Index: src/backend/storage/ipc/sinval.c
===================================================================
RCS file: /home/sriggs/pg/REPOSITORY/pgsql/src/backend/storage/ipc/sinval.c,v
retrieving revision 1.89
diff -c -r1.89 sinval.c
*** src/backend/storage/ipc/sinval.c	1 Jan 2009 17:23:47 -0000	1.89
--- src/backend/storage/ipc/sinval.c	5 Jan 2009 19:03:45 -0000
***************
*** 303,308 ****
--- 303,311 ----
  	/* Must prevent SIGUSR2 interrupt while I am running */
  	notify_enabled = DisableNotifyInterrupt();
  
+ 	if (!XactSyncCommit)
+ 		elog(ERROR, "an error occurred while processing catchup event");
+ 
  	/*
  	 * What we need to do here is cause ReceiveSharedInvalidMessages() to run,
  	 * which will do the necessary work and also reset the