1// 2004-10-01 Paolo Carlini <pcarlini@suse.de> 2 3// Copyright (C) 2004 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 2, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING. If not, write to the Free 18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19// USA. 20 21// 27.7.1.3 Overridden virtual functions [lib.stringbuf.virtuals] 22 23#include <sstream> 24#include <testsuite_hooks.h> 25 26class my_stringbuf : public std::stringbuf 27{ 28public: 29 my_stringbuf(const std::string& str, std::ios_base::openmode mode) 30 : std::stringbuf(str, mode) { } 31 32 int_type 33 pub_pbackfail(int_type c) 34 { return this->pbackfail(c); } 35}; 36 37void test01() 38{ 39 bool test __attribute__((unused)) = true; 40 using namespace std; 41 42 typedef my_stringbuf::int_type int_type; 43 typedef my_stringbuf::traits_type traits_type; 44 45 my_stringbuf sbuf("any", ios_base::in | ios_base::out); 46 47 int_type c = sbuf.sgetc(); 48 VERIFY( c == 'a' ); 49 50 c = sbuf.pub_pbackfail('z'); 51 VERIFY( c == traits_type::eof() ); 52 c = sbuf.sbumpc(); 53 VERIFY( c == 'a' ); 54 55 c = sbuf.pub_pbackfail('a'); 56 VERIFY( c == 'a' ); 57 c = sbuf.sbumpc(); 58 VERIFY( c == 'a' ); 59 60 c = sbuf.pub_pbackfail('x'); 61 VERIFY( c == 'x' ); 62 c = sbuf.sbumpc(); 63 VERIFY( c == 'x' ); 64 65 const int_type eof = traits_type::eof(); 66 c = sbuf.pub_pbackfail(eof); 67 VERIFY( c == traits_type::not_eof(eof) ); 68 c = sbuf.sgetc(); 69 VERIFY( c == 'x' ); 70} 71 72int main() 73{ 74 test01(); 75 return 0; 76} 77