1 /* Test of fputc() function.
2 Copyright (C) 2011 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, or (at your option)
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, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
22 #include "signature.h"
23 SIGNATURE_CHECK (fputc, int, (int, FILE *));
32 main (int argc, char **argv)
34 const char *filename = "test-fputc.txt";
36 /* Test that fputc() on an unbuffered stream sets errno if someone else
37 closes the stream fd behind the back of stdio. */
39 FILE *fp = fopen (filename, "w");
41 setvbuf (fp, NULL, _IONBF, 0);
42 ASSERT (close (fileno (fp)) == 0);
44 ASSERT (fputc ('x', fp) == EOF);
45 ASSERT (errno == EBADF);
49 /* Test that fputc() on an unbuffered stream sets errno if the stream
50 was constructed with an invalid file descriptor. */
52 FILE *fp = fdopen (-1, "w");
55 setvbuf (fp, NULL, _IONBF, 0);
57 ASSERT (fputc ('x', fp) == EOF);
58 ASSERT (errno == EBADF);
63 FILE *fp = fdopen (99, "w");
66 setvbuf (fp, NULL, _IONBF, 0);
68 ASSERT (fputc ('x', fp) == EOF);
69 ASSERT (errno == EBADF);