if you create a class "MyClass" and you do Smalltalk globals at: #MyLittleClass put: MyClass new. and then you remove the class "MyClass" Smalltalk globals at: #MyLittleClass will be a referencing to an obsoleteClass 2013/6/3 Andres Valloud <avalloud@smalltalk.comcastbiz.net>
How can you have an instance of a class X if the class X doesn't "exist" anymore? The whole point here is that an object's class is also a strong reference to the class, and generally it's skipped by object reference finders. The way you find those is by sending allInstances (or equivalent) to the class.
On 6/3/13 2:19 , Sebastian Tleye wrote:
This happens when you have instances of the class and the class doesn't exists anymore. "Smalltalk fixObsoleteReferences" didn't completely work for me when i had that problem, i had to find out where those references were. I think looking for strong pointers of the ObsoleteClass would be a good start.
2013/6/3 Andres Valloud <avalloud@smalltalk.**comcastbiz.net<avalloud@smalltalk.comcastbiz.net> <mailto:avalloud@smalltalk.**comcastbiz.net<avalloud@smalltalk.comcastbiz.net>
Maybe they have instances. GC can't remove a class under its instances.
On 6/3/13 2:14 , Gisela Decuzzi wrote:
Hi, I'm trying to fix this, I have Obsolete classes in the system and I want to remove them, as long as I understood this is because this classes are gone and in some point someone is referencing them.
I do an extended search an get nothing, but still the obsolete classes are there... I don't find no one with references to it but if I run: SystemNavigation new obsoleteClassesselect: [ :each | each isAnonymous
not ] I get the problem classes.
I found this thread about a similar issue but don't know how to solve the problem http://lists.gforge.inria.fr/_**_pipermail/pharo-project/2011-** __January/038824.html<http://lists.gforge.inria.fr/__pipermail/pharo-project/2011-__January/038824...>
<http://lists.gforge.inria.fr/**pipermail/pharo-project/2011-** January/038824.html<http://lists.gforge.inria.fr/pipermail/pharo-project/2011-January/038824.htm...>
Maybe someone could help me...