1 /* Check that gettimeofday does not clobber errno.
2    Copyright (C) 2021-2022 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 #include <errno.h>
20 #include <stddef.h>
21 #include <support/check.h>
22 #include <sys/time.h>
23 
24 static int
do_test(void)25 do_test (void)
26 {
27   for (int original_errno = 0; original_errno < 2; ++original_errno)
28     {
29       errno = original_errno;
30       struct timeval tv;
31       gettimeofday (&tv, NULL);
32       TEST_COMPARE (errno, original_errno);
33     }
34   return 0;
35 }
36 
37 #include <support/test-driver.c>
38