From: Heikki Linnakangas <heikki@enterprisedb.com>
Date: Wed, 12 Nov 2008 10:10:43 +0000 (+0000)
Subject: Fix off-by-one error in autovacuum shmem struct sizing. This could lead to
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=927b2b24192356a99b076479d34d94e0297115d0;p=users%2Fbernd%2Fpostgres.git

Fix off-by-one error in autovacuum shmem struct sizing. This could lead to
autovacuum worker sending SIGUSR1 signal to wrong process, per Zou Yong's
report.

Backpatch to 8.3.
---

diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index 491ac9c6e0..0c7e6b8915 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -215,7 +215,7 @@ typedef enum
 {
 	AutoVacForkFailed,			/* failed trying to start a worker */
 	AutoVacRebalance,			/* rebalance the cost limits */
-	AutoVacNumSignals = AutoVacRebalance		/* must be last */
+	AutoVacNumSignals			/* must be last */
 } AutoVacuumSignal;
 
 /*-------------