1// { dg-do compile }
2// { dg-options "-std=gnu++11" }
3
4// Copyright (C) 2013-2015 Free Software Foundation, Inc.
5//
6// This file is part of the GNU ISO C++ Library.  This library is free
7// software; you can redistribute it and/or modify it under the
8// terms of the GNU General Public License as published by the
9// Free Software Foundation; either version 3, or (at your option)
10// any later version.
11//
12// This library is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15// GNU General Public License for more details.
16//
17// You should have received a copy of the GNU General Public License along
18// with this library; see the file COPYING3.  If not see
19// <http://www.gnu.org/licenses/>.
20
21#include <utility>
22#include <type_traits>
23
24typedef std::pair<int, long> test_type;
25
26static_assert( std::tuple_size<test_type>::value == 2, "size is 2" );
27
28template<std::size_t N, typename T>
29  using Tuple_elt = typename std::tuple_element<N, T>::type;
30
31using std::is_same;
32
33static_assert( is_same<Tuple_elt<0, test_type>, test_type::first_type>::value,
34               "first type is int" );
35
36static_assert( is_same<Tuple_elt<1, test_type>, test_type::second_type>::value,
37               "second type is long" );
38