| // Copyright (C) 2018-2021 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++14 } } |
| |
| #include <experimental/memory_resource> |
| |
| namespace pmr = std::experimental::pmr; |
| |
| struct X |
| { |
| pmr::memory_resource* res = nullptr; |
| void* ptr = nullptr; |
| static constexpr std::size_t n = 64; |
| |
| constexpr X() { } |
| |
| explicit |
| X(pmr::memory_resource* r) : res(r), ptr(r->allocate(n)) { } |
| |
| ~X() { if (ptr) res->deallocate(ptr, n); } |
| }; |
| |
| void |
| swap(X& lhs, X& rhs) { |
| std::swap(lhs.res, rhs.res); |
| std::swap(lhs.ptr, rhs.ptr); |
| } |
| |
| void |
| test01() |
| { |
| static X x1; |
| X x2(pmr::new_delete_resource()); |
| swap(x1, x2); |
| // Now x1 will deallocate the memory during destruction of static objects. |
| } |
| |
| int main() |
| { |
| test01(); |
| } |