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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 // <fstream>
     11 
     12 // template <class charT, class traits = char_traits<charT> >
     13 // class basic_fstream
     14 
     15 // explicit basic_fstream(const wchar_t* s, ios_base::openmode mode = ios_base::in | ios_base::out);
     16 
     17 #include <fstream>
     18 #include <cassert>
     19 #include "platform_support.h"
     20 
     21 int main()
     22 {
     23 #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
     24     std::wstring temp = get_wide_temp_file_name();
     25     {
     26         std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
     27                                                 | std::ios_base::trunc);
     28         double x = 0;
     29         fs << 3.25;
     30         fs.seekg(0);
     31         fs >> x;
     32         assert(x == 3.25);
     33     }
     34     _wremove(temp.c_str());
     35     {
     36         std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
     37                                                  | std::ios_base::trunc);
     38         double x = 0;
     39         fs << 3.25;
     40         fs.seekg(0);
     41         fs >> x;
     42         assert(x == 3.25);
     43     }
     44     _wremove(temp.c_str());
     45 #endif
     46 }
     47