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52066eae | 1 | // { dg-do run { target c++14 } } |
261b7e8a | 2 | |
85ec4feb | 3 | // Copyright (C) 2015-2018 Free Software Foundation, Inc. |
261b7e8a VV |
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 |
261b7e8a VV |
17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | #include <experimental/memory> | |
21 | #include <testsuite_hooks.h> | |
22 | #include <utility> | |
23 | ||
24 | using std::experimental::observer_ptr; | |
25 | ||
26 | struct B {}; | |
27 | struct D : B {}; | |
28 | ||
29 | void test01() | |
30 | { | |
31 | observer_ptr<int> a; | |
32 | VERIFY(!a); | |
33 | observer_ptr<int> b{nullptr}; | |
34 | VERIFY(!b); | |
35 | } | |
36 | ||
37 | void test02() | |
38 | { | |
39 | int x{}; | |
40 | observer_ptr<int> a{&x}; | |
41 | observer_ptr<int> b{a}; | |
42 | VERIFY(a == b); | |
43 | } | |
44 | ||
45 | void test03() | |
46 | { | |
47 | int x{}; | |
48 | observer_ptr<int> a; | |
49 | observer_ptr<const int> b{a}; | |
50 | VERIFY(a == b); | |
51 | } | |
52 | ||
53 | void test04() | |
54 | { | |
55 | D x{}; | |
56 | observer_ptr<D> a{&x}; | |
57 | observer_ptr<B> b{a}; | |
58 | VERIFY(a == b); | |
59 | } | |
60 | ||
61 | void test05() | |
62 | { | |
63 | D x{}; | |
64 | observer_ptr<D> a{&x}; | |
65 | observer_ptr<B> b{std::move(a)}; | |
66 | VERIFY(a == b); | |
67 | } | |
68 | ||
69 | void test06() | |
70 | { | |
71 | static constexpr D x{}; | |
72 | constexpr observer_ptr<const D> a{&x}; | |
73 | constexpr observer_ptr<const B> b{std::move(a)}; | |
74 | VERIFY(a == b); | |
75 | constexpr observer_ptr<const B> c{a}; | |
76 | VERIFY(a == b && a == c && b == c); | |
77 | constexpr observer_ptr<int> d; | |
78 | constexpr observer_ptr<int> e{nullptr}; | |
79 | VERIFY(!d); | |
80 | VERIFY(!e); | |
81 | } | |
82 | ||
83 | int main() | |
84 | { | |
85 | test01(); | |
86 | test02(); | |
87 | test03(); | |
88 | test04(); | |
89 | test05(); | |
90 | test06(); | |
91 | } |