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99dee823 | 1 | // Copyright (C) 2017-2021 Free Software Foundation, Inc. |
d69f1ec7 JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-options "-std=gnu++17" } | |
19 | // { dg-do compile { target c++17 } } | |
20 | ||
21 | #include <iterator> | |
22 | #include <initializer_list> | |
23 | ||
24 | void | |
25 | test01() | |
26 | { | |
27 | struct A { bool empty() const { return true; } }; | |
28 | A a; | |
29 | std::empty(a); // { dg-warning "ignoring return value" } | |
30 | } | |
31 | ||
32 | void | |
33 | test02() | |
34 | { | |
35 | int a[2]; | |
36 | std::empty(a); // { dg-warning "ignoring return value" } | |
37 | } | |
38 | ||
39 | void | |
40 | test03() | |
41 | { | |
42 | std::initializer_list<int> a{}; | |
43 | std::empty(a); // { dg-warning "ignoring return value" } | |
44 | } |