| // { dg-do compile { target c++17 } } |
| |
| // Copyright (C) 2017-2021 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 <variant> |
| |
| template<typename T, typename U> struct require_same; |
| template<typename T> struct require_same<T, T> { using type = void; }; |
| |
| template<typename T, typename U> |
| typename require_same<T, U>::type |
| check_type(U&) { } |
| |
| void |
| test01() |
| { |
| std::variant<int, double> x(3); |
| |
| std::variant copy = x; |
| check_type<decltype(x)>(copy); |
| std::variant move = std::move(x); |
| check_type<decltype(x)>(move); |
| } |
