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1 | // { dg-options "-std=gnu++0x" } |
2 | ||
3 | // Copyright (C) 2005, 2006, 2007 Free Software Foundation | |
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 2, 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 COPYING. If not, write to the Free | |
18 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | |
19 | // USA. | |
20 | ||
21 | // 20.6.6.2 Template class shared_ptr [util.smartptr.shared] | |
22 | ||
23 | #include <memory> | |
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | struct A { }; | |
27 | struct B : A { }; | |
28 | ||
29 | // 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs] | |
30 | ||
31 | // use_count | |
32 | int | |
33 | test01() | |
34 | { | |
35 | bool test __attribute__((unused)) = true; | |
36 | ||
37 | const std::shared_ptr<A> p1; | |
38 | VERIFY( p1.use_count() == 0 ); | |
39 | const std::shared_ptr<A> p2(p1); | |
40 | VERIFY( p1.use_count() == 0 ); | |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | int | |
46 | test02() | |
47 | { | |
48 | bool test __attribute__((unused)) = true; | |
49 | ||
50 | std::shared_ptr<A> p1(new A); | |
51 | std::shared_ptr<A> p2(p1); | |
52 | p1.reset(); | |
53 | VERIFY( p1.use_count() == 0 ); | |
54 | VERIFY( p2.use_count() == 1 ); | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | int | |
60 | test03() | |
61 | { | |
62 | bool test __attribute__((unused)) = true; | |
63 | ||
64 | std::shared_ptr<A> p1(new A); | |
65 | std::shared_ptr<A> p2(p1); | |
66 | p2.reset(new B); | |
67 | VERIFY( p1.use_count() == 1 ); | |
68 | VERIFY( p2.use_count() == 1 ); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | ||
74 | int | |
75 | main() | |
76 | { | |
77 | test01(); | |
78 | test02(); | |
79 | test03(); | |
80 | return 0; | |
81 | } |