Antoine Pitrou <pit...@free.fr> added the comment:
Indeed. The io module has had to circumvent this and uses the following snippet
when resurrecting an instance of a subclass of one of its types (see
iobase_dealloc() in Modules/_io/iobase.c):
/* When called from a heap type's dealloc, the type will be
decref'ed on return (see e.g. subtype_dealloc in typeobject.c). */
if (PyType_HasFeature(Py_TYPE(self), Py_TPFLAGS_HEAPTYPE))
Py_INCREF(Py_TYPE(self));
return;
I agree it would be nice to have an automatic way of handling this. I don't see
an obvious solution, though.
----------
components: +Interpreter Core
nosy: +benjamin.peterson, pitrou
priority: -> normal
stage: -> needs patch
type: crash -> feature request
versions: +Python 3.2
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<http://bugs.python.org/issue8212>
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