Index: src/backend/postmaster/autovacuum.c
===================================================================
RCS file: /home/alvherre/cvs/pgsql/src/backend/postmaster/autovacuum.c,v
retrieving revision 1.6
diff -c -r1.6 autovacuum.c
*** src/backend/postmaster/autovacuum.c	22 Nov 2005 18:17:17 -0000	1.6
--- src/backend/postmaster/autovacuum.c	28 Nov 2005 12:55:26 -0000
***************
*** 898,903 ****
--- 898,911 ----
  	vacstmt->relation = NULL;	/* all tables, or not used if relids != NIL */
  	vacstmt->va_cols = NIL;
  
+ 	/*
+ 	 * Functions in indexes may want a snapshot set.  Note we only need
+ 	 * to do this in limited cases, because it'll be done in vacuum()
+ 	 * otherwise.
+ 	 */
+ 	if (doanalyze && !dovacuum && relids != NIL)
+ 		ActiveSnapshot = CopySnapshot(GetTransactionSnapshot());
+ 
  	vacuum(vacstmt, relids);
  
  	pfree(vacstmt);