Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size.
This allows sys.getsize() to work correctly with their subclasses with
__slots__ defined.
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 5647b57..c59ad24 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -2974,7 +2974,7 @@
{
Py_ssize_t res;
- res = sizeof(PyByteArrayObject) + self->ob_alloc * sizeof(char);
+ res = _PyObject_SIZE(Py_TYPE(self)) + self->ob_alloc * sizeof(char);
return PyLong_FromSsize_t(res);
}