[IronPython] Possible WeakReference leak in Ipy 2.6.1

Dino Viehland dinov at microsoft.com
Wed Oct 13 21:48:41 CEST 2010

Yep, this definitely looks like an issue - could you open a bug?  We should probably have a check when adding which causes us to scan the list occasionally and remove any dead types.

From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Idan Zaltzberg
Sent: Wednesday, October 13, 2010 6:48 AM
To: Discussion of IronPython
Subject: [IronPython] Possible WeakReference leak in Ipy 2.6.1

When definnning classes in a method that are subcallses, like:
def d():
                class A(BaseType): pass
The new generated types is appended to the _subtypes weak reference list on BaseType.
Looks like this list is only cleaned when RemoveSubType Is called, which might never happen if I understand correctly.

Seems to me there should be a cleanup mechanism similar to WeakDictionary, so the list can't grow to infinity.

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