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 // <streambuf> 11 12 // template <class charT, class traits = char_traits<charT> > 13 // class basic_streambuf; 14 15 // streamsize xsgetn(char_type* s, streamsize n); 16 17 #include <streambuf> 18 #include <cassert> 19 20 struct test 21 : public std::basic_streambuf<char> 22 { 23 typedef std::basic_streambuf<char> base; 24 25 test() {} 26 27 void setg(char* gbeg, char* gnext, char* gend) 28 { 29 base::setg(gbeg, gnext, gend); 30 } 31 }; 32 33 int main() 34 { 35 test t; 36 char input[7] = "123456"; 37 t.setg(input, input, input+7); 38 char output[sizeof(input)] = {0}; 39 assert(t.sgetn(output, 10) == 7); 40 assert(strcmp(input, output) == 0); 41 } 42
