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rcs_set_tz: Use timegm() to parse broken-down UTC

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We used to use mktime() (which expects local time not UTC) and
manually adjust the time zone, but this did not take DST into
account.  From Tomas Rippl
This commit is contained in:
millert
2025-09-15 19:37:35 +00:00
parent 03a308bae1
commit 0ce4db6fd2
1 changed files with 3 additions and 3 deletions
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6
usr.bin/rcs/rcstime.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: rcstime.c,v 1.6 2016/08/26 09:02:54 guenther Exp $ */
/* $OpenBSD: rcstime.c,v 1.7 2025/09/15 19:37:35 millert Exp $ */
/*
* Copyright (c) 2006 Joris Vink <joris@openbsd.org>
* All rights reserved.
@@ -42,9 +42,9 @@ rcs_set_tz(char *tz, struct rcs_delta *rdp, struct tm *tb)
time_t now;
if (!strcmp(tz, "LT")) {
now = mktime(&rdp->rd_date);
/* rd_date is stored in UTC, convert to local time. */
now = timegm(&rdp->rd_date);
ltb = localtime(&now);
ltb->tm_hour += ((int)ltb->tm_gmtoff/3600);
memcpy(tb, ltb, sizeof(*tb));
} else {
pos = 0;