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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 // <strstream>
     11 
     12 // class ostrstream
     13 
     14 // strstreambuf* rdbuf() const;
     15 
     16 #include <strstream>
     17 #include <cassert>
     18 
     19 int main()
     20 {
     21     {
     22         char buf[] = "123 4.5 dog";
     23         const std::ostrstream out(buf, 0);
     24         std::strstreambuf* sb = out.rdbuf();
     25         assert(sb->sputc('a') == 'a');
     26         assert(buf == std::string("a23 4.5 dog"));
     27     }
     28 }
     29