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diff --git a/sysdeps/posix/gettimeofday.c b/sysdeps/posix/gettimeofday.c
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+/* Copyright (C) 1991, 1992, 1994, 1995 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/time.h>
+
+#ifndef HAVE_GNU_LD
+#define __daylight daylight
+#define __timezone timezone
+#define __tzname tzname
+#endif
+
+
+/* Get the current time of day and timezone information,
+ putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
+ Returns 0 on success, -1 on errors. */
+int
+DEFUN(__gettimeofday, (tv, tz),
+ struct timeval *tv AND struct timezone *tz)
+{
+ if (tv == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ tv->tv_sec = (long int) time ((time_t *) NULL);
+ tv->tv_usec = 0L;
+
+ if (tz != NULL)
+ {
+ CONST time_t timer = tv->tv_sec;
+ CONST struct tm *tm;
+
+ CONST long int save_timezone = __timezone;
+ CONST long int save_daylight = __daylight;
+ char *save_tzname[2];
+ save_tzname[0] = __tzname[0];
+ save_tzname[1] = __tzname[1];
+
+ tm = localtime (&timer);
+
+ tz->tz_minuteswest = __timezone / 60;
+ tz->tz_dsttime = __daylight;
+
+ __timezone = save_timezone;
+ __daylight = save_daylight;
+ __tzname[0] = save_tzname[0];
+ __tzname[1] = save_tzname[1];
+
+ if (tm == NULL)
+ return -1;
+ }
+
+ return 0;
+}
+
+weak_alias (__gettimeofday, gettimeofday)