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52066eae | 1 | // { dg-do compile { target c++14 } } |
de0830e1 | 2 | |
818ab71a | 3 | // Copyright (C) 2015-2016 Free Software Foundation, Inc. |
de0830e1 VV |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | // | |
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <utility> | |
21 | #include <type_traits> | |
22 | ||
23 | typedef std::pair<int, long> test_type; | |
24 | ||
25 | template<std::size_t N, typename T> | |
26 | using Tuple_elt = std::tuple_element_t<N, T>; | |
27 | ||
28 | using std::is_same; | |
29 | ||
30 | static_assert( is_same<Tuple_elt<0, test_type>, test_type::first_type>::value, | |
31 | "first type is int" ); | |
32 | ||
33 | static_assert( is_same<Tuple_elt<1, test_type>, test_type::second_type>::value, | |
34 | "second type is long" ); | |
35 | ||
36 | static_assert( is_same<Tuple_elt<0, const test_type>, | |
37 | const test_type::first_type>::value, | |
38 | "first type is const int" ); | |
39 | ||
40 | static_assert( is_same<Tuple_elt<1, const test_type>, | |
41 | const test_type::second_type>::value, | |
42 | "second type is const long" ); | |
43 | ||
44 | static_assert( is_same<Tuple_elt<0, volatile test_type>, | |
45 | volatile test_type::first_type>::value, | |
46 | "first type is volatile int" ); | |
47 | ||
48 | static_assert( is_same<Tuple_elt<1, volatile test_type>, | |
49 | volatile test_type::second_type>::value, | |
50 | "second type is volatile long" ); | |
51 | ||
52 | static_assert( is_same<Tuple_elt<0, const volatile test_type>, | |
53 | const volatile test_type::first_type>::value, | |
54 | "first type is const volatile int" ); | |
55 | ||
56 | static_assert( is_same<Tuple_elt<1, const volatile test_type>, | |
57 | const volatile test_type::second_type>::value, | |
58 | "second type is const volatile long" ); |