// 2004-10-01 Paolo Carlini // Copyright (C) 2004, 2009 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // . // 27.7.1.3 Overridden virtual functions [lib.stringbuf.virtuals] #include #include class my_stringbuf : public std::stringbuf { public: my_stringbuf(const std::string& str, std::ios_base::openmode mode) : std::stringbuf(str, mode) { } int_type pub_pbackfail(int_type c) { return this->pbackfail(c); } }; void test01() { bool test __attribute__((unused)) = true; using namespace std; typedef my_stringbuf::int_type int_type; typedef my_stringbuf::traits_type traits_type; my_stringbuf sbuf("any", ios_base::in | ios_base::out); int_type c = sbuf.sgetc(); VERIFY( c == 'a' ); c = sbuf.pub_pbackfail('z'); VERIFY( c == traits_type::eof() ); c = sbuf.sbumpc(); VERIFY( c == 'a' ); c = sbuf.pub_pbackfail('a'); VERIFY( c == 'a' ); c = sbuf.sbumpc(); VERIFY( c == 'a' ); c = sbuf.pub_pbackfail('x'); VERIFY( c == 'x' ); c = sbuf.sbumpc(); VERIFY( c == 'x' ); const int_type eof = traits_type::eof(); c = sbuf.pub_pbackfail(eof); VERIFY( c == traits_type::not_eof(eof) ); c = sbuf.sgetc(); VERIFY( c == 'x' ); } int main() { test01(); return 0; }