41 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: no-threads10// UNSUPPORTED: c++03, c++11, c++14, c++1711 12// [[nodiscard]] id get_id() const noexcept;13 14#include <cassert>15#include <concepts>16#include <thread>17#include <type_traits>18 19#include "make_test_thread.h"20#include "test_macros.h"21 22static_assert(noexcept(std::declval<const std::jthread&>().get_id()));23 24int main(int, char**) {25 // Does not represent a thread26 {27 const std::jthread jt;28 std::same_as<std::jthread::id> decltype(auto) result = jt.get_id();29 assert(result == std::jthread::id());30 }31 32 // Represents a thread33 {34 const std::jthread jt = support::make_test_jthread([] {});35 std::same_as<std::jthread::id> decltype(auto) result = jt.get_id();36 assert(result != std::jthread::id());37 }38 39 return 0;40}41