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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 // <sstream>
     11 
     12 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
     13 // class basic_ostringstream
     14 
     15 // explicit basic_ostringstream(ios_base::openmode which = ios_base::in);
     16 
     17 #include <sstream>
     18 #include <cassert>
     19 
     20 int main()
     21 {
     22     {
     23         std::ostringstream ss;
     24         assert(ss.rdbuf() != 0);
     25         assert(ss.good());
     26         assert(ss.str() == "");
     27     }
     28     {
     29         std::ostringstream ss(std::ios_base::out);
     30         assert(ss.rdbuf() != 0);
     31         assert(ss.good());
     32         assert(ss.str() == "");
     33     }
     34     {
     35         std::wostringstream ss;
     36         assert(ss.rdbuf() != 0);
     37         assert(ss.good());
     38         assert(ss.str() == L"");
     39     }
     40     {
     41         std::wostringstream ss(std::ios_base::out);
     42         assert(ss.rdbuf() != 0);
     43         assert(ss.good());
     44         assert(ss.str() == L"");
     45     }
     46 }
     47