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Fix portability issues in recently added make_timestamp/make_interval code.

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Explicitly reject infinity/NaN inputs, rather than just assuming that
something else will do it for us.  Per buildfarm.

While at it, make some over-parenthesized and under-legible code
more readable.
This commit is contained in:
Tom Lane 2014-03-05 16:42:18 -05:00
parent 8cf0ad1ea3
commit f1ba94bcd9
1 changed files with 21 additions and 13 deletions
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34
src/backend/utils/adt/timestamp.c
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@ -597,8 +597,14 @@ make_timestamp_internal(int year, int month, int day,
date = date2j(tm.tm_year, tm.tm_mon, tm.tm_mday) - POSTGRES_EPOCH_JDATE;
/* This should match the checks in DecodeTimeOnly */
/*
* This should match the checks in DecodeTimeOnly, except that since we're
* dealing with a float "sec" value, we also explicitly reject NaN. (An
* infinity input should get rejected by the range comparisons, but we
* can't be sure how those will treat a NaN.)
*/
if (hour < 0 || min < 0 || min > MINS_PER_HOUR - 1 ||
isnan(sec) ||
sec < 0 || sec > SECS_PER_MINUTE ||
hour > HOURS_PER_DAY ||
/* test for > 24:00:00 */
@ -1463,23 +1469,25 @@ make_interval(PG_FUNCTION_ARGS)
double secs = PG_GETARG_FLOAT8(6);
Interval *result;
/*
* Reject out-of-range inputs. We really ought to check the integer
* inputs as well, but it's not entirely clear what limits to apply.
*/
if (isinf(secs) || isnan(secs))
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("interval out of range")));
result = (Interval *) palloc(sizeof(Interval));
result->month = years * MONTHS_PER_YEAR + months;
result->day = weeks * 7 + days;
#ifdef HAVE_INT64_TIMESTAMP
result->time = ((((hours * INT64CONST(60)) +
mins) * INT64CONST(60)) +
secs) * USECS_PER_SEC;
#else
result->time = (((hours * (double) MINS_PER_HOUR) +
mins) * (double) SECS_PER_MINUTE) +
secs;
#endif
secs += hours * (double) SECS_PER_HOUR + mins * (double) SECS_PER_MINUTE;
#ifdef NOT_USED
/* this is a no-op for negative typmods */
AdjustIntervalForTypmod(result, -1);
#ifdef HAVE_INT64_TIMESTAMP
result->time = (int64) (secs * USECS_PER_SEC);
#else
result->time = secs;
#endif
PG_RETURN_INTERVAL_P(result);