| // 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++17 } } |
| |
| #include <memory_resource> |
| #include <testsuite_allocator.h> |
| |
| void |
| test01() |
| { |
| __gnu_test::memory_resource r; |
| const auto null = std::pmr::null_memory_resource(); |
| const auto newdel = std::pmr::new_delete_resource(); |
| std::pmr::set_default_resource(null); |
| |
| { |
| std::pmr::monotonic_buffer_resource mr(&r); |
| VERIFY( mr.upstream_resource() == &r ); |
| __gnu_test::default_resource_mgr _(newdel); |
| VERIFY( mr.upstream_resource() == &r ); |
| } |
| { |
| std::pmr::monotonic_buffer_resource mr(128, &r); |
| VERIFY( mr.upstream_resource() == &r ); |
| __gnu_test::default_resource_mgr _(newdel); |
| VERIFY( mr.upstream_resource() == &r ); |
| } |
| { |
| unsigned char buf[64]; |
| std::pmr::monotonic_buffer_resource mr((void*)buf, sizeof(buf), &r); |
| VERIFY( mr.upstream_resource() == &r ); |
| __gnu_test::default_resource_mgr _(newdel); |
| VERIFY( mr.upstream_resource() == &r ); |
| } |
| { |
| std::pmr::monotonic_buffer_resource mr; |
| VERIFY( mr.upstream_resource() == null ); |
| __gnu_test::default_resource_mgr _(newdel); |
| VERIFY( mr.upstream_resource() == null ); |
| } |
| { |
| std::pmr::monotonic_buffer_resource mr(64); |
| VERIFY( mr.upstream_resource() == null ); |
| __gnu_test::default_resource_mgr _(newdel); |
| VERIFY( mr.upstream_resource() == null ); |
| } |
| { |
| unsigned char buf[64]; |
| std::pmr::monotonic_buffer_resource mr((void*)buf, sizeof(buf)); |
| VERIFY( mr.upstream_resource() == null ); |
| __gnu_test::default_resource_mgr _(newdel); |
| VERIFY( mr.upstream_resource() == null ); |
| } |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| } |