Hi folks. I am trying to do something and I found a VM crash. Suppose I want to swap out a class, do a become with a proxy (that with the DNU will load the class back). In addition, I have instances of the swapped class.

Example of code (will crash in the last line):

o := MyObject new.
o foo: 123.
p := ClassProxy new.
p become: MyObject.
o == nil.
o foo.

My Object just extends Object, has an instVar 'foo',� and implements the accessors.

ClassProxy implements:

become: aClass
�� className := aClass name.
�� aClass fileOut.
�� super become: aClass

and

doesNotUnderstand: aMessage
�� | reloadedClass |
�� (FileStream fileNamed: className, '.st') fileIn.
�� reloadedClass := Smalltalk at: className.
�� self becomeForward: reloadedClass.
�� ^aMessage sendTo: reloadedClass

So....does someone know why the crash?

how can I solve it ?

Thanks in advance

Mariano