1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03, c++11, c++14
10// TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
11// UNSUPPORTED: availability-pmr-missing
12
13// <memory_resource>
14
15// class monotonic_buffer_resource
16
17#include <memory_resource>
18#include <cassert>
19
20int main(int, char**) {
21 std::pmr::memory_resource* expected = std::pmr::null_memory_resource();
22 std::pmr::set_default_resource(expected);
23 {
24 char buffer[16];
25 std::pmr::monotonic_buffer_resource r1;
26 std::pmr::monotonic_buffer_resource r2(16);
27 std::pmr::monotonic_buffer_resource r3(buffer, sizeof buffer);
28 assert(r1.upstream_resource() == expected);
29 assert(r2.upstream_resource() == expected);
30 assert(r3.upstream_resource() == expected);
31 }
32
33 expected = std::pmr::new_delete_resource();
34 std::pmr::set_default_resource(expected);
35 {
36 char buffer[16];
37 std::pmr::monotonic_buffer_resource r1;
38 std::pmr::monotonic_buffer_resource r2(16);
39 std::pmr::monotonic_buffer_resource r3(buffer, sizeof buffer);
40 assert(r1.upstream_resource() == expected);
41 assert(r2.upstream_resource() == expected);
42 assert(r3.upstream_resource() == expected);
43 }
44
45 return 0;
46}
47

source code of libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/with_default_resource.pass.cpp