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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 // UNSUPPORTED: c++98, c++03
     11 
     12 // <istream>
     13 
     14 // template <class charT, class traits = char_traits<charT> >
     15 // class basic_iostream;
     16 
     17 // basic_iostream(basic_iostream&& rhs);
     18 
     19 #include <istream>
     20 #include <cassert>
     21 
     22 
     23 template <class CharT>
     24 struct testbuf
     25     : public std::basic_streambuf<CharT>
     26 {
     27     testbuf() {}
     28 };
     29 
     30 template <class CharT>
     31 struct test_iostream
     32     : public std::basic_iostream<CharT>
     33 {
     34     typedef std::basic_iostream<CharT> base;
     35     test_iostream(testbuf<CharT>* sb) : base(sb) {}
     36 
     37     test_iostream(test_iostream&& s)
     38         : base(std::move(s)) {}
     39 };
     40 
     41 
     42 int main()
     43 {
     44     {
     45         testbuf<char> sb;
     46         test_iostream<char> is1(&sb);
     47         test_iostream<char> is(std::move(is1));
     48         assert(is1.rdbuf() == &sb);
     49         assert(is1.gcount() == 0);
     50         assert(is.gcount() == 0);
     51         assert(is.rdbuf() == 0);
     52         assert(is.tie() == 0);
     53         assert(is.fill() == ' ');
     54         assert(is.rdstate() == is.goodbit);
     55         assert(is.exceptions() == is.goodbit);
     56         assert(is.flags() == (is.skipws | is.dec));
     57         assert(is.precision() == 6);
     58         assert(is.getloc().name() == "C");
     59     }
     60     {
     61         testbuf<wchar_t> sb;
     62         test_iostream<wchar_t> is1(&sb);
     63         test_iostream<wchar_t> is(std::move(is1));
     64         assert(is1.gcount() == 0);
     65         assert(is.gcount() == 0);
     66         assert(is1.rdbuf() == &sb);
     67         assert(is.rdbuf() == 0);
     68         assert(is.tie() == 0);
     69         assert(is.fill() == L' ');
     70         assert(is.rdstate() == is.goodbit);
     71         assert(is.exceptions() == is.goodbit);
     72         assert(is.flags() == (is.skipws | is.dec));
     73         assert(is.precision() == 6);
     74         assert(is.getloc().name() == "C");
     75     }
     76 }
     77