On Tue, Dec 29, 2009 at 6:13 PM, Lukas Renggli <renggli@gmail.com> wrote:

> lead to ugly side effects in loading specific packages.� Details aside, it
> seems _really_ bad to me for the vm to crash without leaving behind any
> traces of what happened.

This is not a VM that crashes. In fact everything is still fully
functional and running. What Mariano is seeing is the emergency
debugger, a very primitive debugger implemented in
MorphicUIManager>>onPrimitiveError: used when everything else fails.

Thanks Lukas for the explanation. Every day I learn something new :)

Now I was wondering if we can change the onPrimitiveError:� to something like this:

onPrimitiveError: aString
�� | context |
��
�� (String
�� streamContents:
�� [:s |
�� s nextPutAll: '***System error handling failed***'.
�� s cr; nextPutAll: aString.
�� context := thisContext sender sender.
�� 200 timesRepeat: [context == nil ifFalse: [s cr; print: (context := context sender)]].
�� s cr; nextPutAll: '-------------------------------'.
�� s cr; nextPutAll: 'Type CR to enter an emergency evaluator.'.
�� s cr; nextPutAll: 'Type any other character to restart.'])
�� displayAt: 10 @ 0.
�� [Sensor keyboardPressed] whileFalse.
�� Sensor keyboard = Character cr ifTrue: [Transcripter emergencyEvaluator].
��
�� World install "init hands and redisplay"

I just changed to 200 timesRepeat instead of 20 so that to have the full stack, or at least, more than 20 lines and also the point of �� displayAt: 10 @ 0.�� because in my case I couldn't see the first letters of the windows.

If you are ok, I can put a slice in the inbox and create the issue.

Thanks

Mariano

�

Lukas

--
Lukas Renggli
http://www.lukas-renggli.ch

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