| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <unordered_set> |
| |
| // class unordered_set |
| |
| // bool empty() const noexcept; |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| |
| #include <unordered_set> |
| |
| #include "test_macros.h" |
| |
| int main(int, char**) |
| { |
| std::unordered_set<int> c; |
| c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} |
| |
| return 0; |
| } |
