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: libcpp-has-no-experimental-stop_token
11// UNSUPPORTED: c++03, c++11, c++14, c++17
12// XFAIL: availability-synchronization_library-missing
13
14// [[nodiscard]] stop_token get_token() const noexcept;
15// [[nodiscard]] bool stop_possible() const noexcept;
16// [[nodiscard]] bool stop_requested() const noexcept;
17// [[nodiscard]] friend bool operator==(const stop_source& lhs, const stop_source& rhs) noexcept;
18
19#include <stop_token>
20
21void test() {
22 std::stop_source ss;
23 ss.get_token(); // expected-warning {{ignoring return value of function}}
24 ss.stop_requested(); // expected-warning {{ignoring return value of function}}
25 ss.stop_possible(); // expected-warning {{ignoring return value of function}}
26 operator==(ss, ss); // expected-warning {{ignoring return value of function}}
27}
28

source code of libcxx/test/std/thread/thread.stoptoken/stopsource/nodiscard.verify.cpp