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Check the presence of a mro.
The mere presence of the Py_TPFLAGS_HAVE_CLASS doesn't ensure it is there.
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@ -8,6 +8,8 @@
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* Avoid pointless string manipulation in NamedTupleCursor (ticket #10)
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* psycopg/microprotocols.c: Check the presence of a mro.
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2010-11-08 Daniele Varrazzo <daniele.varrazzo@gmail.com>
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* psycopg/microprotocols.c: use faster function to build tuples.
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@ -88,7 +88,7 @@ _get_superclass_adapter(PyObject *obj, PyObject *proto)
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Py_ssize_t i, ii;
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type = (PyTypeObject *)Py_TYPE(obj);
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if (!(Py_TPFLAGS_HAVE_CLASS & type->tp_flags)) {
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if (!((Py_TPFLAGS_HAVE_CLASS & type->tp_flags) && type->tp_mro)) {
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/* has no mro */
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return NULL;
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}
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