1 /* Regression test for bug 11319.
2 Copyright (C) 2018-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #define _GNU_SOURCE 1
20
21 #include <fcntl.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24
25 #include <support/check.h>
26 #include <support/temp_file.h>
27 #include <support/xunistd.h>
28
29 static int
do_test(void)30 do_test (void)
31 {
32 char *tempfile;
33 int fd;
34
35 /* Create a temporary file and open it in read-only mode. */
36 TEST_VERIFY_EXIT (create_temp_file ("tst-bz11319", &tempfile));
37 fd = xopen (tempfile, O_RDONLY, 0660);
38
39 /* Try and write to the temporary file to intentionally fail, then
40 check that dprintf (or __dprintf_chk) return EOF. */
41 TEST_COMPARE (dprintf (fd, "%d", 0), EOF);
42
43 xclose (fd);
44 free (tempfile);
45
46 return 0;
47 }
48
49 #include <support/test-driver.c>
50