mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
35141f304e
The daylight variable is supposed to be set to 1 if DST is ever in use for the current time zone. But __tzfile_read used to do this: __daylight = rule_stdoff != rule_dstoff; This check can fail to set __daylight to 1 if the DST and non-DST offsets happen to be the same.
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* Check that daylight is set if the last DST transition did not change offset.
|
|
Copyright (C) 2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <support/check.h>
|
|
#include <time.h>
|
|
|
|
/* Set the specified time zone with error checking. */
|
|
static void
|
|
set_timezone (const char *name)
|
|
{
|
|
TEST_VERIFY (setenv ("TZ", name, 1) == 0);
|
|
errno = 0;
|
|
tzset ();
|
|
TEST_COMPARE (errno, 0);
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
/* Test zone based on tz-2022g version of Africa/Tripoli. The last
|
|
DST transition coincided with a change in the standard time
|
|
offset, effectively making it a no-op.
|
|
|
|
Africa/Tripoli Thu Oct 24 23:59:59 2013 UT
|
|
= Fri Oct 25 01:59:59 2013 CEST isdst=1 gmtoff=7200
|
|
Africa/Tripoli Fri Oct 25 00:00:00 2013 UT
|
|
= Fri Oct 25 02:00:00 2013 EET isdst=0 gmtoff=7200
|
|
*/
|
|
set_timezone ("XT6");
|
|
TEST_VERIFY (daylight != 0);
|
|
TEST_COMPARE (timezone, -7200);
|
|
|
|
/* Check that localtime re-initializes the two variables. */
|
|
daylight = timezone = 17;
|
|
time_t t = 844034401;
|
|
struct tm *tm = localtime (&t);
|
|
TEST_VERIFY (daylight != 0);
|
|
TEST_COMPARE (timezone, -7200);
|
|
TEST_COMPARE (tm->tm_year, 96);
|
|
TEST_COMPARE (tm->tm_mon, 8);
|
|
TEST_COMPARE (tm->tm_mday, 29);
|
|
TEST_COMPARE (tm->tm_hour, 23);
|
|
TEST_COMPARE (tm->tm_min, 0);
|
|
TEST_COMPARE (tm->tm_sec, 1);
|
|
TEST_COMPARE (tm->tm_gmtoff, 3600);
|
|
TEST_COMPARE (tm->tm_isdst, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|