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8d9254fc | 1 | // Copyright (C) 2019-2020 Free Software Foundation, Inc. |
8c710065 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 | ||
18 | // { dg-do run { target c++11 } } | |
19 | ||
20 | #include <forward_list> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | // PR libstdc++/90105 - std::forward_list::sort() is not "stable" | |
24 | ||
25 | struct X | |
26 | { | |
27 | int key; | |
28 | int val; | |
29 | }; | |
30 | ||
31 | bool operator<(const X& l, const X& r) | |
32 | { return l.key < r.key; } | |
33 | ||
34 | bool operator==(const X& l, const X& r) | |
35 | { return l.key == r.key && l.val == r.val; } | |
36 | ||
37 | void | |
38 | test01() | |
39 | { | |
40 | std::forward_list<X> l{ {1, 1}, {2, 2}, {1, 3}, {0, 4}, {2, 5}, {0, 6} }; | |
41 | l.sort(); | |
42 | std::forward_list<X> exp{ {0, 4}, {0, 6}, {1, 1}, {1, 3}, {2, 2}, {2, 5} }; | |
43 | VERIFY( l == exp ); | |
44 | } | |
45 | ||
46 | void | |
47 | test02() | |
48 | { | |
49 | std::forward_list<X> l{ {1, 1}, {1, 2}, {1, 3}, {1, 4}, {1, 5}, {1, 6} }; | |
50 | const std::forward_list<X> exp = l; | |
51 | l.sort(); | |
52 | VERIFY( l == exp ); | |
53 | } | |
54 | ||
55 | int | |
56 | main() | |
57 | { | |
58 | test01(); | |
59 | test02(); | |
60 | } |