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b32b8144 FG |
1 | // |
2 | // shared_ptr_rv_pointer_cast_test.cpp | |
3 | // | |
4 | // Copyright (c) 2016 Chris Glover | |
5 | // | |
6 | // Distributed under the Boost Software License, Version 1.0. | |
7 | // See accompanying file LICENSE_1_0.txt or copy at | |
8 | // http://www.boost.org/LICENSE_1_0.txt | |
9 | // | |
10 | ||
11 | #include <boost/shared_ptr.hpp> | |
f67539c2 | 12 | #include <boost/core/lightweight_test.hpp> |
b32b8144 FG |
13 | |
14 | #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) | |
15 | ||
16 | struct X | |
17 | {}; | |
18 | ||
19 | struct Y: public X | |
20 | {}; | |
21 | ||
22 | struct U | |
23 | { | |
24 | virtual ~U() {} | |
25 | }; | |
26 | ||
27 | struct V: public U | |
28 | {}; | |
29 | ||
30 | struct W : public U | |
31 | {}; | |
32 | ||
33 | int main() | |
34 | { | |
35 | { | |
36 | boost::shared_ptr<X> px(new Y); | |
37 | ||
38 | boost::shared_ptr<Y> py1 = boost::static_pointer_cast<Y>(px); | |
39 | boost::shared_ptr<Y> py2 = boost::static_pointer_cast<Y>(std::move(px)); | |
40 | BOOST_TEST(!px); | |
41 | BOOST_TEST(px.use_count() == 0); | |
42 | BOOST_TEST(py1.get() == py2.get()); | |
43 | BOOST_TEST(!(py1 < py2 || py2 < py1)); | |
44 | BOOST_TEST(py1.use_count() == 2); | |
45 | BOOST_TEST(py2.use_count() == 2); | |
46 | } | |
47 | ||
48 | { | |
49 | boost::shared_ptr<int const volatile> px(new int); | |
50 | ||
51 | boost::shared_ptr<int> px2 = boost::const_pointer_cast<int>(px); | |
52 | boost::shared_ptr<int> px3 = boost::const_pointer_cast<int>(std::move(px)); | |
53 | BOOST_TEST(!px); | |
54 | BOOST_TEST(px.use_count() == 0); | |
55 | BOOST_TEST(px2.get() == px3.get()); | |
56 | BOOST_TEST(!(px2 < px3 || px2 < px3)); | |
57 | BOOST_TEST(px2.use_count() == 2); | |
58 | BOOST_TEST(px3.use_count() == 2); | |
59 | } | |
60 | ||
61 | { | |
62 | boost::shared_ptr<char> pv(reinterpret_cast<char*>(new Y)); | |
63 | ||
64 | boost::shared_ptr<Y> py1 = boost::reinterpret_pointer_cast<Y>(pv); | |
65 | boost::shared_ptr<Y> py2 = boost::reinterpret_pointer_cast<Y>(std::move(pv)); | |
66 | BOOST_TEST(!pv); | |
67 | BOOST_TEST(pv.use_count() == 0); | |
68 | BOOST_TEST(py1.get() == py2.get()); | |
69 | BOOST_TEST(!(py1 < py2 || py2 < py1)); | |
70 | BOOST_TEST(py1.use_count() == 2); | |
71 | BOOST_TEST(py2.use_count() == 2); | |
72 | } | |
73 | ||
74 | #if !defined( BOOST_NO_RTTI ) | |
75 | { | |
76 | boost::shared_ptr<U> pu(new V); | |
77 | ||
78 | boost::shared_ptr<V> pv1 = boost::dynamic_pointer_cast<V>(pu); | |
79 | boost::shared_ptr<V> pv2 = boost::dynamic_pointer_cast<V>(std::move(pu)); | |
80 | BOOST_TEST(!pu); | |
81 | BOOST_TEST(pu.use_count() == 0); | |
82 | BOOST_TEST(pv1.get() == pv2.get()); | |
83 | BOOST_TEST(!(pv1 < pv2 || pv2 < pv1)); | |
84 | BOOST_TEST(pv1.use_count() == 2); | |
85 | BOOST_TEST(pv2.use_count() == 2); | |
86 | } | |
87 | ||
88 | { | |
89 | boost::shared_ptr<U> pu(new V); | |
90 | boost::shared_ptr<W> pw = boost::dynamic_pointer_cast<W>(std::move(pu)); | |
91 | BOOST_TEST(!pw); | |
92 | BOOST_TEST(pu); | |
93 | } | |
94 | #endif // !defined( BOOST_NO_RTTI ) | |
95 | ||
96 | return boost::report_errors(); | |
97 | } | |
98 | ||
99 | #else // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) | |
100 | ||
101 | int main() | |
102 | { | |
103 | return 0; | |
104 | } | |
105 | ||
106 | #endif // !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |