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7b936140 | 1 | // { dg-do compile { target c++17 } } |
20316b9b | 2 | |
7adcbafe | 3 | // Copyright (C) 2017-2022 Free Software Foundation, Inc. |
20316b9b JM |
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 <variant> | |
21 | ||
22 | template<typename T, typename U> struct require_same; | |
23 | template<typename T> struct require_same<T, T> { using type = void; }; | |
24 | ||
25 | template<typename T, typename U> | |
26 | typename require_same<T, U>::type | |
27 | check_type(U&) { } | |
28 | ||
29 | void | |
30 | test01() | |
31 | { | |
32 | std::variant<int, double> x(3); | |
33 | ||
34 | std::variant copy = x; | |
35 | check_type<decltype(x)>(copy); | |
36 | std::variant move = std::move(x); | |
37 | check_type<decltype(x)>(move); | |
38 | } |