From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sun, 16 Sep 2007 15:56:39 +0000 (+0000)
Subject: Fix overflow in extract(epoch from interval) for intervals exceeding 68 years.
X-Git-Url: http://waps.l3s.uni-hannover.de/gitweb/?a=commitdiff_plain;h=b93625ad886f3bc608499ef4d1630c18abe908ee;p=users%2Fbernd%2Fpostgres.git

Fix overflow in extract(epoch from interval) for intervals exceeding 68 years.
Seems to have been introduced in 8.1 by careless SECS_PER_DAY
search-and-replace.
---

diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index c28cfff6cc..77e409ba82 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -4395,9 +4395,9 @@ interval_part(PG_FUNCTION_ARGS)
 #else
 		result = interval->time;
 #endif
-		result += (DAYS_PER_YEAR * SECS_PER_DAY) * (interval->month / MONTHS_PER_YEAR);
+		result += ((double) DAYS_PER_YEAR * SECS_PER_DAY) * (interval->month / MONTHS_PER_YEAR);
 		result += ((double) DAYS_PER_MONTH * SECS_PER_DAY) * (interval->month % MONTHS_PER_YEAR);
-		result += interval->day * SECS_PER_DAY;
+		result += ((double) SECS_PER_DAY) * interval->day;
 	}
 	else
 	{