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fb3fc4bd | 1 | // { dg-do run { target c++11 } } |
aaf0ca6f | 2 | |
99dee823 | 3 | // Copyright (C) 2006-2021 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) |
aaf0ca6f JW |
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 | // 20.6.6.2.10 shared_ptr casts [util.smartptr.shared.cast] | |
21 | ||
22 | #include <memory> | |
fb3fc4bd | 23 | #include <testsuite_hooks.h> |
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24 | #include <testsuite_tr1.h> |
25 | ||
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26 | struct MyP { virtual ~MyP() { }; }; |
27 | struct MyDP : MyP { }; | |
28 | ||
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29 | void |
30 | test01() | |
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31 | { |
32 | using __gnu_test::check_ret_type; | |
33 | using std::shared_ptr; | |
34 | using std::static_pointer_cast; | |
35 | using std::const_pointer_cast; | |
36 | using std::dynamic_pointer_cast; | |
37 | ||
38 | shared_ptr<double> spd; | |
39 | shared_ptr<const int> spci; | |
40 | shared_ptr<MyP> spa; | |
41 | ||
fb3fc4bd JW |
42 | check_ret_type<shared_ptr<void>>(static_pointer_cast<void>(spd)); |
43 | check_ret_type<shared_ptr<int>>(const_pointer_cast<int>(spci)); | |
44 | check_ret_type<shared_ptr<MyDP>>(dynamic_pointer_cast<MyDP>(spa)); | |
45 | } | |
46 | ||
47 | void | |
48 | test02() | |
49 | { | |
50 | using std::shared_ptr; | |
51 | using std::static_pointer_cast; | |
52 | using std::const_pointer_cast; | |
53 | using std::dynamic_pointer_cast; | |
54 | ||
55 | int* ptr = new int(1); | |
56 | shared_ptr<const void> pcv(ptr); | |
57 | auto pci = static_pointer_cast<const int>(pcv); | |
58 | VERIFY(pci.use_count() == 2); | |
59 | VERIFY(pcv.use_count() == 2); | |
60 | VERIFY(pci.get() == ptr); | |
61 | VERIFY(pcv.get() == ptr); | |
62 | auto pi = const_pointer_cast<int>(pci); | |
63 | VERIFY(pi.use_count() == 3); | |
64 | VERIFY(pcv.use_count() == 3); | |
65 | VERIFY(pi.get() == ptr); | |
66 | VERIFY(pci.get() == ptr); | |
67 | ||
68 | MyP* pptr = new MyP; | |
69 | shared_ptr<MyP> pp(pptr); | |
70 | auto pdp = dynamic_pointer_cast<MyDP>(pp); | |
71 | VERIFY(pp.use_count() == 1); | |
72 | VERIFY(pdp.use_count() == 0); | |
73 | VERIFY(pdp.get() == nullptr); | |
74 | VERIFY(pp.get() == pptr); | |
75 | pptr = new MyDP; | |
76 | pp.reset(pptr); | |
77 | pdp = dynamic_pointer_cast<MyDP>(pp); | |
78 | VERIFY(pp.use_count() == 2); | |
79 | VERIFY(pdp.use_count() == 2); | |
80 | VERIFY(pdp.get() == pptr); | |
81 | VERIFY(pp.get() == pptr); | |
82 | } | |
83 | ||
84 | int main() | |
85 | { | |
86 | test01(); | |
87 | test02(); | |
aaf0ca6f | 88 | } |