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 // <array>
10
11 // class array
12
13 // bool empty() const noexcept;
14
15 // UNSUPPORTED: c++03, c++11, c++14, c++17
16
17 #include <array>
18
19 #include "test_macros.h"
20
main(int,char **)21 int main(int, char**)
22 {
23
24 std::array<int, 1> c;
25 c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
26 std::array<int, 0> c0;
27 c0.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
28
29 return 0;
30 }
31