[issue1615] descriptor protocol bug

[Antoine Pitrou]

Antoine Pitrou added the comment:

PyObject_GenericGetAttr is invoked from slot_tp_getattr_hook in
typeobject.c via tp_getattro. The problem is that, when tp_getattro
returns with an AttributeError, there is no way for slot_tp_getattr_hook
to know whether the error was raised by PyObject_GenericGetAttr itself
or by subsequent invocation of user code. Perhaps by adding an attribute
to the raised AttributeError?

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Tracker <report at bugs.python.org>
<http://bugs.python.org/issue1615>
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