1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <regex>
11 
12 // class match_results<BidirectionalIterator, Allocator>
13 
14 // template <class BidirectionalIterator, class Allocator>
15 //    void swap(match_results<BidirectionalIterator, Allocator>& m1,
16 //              match_results<BidirectionalIterator, Allocator>& m2);
17 
18 #include <regex>
19 #include <cassert>
20 #include "test_macros.h"
21 
22 void
test()23 test()
24 {
25     std::match_results<const char*> m1;
26     const char s[] = "abcdefghijk";
27     assert(std::regex_search(s, m1, std::regex("cd((e)fg)hi")));
28     std::match_results<const char*> m2;
29 
30     std::match_results<const char*> m1_save = m1;
31     std::match_results<const char*> m2_save = m2;
32 
33     swap(m1, m2);
34 
35     assert(m1 == m2_save);
36     assert(m2 == m1_save);
37 }
38 
main()39 int main()
40 {
41     test();
42 }
43