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83ffe9cd | 1 | // Copyright (C) 2019-2023 Free Software Foundation, Inc. |
7a9942f5 JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-options "-std=gnu++2a" } | |
19 | // { dg-do compile { target c++2a } } | |
20 | ||
21 | #include <utility> | |
22 | #include <tuple> | |
23 | ||
24 | constexpr int | |
25 | test01(int i, int j) | |
26 | { | |
27 | using T = std::tuple<int>; | |
28 | std::pair<int, int> p0, p1, p2, p3; | |
29 | std::pair<int, int> pij(std::piecewise_construct, T(i), T(j)); | |
30 | p0 = pij; | |
31 | p1 = std::move(pij); | |
32 | std::pair<long, long> pijl(i, j); | |
33 | p2 = pijl; | |
34 | p3 = std::move(pijl); | |
35 | return p0.first + p0.second + p1.first + p1.second | |
36 | + p2.first + p2.second + p3.first + p3.second; | |
37 | } | |
38 | ||
39 | static_assert( test01(3, 100) == 412 ); |