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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_filebuf
     14 
     15 // basic_filebuf& operator=(basic_filebuf&& rhs);
     16 
     17 #include <fstream>
     18 #include <cassert>
     19 #include "platform_support.h"
     20 
     21 int main()
     22 {
     23 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     24     std::string temp = get_temp_file_name();
     25     {
     26         std::filebuf f;
     27         assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
     28                                                | std::ios_base::trunc) != 0);
     29         assert(f.is_open());
     30         assert(f.sputn("123", 3) == 3);
     31         f.pubseekoff(1, std::ios_base::beg);
     32         assert(f.sgetc() == '2');
     33         std::filebuf f2;
     34         f2 = move(f);
     35         assert(!f.is_open());
     36         assert(f2.is_open());
     37         assert(f2.sgetc() == '2');
     38     }
     39     std::remove(temp.c_str());
     40     {
     41         std::wfilebuf f;
     42         assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
     43                                                | std::ios_base::trunc) != 0);
     44         assert(f.is_open());
     45         assert(f.sputn(L"123", 3) == 3);
     46         f.pubseekoff(1, std::ios_base::beg);
     47         assert(f.sgetc() == L'2');
     48         std::wfilebuf f2;
     49         f2 = move(f);
     50         assert(!f.is_open());
     51         assert(f2.is_open());
     52         assert(f2.sgetc() == L'2');
     53     }
     54     std::remove(temp.c_str());
     55 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     56 }
     57