[squeak-dev] Class with nil environment?!

Frank Shearar frank.shearar at gmail.com
Fri Jul 5 08:47:26 UTC 2013

As it happens there are 249 classes in my starting-point image with a
nil environment, and somewhere in excess of 1k classes with
environment == Smalltalk.

One possibly dirty hack that seems to work is to remove the access to
the instvar and use `self environment` instead (in Class >>


On 5 July 2013 04:30, Chris Muller <asqueaker at gmail.com> wrote:
> With the image you start with, PianoRollNoteMorph's environment
> instvar is set correctly?  But then, at some point, it gets set to
> nil?  Does a halt catch that change?
> On Thu, Jul 4, 2013 at 4:00 PM, Frank Shearar <frank.shearar at gmail.com> wrote:
>> If you update at the moment, when you get to loading Morphic-fbs.663
>> you'll get a walkback because in Class >> #declare:,
>> PianoRollNoteMorph's environment instvar is nil.
>> Which is kind've odd. I thought that all classes MUST have an
>> environment (and that right now that environment is Smalltalk).
>> So I've tried moving Sound and Morphic (the source & destination
>> packages for the PianoRollNoteMorph move) around in config maps, and
>> that doesn't help.
>> What gives? How can I fix this?
>> frank

More information about the Squeak-dev mailing list