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7adcbafe | 1 | // Copyright (C) 2018-2022 Free Software Foundation, Inc. |
0ec78a93 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 | ||
0ec78a93 JW |
18 | // { dg-do run { target c++17 } } |
19 | ||
20 | #include <variant> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | void | |
24 | test01() | |
25 | { | |
26 | std::variant<std::monostate> v1, v2; | |
27 | std::swap(v1, v2); | |
28 | } | |
29 | ||
30 | void | |
31 | test02() | |
32 | { | |
33 | std::variant<int> v1{1}, v2{2}; | |
34 | std::swap(v1, v2); | |
35 | VERIFY( std::get<0>(v1) == 2 ); | |
36 | VERIFY( std::get<0>(v2) == 1 ); | |
37 | } | |
38 | ||
39 | void | |
40 | test03() | |
41 | { | |
42 | std::variant<double, int> v1{1}, v2{2.3}; | |
43 | std::swap(v1, v2); | |
44 | VERIFY( std::get<double>(v1) == 2.3 ); | |
45 | VERIFY( std::get<int>(v2) == 1 ); | |
46 | } | |
47 | ||
48 | int | |
49 | main() | |
50 | { | |
51 | test01(); | |
52 | test02(); | |
53 | test03(); | |
54 | } |