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fb3fc4bd | 1 | // { dg-do run { target c++11 } } |
7cc9022f | 2 | // { dg-require-effective-target hosted } |
aaf0ca6f | 3 | |
a945c346 | 4 | // Copyright (C) 2006-2024 Free Software Foundation, Inc. |
aaf0ca6f JW |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
aaf0ca6f JW |
10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
aaf0ca6f JW |
20 | |
21 | // 20.6.6.2.10 shared_ptr casts [util.smartptr.shared.cast] | |
22 | ||
23 | #include <memory> | |
fb3fc4bd | 24 | #include <testsuite_hooks.h> |
aaf0ca6f JW |
25 | #include <testsuite_tr1.h> |
26 | ||
aaf0ca6f JW |
27 | struct MyP { virtual ~MyP() { }; }; |
28 | struct MyDP : MyP { }; | |
29 | ||
fb3fc4bd JW |
30 | void |
31 | test01() | |
aaf0ca6f JW |
32 | { |
33 | using __gnu_test::check_ret_type; | |
34 | using std::shared_ptr; | |
35 | using std::static_pointer_cast; | |
36 | using std::const_pointer_cast; | |
37 | using std::dynamic_pointer_cast; | |
38 | ||
39 | shared_ptr<double> spd; | |
40 | shared_ptr<const int> spci; | |
41 | shared_ptr<MyP> spa; | |
42 | ||
fb3fc4bd JW |
43 | check_ret_type<shared_ptr<void>>(static_pointer_cast<void>(spd)); |
44 | check_ret_type<shared_ptr<int>>(const_pointer_cast<int>(spci)); | |
b6b66006 JW |
45 | // Non-polymorphic dynamic_cast works without RTTI. |
46 | check_ret_type<shared_ptr<MyP>>(dynamic_pointer_cast<MyP>(spa)); | |
47 | #if __cpp_rtti | |
48 | // But polymorphic dynamic_cast needs RTTI. | |
fb3fc4bd | 49 | check_ret_type<shared_ptr<MyDP>>(dynamic_pointer_cast<MyDP>(spa)); |
b6b66006 | 50 | #endif |
fb3fc4bd JW |
51 | } |
52 | ||
53 | void | |
54 | test02() | |
55 | { | |
56 | using std::shared_ptr; | |
57 | using std::static_pointer_cast; | |
58 | using std::const_pointer_cast; | |
59 | using std::dynamic_pointer_cast; | |
60 | ||
61 | int* ptr = new int(1); | |
62 | shared_ptr<const void> pcv(ptr); | |
63 | auto pci = static_pointer_cast<const int>(pcv); | |
64 | VERIFY(pci.use_count() == 2); | |
65 | VERIFY(pcv.use_count() == 2); | |
66 | VERIFY(pci.get() == ptr); | |
67 | VERIFY(pcv.get() == ptr); | |
68 | auto pi = const_pointer_cast<int>(pci); | |
69 | VERIFY(pi.use_count() == 3); | |
70 | VERIFY(pcv.use_count() == 3); | |
71 | VERIFY(pi.get() == ptr); | |
72 | VERIFY(pci.get() == ptr); | |
73 | ||
b6b66006 | 74 | #if __cpp_rtti |
fb3fc4bd JW |
75 | MyP* pptr = new MyP; |
76 | shared_ptr<MyP> pp(pptr); | |
77 | auto pdp = dynamic_pointer_cast<MyDP>(pp); | |
78 | VERIFY(pp.use_count() == 1); | |
79 | VERIFY(pdp.use_count() == 0); | |
80 | VERIFY(pdp.get() == nullptr); | |
81 | VERIFY(pp.get() == pptr); | |
82 | pptr = new MyDP; | |
83 | pp.reset(pptr); | |
84 | pdp = dynamic_pointer_cast<MyDP>(pp); | |
85 | VERIFY(pp.use_count() == 2); | |
86 | VERIFY(pdp.use_count() == 2); | |
87 | VERIFY(pdp.get() == pptr); | |
88 | VERIFY(pp.get() == pptr); | |
b6b66006 | 89 | #endif |
fb3fc4bd JW |
90 | } |
91 | ||
92 | int main() | |
93 | { | |
94 | test01(); | |
95 | test02(); | |
aaf0ca6f | 96 | } |