From 615034bd808c37c77ad2c5235a706faa4065f2a0 Mon Sep 17 00:00:00 2001
From: Charalampos Stratakis <cstratak@redhat.com>
Date: Fri, 12 Dec 2025 19:54:48 +0100
Subject: [PATCH] Initialize interned_fields to NULL

This avoids a code path where Py_XDECREF could be used on
interned_fields when uninitialized.
---
 src/c/_cffi_backend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/c/_cffi_backend.c b/src/c/_cffi_backend.c
index 835e3318..6087e635 100644
--- a/src/c/_cffi_backend.c
+++ b/src/c/_cffi_backend.c
@@ -5152,7 +5152,7 @@ static PyObject *b_complete_struct_or_union_lock_held(CTypeDescrObject *ct,
     Py_ssize_t byteoffsetorg;
     CFieldObject **previous;
     int prev_bitfield_size, prev_bitfield_free;
-    PyObject *interned_fields;
+    PyObject *interned_fields = NULL;
 
     sflags = complete_sflags(sflags);
     if (sflags & SF_PACKED)