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* libc/time/mktm_r.c: (__tzcalc_limits) Fix Julian day calculation.

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* libc/time/mktime.c: (mktime) Fix tm_yday, tm_mday updating when
	timezone causes roll over.
This commit is contained in:
Corinna Vinschen 2011-10-11 11:28:05 +00:00
parent eefc33184a
commit f13f2da4ee
3 changed files with 40 additions and 13 deletions
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6
newlib/ChangeLog
View file

@ -1,3 +1,9 @@
2011-10-11 Steven Abner <pheonix@zoomtown.com>
* libc/time/mktm_r.c: (__tzcalc_limits) Fix Julian day calculation.
* libc/time/mktime.c: (mktime) Fix tm_yday, tm_mday updating when
timezone causes roll over.
2011-10-10 Nick Clifton <nickc@redhat.com>
* libc/sys/arm/crt0.S: Synchronise with libgloss version.

40
newlib/libc/time/mktime.c
View file

@ -178,29 +178,22 @@ _DEFUN(mktime, (tim_p),
/* compute day of the year */
tim_p->tm_yday = days;
if (tim_p->tm_year > 10000
|| tim_p->tm_year < -10000)
{
if (tim_p->tm_year > 10000 || tim_p->tm_year < -10000)
return (time_t) -1;
}
/* compute days in other years */
if (tim_p->tm_year > 70)
if ((year = tim_p->tm_year) > 70)
{
for (year = 70; year < tim_p->tm_year; year++)
days += _DAYS_IN_YEAR (year);
}
else if (tim_p->tm_year < 70)
else if (year < 70)
{
for (year = 69; year > tim_p->tm_year; year--)
days -= _DAYS_IN_YEAR (year);
days -= _DAYS_IN_YEAR (year);
}
/* compute day of the week */
if ((tim_p->tm_wday = (days + 4) % 7) < 0)
tim_p->tm_wday += 7;
/* compute total seconds */
tim += (days * _SEC_IN_DAY);
@ -247,8 +240,29 @@ _DEFUN(mktime, (tim_p),
if (!isdst)
diff = -diff;
tim_p->tm_sec += diff;
validate_structure (tim_p);
tim += diff; /* we also need to correct our current time calculation */
int mday = tim_p->tm_mday;
validate_structure (tim_p);
mday = tim_p->tm_mday - mday;
/* roll over occurred */
if (mday) {
/* compensate for month roll overs */
if (mday > 1)
mday = -1;
else if (mday < -1)
mday = 1;
/* update days for wday calculation */
days += mday;
/* handle yday */
if ((tim_p->tm_yday += mday) < 0) {
--year;
tim_p->tm_yday = _DAYS_IN_YEAR(year) - 1;
} else {
mday = _DAYS_IN_YEAR(year);
if (tim_p->tm_yday > (mday - 1))
tim_p->tm_yday -= mday;
}
}
}
}
}
@ -265,5 +279,9 @@ _DEFUN(mktime, (tim_p),
/* reset isdst flag to what we have calculated */
tim_p->tm_isdst = isdst;
/* compute day of the week */
if ((tim_p->tm_wday = (days + 4) % 7) < 0)
tim_p->tm_wday += 7;
return tim;
}

7
newlib/libc/time/mktm_r.c
View file

@ -216,10 +216,13 @@ _DEFUN (__tzcalc_limits, (year),
for (i = 0; i < 2; ++i)
{
if (tz->__tzrule[i].ch == 'J')
if (tz->__tzrule[i].ch == 'J') {
/* The Julian day n (1 <= n <= 365). */
days = year_days + tz->__tzrule[i].d +
(isleap(year) && tz->__tzrule[i].d >= 60);
else if (tz->__tzrule[i].ch == 'D')
/* Convert to yday */
--days;
} else if (tz->__tzrule[i].ch == 'D')
days = year_days + tz->__tzrule[i].d;
else
{