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52066eae | 1 | // { dg-do run { target c++11 } } |
aaf0ca6f | 2 | |
818ab71a | 3 | // Copyright (C) 2005-2016 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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
748086b7 JJ |
17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | // 20.6.6.2 Template class shared_ptr [util.smartptr.shared] | |
21 | ||
22 | #include <memory> | |
23 | #include <testsuite_hooks.h> | |
24 | ||
25 | struct A { }; | |
26 | struct B : A { }; | |
27 | ||
28 | // 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs] | |
29 | ||
30 | // use_count | |
8dd5e93a | 31 | void |
aaf0ca6f JW |
32 | test01() |
33 | { | |
34 | bool test __attribute__((unused)) = true; | |
35 | ||
36 | const std::shared_ptr<A> p1; | |
37 | VERIFY( p1.use_count() == 0 ); | |
38 | const std::shared_ptr<A> p2(p1); | |
39 | VERIFY( p1.use_count() == 0 ); | |
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40 | } |
41 | ||
8dd5e93a | 42 | void |
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43 | test02() |
44 | { | |
45 | bool test __attribute__((unused)) = true; | |
46 | ||
47 | std::shared_ptr<A> p1(new A); | |
48 | std::shared_ptr<A> p2(p1); | |
49 | p1.reset(); | |
50 | VERIFY( p1.use_count() == 0 ); | |
51 | VERIFY( p2.use_count() == 1 ); | |
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52 | } |
53 | ||
8dd5e93a | 54 | void |
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55 | test03() |
56 | { | |
57 | bool test __attribute__((unused)) = true; | |
58 | ||
59 | std::shared_ptr<A> p1(new A); | |
60 | std::shared_ptr<A> p2(p1); | |
61 | p2.reset(new B); | |
62 | VERIFY( p1.use_count() == 1 ); | |
63 | VERIFY( p2.use_count() == 1 ); | |
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64 | } |
65 | ||
66 | ||
67 | int | |
68 | main() | |
69 | { | |
70 | test01(); | |
71 | test02(); | |
72 | test03(); | |
73 | return 0; | |
74 | } |