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& operator=(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 {
testbuftestbuf26     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;
test_ostreamtest_ostream34     test_ostream(testbuf<CharT>* sb) : base(sb) {}
35 
operator =test_ostream36     test_ostream& operator=(test_ostream&& s)
37         {base::operator=(std::move(s)); return *this;}
38 };
39 
40 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
41 
main()42 int main()
43 {
44 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
45     {
46         testbuf<char> sb1;
47         testbuf<char> sb2;
48         test_ostream<char> os1(&sb1);
49         test_ostream<char> os2(&sb2);
50         os2 = (std::move(os1));
51         assert(os1.rdbuf() == &sb1);
52         assert(os1.tie() == 0);
53         assert(os1.fill() == ' ');
54         assert(os1.rdstate() == os1.goodbit);
55         assert(os1.exceptions() == os1.goodbit);
56         assert(os1.flags() == (os1.skipws | os1.dec));
57         assert(os1.precision() == 6);
58         assert(os1.getloc().name() == "C");
59         assert(os2.rdbuf() == &sb2);
60         assert(os2.tie() == 0);
61         assert(os2.fill() == ' ');
62         assert(os2.rdstate() == os2.goodbit);
63         assert(os2.exceptions() == os2.goodbit);
64         assert(os2.flags() == (os2.skipws | os2.dec));
65         assert(os2.precision() == 6);
66         assert(os2.getloc().name() == "C");
67     }
68     {
69         testbuf<wchar_t> sb1;
70         testbuf<wchar_t> sb2;
71         test_ostream<wchar_t> os1(&sb1);
72         test_ostream<wchar_t> os2(&sb2);
73         os2 = (std::move(os1));
74         assert(os1.rdbuf() == &sb1);
75         assert(os1.tie() == 0);
76         assert(os1.fill() == ' ');
77         assert(os1.rdstate() == os1.goodbit);
78         assert(os1.exceptions() == os1.goodbit);
79         assert(os1.flags() == (os1.skipws | os1.dec));
80         assert(os1.precision() == 6);
81         assert(os1.getloc().name() == "C");
82         assert(os2.rdbuf() == &sb2);
83         assert(os2.tie() == 0);
84         assert(os2.fill() == ' ');
85         assert(os2.rdstate() == os2.goodbit);
86         assert(os2.exceptions() == os2.goodbit);
87         assert(os2.flags() == (os2.skipws | os2.dec));
88         assert(os2.precision() == 6);
89         assert(os2.getloc().name() == "C");
90     }
91 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
92 }
93