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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 // <ostream>
     11 
     12 // template <class charT, class traits = char_traits<charT> >
     13 // class basic_ostream;
     14 
     15 // basic_ostream(basic_ostream&& rhs);
     16 
     17 #include <ostream>
     18 #include <cassert>
     19 
     20 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     21 
     22 template <class CharT>
     23 struct testbuf
     24     : public std::basic_streambuf<CharT>
     25 {
     26     testbuf() {}
     27 };
     28 
     29 template <class CharT>
     30 struct test_ostream
     31     : public std::basic_ostream<CharT>
     32 {
     33     typedef std::basic_ostream<CharT> base;
     34     test_ostream(testbuf<CharT>* sb) : base(sb) {}
     35 
     36     test_ostream(test_ostream&& s)
     37         : base(std::move(s)) {}
     38 };
     39 
     40 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     41 
     42 int main()
     43 {
     44 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     45     {
     46         testbuf<char> sb;
     47         test_ostream<char> os1(&sb);
     48         test_ostream<char> os(std::move(os1));
     49         assert(os1.rdbuf() == &sb);
     50         assert(os.rdbuf() == 0);
     51         assert(os.tie() == 0);
     52         assert(os.fill() == ' ');
     53         assert(os.rdstate() == os.goodbit);
     54         assert(os.exceptions() == os.goodbit);
     55         assert(os.flags() == (os.skipws | os.dec));
     56         assert(os.precision() == 6);
     57         assert(os.getloc().name() == "C");
     58     }
     59     {
     60         testbuf<wchar_t> sb;
     61         test_ostream<wchar_t> os1(&sb);
     62         test_ostream<wchar_t> os(std::move(os1));
     63         assert(os1.rdbuf() == &sb);
     64         assert(os.rdbuf() == 0);
     65         assert(os.tie() == 0);
     66         assert(os.fill() == L' ');
     67         assert(os.rdstate() == os.goodbit);
     68         assert(os.exceptions() == os.goodbit);
     69         assert(os.flags() == (os.skipws | os.dec));
     70         assert(os.precision() == 6);
     71         assert(os.getloc().name() == "C");
     72     }
     73 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     74 }
     75