1 // Copyright (C) 2004-2021 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 #include <map>
19 #include <testsuite_hooks.h>
20
21 #if __cplusplus >= 201103L
22 # define NOTHROW noexcept
23 #else
24 # define NOTHROW
25 #endif
26
27 struct T { int i; };
28
29 // T must be LessThanComparable to pass concept-checks
operator <(T l,T r)30 bool operator<(T l, T r) { return l.i < r.i; }
31
32 int swap_calls;
33
34 namespace std
35 {
36 template<>
37 void
swap(multimap<T,int> &)38 multimap<T, int>::swap(multimap<T, int>&) NOTHROW
39 { ++swap_calls; }
40 }
41
42 // Should use multimap specialization for swap.
test01()43 void test01()
44 {
45 std::multimap<T, int> A;
46 std::multimap<T, int> B;
47 swap_calls = 0;
48 std::swap(A, B);
49 VERIFY(1 == swap_calls);
50 }
51
52 // Should use multimap specialization for swap.
test02()53 void test02()
54 {
55 using namespace std;
56 multimap<T, int> A;
57 multimap<T, int> B;
58 swap_calls = 0;
59 swap(A, B);
60 VERIFY(1 == swap_calls);
61 }
62
63 // See c++/13658 for background info.
main()64 int main()
65 {
66 test01();
67 test02();
68 return 0;
69 }
70