commit b117d79e4bf742125aeaebe358157b909b52051f
author Serhiy Storchaka <storchaka@gmail.com> Sat Dec 19 20:07:48 2015 +0200
committer Serhiy Storchaka <storchaka@gmail.com> Sat Dec 19 20:07:48 2015 +0200
tree 2f1b4007663b334cb2a36f527d96d735e8ea6d4c
parent 1ebd65a37b9098015f3449b2022d47271445b7b6

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.

Modules/arraymodule.c

diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index 1d1f0d3..f147115 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1541,7 +1541,7 @@
 array_sizeof(arrayobject *self, PyObject *unused)
 {
     Py_ssize_t res;
-    res = sizeof(arrayobject) + self->allocated * self->ob_descr->itemsize;
+    res = _PyObject_SIZE(Py_TYPE(self)) + self->allocated * self->ob_descr->itemsize;
     return PyLong_FromSsize_t(res);
 }