Erlend E. Aasland <erlend.aasl...@innova.no> added the comment:
In inherit_slots() in Objects/typeobject.c, Py_TPFLAGS_HAVE_VECTORCALL inheritance depends on if the base type is a heap type or not. This aligns with PEP 590[1]: Heap types never inherit the vectorcall protocol because that would not be safe (heap types can be changed dynamically). AFAICS, inherit_slots() should now use Py_TPFLAGS_IMMUTABLETYPE to decide if Py_TPFLAGS_HAVE_VECTORCALL can be inherited, and the PEP should be updated. - [1] https://www.python.org/dev/peps/pep-0590/#subclassing ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43908> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
