| // { dg-options "-std=gnu++2a" } |
| // { dg-do compile { target c++2a } } |
| // |
| // Copyright (C) 2019-2023 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| // |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| #include <tuple> |
| |
| constexpr bool |
| test_tuple() |
| { |
| auto ok = true; |
| |
| std::tuple<int, double, double> t1(1, 3.1415, 2.7182); |
| std::tuple<int, double, double> t2(1, 4.1234, 3.3333); |
| t1.swap(t2); |
| std::swap(t1, t2); |
| |
| return ok; |
| } |
| |
| static_assert(test_tuple()); |
