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52066eae | 1 | // { dg-do run { target c++14 } } |
930d5602 | 2 | |
83ffe9cd | 3 | // Copyright (C) 2015-2023 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 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING3. If not see | |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
20 | // 8.2.1 Class template shared_ptr [memory.smartptr.shared] | |
21 | ||
22 | #include <experimental/memory> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | struct A { }; | |
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26 | |
27 | // 8.2.1.2 shared_ptr observers [memory.smartptr.shared.obs] | |
28 | ||
29 | // use_count | |
30 | void | |
31 | test01() | |
32 | { | |
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33 | const std::experimental::shared_ptr<A[5]> p1; |
34 | VERIFY( p1.use_count() == 0 ); | |
35 | const std::experimental::shared_ptr<A[5]> p2(p1); | |
36 | VERIFY( p1.use_count() == 0 ); | |
37 | } | |
38 | ||
39 | void | |
40 | test02() | |
41 | { | |
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42 | std::experimental::shared_ptr<A[5]> p1(new A[5]); |
43 | std::experimental::shared_ptr<A[5]> p2(p1); | |
44 | p1.reset(); | |
45 | VERIFY( p1.use_count() == 0 ); | |
46 | VERIFY( p2.use_count() == 1 ); | |
47 | } | |
48 | ||
49 | void | |
50 | test03() | |
51 | { | |
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52 | std::experimental::shared_ptr<A[5]> p1(new A[5]); |
53 | std::experimental::shared_ptr<A[5]> p2(p1); | |
84870b6b | 54 | p2.reset(new A[5]); |
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55 | VERIFY( p1.use_count() == 1 ); |
56 | VERIFY( p2.use_count() == 1 ); | |
57 | } | |
58 | ||
59 | int | |
60 | main() | |
61 | { | |
62 | test01(); | |
63 | test02(); | |
64 | test03(); | |
65 | return 0; | |
66 | } |