// 2001-05-21 Benjamin Kosnik // Copyright (C) 2001, 2002, 2003, 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 // . // 27.8.1.4 Overridden virtual functions // { dg-require-fileio "" } #include #include #include // @require@ %-*.tst %-*.txt // @diff@ %-*.tst %*.txt const char name_01[] = "seekpos-2out.tst"; // file with data in it void test05() { using namespace std; using namespace __gnu_test; typedef filebuf::int_type int_type; typedef filebuf::pos_type pos_type; typedef filebuf::off_type off_type; typedef filebuf::traits_type traits_type; bool test __attribute__((unused)) = true; int_type c1; int_type c2; int_type c3; pos_type pt_1(off_type(-1)); pos_type pt_2(off_type(0)); pos_type pt_3; off_type off_1 = 0; off_type off_2 = 0; // seekpos // pubseekpos(pos_type sp, ios_base::openmode) // alters the stream position to sp // out { constraint_filebuf fb; fb.pubsetbuf(0, 0); fb.open(name_01, ios_base::out); VERIFY( fb.unbuffered() ); // beg pt_1 = fb.pubseekoff(78, ios_base::beg); off_1 = off_type(pt_1); VERIFY( off_1 > 0 ); c1 = fb.snextc(); //current in pointer +1 VERIFY( c1 == traits_type::eof() ); // cur pt_3 = fb.pubseekoff(0, ios_base::cur); fb.pubseekpos(pt_3); c2 = fb.sputc('\n'); //test current out pointer pt_3 = fb.pubseekoff(0, ios_base::cur); fb.pubseekpos(pt_3); c3 = fb.sgetc(); fb.pubsync(); //resets pointers pt_2 = fb.pubseekpos(pt_1); off_2 = off_type(pt_2); VERIFY( off_1 == off_2 ); c3 = fb.snextc(); //current in pointer +1 VERIFY( c2 != c3 ); VERIFY( c3 == traits_type::eof() ); // end pt_1 = fb.pubseekoff(0, ios_base::end); off_1 = off_type(pt_1); VERIFY( off_1 > off_2 ); fb.sputn("\nof the wonderful things he does!!\nok", 37); fb.pubsync(); VERIFY( fb.unbuffered() ); fb.close(); VERIFY( !fb.is_open() ); } } int main() { test05(); return 0; }