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7b936140 | 1 | // { dg-do compile { target c++17 } } |
1dd95239 | 2 | |
7adcbafe | 3 | // Copyright (C) 2017-2022 Free Software Foundation, Inc. |
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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 | ||
af181c91 JW |
20 | #include <utility> |
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&) { } | |
1dd95239 VV |
28 | |
29 | struct MoveOnly | |
30 | { | |
31 | MoveOnly() = default; | |
98910bc2 PC |
32 | MoveOnly(MoveOnly&&); |
33 | MoveOnly& operator=(MoveOnly&&); | |
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34 | }; |
35 | ||
af181c91 JW |
36 | void |
37 | test01() | |
1dd95239 | 38 | { |
af181c91 JW |
39 | std::pair x{5, 6u}; |
40 | check_type<std::pair<int, unsigned>>(x); | |
41 | int y = 42; | |
42 | std::pair x2{y, 48u}; | |
43 | check_type<std::pair<int, unsigned>>(x2); | |
44 | const int z = 666; | |
45 | std::pair x3{z, y}; | |
46 | check_type<std::pair<int, int>>(x3); | |
47 | std::pair x4{1, x}; | |
48 | check_type<std::pair<int, std::pair<int, unsigned>>>(x4); | |
49 | std::pair mo{MoveOnly(), 2l}; | |
50 | check_type<std::pair<MoveOnly, long>>(mo); | |
51 | mo = {MoveOnly(), 3l}; | |
52 | ||
53 | std::pair copy = x; | |
54 | check_type<decltype(x)>(copy); | |
55 | std::pair copy2{x}; | |
56 | check_type<decltype(x)>(copy2); | |
57 | std::pair move = std::move(mo); | |
58 | check_type<decltype(mo)>(move); | |
1dd95239 | 59 | } |