Bugs item #1174712, was opened at 2005-04-01 09:22
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: Python Interpreter Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Armin Rigo (arigo)
Assigned to: Nobody/Anonymous (nobody)
Summary: subclassing ModuleType and another built-in type
Initial Comment:
class X(types.ModuleType, str): pass
X('name')
-> segfault
This buggy subclassing goes through typeobject.c's checks because
PyModuleObject looks exactly like a user-defined subclass of 'object': it has a
PyObject_HEAD followed only by the dict, as specified by tp_dictoffset.
A fix would be to forbid any subclassing to move the tp_dictoffset of a
non-heap type.
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You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1174712&group_id=5470
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