1// 2004-10-01 Paolo Carlini <pcarlini@suse.de> 2 3// Copyright (C) 2004, 2009 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 3, 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 COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20// 27.7.1.3 Overridden virtual functions [lib.stringbuf.virtuals] 21 22#include <sstream> 23#include <testsuite_hooks.h> 24 25class my_stringbuf : public std::stringbuf 26{ 27public: 28 my_stringbuf(const std::string& str, std::ios_base::openmode mode) 29 : std::stringbuf(str, mode) { } 30 31 int_type 32 pub_pbackfail(int_type c) 33 { return this->pbackfail(c); } 34}; 35 36void test01() 37{ 38 bool test __attribute__((unused)) = true; 39 using namespace std; 40 41 typedef my_stringbuf::int_type int_type; 42 typedef my_stringbuf::traits_type traits_type; 43 44 my_stringbuf sbuf("any", ios_base::in | ios_base::out); 45 46 int_type c = sbuf.sgetc(); 47 VERIFY( c == 'a' ); 48 49 c = sbuf.pub_pbackfail('z'); 50 VERIFY( c == traits_type::eof() ); 51 c = sbuf.sbumpc(); 52 VERIFY( c == 'a' ); 53 54 c = sbuf.pub_pbackfail('a'); 55 VERIFY( c == 'a' ); 56 c = sbuf.sbumpc(); 57 VERIFY( c == 'a' ); 58 59 c = sbuf.pub_pbackfail('x'); 60 VERIFY( c == 'x' ); 61 c = sbuf.sbumpc(); 62 VERIFY( c == 'x' ); 63 64 const int_type eof = traits_type::eof(); 65 c = sbuf.pub_pbackfail(eof); 66 VERIFY( c == traits_type::not_eof(eof) ); 67 c = sbuf.sgetc(); 68 VERIFY( c == 'x' ); 69} 70 71int main() 72{ 73 test01(); 74 return 0; 75} 76