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://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=04f5b33c49889a780a9a7f501d858fdbb40ae1d9;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 a2bb47f9b3..3c858d5874 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -3979,9 +3979,9 @@ 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
 	{