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2005-02-25 Eric Blake <ebb9@byu.net> 

* libc/include/time.h (__tzrule_struct): Make offset long, since
        a 16-bit int overflows on a 12-hour offset.
        * libc/sys/linux/include/time.h: Ditto.
        * libc/time/mktime.c (mktime): Use new type of __tzrule.offset.
        * libc/time/mktm_r.c: Ditto.
        * libc/time/gettzinfo.c: Ditto.
        * libc/time/strftime.c (strftime): Fix '%x' to deal with negative
        years.  Fix '%z' to use long, not int.
This commit is contained in:
Jeff Johnston 2005-02-25 22:31:21 +00:00
parent 6d11044c63
commit 1139537a25
7 changed files with 42 additions and 22 deletions
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11
newlib/ChangeLog
View File

@ -1,3 +1,14 @@
2005-02-25 Eric Blake <ebb9@byu.net>
* libc/include/time.h (__tzrule_struct): Make offset long, since
a 16-bit int overflows on a 12-hour offset.
* libc/sys/linux/include/time.h: Ditto.
* libc/time/mktime.c (mktime): Use new type of __tzrule.offset.
* libc/time/mktm_r.c: Ditto.
* libc/time/gettzinfo.c: Ditto.
* libc/time/strftime.c (strftime): Fix '%x' to deal with negative
years. Fix '%z' to use long, not int.
2005-02-24 Ralf Corsepious <ralf.corsepius@rtems.org> 2005-02-24 Ralf Corsepious <ralf.corsepius@rtems.org>
* libm/common/s_fpclassify.c: Use __uint32_t instead of int to * libm/common/s_fpclassify.c: Use __uint32_t instead of int to

2
newlib/libc/include/time.h
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@ -79,7 +79,7 @@ typedef struct __tzrule_struct
int d; int d;
int s; int s;
time_t change; time_t change;
int offset; long offset; /* Match type of _timezone. */
} __tzrule_type; } __tzrule_type;
typedef struct __tzinfo_struct typedef struct __tzinfo_struct

2
newlib/libc/sys/linux/include/time.h
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@ -92,7 +92,7 @@ typedef struct __tzrule_struct
int d; int d;
int s; int s;
time_t change; time_t change;
int offset; long offset; /* Match type of _timezone. */
} __tzrule_type; } __tzrule_type;
typedef struct __tzinfo_struct typedef struct __tzinfo_struct

4
newlib/libc/time/gettzinfo.c
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@ -3,8 +3,8 @@
/* Shared timezone information for libc/time functions. */ /* Shared timezone information for libc/time functions. */
static __tzinfo_type tzinfo = {1, 0, static __tzinfo_type tzinfo = {1, 0,
{ {'J', 0, 0, 0, 0, (time_t)0, 0 }, { {'J', 0, 0, 0, 0, (time_t)0, 0L },
{'J', 0, 0, 0, 0, (time_t)0, 0 } {'J', 0, 0, 0, 0, (time_t)0, 0L }
} }
}; };

21
newlib/libc/time/mktime.c
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@ -211,9 +211,12 @@ mktime (tim_p)
{ {
/* calculate start of dst in dst local time and /* calculate start of dst in dst local time and
start of std in both std local time and dst local time */ start of std in both std local time and dst local time */
time_t startdst_dst = tz->__tzrule[0].change - tz->__tzrule[1].offset; time_t startdst_dst = tz->__tzrule[0].change
time_t startstd_dst = tz->__tzrule[1].change - tz->__tzrule[1].offset; - (time_t) tz->__tzrule[1].offset;
time_t startstd_std = tz->__tzrule[1].change - tz->__tzrule[0].offset; time_t startstd_dst = tz->__tzrule[1].change
- (time_t) tz->__tzrule[1].offset;
time_t startstd_std = tz->__tzrule[1].change
- (time_t) tz->__tzrule[0].offset;
/* if the time is in the overlap between dst and std local times */ /* if the time is in the overlap between dst and std local times */
if (tim >= startstd_std && tim < startstd_dst) if (tim >= startstd_std && tim < startstd_dst)
; /* we let user decide or leave as -1 */ ; /* we let user decide or leave as -1 */
@ -226,8 +229,12 @@ mktime (tim_p)
if ((isdst ^ tim_p->tm_isdst) == 1) if ((isdst ^ tim_p->tm_isdst) == 1)
{ {
/* we either subtract or add the difference between /* we either subtract or add the difference between
time zone offsets, depending on which way the user got it wrong */ time zone offsets, depending on which way the user got it
int diff = tz->__tzrule[0].offset - tz->__tzrule[1].offset; wrong. The diff is typically one hour, or 3600 seconds,
and should fit in a 16-bit int, even though offset
is a long to accomodate 12 hours. */
int diff = (int) (tz->__tzrule[0].offset
- tz->__tzrule[1].offset);
if (!isdst) if (!isdst)
diff = -diff; diff = -diff;
tim_p->tm_sec += diff; tim_p->tm_sec += diff;
@ -240,9 +247,9 @@ mktime (tim_p)
/* add appropriate offset to put time in gmt format */ /* add appropriate offset to put time in gmt format */
if (isdst == 1) if (isdst == 1)
tim += tz->__tzrule[1].offset; tim += (time_t) tz->__tzrule[1].offset;
else /* otherwise assume std time */ else /* otherwise assume std time */
tim += tz->__tzrule[0].offset; tim += (time_t) tz->__tzrule[0].offset;
/* reset isdst flag to what we have calculated */ /* reset isdst flag to what we have calculated */
tim_p->tm_isdst = isdst; tim_p->tm_isdst = isdst;

8
newlib/libc/time/mktm_r.c
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@ -95,7 +95,7 @@ _DEFUN (_mktm_r, (tim_p, res, is_gmtime),
if (!is_gmtime) if (!is_gmtime)
{ {
int offset; long offset;
int hours, mins, secs; int hours, mins, secs;
TZ_LOCK; TZ_LOCK;
@ -117,11 +117,11 @@ _DEFUN (_mktm_r, (tim_p, res, is_gmtime),
? tz->__tzrule[1].offset ? tz->__tzrule[1].offset
: tz->__tzrule[0].offset); : tz->__tzrule[0].offset);
hours = offset / SECSPERHOUR; hours = (int) (offset / SECSPERHOUR);
offset = offset % SECSPERHOUR; offset = offset % SECSPERHOUR;
mins = offset / SECSPERMIN; mins = (int) (offset / SECSPERMIN);
secs = offset % SECSPERMIN; secs = (int) (offset % SECSPERMIN);
res->tm_sec -= secs; res->tm_sec -= secs;
res->tm_min -= mins; res->tm_min -= mins;

16
newlib/libc/time/strftime.c
View File

@ -1,6 +1,7 @@
/* /*
* strftime.c * strftime.c
* Original Author: G. Haley * Original Author: G. Haley
* Additions from: Eric Blake
* *
* Places characters into the array pointed to by s as controlled by the string * Places characters into the array pointed to by s as controlled by the string
* pointed to by format. If the total number of resulting characters including * pointed to by format. If the total number of resulting characters including
@ -102,9 +103,9 @@ The last two digits of the week-based year, see specifier %G (from
o %G o %G
The week-based year. In the ISO 8601:2000 calendar, week 1 of the year The week-based year. In the ISO 8601:2000 calendar, week 1 of the year
includes January 4th, and begin on Mondays. Therefore, if January 1st, includes January 4th, and begin on Mondays. Therefore, if January 1st,
2nd, or 3rd falls on a Sunday, that day and earlier belong to week 53 2nd, or 3rd falls on a Sunday, that day and earlier belong to the last
of the previous year; and if December 29th, 30th, or 31st falls on week of the previous year; and if December 29th, 30th, or 31st falls
Monday, that day and later belong to week 1 of the next year. For on Monday, that day and later belong to week 1 of the next year. For
consistency with %Y, it always has at least four characters. consistency with %Y, it always has at least four characters.
Example: "%G" for Saturday 2nd January 1999 gives "1998", and for Example: "%G" for Saturday 2nd January 1999 gives "1998", and for
Tuesday 30th December 1997 gives "1998". [tm_year, tm_wday, tm_yday] Tuesday 30th December 1997 gives "1998". [tm_year, tm_wday, tm_yday]
@ -447,7 +448,8 @@ _DEFUN (strftime, (s, maxsize, format, tim_p),
{ {
sprintf (&s[count], "%.2d/%.2d/%.2d", sprintf (&s[count], "%.2d/%.2d/%.2d",
tim_p->tm_mon + 1, tim_p->tm_mday, tim_p->tm_mon + 1, tim_p->tm_mday,
(tim_p->tm_year % 100 + 100) % 100); tim_p->tm_year >= 0 ? tim_p->tm_year % 100
: abs (tim_p->tm_year + YEAR_BASE) % 100);
count += 8; count += 8;
} }
else else
@ -756,7 +758,7 @@ _DEFUN (strftime, (s, maxsize, format, tim_p),
{ {
if (count < maxsize - 5) if (count < maxsize - 5)
{ {
int offset; long offset;
__tzinfo_type *tz = __gettzinfo (); __tzinfo_type *tz = __gettzinfo ();
TZ_LOCK; TZ_LOCK;
/* The sign of this is exactly opposite the envvar TZ. We /* The sign of this is exactly opposite the envvar TZ. We
@ -764,8 +766,8 @@ _DEFUN (strftime, (s, maxsize, format, tim_p),
but have to use __tzrule for daylight savings. */ but have to use __tzrule for daylight savings. */
offset = -tz->__tzrule[tim_p->tm_isdst > 0].offset; offset = -tz->__tzrule[tim_p->tm_isdst > 0].offset;
TZ_UNLOCK; TZ_UNLOCK;
sprintf (&s[count], "%+03ld%.2d", offset / SECSPERHOUR, sprintf (&s[count], "%+03ld%.2ld", offset / SECSPERHOUR,
abs (offset / SECSPERMIN) % 60); labs (offset / SECSPERMIN) % 60L);
count += 5; count += 5;
} }
else else