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7adcbafe | 1 | // Copyright (C) 2019-2022 Free Software Foundation, Inc. |
17a73b3c 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 | ||
17a73b3c JW |
18 | // { dg-do run { target c++17 } } |
19 | ||
20 | #include <functional> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | void | |
24 | test01() | |
25 | { | |
26 | auto h1 = std::hash<std::nullptr_t>{}(nullptr); | |
27 | static_assert(std::is_same_v<decltype(h1), std::size_t>); | |
28 | auto h2 = std::hash<std::nullptr_t>{}(nullptr); | |
29 | VERIFY( h1 == h2 ); | |
30 | } | |
31 | ||
32 | int | |
33 | main() | |
34 | { | |
35 | test01(); | |
36 | } |