*** pgsql/src/bin/pg_dump/pg_dump.c	2010/01/28 23:21:12	1.569
--- pgsql/src/bin/pg_dump/pg_dump.c	2010/02/07 20:48:10	1.570
***************
*** 12,18 ****
   *	by PostgreSQL
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.568 2010/01/22 16:40:19 rhaas Exp $
   *
   *-------------------------------------------------------------------------
   */
--- 12,18 ----
   *	by PostgreSQL
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.569 2010/01/28 23:21:12 petere Exp $
   *
   *-------------------------------------------------------------------------
   */
*************** binary_upgrade_set_relfilenodes(PQExpBuf
*** 2300,2305 ****
--- 2300,2311 ----
  	Oid			pg_class_reltoastrelid;
  	Oid			pg_class_reltoastidxid;
  
+ 	/*
+ 	 * Note: we don't need to use pg_relation_filenode() here because this
+ 	 * function is not intended to be used against system catalogs.
+ 	 * Otherwise we'd have to worry about which versions pg_relation_filenode
+ 	 * is available in.
+ 	 */
  	appendPQExpBuffer(upgrade_query,
  					  "SELECT c.relfilenode, c.reltoastrelid, t.reltoastidxid "
  					  "FROM pg_catalog.pg_class c LEFT JOIN "