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f1717362 | 1 | // Copyright (C) 2011-2016 Free Software Foundation, Inc. |
8683d45d | 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 | ||
19 | // { dg-do compile } | |
8868286e | 20 | // { dg-options "-std=gnu++11" } |
8683d45d | 21 | |
22 | #include <unordered_set> | |
23 | ||
24 | struct X | |
25 | { | |
26 | template<typename T> | |
27 | X(T&) {} | |
28 | }; | |
29 | ||
6e546604 | 30 | struct X_hash |
31 | { std::size_t operator()(const X&) const { return 0; } }; | |
32 | ||
8683d45d | 33 | bool operator==(const X&, const X&) { return false; } |
34 | ||
35 | // LWG 2059. | |
6e546604 | 36 | void erasor(std::unordered_multiset<X, X_hash>& s, X x) |
8683d45d | 37 | { |
6e546604 | 38 | std::unordered_multiset<X, X_hash>::iterator it = s.find(x); |
8683d45d | 39 | if (it != s.end()) |
40 | s.erase(it); | |
41 | } |