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 // <istream> 11 12 // template <class charT, class traits = char_traits<charT> > 13 // class basic_istream; 14 15 // basic_istream& operator=(basic_istream&& rhs); 16 17 #include <istream> 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_istream 31 : public std::basic_istream<CharT> 32 { 33 typedef std::basic_istream<CharT> base; test_istreamtest_istream34 test_istream(testbuf<CharT>* sb) : base(sb) {} 35 operator =test_istream36 test_istream& operator=(test_istream&& s) 37 {base::operator=(std::move(s)); return *this;} 38 }; 39 40 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 41 main()42int main() 43 { 44 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 45 { 46 testbuf<char> sb1; 47 testbuf<char> sb2; 48 test_istream<char> is1(&sb1); 49 test_istream<char> is2(&sb2); 50 is2 = (std::move(is1)); 51 assert(is1.rdbuf() == &sb1); 52 assert(is1.tie() == 0); 53 assert(is1.fill() == ' '); 54 assert(is1.rdstate() == is1.goodbit); 55 assert(is1.exceptions() == is1.goodbit); 56 assert(is1.flags() == (is1.skipws | is1.dec)); 57 assert(is1.precision() == 6); 58 assert(is1.getloc().name() == "C"); 59 assert(is2.rdbuf() == &sb2); 60 assert(is2.tie() == 0); 61 assert(is2.fill() == ' '); 62 assert(is2.rdstate() == is2.goodbit); 63 assert(is2.exceptions() == is2.goodbit); 64 assert(is2.flags() == (is2.skipws | is2.dec)); 65 assert(is2.precision() == 6); 66 assert(is2.getloc().name() == "C"); 67 } 68 { 69 testbuf<wchar_t> sb1; 70 testbuf<wchar_t> sb2; 71 test_istream<wchar_t> is1(&sb1); 72 test_istream<wchar_t> is2(&sb2); 73 is2 = (std::move(is1)); 74 assert(is1.rdbuf() == &sb1); 75 assert(is1.tie() == 0); 76 assert(is1.fill() == ' '); 77 assert(is1.rdstate() == is1.goodbit); 78 assert(is1.exceptions() == is1.goodbit); 79 assert(is1.flags() == (is1.skipws | is1.dec)); 80 assert(is1.precision() == 6); 81 assert(is1.getloc().name() == "C"); 82 assert(is2.rdbuf() == &sb2); 83 assert(is2.tie() == 0); 84 assert(is2.fill() == ' '); 85 assert(is2.rdstate() == is2.goodbit); 86 assert(is2.exceptions() == is2.goodbit); 87 assert(is2.flags() == (is2.skipws | is2.dec)); 88 assert(is2.precision() == 6); 89 assert(is2.getloc().name() == "C"); 90 } 91 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 92 } 93