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 // void swap(match_results& that);
15 
16 #include <regex>
17 #include <cassert>
18 
19 void
test()20 test()
21 {
22     std::match_results<const char*> m1;
23     const char s[] = "abcdefghijk";
24     assert(std::regex_search(s, m1, std::regex("cd((e)fg)hi")));
25     std::match_results<const char*> m2;
26 
27     std::match_results<const char*> m1_save = m1;
28     std::match_results<const char*> m2_save = m2;
29 
30     m1.swap(m2);
31 
32     assert(m1 == m2_save);
33     assert(m2 == m1_save);
34 }
35 
main()36 int main()
37 {
38     test();
39 }
40