From 7ec2e279fea3b340f642cff888bfa45368f5ded0 Mon Sep 17 00:00:00 2001
From: Ken Jin <kenjin@python.org>
Date: Tue, 11 Oct 2022 23:11:46 +0800
Subject: [PATCH] gh-95756: Free and NULL-out code caches when needed
 (GH-98181)

---
 Objects/codeobject.c  | 1 +
 Objects/frameobject.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/Objects/codeobject.c b/Objects/codeobject.c
index 7a0080c08c7..8920b1db2ca 100644
--- a/Objects/codeobject.c
+++ b/Objects/codeobject.c
@@ -2238,6 +2238,7 @@ _PyStaticCode_Dealloc(PyCodeObject *co)
         Py_CLEAR(co->_co_cached->_co_freevars);
         Py_CLEAR(co->_co_cached->_co_varnames);
         PyMem_Free(co->_co_cached);
+        co->_co_cached = NULL;
     }
     co->co_extra = NULL;
     if (co->co_weakreflist != NULL) {
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index bd1608e0d75..8b4494a5fe8 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -651,6 +651,8 @@ add_load_fast_null_checks(PyCodeObject *co)
         Py_CLEAR(co->_co_cached->_co_cellvars);
         Py_CLEAR(co->_co_cached->_co_freevars);
         Py_CLEAR(co->_co_cached->_co_varnames);
+        PyMem_Free(co->_co_cached);
+        co->_co_cached = NULL;
     }
 }