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20316b9b | 1 | // { dg-options "-std=gnu++17" } |
7b936140 | 2 | // { dg-do compile { target c++17 } } |
20316b9b | 3 | |
a5544970 | 4 | // Copyright (C) 2017-2019 Free Software Foundation, Inc. |
20316b9b JM |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | #include <variant> | |
22 | ||
23 | template<typename T, typename U> struct require_same; | |
24 | template<typename T> struct require_same<T, T> { using type = void; }; | |
25 | ||
26 | template<typename T, typename U> | |
27 | typename require_same<T, U>::type | |
28 | check_type(U&) { } | |
29 | ||
30 | void | |
31 | test01() | |
32 | { | |
33 | std::variant<int, double> x(3); | |
34 | ||
35 | std::variant copy = x; | |
36 | check_type<decltype(x)>(copy); | |
37 | std::variant move = std::move(x); | |
38 | check_type<decltype(x)>(move); | |
39 | } |