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a945c346 | 1 | // Copyright (C) 2019-2024 Free Software Foundation, Inc. |
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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 | ||
762baaf0 | 18 | // { dg-do run { target c++20 } } |
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19 | |
20 | #include <iterator> | |
21 | #include <testsuite_hooks.h> | |
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22 | #include <testsuite_iterators.h> |
23 | ||
24 | static_assert(__gnu_test::is_customization_point_object(std::ranges::iter_move)); | |
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25 | |
26 | struct X | |
27 | { | |
28 | int value; | |
29 | ||
30 | constexpr X(int i) : value(i) { } | |
31 | ||
32 | X(const X&) = default; | |
33 | X& operator=(const X&) = default; | |
34 | ||
35 | constexpr X(X&& x) | |
36 | : value(x.value) | |
37 | { | |
38 | x.value = -2; | |
39 | } | |
40 | ||
41 | constexpr X& operator=(X&& x) | |
42 | { | |
43 | value = x.value; | |
44 | x.value = -1; | |
45 | return *this; | |
46 | } | |
47 | }; | |
48 | ||
49 | constexpr bool | |
50 | test_X(int i, int j) | |
51 | { | |
52 | X x1{i}, x2{j}; | |
240b01b0 | 53 | (void) std::ranges::iter_move(&x1); // no-op |
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54 | x1 = std::ranges::iter_move(&x2); |
55 | return x1.value == j && x2.value == -1; | |
56 | } | |
57 | ||
58 | static_assert( test_X(1, 2) ); | |
59 | ||
60 | void | |
61 | test01() | |
62 | { | |
63 | VERIFY( test_X(3, 4) ); | |
64 | } | |
65 | ||
66 | int | |
67 | main() | |
68 | { | |
69 | test01(); | |
70 | } |