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 
20 #include "count_new.h"
21 
main(int,char **)22 int main(int, char**) {
23   // Constructing a monotonic_buffer_resource should not cause allocations
24   // by itself; the resource should wait to allocate until an allocation is
25   // requested.
26 
27   globalMemCounter.reset();
28   std::pmr::set_default_resource(std::pmr::new_delete_resource());
29 
30   std::pmr::monotonic_buffer_resource r1;
31   assert(globalMemCounter.checkNewCalledEq(0));
32 
33   std::pmr::monotonic_buffer_resource r2(1024);
34   assert(globalMemCounter.checkNewCalledEq(0));
35 
36   std::pmr::monotonic_buffer_resource r3(1024, std::pmr::new_delete_resource());
37   assert(globalMemCounter.checkNewCalledEq(0));
38 
39   return 0;
40 }
41