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1 | // |
2 | // sp_recursive_assign_rv_test.cpp | |
3 | // | |
4 | // Copyright 2009 Peter Dimov | |
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 | ||
12 | #include <boost/shared_ptr.hpp> | |
f67539c2 | 13 | #include <boost/core/lightweight_test.hpp> |
7c673cae FG |
14 | |
15 | // | |
16 | ||
17 | class X | |
18 | { | |
19 | public: | |
20 | ||
21 | static int instances; | |
22 | ||
23 | X() | |
24 | { | |
25 | ++instances; | |
26 | } | |
27 | ||
28 | ~X() | |
29 | { | |
30 | --instances; | |
31 | } | |
32 | ||
33 | private: | |
34 | ||
35 | X( X const& ); | |
36 | }; | |
37 | ||
38 | int X::instances = 0; | |
39 | ||
40 | class Y | |
41 | { | |
42 | public: | |
43 | ||
44 | static int instances; | |
45 | ||
46 | Y() | |
47 | { | |
48 | ++instances; | |
49 | } | |
50 | ||
51 | ~Y() | |
52 | { | |
53 | --instances; | |
54 | } | |
55 | ||
56 | private: | |
57 | ||
58 | Y( Y const& ); | |
59 | }; | |
60 | ||
61 | int Y::instances = 0; | |
62 | ||
63 | static boost::shared_ptr<void> s_pv; | |
64 | ||
65 | class Z | |
66 | { | |
67 | public: | |
68 | ||
69 | static int instances; | |
70 | ||
71 | Z() | |
72 | { | |
73 | ++instances; | |
74 | } | |
75 | ||
76 | ~Z() | |
77 | { | |
78 | --instances; | |
79 | s_pv = boost::shared_ptr<void>( new Y ); | |
80 | } | |
81 | ||
82 | private: | |
83 | ||
84 | Z( Z const& ); | |
85 | }; | |
86 | ||
87 | int Z::instances = 0; | |
88 | ||
89 | int main() | |
90 | { | |
91 | BOOST_TEST( X::instances == 0 ); | |
92 | BOOST_TEST( Y::instances == 0 ); | |
93 | BOOST_TEST( Z::instances == 0 ); | |
94 | ||
95 | s_pv = boost::shared_ptr<void>( new Z ); | |
96 | ||
97 | BOOST_TEST( X::instances == 0 ); | |
98 | BOOST_TEST( Y::instances == 0 ); | |
99 | BOOST_TEST( Z::instances == 1 ); | |
100 | ||
101 | s_pv = boost::shared_ptr<void>( new X ); | |
102 | ||
103 | BOOST_TEST( X::instances == 0 ); | |
104 | BOOST_TEST( Y::instances == 1 ); | |
105 | BOOST_TEST( Z::instances == 0 ); | |
106 | ||
107 | s_pv = boost::shared_ptr<void>(); | |
108 | ||
109 | BOOST_TEST( X::instances == 0 ); | |
110 | BOOST_TEST( Y::instances == 0 ); | |
111 | BOOST_TEST( Z::instances == 0 ); | |
112 | ||
113 | return boost::report_errors(); | |
114 | } |