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Diffstat (limited to 'timezone/zic.c')
-rw-r--r--timezone/zic.c89
1 files changed, 52 insertions, 37 deletions
diff --git a/timezone/zic.c b/timezone/zic.c
index 9bb8662e55..d855475f9f 100644
--- a/timezone/zic.c
+++ b/timezone/zic.c
@@ -1,4 +1,10 @@
-static char elsieid[] = "@(#)zic.c 7.116";
+static char elsieid[] = "@(#)zic.c 7.118";
+
+/*
+** Regardless of the type of time_t, we do our work using this type.
+*/
+
+typedef int zic_t;
#include "private.h"
#include "locale.h"
@@ -50,7 +56,7 @@ struct rule {
const char * r_abbrvar; /* variable part of abbreviation */
int r_todo; /* a rule to do (used in outzone) */
- time_t r_temp; /* used in outzone */
+ zic_t r_temp; /* used in outzone */
};
/*
@@ -76,7 +82,7 @@ struct zone {
int z_nrules;
struct rule z_untilrule;
- time_t z_untiltime;
+ zic_t z_untiltime;
};
extern int getopt P((int argc, char * const argv[],
@@ -85,10 +91,10 @@ extern int link P((const char * fromname, const char * toname));
extern char * optarg;
extern int optind;
-static void addtt P((time_t starttime, int type));
+static void addtt P((zic_t starttime, int type));
static int addtype P((long gmtoff, const char * abbr, int isdst,
int ttisstd, int ttisgmt));
-static void leapadd P((time_t t, int positive, int rolling, int count));
+static void leapadd P((zic_t t, int positive, int rolling, int count));
static void adjleap P((void));
static void associate P((void));
static int ciequal P((const char * ap, const char * bp));
@@ -121,13 +127,13 @@ static long oadd P((long t1, long t2));
static void outzone P((const struct zone * zp, int ntzones));
static void puttzcode P((long code, FILE * fp));
static int rcomp P((const void * leftp, const void * rightp));
-static time_t rpytime P((const struct rule * rp, int wantedy));
+static zic_t rpytime P((const struct rule * rp, int wantedy));
static void rulesub P((struct rule * rp,
const char * loyearp, const char * hiyearp,
const char * typep, const char * monthp,
const char * dayp, const char * timep));
static void setboundaries P((void));
-static time_t tadd P((time_t t1, long t2));
+static zic_t tadd P((zic_t t1, long t2));
static void usage P((void));
static void writezone P((const char * name));
static int yearistype P((int year, const char * type));
@@ -141,10 +147,10 @@ static int errors;
static const char * filename;
static int leapcnt;
static int linenum;
-static time_t max_time;
+static zic_t max_time;
static int max_year;
static int max_year_representable;
-static time_t min_time;
+static zic_t min_time;
static int min_year;
static int min_year_representable;
static int noise;
@@ -334,7 +340,7 @@ static const int len_years[2] = {
};
static struct attype {
- time_t at;
+ zic_t at;
unsigned char type;
} attypes[TZ_MAX_TIMES];
static long gmtoffs[TZ_MAX_TYPES];
@@ -343,7 +349,7 @@ static unsigned char abbrinds[TZ_MAX_TYPES];
static char ttisstds[TZ_MAX_TYPES];
static char ttisgmts[TZ_MAX_TYPES];
static char chars[TZ_MAX_CHARS];
-static time_t trans[TZ_MAX_LEAPS];
+static zic_t trans[TZ_MAX_LEAPS];
static long corr[TZ_MAX_LEAPS];
static char roll[TZ_MAX_LEAPS];
@@ -629,7 +635,7 @@ const char * const tofile;
register char * symlinkcontents = NULL;
while ((s = strchr(s+1, '/')) != NULL)
symlinkcontents = ecatalloc(symlinkcontents, "../");
- symlinkcontents = ecatalloc(symlinkcontents, fromname);
+ symlinkcontents = ecatalloc(symlinkcontents, fromfile);
result = unlink(toname);
if (result != 0 && errno != ENOENT) {
@@ -676,25 +682,36 @@ warning(_("hard link failed, symbolic link used"));
*/
#define MAX_BITS_IN_FILE 32
-#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
+#define TIME_T_BITS_IN_FILE ((TYPE_BIT(zic_t) < MAX_BITS_IN_FILE) ? \
+ TYPE_BIT(zic_t) : MAX_BITS_IN_FILE)
static void
setboundaries P((void))
{
- if (TYPE_SIGNED(time_t)) {
- min_time = ~ (time_t) 0;
- min_time <<= TIME_T_BITS_IN_FILE - 1;
- max_time = ~ (time_t) 0 - min_time;
+ register int i;
+
+ if (TYPE_SIGNED(zic_t)) {
+ min_time = -1;
+ for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
+ min_time *= 2;
+ max_time = -(min_time + 1);
if (sflag)
min_time = 0;
} else {
min_time = 0;
max_time = 2 - sflag;
- max_time <<= TIME_T_BITS_IN_FILE - 1;
+ for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
+ max_time *= 2;
--max_time;
}
- min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
- max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
+ {
+ time_t t;
+
+ t = (time_t) min_time;
+ min_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
+ t = (time_t) max_time;
+ max_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
+ }
min_year_representable = min_year;
max_year_representable = max_year;
}
@@ -1120,7 +1137,7 @@ const int nfields;
register int i, j;
int year, month, day;
long dayoff, tod;
- time_t t;
+ zic_t t;
if (nfields != LEAP_FIELDS) {
error(_("wrong number of fields on Leap line"));
@@ -1164,7 +1181,7 @@ const int nfields;
return;
}
dayoff = oadd(dayoff, eitol(day - 1));
- if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
+ if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
error(_("time before zero"));
return;
}
@@ -1176,7 +1193,7 @@ const int nfields;
error(_("time too large"));
return;
}
- t = (time_t) dayoff * SECSPERDAY;
+ t = (zic_t) dayoff * SECSPERDAY;
tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
cp = fields[LP_CORR];
{
@@ -1438,7 +1455,7 @@ const char * const name;
register int i, j;
static char * fullname;
static struct tzhead tzh;
- time_t ats[TZ_MAX_TIMES];
+ zic_t ats[TZ_MAX_TIMES];
unsigned char types[TZ_MAX_TIMES];
/*
@@ -1603,7 +1620,7 @@ const int zonecount;
register struct rule * rp;
register int i, j;
register int usestart, useuntil;
- register time_t starttime, untiltime;
+ register zic_t starttime, untiltime;
register long gmtoff;
register long stdoff;
register int year;
@@ -1672,7 +1689,7 @@ const int zonecount;
}
for ( ; ; ) {
register int k;
- register time_t jtime, ktime;
+ register zic_t jtime, ktime;
register long offset;
char buf[BUFSIZ];
@@ -1784,7 +1801,7 @@ error(_("can't determine time zone abbreviation to use just after until time"));
static void
addtt(starttime, type)
-const time_t starttime;
+const zic_t starttime;
int type;
{
if (starttime <= min_time ||
@@ -1868,7 +1885,7 @@ const int ttisgmt;
static void
leapadd(t, positive, rolling, count)
-const time_t t;
+const zic_t t;
const int positive;
const int rolling;
int count;
@@ -2056,12 +2073,12 @@ const long t2;
return t;
}
-static time_t
+static zic_t
tadd(t1, t2)
-const time_t t1;
+const zic_t t1;
const long t2;
{
- register time_t t;
+ register zic_t t;
if (t1 == max_time && t2 > 0)
return max_time;
@@ -2080,14 +2097,14 @@ const long t2;
** 1970, 00:00 LOCAL time - in that year that the rule refers to.
*/
-static time_t
+static zic_t
rpytime(rp, wantedy)
register const struct rule * const rp;
register const int wantedy;
{
register int y, m, i;
register long dayoff; /* with a nod to Margaret O. */
- register time_t t;
+ register zic_t t;
if (wantedy == INT_MIN)
return min_time;
@@ -2154,15 +2171,13 @@ register const int wantedy;
warning(_("rule goes past start/end of month--will not work with pre-2004 versions of zic"));
}
}
- if (dayoff < 0 && !TYPE_SIGNED(time_t))
+ if (dayoff < 0 && !TYPE_SIGNED(zic_t))
return min_time;
if (dayoff < min_time / SECSPERDAY)
return min_time;
if (dayoff > max_time / SECSPERDAY)
return max_time;
- t = (time_t) dayoff * SECSPERDAY;
- if (t > 0 && max_time - t < rp->r_tod)
- return max_time;
+ t = (zic_t) dayoff * SECSPERDAY;
return tadd(t, rp->r_tod);
}
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