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
main()26 int 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