Mariano Martinez Peck wrote:
> Forget about discovering classes, could be possible that for a certain 
> situation the VM puts a nil to a method directory or always that happens 
> this is done with that intention, throught the message induceMDFault ?   
> If it is always throught induceMDFault   the only sender is to discover 
> used classes with ImageSegment.  So...it is used ONLY in that?

If we ignore the possibility of bugs causing it (i.e. using 
#instVarAt:put: accidentally) then yes. At least I'm not aware of any 
other use.

   - A.