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      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
     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 
     39 int main()
     40 {
     41     test();
     42 }
     43