1 // Copyright 2011, 2020 Peter Dimov
2 // Distributed under the Boost Software License, Version 1.0.
3 // https://www.boost.org/LICENSE_1_0.txt
4
5 #include <boost/weak_ptr.hpp>
6 #include <boost/shared_ptr.hpp>
7 #include <boost/core/lightweight_test.hpp>
8 #include <boost/config.hpp>
9
10 #if defined(BOOST_NO_CXX11_HDR_UNORDERED_SET)
11
main()12 int main() {}
13
14 #else
15
16 #include <unordered_set>
17
main()18 int main()
19 {
20 std::unordered_set< boost::weak_ptr<void> > set;
21
22 boost::shared_ptr<int> p1( (int*)0 );
23 boost::shared_ptr<int> p2( p1 );
24 boost::shared_ptr<void> p3( p1 );
25
26 set.insert( p1 );
27 set.insert( p2 );
28 set.insert( p3 );
29
30 BOOST_TEST_EQ( set.size(), 1 );
31
32 boost::weak_ptr<int> q1( p1 );
33 boost::weak_ptr<int> q2( p2 );
34 boost::weak_ptr<void> q3( p3 );
35 boost::weak_ptr<int> q4( q2 );
36 boost::weak_ptr<void> q5( q3 );
37
38 set.insert( q1 );
39 set.insert( q2 );
40 set.insert( q3 );
41 set.insert( q4 );
42 set.insert( q5 );
43
44 BOOST_TEST_EQ( set.size(), 1 );
45
46 boost::shared_ptr<int> p6( (int*)0 );
47
48 set.insert( p6 );
49
50 BOOST_TEST_EQ( set.size(), 2 );
51
52 boost::weak_ptr<int> q6( p6 );
53
54 set.insert( q6 );
55
56 BOOST_TEST_EQ( set.size(), 2 );
57
58 BOOST_TEST_EQ( set.count( q1 ), 1 );
59 BOOST_TEST_EQ( set.count( q2 ), 1 );
60 BOOST_TEST_EQ( set.count( q3 ), 1 );
61 BOOST_TEST_EQ( set.count( q4 ), 1 );
62 BOOST_TEST_EQ( set.count( q5 ), 1 );
63 BOOST_TEST_EQ( set.count( q6 ), 1 );
64
65 boost::shared_ptr<int> p7( (int*)0 );
66 boost::weak_ptr<int> q7( p7 );
67
68 BOOST_TEST_EQ( set.count( q7 ), 0 );
69
70 p1.reset();
71 p2.reset();
72 p3.reset();
73 p6.reset();
74 p7.reset();
75
76 BOOST_TEST_EQ( set.count( q1 ), 1 );
77 BOOST_TEST_EQ( set.count( q2 ), 1 );
78 BOOST_TEST_EQ( set.count( q3 ), 1 );
79 BOOST_TEST_EQ( set.count( q4 ), 1 );
80 BOOST_TEST_EQ( set.count( q5 ), 1 );
81 BOOST_TEST_EQ( set.count( q6 ), 1 );
82 BOOST_TEST_EQ( set.count( q7 ), 0 );
83
84 return boost::report_errors();
85 }
86
87 #endif // #if defined(BOOST_NO_CXX11_HDR_UNORDERED_SET)
88