From a4772eb276c334fd1ba0595bb8fcc0a81be4417d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C3=A9n=C3=A9dikt=20Tran?=
 <10796600+picnixz@users.noreply.github.com>
Date: Thu, 20 Mar 2025 15:32:52 +0100
Subject: [PATCH] fix UBSan failures for `TaskStepMethWrapper`

---
 Modules/_asynciomodule.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c
index 3c2622acdd1443..28234c4f902a34 100644
--- a/Modules/_asynciomodule.c
+++ b/Modules/_asynciomodule.c
@@ -2121,8 +2121,9 @@ TaskStepMethWrapper_traverse(PyObject *op,
 }
 
 static PyObject *
-TaskStepMethWrapper_get___self__(TaskStepMethWrapper *o, void *Py_UNUSED(ignored))
+TaskStepMethWrapper_get___self__(PyObject *op, void *Py_UNUSED(closure))
 {
+    TaskStepMethWrapper *o = (TaskStepMethWrapper*)op;
     if (o->sw_task) {
         return Py_NewRef(o->sw_task);
     }
@@ -2130,7 +2131,7 @@ TaskStepMethWrapper_get___self__(TaskStepMethWrapper *o, void *Py_UNUSED(ignored
 }
 
 static PyGetSetDef TaskStepMethWrapper_getsetlist[] = {
-    {"__self__", (getter)TaskStepMethWrapper_get___self__, NULL, NULL},
+    {"__self__", TaskStepMethWrapper_get___self__, NULL, NULL},
     {NULL} /* Sentinel */
 };