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all necessary changes to check references to uninitialized letrec variables

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includes a new pass, letrec_check, two new primitives, and
changes to packages that grabbed the letrec undefined value

original commit: 72c958df628690ebc52a626d35cd4edcab0c7089
This commit is contained in:
Claire Alvis 2013-05-07 09:36:47 -04:00 committed by Matthew Flatt
commit 230df670ea
1 changed files with 1 additions and 2 deletions
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pkgs/compatibility-pkgs/compatibility-lib/mzlib/unit200.rkt
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@ -7,14 +7,13 @@
syntax/name syntax/name
syntax/context syntax/context
racket/syntax racket/syntax
racket/undefined
(only racket/base filter) (only racket/base filter)
"private/unitidmap.rkt") "private/unitidmap.rkt")
;; ---------------------------------------------------------------------- ;; ----------------------------------------------------------------------
;; Structures and helpers ;; Structures and helpers
(define undefined (letrec ([x x]) x)) ; initial value
(define insp (current-inspector)) ; for named structures (define insp (current-inspector)) ; for named structures
(define-struct unit (num-imports exports go)) ; unit value (define-struct unit (num-imports exports go)) ; unit value