Amaury Forgeot d'Arc added the comment:

PyWeakref_GET_OBJECT is also potentially dangerous: since the refcount is not 
incremented, it's very possible that the GC collects it.

The only safe operation after PyWeakref_GET_OBJECT is to Py_XINCREF the result. 
Should we provide a PyWeakRef_LockObject()?

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nosy: +amaury.forgeotdarc

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<http://bugs.python.org/issue16602>
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