3, T>::type;
31    using E3 = typename std::tuple_element<4, T const>::type;
32        // expected-error@__tuple:* 2 {{static_assert failed}}
33
34}
35