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Add comments about why errno is set to zero.

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This commit is contained in:
Bruce Momjian
2005-12-01 20:06:37 +00:00
parent 814acfcc3a
commit 277b2ea328
2 changed files with 24 additions and 24 deletions
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22
src/backend/utils/adt/datetime.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.162 2005/12/01 17:56:34 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.163 2005/12/01 20:06:37 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -1013,7 +1013,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
if (tzp == NULL)
return DTERR_BAD_FORMAT;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
val = strtol(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -1161,7 +1161,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
char *cp;
int val;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
val = strtol(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -1921,7 +1921,7 @@ DecodeTimeOnly(char **field, int *ftype, int nf,
break;
}
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
val = strtol(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -2465,14 +2465,14 @@ DecodeTime(char *str, int fmask, int *tmask, struct pg_tm * tm, fsec_t *fsec)
*tmask = DTK_TIME_M;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
tm->tm_hour = strtol(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp != ':')
return DTERR_BAD_FORMAT;
str = cp + 1;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
tm->tm_min = strtol(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -2486,7 +2486,7 @@ DecodeTime(char *str, int fmask, int *tmask, struct pg_tm * tm, fsec_t *fsec)
else
{
str = cp + 1;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
tm->tm_sec = strtol(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -2540,7 +2540,7 @@ DecodeNumber(int flen, char *str, bool haveTextMonth, int fmask,
*tmask = 0;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
val = strtol(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -2830,7 +2830,7 @@ DecodeTimezone(char *str, int *tzp)
if (*str != '+' && *str != '-')
return DTERR_BAD_FORMAT;
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
hr = strtol(str + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
@ -2838,7 +2838,7 @@ DecodeTimezone(char *str, int *tzp)
/* explicit delimiter? */
if (*cp == ':')
{
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
min = strtol(cp + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
@ -3085,7 +3085,7 @@ DecodeInterval(char **field, int *ftype, int nf, int *dtype, struct pg_tm * tm,
case DTK_DATE:
case DTK_NUMBER:
errno = 0;
errno = 0; /* avoid checking LONG_MIN/LONG_MAX */
val = strtol(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;