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Don't assume optimization when for recursive function contracts. #866

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Don't assume optimization when for recursive function contracts. #866

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5 changes: 3 additions & 2 deletions typed-racket-lib/typed-racket/static-contracts/combinators/function.rkt
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Original file line number Diff line number Diff line change
Expand Up @@ -159,14 +159,15 @@
(match-define (function-combinator args indices mand-kws opt-kws typed-side?) v)
(define-values (mand-args opt-args mand-kw-args opt-kw-args rest-arg range-args)
(apply split-function-args args indices))
(define opt-kind (if #f 'flat 'chaperone))
(if (and (not rest-arg)
(null? (append mand-kw-args mand-args opt-kw-args opt-args))
typed-side?)
;; arity-0 functions end up being flat contracts when they're
;; from the typed side and the result is flat
(if range-args
(merge-restricts* 'flat (map f range-args))
(merge-restricts* 'flat null))
(merge-restricts* opt-kind (map f range-args))
(merge-restricts* opt-kind null))
(merge-restricts* 'chaperone (map f args))))

(define (function-sc-equal? a b recur)
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