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, c++17
10
11// Check that std::rotl and std::rotr are marked [[nodiscard]]
12
13#include <bit>
14
15void func() {
16 std::rotl(0u, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
17 std::rotr(0u, 0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
18}
19

source code of libcxx/test/std/numerics/bit/bitops.rot/nodiscard.verify.cpp