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1 | // { dg-options "-std=gnu++1y" } |
2 | // { dg-do run } | |
3 | ||
aa118a03 | 4 | // Copyright (C) 2013-2014 Free Software Foundation, Inc. |
2b5ab1e4 MB |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a moved_to of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | #include <experimental/optional> | |
22 | #include <testsuite_hooks.h> | |
23 | ||
24 | #include <tuple> | |
25 | #include <string> | |
26 | ||
27 | namespace ns | |
28 | { | |
29 | struct value_type | |
30 | { | |
31 | int i; | |
32 | std::string s; | |
33 | }; | |
34 | ||
35 | bool | |
36 | operator==(value_type const& lhs, value_type const& rhs) | |
37 | { return std::tie(lhs.i, lhs.s) == std::tie(rhs.i, rhs.s); } | |
38 | ||
39 | bool | |
40 | operator!=(value_type const& lhs, value_type const& rhs) | |
41 | { return !(lhs == rhs); } | |
42 | ||
43 | bool | |
44 | operator<(value_type const& lhs, value_type const& rhs) | |
45 | { return std::tie(lhs.i, lhs.s) < std::tie(rhs.i, rhs.s); } | |
46 | ||
47 | } // namespace ns | |
48 | ||
49 | int main() | |
50 | { | |
51 | using ns::value_type; | |
52 | using O = std::experimental::optional<value_type>; | |
53 | using std::experimental::nullopt; | |
54 | ||
55 | { | |
56 | O o; | |
57 | VERIFY( o == nullopt ); | |
58 | VERIFY( nullopt == o ); | |
59 | VERIFY( !(o != nullopt) ); | |
60 | VERIFY( !(nullopt != o) ); | |
61 | } | |
62 | ||
63 | { | |
64 | O o { std::experimental::in_place }; | |
65 | VERIFY( !(o == nullopt) ); | |
66 | VERIFY( !(nullopt == o) ); | |
67 | VERIFY( o != nullopt ); | |
68 | VERIFY( nullopt != o ); | |
69 | } | |
70 | } |