aboutsummaryrefslogtreecommitdiffstats
path: root/zic/zic.c
diff options
context:
space:
mode:
Diffstat (limited to 'zic/zic.c')
-rw-r--r--zic/zic.c24
1 files changed, 19 insertions, 5 deletions
diff --git a/zic/zic.c b/zic/zic.c
index 71ab562cf342..a75d8c75e88c 100644
--- a/zic/zic.c
+++ b/zic/zic.c
@@ -3,7 +3,7 @@
** 2006-07-17 by Arthur David Olson.
*/
-static char elsieid[] = "@(#)zic.c 8.22";
+static char elsieid[] = "@(#)zic.c 8.24";
#include "private.h"
#include "locale.h"
@@ -1881,16 +1881,16 @@ const long gmtoff;
register int week;
if (rp->r_dycode == DC_DOWGEQ) {
- week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
- if ((week - 1) * DAYSPERWEEK + 1 != rp->r_dayofmonth)
+ if ((rp->r_dayofmonth % DAYSPERWEEK) != 1)
return -1;
+ week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
} else if (rp->r_dycode == DC_DOWLEQ) {
if (rp->r_dayofmonth == len_months[1][rp->r_month])
week = 5;
else {
- week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
- if (week * DAYSPERWEEK - 1 != rp->r_dayofmonth)
+ if ((rp->r_dayofmonth % DAYSPERWEEK) != 0)
return -1;
+ week = rp->r_dayofmonth / DAYSPERWEEK;
}
} else return -1; /* "cannot happen" */
(void) sprintf(result, "M%d.%d.%d",
@@ -2018,6 +2018,7 @@ const int zonecount;
register char * envvar;
register int max_abbr_len;
register int max_envvar_len;
+ register int prodstic; /* all rules are min to max */
max_abbr_len = 2 + max_format_len + max_abbrvar_len;
max_envvar_len = 2 * max_abbr_len + 5 * 9;
@@ -2032,6 +2033,7 @@ const int zonecount;
timecnt = 0;
typecnt = 0;
charcnt = 0;
+ prodstic = zonecount == 1;
/*
** Thanks to Earl Chew
** for noting the need to unconditionally initialize startttisstd.
@@ -2053,6 +2055,8 @@ const int zonecount;
updateminmax(rp->r_loyear);
if (rp->r_hiwasnum)
updateminmax(rp->r_hiyear);
+ if (rp->r_lowasnum || rp->r_hiwasnum)
+ prodstic = FALSE;
}
}
/*
@@ -2075,6 +2079,16 @@ wp = ecpyalloc(_("no POSIX environment variable for zone"));
if (max_year <= INT_MAX - YEARSPERREPEAT)
max_year += YEARSPERREPEAT;
else max_year = INT_MAX;
+ /*
+ ** Regardless of any of the above,
+ ** for a "proDSTic" zone which specifies that its rules
+ ** always have and always will be in effect,
+ ** we only need one cycle to define the zone.
+ */
+ if (prodstic) {
+ min_year = 1900;
+ max_year = min_year + YEARSPERREPEAT;
+ }
}
/*
** For the benefit of older systems,