Issue 1491688: Pickle & schizofrenic classes don't match

Issue1491688

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classification

Title:	Pickle & schizofrenic classes don't match
Type:		Stage:
Components:	Extension Modules	Versions:	Python 2.4

process

Created on 2006-05-19 15:51 by ronaldoussoren, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Files
File name	Uploaded	Description	Edit
pickle-crash.py	ronaldoussoren, 2006-05-19 15:51

Messages (5)
msg28574 - (view)	Author: Ronald Oussoren (ronaldoussoren) *	Date: 2006-05-19 15:51
The attached scripts causes infinite recursion on the C level resulting in a crash. The script defines a subclass of object that throws an exception in its __reduce__ method. This method is then uses as the value of a slot on a subclass of float. This subclass also defines a __class__ property that returns the __class__ of the value in its sole slot. Finally an instance of the subclass of float is pickled. This results in infinite recursion. The problem goes away when __reduce__ doesn't raise an exception or when the __class__ property is removed.
msg28575 - (view)	Author: Ronald Oussoren (ronaldoussoren) *	Date: 2006-05-19 16:24
Logged In: YES user_id=580910 I forgot to mention that this patch is present in 2.3.5 upto the current SVN head.
msg28576 - (view)	Author: Ziga Seilnacht (zseil) *	Date: 2006-05-19 17:35
Logged In: YES user_id=1326842 This is a duplicate of bug #931877. Patch #1462488 should fix it.
msg28577 - (view)	Author: Ziga Seilnacht (zseil) *	Date: 2006-05-19 18:00
Logged In: YES user_id=1326842 This is a duplicate of bug #931877. Patch #1462488 should fix it.
msg28578 - (view)	Author: Ronald Oussoren (ronaldoussoren) *	Date: 2006-05-19 18:29
Logged In: YES user_id=580910 That's indeed the same problem as this. I'm closing this bug.