Message 68124 - Python tracker

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Author	Rhamphoryncus
Recipients	Rhamphoryncus
Date	2008-06-13.04:55:17
SpamBayes Score	0.1301843
Marked as misclassified	No
Message-id	<1213332926.11.0.960105812528.issue3100@psf.upfronthosting.co.za>
In-reply-to

Content
Specific enough yet? Seems the WeakValueDictionary and the module clearing aren't necessary. A subclass of weakref is created. The target of this weakref is added as an attribute of the weakref. So long as a callback is present there will be a crash on shutdown. However, if the callback prints the attribute, you get a crash right then. The weakref claims to be dead, which shouldn't be possible when the weakref's attributes have a strong reference to the target.

Specific enough yet?  Seems the WeakValueDictionary and the module
clearing aren't necessary.

A subclass of weakref is created.  The target of this weakref is added
as an attribute of the weakref.  So long as a callback is present there
will be a crash on shutdown.  However, if the callback prints the
attribute, you get a crash right then.  The weakref claims to be dead,
which shouldn't be possible when the weakref's attributes have a strong
reference to the target.

History
Date	User	Action	Args
2008-06-13 04:55:28	Rhamphoryncus	set	spambayes_score: 0.130184 -> 0.1301843 recipients: + Rhamphoryncus
2008-06-13 04:55:26	Rhamphoryncus	set	spambayes_score: 0.130184 -> 0.130184 messageid: <1213332926.11.0.960105812528.issue3100@psf.upfronthosting.co.za>
2008-06-13 04:55:24	Rhamphoryncus	link	issue3100 messages
2008-06-13 04:55:24	Rhamphoryncus	create