1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
3 // Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
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)
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.
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,
21 // 27.8.1.4 Overridden virtual functions
23 // { dg-require-fileio "" }
26 #include <testsuite_hooks.h>
27 #include <testsuite_io.h>
29 // @require@ %-*.tst %-*.txt
30 // @diff@ %-*.tst %*.txt
32 const char name_01[] = "sgetc.txt"; // file with data in it
34 // Test overloaded virtual functions.
38 using namespace __gnu_test;
39 typedef std::filebuf::int_type int_type;
40 typedef filebuf::traits_type traits_type;
42 bool test __attribute__((unused)) = true;
45 // int_type sputbackc(char_type c)
46 // if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail
47 // otherwise decrements in_cur and returns *gptr()
51 constraint_filebuf fb_01; // in
52 fb_01.pubsetbuf(0, 0);
53 fb_01.open(name_01, ios::in);
54 VERIFY( fb_01.unbuffered() );
57 c2 = fb_01.sputbackc('/');
67 c2 = fb_01.sputbackc('a');
73 fb_01.pubseekoff(5, ios_base::beg, ios_base::in);
79 c2 = fb_01.sputbackc('b');
86 VERIFY( fb_01.unbuffered() );