;;; fasl files would fail, because there are no DEFUNs for these
;;; operations any more.)
;;; 5 = sbcl-0.6.8 has rearranged static symbols.
-;;; 6 = sbcl-0.6.9 got rid of non-ANSI %DEFCONSTANT/%%DEFCONSTANT stuff.
+;;; 6 = sbcl-0.6.9, got rid of non-ANSI %DEFCONSTANT/%%DEFCONSTANT stuff
+;;; and deleted a slot from DEBUG-SOURCE structure.
(setf *backend-register-save-penalty* 3)