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 // template <class charT, class traits> 16 // basic_ostream<charT,traits>& flush(basic_ostream<charT,traits>& os); 17 18 #include <ostream> 19 #include <cassert> 20 21 int sync_called = 0; 22 23 template <class CharT> 24 class testbuf 25 : public std::basic_streambuf<CharT> 26 { 27 public: 28 testbuf() 29 { 30 } 31 32 protected: 33 34 virtual int 35 sync() 36 { 37 ++sync_called; 38 return 0; 39 } 40 }; 41 42 int main() 43 { 44 { 45 testbuf<char> sb; 46 std::ostream os(&sb); 47 flush(os); 48 assert(sync_called == 1); 49 assert(os.good()); 50 } 51 { 52 testbuf<wchar_t> sb; 53 std::wostream os(&sb); 54 flush(os); 55 assert(sync_called == 2); 56 assert(os.good()); 57 } 58 } 59
