From: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
Date: Mon, 24 Jun 2024 17:41:53 +0000 (+0100)
Subject: gh-120834: fix over-allocation in PyGenObject, PyCoroObject, PyAsyncGenObject. (... 
X-Git-Tag: v3.14.0a1~1344
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8ac08f36fe9016a8109edf9e167b06627fb13b5a;p=thirdparty%2FPython%2Fcpython.git

gh-120834: fix over-allocation in PyGenObject, PyCoroObject, PyAsyncGenObject. (#120941)
---

diff --git a/Objects/genobject.c b/Objects/genobject.c
index 445622e878bc..9a3194d3de26 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -813,7 +813,7 @@ static PyAsyncMethods gen_as_async = {
 PyTypeObject PyGen_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     "generator",                                /* tp_name */
-    sizeof(PyGenObject),                        /* tp_basicsize */
+    offsetof(PyGenObject, gi_iframe.localsplus), /* tp_basicsize */
     sizeof(PyObject *),                         /* tp_itemsize */
     /* methods */
     (destructor)gen_dealloc,                    /* tp_dealloc */
@@ -1164,7 +1164,7 @@ static PyAsyncMethods coro_as_async = {
 PyTypeObject PyCoro_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     "coroutine",                                /* tp_name */
-    sizeof(PyCoroObject),                       /* tp_basicsize */
+    offsetof(PyCoroObject, cr_iframe.localsplus),/* tp_basicsize */
     sizeof(PyObject *),                         /* tp_itemsize */
     /* methods */
     (destructor)gen_dealloc,                    /* tp_dealloc */
@@ -1579,7 +1579,7 @@ static PyAsyncMethods async_gen_as_async = {
 PyTypeObject PyAsyncGen_Type = {
     PyVarObject_HEAD_INIT(&PyType_Type, 0)
     "async_generator",                          /* tp_name */
-    sizeof(PyAsyncGenObject),                   /* tp_basicsize */
+    offsetof(PyAsyncGenObject, ag_iframe.localsplus), /* tp_basicsize */
     sizeof(PyObject *),                         /* tp_itemsize */
     /* methods */
     (destructor)gen_dealloc,                    /* tp_dealloc */