1 // { dg-options "-std=gnu++0x" }
2 //
3 // Copyright (C) 2012-2013 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 //
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15 //
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 #include <unordered_map>
21 #include <testsuite_hooks.h>
22
23 struct num
24 {
25 int value;
numnum26 num(int n) : value(n) {}
27 num(num const&) = default;
28 num& operator=(num const&) = default;
numnum29 num(num&& o) : value(o.value)
30 { o.value = -1; }
operator =num31 num& operator=(num&& o)
32 {
33 if (this != &o)
34 {
35 value = o.value;
36 o.value = -1;
37 }
38 return *this;
39 }
40 };
41
42 struct num_hash
43 {
operator ()num_hash44 size_t operator()(num const& a) const
45 { return a.value; }
46 };
47
48 struct num_equal
49 {
50 static bool _S_called_on_moved_instance;
operator ()num_equal51 bool operator()(num const& a, num const& b) const
52 {
53 if (a.value == -1 || b.value == -1)
54 _S_called_on_moved_instance = true;
55 return a.value == b.value;
56 }
57 };
58
59 bool num_equal::_S_called_on_moved_instance = false;
60
61 // libstdc++/51866
test01()62 void test01()
63 {
64 bool test __attribute__((unused)) = true;
65
66 std::unordered_multimap<num, int, num_hash, num_equal> mmap;
67 mmap.insert(std::make_pair(num(1), 1));
68 mmap.insert(std::make_pair(num(2), 2));
69 mmap.insert(std::make_pair(num(1), 3));
70 mmap.insert(std::make_pair(num(2), 4));
71 VERIFY( mmap.size() == 4 );
72 auto iter = mmap.cbegin();
73 auto x0 = (iter++)->first.value;
74 auto x1 = (iter++)->first.value;
75 auto x2 = (iter++)->first.value;
76 auto x3 = (iter++)->first.value;
77 VERIFY( iter == mmap.cend() );
78 VERIFY( (x0 == 1 && x1 == 1 && x2 == 2 && x3 == 2)
79 || (x0 == 2 && x1 == 2 && x2 == 1 && x3 == 1) );
80 VERIFY( !num_equal::_S_called_on_moved_instance );
81 }
82
main()83 int main()
84 {
85 test01();
86 return 0;
87 }
88