[racket-dev] [racket] match and debug in Advanced Student

From: Jay McCarthy (jay.mccarthy at gmail.com)
Date: Tue Nov 8 23:21:53 EST 2011

I have no idea what the Debug button does... I call it the "Crash
DrRacket" button, because that's what it did in the early 2000s when I
started with Racket. I'm not sure I'm the best person to debug this
(despite otherwise being responsible for match in ASL.) Anyone else
have ideas what this could mean?


On Tue, Nov 8, 2011 at 9:17 PM, Prabhakar Ragde <plragde at uwaterloo.ca> wrote:
> I never use the Debug button, but I let my students start using Advanced
> Student today, and of course they tried it out.
> The following program induces a strange error when the Debug button is
> pressed.
> (match 3
>  [`(,x) 3]
>  [x 3])
> The error is:
> internal error: skipped binding is used
> after which the program hangs, though it can be stopped with the Stop
> button. --PR
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Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University

"The glory of God is Intelligence" - D&C 93

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