64 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++1410// TODO: Change to XFAIL once https://llvm.org/PR40995 is fixed11// UNSUPPORTED: availability-pmr-missing12 13// <memory_resource>14 15// class monotonic_buffer_resource16 17#include <memory_resource>18#include <cassert>19#include <cstddef> // size_t20 21struct assert_on_compare : public std::pmr::memory_resource {22 void* do_allocate(std::size_t, size_t) override {23 assert(false);24 return nullptr;25 }26 27 void do_deallocate(void*, std::size_t, size_t) override { assert(false); }28 29 bool do_is_equal(const std::pmr::memory_resource&) const noexcept override {30 assert(false);31 return true;32 }33};34 35int main(int, char**) {36 // Same object37 {38 std::pmr::monotonic_buffer_resource r1;39 std::pmr::monotonic_buffer_resource r2;40 assert(r1 == r1);41 assert(r1 != r2);42 43 std::pmr::memory_resource& p1 = r1;44 std::pmr::memory_resource& p2 = r2;45 assert(p1 == p1);46 assert(p1 != p2);47 assert(p1 == r1);48 assert(r1 == p1);49 assert(p1 != r2);50 assert(r2 != p1);51 }52 // Different types53 {54 std::pmr::monotonic_buffer_resource mono1;55 std::pmr::memory_resource& r1 = mono1;56 assert_on_compare c;57 std::pmr::memory_resource& r2 = c;58 assert(r1 != r2);59 assert(!(r1 == r2));60 }61 62 return 0;63}64