From 5c4064e8bd199d70eefd7ec24766957c22f1b8e8 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 19 Dec 2015 20:05:25 +0200
Subject: 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/_struct.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Modules/_struct.c')

diff --git a/Modules/_struct.c b/Modules/_struct.c
index 068c5d1e1d..b61f9f6fa9 100644
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -1924,7 +1924,7 @@ s_sizeof(PyStructObject *self, void *unused)
     Py_ssize_t size;
     formatcode *code;
 
-    size = sizeof(PyStructObject) + sizeof(formatcode);
+    size = _PyObject_SIZE(Py_TYPE(self)) + sizeof(formatcode);
     for (code = self->s_codes; code->fmtdef != NULL; code++)
         size += sizeof(formatcode);
     return PyLong_FromSsize_t(size);
-- 
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