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* Makefile.in (localtime_CFLAGS): Define as -fwrapv since localtime 

code requires int overflows to be fully defined.
	* localtime.cc: Align a bit more to upstream code.
This commit is contained in:
Corinna Vinschen 2013-05-14 13:34:05 +00:00
parent ccd40e46d7
commit b39bb1802a
3 changed files with 26 additions and 43 deletions
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6
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,9 @@
2013-05-14 Corinna Vinschen <corinna@vinschen.de>
* Makefile.in (localtime_CFLAGS): Define as -fwrapv since localtime
code requires int overflows to be fully defined.
* localtime.cc: Align a bit more to upstream code.
2013-05-14 Corinna Vinschen <corinna@vinschen.de>
* grp.cc (get_groups): Convert to void function.

1
winsup/cygwin/Makefile.in
View File

@ -303,6 +303,7 @@ fhandler_zero_CFLAGS:=-fomit-frame-pointer
flock_CFLAGS:=-fomit-frame-pointer
grp_CFLAGS:=-fomit-frame-pointer
libstdcxx_wrapper_CFLAGS:=-fomit-frame-pointer
localtime_CFLAGS:=-fwrapv
malloc_CFLAGS:=-fomit-frame-pointer -O3
malloc_wrapper_CFLAGS:=-fomit-frame-pointer
miscfuncs_CFLAGS:=-fomit-frame-pointer

62
winsup/cygwin/localtime.cc
View File

@ -8,7 +8,7 @@
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
** 1996-06-05 by Arthur David Olson.
*/
/* Temporarily merged private.h and tzfile.h for ease of management - DJ */
@ -23,14 +23,13 @@
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)localtime.c 7.66";
static char elsieid[] = "@(#)localtime.c 8.17";
#endif /* !defined NOID */
#endif /* !defined lint */
/*
** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
** POSIX-style TZ environment variable handling from Guy Harris
** (guy@auspex.com).
** Leap second handling from Bradley White.
** POSIX-style TZ environment variable handling from Guy Harris.
*/
#define NO_ERROR_IN_DST_GAP
@ -171,7 +170,7 @@ static char privatehid[] = "@(#)private.h 7.48";
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
** 1996-06-05 by Arthur David Olson.
*/
/*
@ -273,7 +272,7 @@ struct tzhead {
** 138 years of Pacific Presidential Election time
** (where there are three time zone transitions every fourth year).
*/
#define TZ_MAX_TIMES 370
#define TZ_MAX_TIMES 1200
#endif /* !defined TZ_MAX_TIMES */
#ifndef TZ_MAX_TYPES
@ -283,7 +282,7 @@ struct tzhead {
#ifdef NOSOLAR
/*
** Must be at least 14 for Europe/Riga as of Jan 12 1995,
** as noted by Earl Chew <earl@hpato.aus.hp.com>.
** as noted by Earl Chew.
*/
#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
#endif /* !defined NOSOLAR */
@ -341,28 +340,6 @@ struct tzhead {
#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
#ifndef USG
/*
** Use of the underscored variants may cause problems if you move your code to
** certain System-V-based systems; for maximum portability, use the
** underscore-free variants. The underscored variants are provided for
** backward compatibility only; they may disappear from future versions of
** this file.
*/
#define SECS_PER_MIN SECSPERMIN
#define MINS_PER_HOUR MINSPERHOUR
#define HOURS_PER_DAY HOURSPERDAY
#define DAYS_PER_WEEK DAYSPERWEEK
#define DAYS_PER_NYEAR DAYSPERNYEAR
#define DAYS_PER_LYEAR DAYSPERLYEAR
#define SECS_PER_HOUR SECSPERHOUR
#define SECS_PER_DAY SECSPERDAY
#define MONS_PER_YEAR MONSPERYEAR
#endif /* !defined USG */
#endif /* !defined TZFILE_H */
#include "fcntl.h"
@ -517,7 +494,7 @@ static int tzload(timezone_t sp, const char * name,
static int tzparse(timezone_t sp, const char * name,
int lastditch);
static void tzset_unlocked(void);
static long leapcorr(time_t * timep);
static long leapcorr(const timezone_t sp, time_t * timep);
static timezone_t lclptr;
static timezone_t gmtptr;
@ -622,11 +599,11 @@ settzname (void)
#ifdef USG_COMPAT
if (ttisp->tt_isdst)
daylight = 1;
if (i == 0 || !ttisp->tt_isdst)
if (!ttisp->tt_isdst)
timezone = -(ttisp->tt_gmtoff);
#endif /* defined USG_COMPAT */
#ifdef ALTZONE
if (i == 0 || ttisp->tt_isdst)
if (ttisp->tt_isdst)
altzone = -(ttisp->tt_gmtoff);
#endif /* defined ALTZONE */
}
@ -1523,6 +1500,7 @@ tzsetwall (void)
lcl_is_set = lcl_setting;
if (lclptr == NULL) {
save_errno save;
lclptr = (timezone_t) calloc(1, sizeof *lclptr);
if (lclptr == NULL) {
settzname(); /* all we can do */
@ -1632,11 +1610,11 @@ tzset_unlocked(void)
return;
}
if (lcl_is_set > 0 && strncmp(lcl_TZname, name, sizeof(lcl_TZname) - 1) == 0)
if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
return;
lcl_is_set = (strlen(name) < sizeof (lcl_TZname)) ? lcl_from_environment : lcl_unset;
if (lcl_is_set != lcl_unset)
strlcpy(lcl_TZname, name, sizeof (lcl_TZname));
(void)strlcpy(lcl_TZname, name, sizeof (lcl_TZname));
if (lclptr == NULL) {
save_errno save;
@ -2490,13 +2468,11 @@ gtime(struct tm *const tmp)
*/
static long
leapcorr(time_t *timep)
leapcorr(const timezone_t sp, time_t *timep)
{
timezone_t sp;
struct lsinfo * lp;
int i;
sp = lclptr;
i = sp->leapcnt;
while (--i >= 0) {
lp = &sp->lsis[i];
@ -2512,7 +2488,7 @@ time2posix(time_t t)
time_t result;
tzset_guard.init ("tzset_guard")->acquire ();
tzset_unlocked();
result = t - leapcorr(&t);
result = t - leapcorr(lclptr, &t);
tzset_guard.release ();
return (result);
}
@ -2531,12 +2507,12 @@ posix2time(time_t t)
** hit, the corresponding time doesn't exist,
** so we return an adjacent second.
*/
x = (time_t)(t + leapcorr(&t));
y = (time_t)(x - leapcorr(&x));
x = (time_t)(t + leapcorr(lclptr, &t));
y = (time_t)(x - leapcorr(lclptr, &x));
if (y < t) {
do {
x++;
y = (time_t)(x - leapcorr(&x));
y = (time_t)(x - leapcorr(lclptr, &x));
} while (y < t);
if (t != y) {
return x - 1;
@ -2544,7 +2520,7 @@ posix2time(time_t t)
} else if (y > t) {
do {
--x;
y = (time_t)(x - leapcorr(&x));
y = (time_t)(x - leapcorr(lclptr, &x));
} while (y > t);
if (t != y) {
return x + 1;