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: no-threads 10 // UNSUPPORTED: c++03, c++11, c++14, c++17 11 // XFAIL: availability-synchronization_library-missing 12 13 // [[nodiscard]] bool joinable() const noexcept; 14 // [[nodiscard]] id get_id() const noexcept; 15 // [[nodiscard]] native_handle_type native_handle(); 16 // [[nodiscard]] stop_source get_stop_source() noexcept; 17 // [[nodiscard]] stop_token get_stop_token() const noexcept; 18 // [[nodiscard]] static unsigned int hardware_concurrency() noexcept; 19 20 #include <thread> 21 22 void test() { 23 std::jthread jt; 24 jt.joinable(); // expected-warning {{ignoring return value of function}} 25 jt.get_id(); // expected-warning {{ignoring return value of function}} 26 jt.native_handle(); // expected-warning {{ignoring return value of function}} 27 jt.get_stop_source(); // expected-warning {{ignoring return value of function}} 28 jt.get_stop_token(); // expected-warning {{ignoring return value of function}} 29 jt.hardware_concurrency(); // expected-warning {{ignoring return value of function}} 30 } 31