-(defknown %coerce-name-to-function ((or symbol cons)) function (flushable))
-(defknown %coerce-callable-to-function (callable) function (flushable))
-
-;;; Structure slot accessors or setters are magically "known" to be
-;;; these functions, although the var remains the Slot-Accessor
-;;; describing the actual function called.
-;;;
-;;; FIXME: It would be nice to make structure slot accessors be
-;;; ordinary functions.
-(defknown %slot-accessor (t) t (flushable))
-(defknown %slot-setter (t t) t (unsafe))
+(defknown %coerce-name-to-fun ((or symbol cons)) function (flushable))
+(defknown %coerce-callable-to-fun (callable) function (flushable))
+(defknown failed-%with-array-data (t t t) nil)
+(defknown %find-position
+ (t sequence t index sequence-end function function)
+ (values t (or index null))
+ (flushable call))
+(defknown (%find-position-if %find-position-if-not)
+ (function sequence t index sequence-end function)
+ (values t (or index null))
+ (call))
+
+(defknown sb!kernel::arg-count-error (t t t t t t) nil (unsafe))