From 4c22564471e2724bcc62bc2c61ece796c946f16e Mon Sep 17 00:00:00 2001
From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Wed, 12 Nov 2008 10:10:32 +0000
Subject: [PATCH] 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.
---
 src/backend/postmaster/autovacuum.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index fd1489947f..c85ad81a8e 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -55,7 +55,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.86 2008/11/03 19:03:41 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.87 2008/11/12 10:10:32 heikki Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -222,7 +222,7 @@ typedef enum
 {
 	AutoVacForkFailed,			/* failed trying to start a worker */
 	AutoVacRebalance,			/* rebalance the cost limits */
-	AutoVacNumSignals = AutoVacRebalance		/* must be last */
+	AutoVacNumSignals			/* must be last */
 } AutoVacuumSignal;
 
 /*-------------