1// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> 2 3// Copyright (C) 2001, 2002, 2003 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// 27.8.1.4 Overridden virtual functions 22 23#include <fstream> 24#include <testsuite_hooks.h> 25#include <testsuite_io.h> 26 27// @require@ %-*.tst %-*.txt 28// @diff@ %-*.tst %*.txt 29 30const char name_01[] = "tmp_sungetc_2out.tst"; // empty file, need to create 31 32// Test overloaded virtual functions. 33void test01() 34{ 35 using namespace std; 36 using namespace __gnu_test; 37 typedef std::filebuf::int_type int_type; 38 typedef filebuf::traits_type traits_type; 39 40 bool test __attribute__((unused)) = true; 41 int_type c1, c2; 42 43 // int_type sungetc() 44 // if in_cur not avail, return pbackfail(), else decrement and 45 // return to_int_type(*gptr()) 46 47 // out 48 { 49 constraint_filebuf fb_01; // out 50 fb_01.pubsetbuf(0, 0); 51 fb_01.open(name_01, ios::out | ios::trunc); 52 VERIFY( fb_01.unbuffered() ); 53 VERIFY( !fb_01.read_position() ); 54 c1 = fb_01.sgetc(); 55 VERIFY( c1 == traits_type::eof() ); 56 c2 = fb_01.sungetc(); 57 VERIFY( c2 == traits_type::eof() ); 58 fb_01.sbumpc(); 59 c1 = fb_01.sbumpc(); 60 c2 = fb_01.sungetc(); 61 VERIFY( c1 == c2 ); 62 VERIFY( fb_01.unbuffered() ); 63 VERIFY( !fb_01.read_position() ); 64 } 65} 66 67int main() 68{ 69 test01(); 70 return 0; 71} 72