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
10
11 // check that <map> functions are marked [[nodiscard]]
12
13 #include <map>
14
map_test()15 void map_test() {
16 std::map<int, int> map;
17 map.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
18 }
19
multimap_test()20 void multimap_test() {
21 std::multimap<int, int> multimap;
22 multimap.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
23 }
24