1 // Copyright (C) 2014-2016 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library.  This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 // GNU General Public License for more details.
13 
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3.  If not see
16 // <http://www.gnu.org/licenses/>.
17 
18 // { dg-options "-std=gnu++11" }
19 
20 #include <unordered_set>
21 #include <testsuite_hooks.h>
22 
test01()23 void test01()
24 {
25   bool test __attribute__((unused)) = true;
26   std::unordered_set<int> us1 { 0, 1 };
27   {
28     std::unordered_set<int> us2(std::move(us1));
29 
30     us1.swap(us2);
31 
32     VERIFY( us1.find(0) != us1.end() );
33 
34     us1.insert(2);
35 
36     VERIFY( us1.size() == 3 );
37 
38     us2.swap(us1);
39 
40     VERIFY( us2.size() == 3 );
41     VERIFY( us2.find(2) != us2.end() );
42 
43     us1 = { 3, 4, 5 };
44 
45     VERIFY( us1.size() == 3 );
46     VERIFY( us1.bucket_count() >= 3 );
47 
48     std::unordered_set<int> us3(std::move(us1));
49     us3 = std::move(us2);
50 
51     us1.swap(us2);
52 
53     VERIFY( us1.empty() );
54     VERIFY( us2.empty() );
55   }
56 
57   us1 = { 0, 1 };
58   VERIFY( us1.size() == 2 );
59 }
60 
main()61 int main()
62 {
63   test01();
64   return 0;
65 }
66