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 <avall...@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<avall...@smalltalk.comcastbiz.net> >> <mailto:avalloud@smalltalk.**comcastbiz.net<avall...@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.html> >> >> <http://lists.gforge.inria.fr/**pipermail/pharo-project/2011-** >> January/038824.html<http://lists.gforge.inria.fr/pipermail/pharo-project/2011-January/038824.html> >> > >> >> Maybe someone could help me... >> >> >> >> >
