Message345342
inherit_slots() uses:
/* Inherit tp_vectorcall_offset only if tp_call is not overridden */
if (!type->tp_call) {
COPYSLOT(tp_vectorcall_offset);
}
PyType_Ready() contains the following assertion:
/* Consistency checks for PEP 590:
* - Py_TPFLAGS_METHOD_DESCRIPTOR requires tp_descr_get
* - _Py_TPFLAGS_HAVE_VECTORCALL requires tp_call and
* tp_vectorcall_offset > 0
* To avoid mistakes, we require this before inheriting.
*/
if (type->tp_flags & Py_TPFLAGS_METHOD_DESCRIPTOR) {
_PyObject_ASSERT((PyObject *)type, type->tp_descr_get != NULL);
}
if (type->tp_flags & _Py_TPFLAGS_HAVE_VECTORCALL) {
_PyObject_ASSERT((PyObject *)type, type->tp_vectorcall_offset > 0);
_PyObject_ASSERT((PyObject *)type, type->tp_call != NULL);
}
I understand that tp_vectorcall_offset=0 is fine and the expected value for a type which doesn't have the flag _Py_TPFLAGS_HAVE_VECTORCALL. |
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Date |
User |
Action |
Args |
2019-06-12 13:21:45 | vstinner | set | recipients:
+ vstinner, jdemeyer |
2019-06-12 13:21:45 | vstinner | set | messageid: <1560345705.45.0.95611792855.issue37250@roundup.psfhosted.org> |
2019-06-12 13:21:45 | vstinner | link | issue37250 messages |
2019-06-12 13:21:45 | vstinner | create | |
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