//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// <span>
// [[nodiscard]] constexpr bool empty() const noexcept;
#include <span>
void test() {
std::span<int> s1;
s1.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
int arr[] = {1, 2, 3};
std::span<int, 3> s2{arr};
s2.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
}