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Re: redefining VIEW crashes MCL
- To: Steve Strassmann <straz@cambridge.apple.com>, SHAPIRO%RCSMPB@gmr.com
- Subject: Re: redefining VIEW crashes MCL
- From: bill@cambridge.apple.com (Bill St. Clair)
- Date: Mon, 4 May 1992 19:52:12 -0500
- Cc: info-mcl
>>The following definition in MCL crashes my IIci. Am I doing something wrong?
>>
>>(defclass view ()
>> ((scene :initform nil :initarg :scene :accessor view-scene)
>> (camera :initform nil :initarg :camera :accessor view-camera)
>> (lighting :initform nil :initarg :lighting :accessor view-lighting)))
>>
>>Thanks.
>>
>>Vadim Shapiro
>>GM Research
>
>
>The problem is that VIEW is used to implement the window system, so if you
>redefine it, you're asking for big trouble.
>
Steve's explanation is correct. That evaluating the DEFCLASS above causes your
MCL to crash rather than signal an error informing you of an attempt to redefine
a kernel class was a bug in MCL 2.0b1. This bug has been fixed for MCL 2.0 final.