| // { dg-options "-std=gnu++0x" } |
| // |
| // Copyright (C) 2012-2014 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/>. |
| |
| #include <unordered_map> |
| #include <testsuite_hooks.h> |
| |
| struct num |
| { |
| int value; |
| num(int n) : value(n) {} |
| num(num const&) = default; |
| num& operator=(num const&) = default; |
| num(num&& o) : value(o.value) |
| { o.value = -1; } |
| num& operator=(num&& o) |
| { |
| if (this != &o) |
| { |
| value = o.value; |
| o.value = -1; |
| } |
| return *this; |
| } |
| }; |
| |
| struct num_hash |
| { |
| size_t operator()(num const& a) const |
| { return a.value; } |
| }; |
| |
| struct num_equal |
| { |
| static bool _S_called_on_moved_instance; |
| bool operator()(num const& a, num const& b) const |
| { |
| if (a.value == -1 || b.value == -1) |
| _S_called_on_moved_instance = true; |
| return a.value == b.value; |
| } |
| }; |
| |
| bool num_equal::_S_called_on_moved_instance = false; |
| |
| // libstdc++/51866 |
| void test01() |
| { |
| bool test __attribute__((unused)) = true; |
| |
| std::unordered_multimap<num, int, num_hash, num_equal> mmap; |
| mmap.insert(std::make_pair(num(1), 1)); |
| mmap.insert(std::make_pair(num(2), 2)); |
| mmap.insert(std::make_pair(num(1), 3)); |
| mmap.insert(std::make_pair(num(2), 4)); |
| VERIFY( mmap.size() == 4 ); |
| auto iter = mmap.cbegin(); |
| auto x0 = (iter++)->first.value; |
| auto x1 = (iter++)->first.value; |
| auto x2 = (iter++)->first.value; |
| auto x3 = (iter++)->first.value; |
| VERIFY( iter == mmap.cend() ); |
| VERIFY( (x0 == 1 && x1 == 1 && x2 == 2 && x3 == 2) |
| || (x0 == 2 && x1 == 2 && x2 == 1 && x3 == 1) ); |
| VERIFY( !num_equal::_S_called_on_moved_instance ); |
| } |
| |
| int main() |
| { |
| test01(); |
| return 0; |
| } |