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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 // <streambuf>
     11 
     12 // template <class charT, class traits = char_traits<charT> >
     13 // class basic_streambuf;
     14 
     15 // void setg(char_type* gbeg, char_type* gnext, char_type* gend);
     16 
     17 #include <streambuf>
     18 #include <cassert>
     19 
     20 template <class CharT>
     21 struct test
     22     : public std::basic_streambuf<CharT>
     23 {
     24     typedef std::basic_streambuf<CharT> base;
     25 
     26     test() {}
     27 
     28     void setg(CharT* gbeg, CharT* gnext, CharT* gend)
     29     {
     30         base::setg(gbeg, gnext, gend);
     31         assert(base::eback() == gbeg);
     32         assert(base::gptr() == gnext);
     33         assert(base::egptr() == gend);
     34     }
     35 };
     36 
     37 int main()
     38 {
     39     {
     40         test<char> t;
     41         char in[] = "ABC";
     42         t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
     43     }
     44     {
     45         test<wchar_t> t;
     46         wchar_t in[] = L"ABC";
     47         t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
     48     }
     49 }
     50