From a95d15ff5dd58ed1d8889e2476748a3ea49a9bf1 Mon Sep 17 00:00:00 2001
From: Magnus Hagander <magnus@hagander.net>
Date: Tue, 13 Apr 2010 08:16:09 +0000
Subject: [PATCH] Only try to do a graceful disconnect if we've successfully
 loaded the shared library with the disconnect function in it. Fixes
 segmentation fault reported by Jeff Davis.

Fujii Masao
---
 src/backend/replication/walreceiver.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/backend/replication/walreceiver.c b/src/backend/replication/walreceiver.c
index 4dedcdc8b2..090111bb11 100644
--- a/src/backend/replication/walreceiver.c
+++ b/src/backend/replication/walreceiver.c
@@ -29,7 +29,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/replication/walreceiver.c,v 1.7 2010/03/21 00:17:58 petere Exp $
+ *	  $PostgreSQL: pgsql/src/backend/replication/walreceiver.c,v 1.8 2010/04/13 08:16:09 mha Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -330,7 +330,8 @@ WalRcvDie(int code, Datum arg)
 	SpinLockRelease(&walrcv->mutex);
 
 	/* Terminate the connection gracefully. */
-	walrcv_disconnect();
+	if (walrcv_disconnect != NULL)
+		walrcv_disconnect();
 }
 
 /* SIGHUP: set flag to re-read config file at next convenient time */
-- 
2.40.0