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 // void gbump(int n); 16 17 #include <streambuf> 18 #include <cassert> 19 20 template <class CharT> 21 struct test 22 : public std::basic_streambuf<CharT> 23 { 24 typedef std::basic_streambuf<CharT> base; 25 26 test() {} 27 28 void setg(CharT* gbeg, CharT* gnext, CharT* gend) 29 { 30 base::setg(gbeg, gnext, gend); 31 } 32 33 void gbump(int n) 34 { 35 CharT* gbeg = base::eback(); 36 CharT* gnext = base::gptr(); 37 CharT* gend = base::egptr(); 38 base::gbump(n); 39 assert(base::eback() == gbeg); 40 assert(base::gptr() == gnext+n); 41 assert(base::egptr() == gend); 42 } 43 }; 44 45 int main() 46 { 47 { 48 test<char> t; 49 char in[] = "ABCDE"; 50 t.setg(in, in+1, in+sizeof(in)/sizeof(in[0])); 51 t.gbump(2); 52 } 53 { 54 test<wchar_t> t; 55 wchar_t in[] = L"ABCDE"; 56 t.setg(in, in+1, in+sizeof(in)/sizeof(in[0])); 57 t.gbump(3); 58 } 59 } 60
