Unsupported legacy slots in HPy
The following legacy slots are currently unsupported in HPy and cause a fatal RPython error if used:
Py_tp_alloc 47 Py_tp_base 48 Py_tp_bases 49 Py_tp_clear 51 Py_tp_dealloc 52 Py_tp_del 53 Py_tp_doc 56 Py_tp_is_gc 61 Py_tp_traverse 71 Py_tp_free 74
We should support those that we can (tp_base, tp_bases and tp_doc?) and for the rest, either give a better error or fall back to creating a cpyext type.