-(defknown %coerce-name-to-function ((or symbol cons)) function (flushable))
-(defknown %coerce-callable-to-function (callable) function (flushable))
+(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
+ (function sequence t index sequence-end function)
+ (values t (or index null))
+ (call))