-;;; FIXME: Couldn't/shouldn't these be DEFCONSTANT instead of
-;;; DEFPARAMETER? (It might seem even more tempting to make them
-;;; SB!XC:MOST-POSITIVE-FIXNUM and SB!XC:MOST-NEGATIVE-FIXNUM,
-;;; but that's probably not a good idea, since then we'd need
-;;; to worry about the effect of UNCROSS in expressions like
-;;; (DEFTYPE INDX3 () `(INTEGER 3 ,SB!XC:MOST-POSITIVE-FIXNUM)).)
-(defparameter *target-most-positive-fixnum* (1- (ash 1 29))