1// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> 2 3// Copyright (C) 2001, 2002, 2003, 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// 27.8.1.4 Overridden virtual functions 21 22// { dg-require-fileio "" } 23 24#include <fstream> 25#include <testsuite_hooks.h> 26#include <testsuite_io.h> 27 28// @require@ %-*.tst %-*.txt 29// @diff@ %-*.tst %*.txt 30 31const char name_01[] = "sgetc.txt"; // file with data in it 32 33// Test overloaded virtual functions. 34void test01() 35{ 36 using namespace std; 37 using namespace __gnu_test; 38 typedef std::filebuf::int_type int_type; 39 typedef filebuf::traits_type traits_type; 40 41 bool test __attribute__((unused)) = true; 42 int_type c1, c2, c3; 43 44 // int_type sungetc() 45 // if in_cur not avail, return pbackfail(), else decrement and 46 // return to_int_type(*gptr()) 47 48 // in 49 { 50 constraint_filebuf fb_01; 51 fb_01.pubsetbuf(0, 0); 52 fb_01.open(name_01, ios::in); 53 VERIFY( fb_01.unbuffered() ); 54 c1 = fb_01.sbumpc(); 55 VERIFY( c1 == '/' ); 56 c2 = fb_01.sungetc(); 57 VERIFY( c2 == c1 ); 58 c3 = fb_01.sgetc(); 59 VERIFY( c3 == c2 ); 60 fb_01.pubseekoff(2, ios_base::beg, ios_base::in); 61 c1 = fb_01.sgetc(); 62 VERIFY( c1 == ' ' ); 63 c2 = fb_01.sungetc(); 64 VERIFY( c2 == traits_type::not_eof(traits_type::eof()) ); 65 VERIFY( fb_01.unbuffered() ); 66 } 67} 68 69int main() 70{ 71 test01(); 72 return 0; 73} 74