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1 // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
2
3 // Copyright (C) 2001-2024 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
27 const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
28
29 // libstdc++/9439, libstdc++/9425
30 // basic_filebuf<>::pbackfail calls basic_filebuf<>::seekoff, but
31 // fails to check the return value
32 void test09()
33 {
34 using namespace std;
35
36 filebuf fbuf;
37 fbuf.open(name_01, ios_base::in);
38 filebuf::int_type r = fbuf.sputbackc('a');
39 fbuf.close();
40
41 VERIFY( r == filebuf::traits_type::eof() );
42 }
43
44 int main()
45 {
46 test09();
47 return 0;
48 }