mirror of
https://git.savannah.gnu.org/git/gnulib.git
synced 2026-10-24 00:48:56 +03:00
40edc7743b
Instead of ‘... (char *) "abc" ...’, which is a bit confusing as "abc" is already of type char *, use ‘static char const s[] = "abc"; ... (char *) s .... This pacifices -Wuseless-cast. * lib/boot-time.c (get_boot_time_uncached): * lib/time_rz.c (save_abbr): * tests/test-posix_spawn-chdir.c (test): * tests/test-posix_spawn-fchdir.c (test): * tests/test-unsetenv.c (main): Redo with named string as described above.
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* Tests of unsetenv.
|
|
Copyright (C) 2009-2026 Free Software Foundation, Inc.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Eric Blake <ebb9@byu.net>, 2009. */
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "signature.h"
|
|
SIGNATURE_CHECK (unsetenv, int, (char const *));
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "macros.h"
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
/* Static to pacify gcc -Wanalyzer-putenv-of-auto-var. */
|
|
static char entry[] = "b=2";
|
|
|
|
/* Test removal when multiple entries present. */
|
|
static char const a_equals_1[] = "a=1";
|
|
ASSERT (putenv ((char *) a_equals_1) == 0);
|
|
ASSERT (putenv (entry) == 0);
|
|
entry[0] = 'a'; /* Unspecified what getenv("a") would be at this point. */
|
|
ASSERT (unsetenv ("a") == 0); /* Both entries will be removed. */
|
|
ASSERT (getenv ("a") == NULL);
|
|
ASSERT (unsetenv ("a") == 0);
|
|
|
|
/* Required to fail with EINVAL. */
|
|
errno = 0;
|
|
ASSERT (unsetenv ("") == -1);
|
|
ASSERT (errno == EINVAL);
|
|
errno = 0;
|
|
ASSERT (unsetenv ("a=b") == -1);
|
|
ASSERT (errno == EINVAL);
|
|
#if 0
|
|
/* glibc and gnulib's implementation guarantee this, but POSIX no
|
|
longer requires it: https://austingroupbugs.net/view.php?id=185 */
|
|
errno = 0;
|
|
ASSERT (unsetenv (NULL) == -1);
|
|
ASSERT (errno == EINVAL);
|
|
#endif
|
|
|
|
return test_exit_status;
|
|
}
|