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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 // template <class BidirectionalIterator> class sub_match;
     13 
     14 // template <class charT, class ST, class BiIter>
     15 //     basic_ostream<charT, ST>&
     16 //     operator<<(basic_ostream<charT, ST>& os, const sub_match<BiIter>& m);
     17 
     18 #include <regex>
     19 #include <sstream>
     20 #include <cassert>
     21 
     22 template <class CharT>
     23 void
     24 test(const std::basic_string<CharT>& s)
     25 {
     26     typedef std::basic_string<CharT> string;
     27     typedef std::sub_match<typename string::const_iterator> SM;
     28     typedef std::basic_ostringstream<CharT> ostringstream;
     29     SM sm;
     30     sm.first = s.begin();
     31     sm.second = s.end();
     32     sm.matched = true;
     33     ostringstream os;
     34     os << sm;
     35     assert(os.str() == s);
     36 }
     37 
     38 int main()
     39 {
     40     test(std::string("123"));
     41     test(std::wstring(L"123"));
     42 }
     43