// { 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 // . #include constexpr bool test_array() { auto ok = true; std::array fa{{1.1f, 2.2f, 3.3f}}; std::array fb{{4.4f, 5.5f, 6.6f}}; fb.swap(fa); ok = ok && (fa[0] == 4.4f); std::swap(fa, fb); ok = ok && (fa[0] == 1.1f); return ok; } static_assert(test_array());