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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 // 27.8.1.4 Overridden virtual functions
24 #include <testsuite_hooks.h>
25 #include <testsuite_io.h>
27 // @require@ %-*.tst %-*.txt
28 // @diff@ %-*.tst %*.txt
30 const char name_01
[] = "sgetc.txt"; // file with data in it
32 // Test overloaded virtual functions.
36 using namespace __gnu_test
;
37 typedef std::filebuf::int_type int_type
;
38 typedef filebuf::traits_type traits_type
;
43 // int_type sputbackc(char_type c)
44 // if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail
45 // otherwise decrements in_cur and returns *gptr()
49 constraint_filebuf fb_01
; // in
50 fb_01
.open(name_01
, ios::in
);
51 VERIFY( !fb_01
.write_position() );
54 c2
= fb_01
.sputbackc('/');
64 c2
= fb_01
.sputbackc('a');
70 fb_01
.pubseekoff(5, ios_base::beg
, ios_base::in
);
76 c2
= fb_01
.sputbackc('b');
83 VERIFY( !fb_01
.write_position() );
84 VERIFY( fb_01
.read_position() );