Only try to do a graceful disconnect if we've successfully loaded the

mhagander · mhagander · commit c4faeebc1bff · 2010-04-13T08:16:09.000Z
shared library with the disconnect function in it. Fixes segmentation
fault reported by Jeff Davis.

Fujii Masao
diff --git a/src/backend/replication/walreceiver.c b/src/backend/replication/walreceiver.c
@@ -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 */

Original file line number	Diff line number	Diff line change
`@@ -330,7 +330,8 @@ WalRcvDie(int code, Datum arg)`
`330`	`330`	`SpinLockRelease(&walrcv->mutex);`
`331`	`331`
`332`	`332`	`/* Terminate the connection gracefully. */`
`333`		`- walrcv_disconnect();`
	`333`	`+ if (walrcv_disconnect != NULL)`
	`334`	`+ walrcv_disconnect();`
`334`	`335`	`}`
`335`	`336`
`336`	`337`	`/* SIGHUP: set flag to re-read config file at next convenient time */`