| // Copyright (C) 2016-2023 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++11 } } |
| |
| #include <set> |
| #include <testsuite_hooks.h> |
| |
| template<typename T> |
| struct mv_allocator |
| { |
| using value_type = T; |
| using size_type = unsigned; |
| |
| mv_allocator() |
| : moved_to(false), moved_from(false) { } |
| |
| template<typename U> |
| mv_allocator(const mv_allocator<U> & a) |
| : moved_to(a.moved_to), moved_from(a.moved_from) { } |
| |
| mv_allocator(const mv_allocator &) = default; |
| |
| mv_allocator(mv_allocator && a) noexcept : moved_to(true) |
| { |
| a.moved_from = true; |
| } |
| |
| T* allocate(unsigned n) { return std::allocator<T>{}.allocate(n); } |
| void deallocate(T* p, unsigned n) { std::allocator<T>{}.deallocate(p, n); } |
| |
| bool moved_to; |
| bool moved_from; |
| }; |
| |
| template<typename T, typename U> |
| bool |
| operator==(const mv_allocator<T>&, const mv_allocator<U>&) { return true; } |
| |
| template<typename T, typename U> |
| bool |
| operator!=(const mv_allocator<T>&, const mv_allocator<U>&) { return false; } |
| |
| void |
| test01() |
| { |
| std::set<int, std::less<int>, mv_allocator<int>> s; |
| auto t = std::move(s); |
| VERIFY( s.get_allocator().moved_from ); |
| VERIFY( t.get_allocator().moved_to ); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| } |