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1 | // { dg-do run { target c++11 } } |
2 | ||
a945c346 | 3 | // Copyright (C) 2022-2024 Free Software Foundation, Inc. |
dc9b92fa FD |
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 | ||
20 | #include <unordered_map> | |
21 | #include <utility> | |
22 | ||
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | struct Key | |
26 | { | |
27 | explicit Key(const int* p) : value(p) { } | |
28 | ~Key() { value = nullptr; } | |
29 | ||
30 | bool operator==(const Key& k) const | |
31 | { return *value == *k.value; } | |
32 | ||
33 | const int* value; | |
34 | }; | |
35 | ||
36 | struct hash | |
37 | { | |
38 | std::size_t operator()(const Key& k) const noexcept | |
39 | { return *k.value; } | |
40 | }; | |
41 | ||
42 | struct S | |
43 | { | |
44 | static int _count; | |
45 | ||
46 | int value; | |
47 | operator std::pair<const Key, int>() const | |
48 | { | |
49 | ++_count; | |
50 | return { Key(&value), value }; | |
51 | } | |
52 | }; | |
53 | ||
54 | int S::_count = 0; | |
55 | ||
56 | void test01() | |
57 | { | |
58 | S s[1] = { {2} }; | |
59 | std::unordered_map<Key, int, hash> m; | |
60 | std::unordered_multimap<Key, int, hash> mm; | |
61 | ||
62 | m.insert(s, s + 1); | |
63 | VERIFY( S::_count == 1 ); | |
64 | ||
65 | mm.insert(s, s + 1); | |
66 | VERIFY( S::_count == 2 ); | |
67 | } | |
68 | ||
69 | int main() | |
70 | { | |
71 | test01(); | |
72 | return 0; | |
73 | } |