[issue5437] Singleton MemoryError can hold traceback data and locals indefinitely

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

A proper fix would probably be to maintain a bunch of preallocated
instances in a freelist rather than relying on an explicit singleton. It
would enforce proper dereferencing and garbage collection semantics.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5437>
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