diff options
Diffstat (limited to 'src/backend/utils/adt/date.c')
| -rw-r--r-- | src/backend/utils/adt/date.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c index c4da10d47a9..56c7746c11f 100644 --- a/src/backend/utils/adt/date.c +++ b/src/backend/utils/adt/date.c @@ -3083,10 +3083,11 @@ timetz_zone(PG_FUNCTION_ARGS) result = (TimeTzADT *) palloc(sizeof(TimeTzADT)); result->time = t->time + (t->zone - tz) * USECS_PER_SEC; + /* C99 modulo has the wrong sign convention for negative input */ while (result->time < INT64CONST(0)) result->time += USECS_PER_DAY; - while (result->time >= USECS_PER_DAY) - result->time -= USECS_PER_DAY; + if (result->time >= USECS_PER_DAY) + result->time %= USECS_PER_DAY; result->zone = tz; @@ -3116,10 +3117,11 @@ timetz_izone(PG_FUNCTION_ARGS) result = (TimeTzADT *) palloc(sizeof(TimeTzADT)); result->time = time->time + (time->zone - tz) * USECS_PER_SEC; + /* C99 modulo has the wrong sign convention for negative input */ while (result->time < INT64CONST(0)) result->time += USECS_PER_DAY; - while (result->time >= USECS_PER_DAY) - result->time -= USECS_PER_DAY; + if (result->time >= USECS_PER_DAY) + result->time %= USECS_PER_DAY; result->zone = tz; |