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52066eae | 1 | // { dg-do run { target c++14 } } |
2b5ab1e4 | 2 | |
8d9254fc | 3 | // Copyright (C) 2013-2020 Free Software Foundation, Inc. |
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4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
c7cbb4da | 16 | // You should have received a copy of the GNU General Public License along |
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17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <experimental/optional> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | #include <tuple> | |
24 | #include <string> | |
25 | ||
26 | namespace ns | |
27 | { | |
28 | struct value_type | |
29 | { | |
30 | int i; | |
31 | std::string s; | |
32 | }; | |
33 | ||
34 | bool | |
35 | operator==(value_type const& lhs, value_type const& rhs) | |
36 | { return std::tie(lhs.i, lhs.s) == std::tie(rhs.i, rhs.s); } | |
37 | ||
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38 | bool |
39 | operator<(value_type const& lhs, value_type const& rhs) | |
40 | { return std::tie(lhs.i, lhs.s) < std::tie(rhs.i, rhs.s); } | |
41 | ||
42 | } // namespace ns | |
43 | ||
44 | int main() | |
45 | { | |
46 | using ns::value_type; | |
47 | using O = std::experimental::optional<value_type>; | |
48 | ||
49 | value_type const reference { 42, "forty-two" }; | |
50 | ||
51 | { | |
52 | O o; | |
53 | VERIFY( !(o == reference) ); | |
54 | VERIFY( !(reference == o) ); | |
55 | VERIFY( o != reference ); | |
56 | VERIFY( reference != o ); | |
57 | } | |
58 | ||
59 | { | |
60 | O o { value_type { 11, "eleventy" } }; | |
61 | VERIFY( !(o == reference) ); | |
62 | VERIFY( !(reference == o) ); | |
63 | VERIFY( o != reference ); | |
64 | VERIFY( reference != o ); | |
65 | } | |
66 | ||
67 | { | |
68 | O o { value_type { 42, "forty-two" } }; | |
69 | VERIFY( o == reference ); | |
70 | VERIFY( reference == o ); | |
71 | VERIFY( !(o != reference) ); | |
72 | VERIFY( !(reference != o) ); | |
73 | } | |
74 | } |