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7adcbafe | 1 | // Copyright (C) 2005-2022 Free Software Foundation, Inc. |
7dfded91 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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
7dfded91 JW |
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 | |
748086b7 JJ |
15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
7dfded91 JW |
17 | |
18 | // TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared] | |
19 | ||
20 | #include <tr1/memory> | |
21 | #include <testsuite_hooks.h> | |
22 | ||
23 | struct A { }; | |
24 | struct B : A { }; | |
25 | ||
26 | // 2.2.3.5 shared_ptr observers [tr.util.smartptr.shared.obs] | |
27 | ||
28 | // use_count | |
29 | int | |
30 | test01() | |
31 | { | |
7dfded91 JW |
32 | const std::tr1::shared_ptr<A> p1; |
33 | VERIFY( p1.use_count() == 0 ); | |
34 | const std::tr1::shared_ptr<A> p2(p1); | |
35 | VERIFY( p1.use_count() == 0 ); | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | int | |
41 | test02() | |
42 | { | |
7dfded91 JW |
43 | std::tr1::shared_ptr<A> p1(new A); |
44 | std::tr1::shared_ptr<A> p2(p1); | |
45 | p1.reset(); | |
46 | VERIFY( p1.use_count() == 0 ); | |
47 | VERIFY( p2.use_count() == 1 ); | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | int | |
53 | test03() | |
54 | { | |
7dfded91 JW |
55 | std::tr1::shared_ptr<A> p1(new A); |
56 | std::tr1::shared_ptr<A> p2(p1); | |
57 | p2.reset(new B); | |
58 | VERIFY( p1.use_count() == 1 ); | |
59 | VERIFY( p2.use_count() == 1 ); | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | ||
f92ab29f | 65 | int |
7dfded91 JW |
66 | main() |
67 | { | |
68 | test01(); | |
69 | test02(); | |
70 | test03(); | |
71 | return 0; | |
72 | } |