1 /* Test of fseek() function.
2 Copyright (C) 2007 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
24 main (int argc, char **argv)
26 /* Assume stdin is non-empty and seekable iff argc > 1. */
27 int expected = argc > 1 ? 0 : -1;
28 if (fseek (stdin, 0, SEEK_CUR) != expected)
32 /* Test that fseek discards ungetc data. */
33 int ch = fgetc (stdin);
36 if (ungetc (ch ^ 0xff, stdin) != (ch ^ 0xff))
38 if (fseek (stdin, 0, SEEK_END))
40 if (fgetc (stdin) != EOF)
42 /* Test that fseek resets end-of-file marker. */
45 if (fseek (stdin, 0, SEEK_END))