Status: Accepted Owner: stephane...@gmail.com Labels: Milestone-1.3 New issue 3624 by stephane...@gmail.com: LeftOver of Smalltalk and SystemDictionary http://code.google.com/p/pharo/issues/detail?id=3624 there are wrong messages sent to self environment.... here garbageCollect. removeUninstantiatedSubclassesSilently "Remove the classes of any subclasses that have neither instances nor subclasses. Answer the number of bytes reclaimed" "Player removeUninstantiatedSubclassesSilently" | candidatesForRemoval oldFree | oldFree := self environment garbageCollect. candidatesForRemoval := self subclasses select: [:c | (c instanceCount = 0) and: [c subclasses size = 0]]. candidatesForRemoval do: [:c | c removeFromSystem]. ^ self environment garbageCollect - oldFree