Reject out-of-range dates in to_date().

tglsfdc · tglsfdc · commit 0471b013aab8 · 2013-01-14T15:20:02.000-05:00
Dates outside the supported range could be entered, but would not print
reasonably, and operations such as conversion to timestamp wouldn't behave
sanely either.  Since this has the potential to result in undumpable table
data, it seems worth back-patching.

Hitoshi Harada
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
@@ -3322,6 +3322,12 @@ to_date(PG_FUNCTION_ARGS)
 
 	do_to_timestamp(date_txt, fmt, &tm, &fsec);
 
+	if (!IS_VALID_JULIAN(tm.tm_year, tm.tm_mon, tm.tm_mday))
+		ereport(ERROR,
+				(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+				 errmsg("date out of range: \"%s\"",
+						text_to_cstring(date_txt))));
+
 	result = date2j(tm.tm_year, tm.tm_mon, tm.tm_mday) - POSTGRES_EPOCH_JDATE;
 
 	PG_RETURN_DATEADT(result);
