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problem with RESTART-CASE
- To: info-macl@cambridge.apple.com
- Subject: problem with RESTART-CASE
- From: sfelshin@Athena.MIT.EDU
- Date: Tue, 12 May 92 11:34:11 EDT
I am having trouble with RESTART-CASE in MCL 2.0b1.
Calling RESTART-CASE results in an error.
(restart-case 1 (nil () 2)) =>
; Compiler warnings :
; Undeclared free variable CCL::$V_ISTRUCT, in an anonymous lambda form.
> Error: Unbound variable: CCL::$V_ISTRUCT
etc., etc.
Macroexpanding the sexp and the expansion's innards exposes the unbound
variable:
(restart-case 1 (nil () 2)) -->
(block #:g74
(let* ((#:g75 (ccl::%cons-restart 'nil nil nil nil nil))
(#:g73 (list #:g75))
(ccl::%restarts% (cons #:g73 ccl::%restart%)))
(declare (dynamic-extent #:g75 #:g73 ccl::%restarts%))
(catch #:g73 (return-from #:g74 1)))
2)
(ccl::%cons-restart 'nil nil nil nil nil) -->
(ccl::%gvector ccl::$v_istruct 'restart 'nil nil nil nil nil)
CCL::%GVECTOR is documented in the listener as taking arguments ARG0 &REST
THE-REST. All my attempts to discover any set of proper values to pass to
CCL::%GVECTOR have caused MCL to crash and burn. CCL:$V_ISTRUCT has no
value, function, or documentation, and has an empty plist.
Is the problem mine or MCL's? If the former, what am I doing wrong? If
the latter, can anyone tell me how to patch MCL?
Sue Felshin
sfelshin@athena.mit.edu