blob: 86f900cda64731aa938b0b188073375dc6505fde (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// Copyright (C) 2019-2024 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do run { target c++20 } }
#include <iterator>
#include <testsuite_hooks.h>
#include <testsuite_iterators.h>
static_assert(__gnu_test::is_customization_point_object(std::ranges::iter_swap));
struct X
{
int value;
constexpr X(int i) : value(i) { }
X(const X&) = default;
X& operator=(const X&) = default;
constexpr X& operator=(X&& x)
{
value = x.value;
x.value = -1;
return *this;
}
};
constexpr bool
test_X(int i, int j)
{
X x1{i}, x2{j};
std::ranges::iter_swap(&x1, &x2);
return x1.value == j && x2.value == i;
}
static_assert( test_X(1, 2) );
void
test01()
{
VERIFY( test_X(3, 4) );
}
int
main()
{
test01();
}
|