From ef524c6df30c3d830c2334f16d2e800a754742b1 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@python.org>
Date: Wed, 21 Oct 2026 23:51:12 -0700
Subject: [PATCH] gh-160208: Mark PyObject inner struct as anonymous

Add __extension__ on the PyObject inner struct to fix the g++
warning:

    Include/object.h:131:16: error: ISO C++ prohibits anonymous
    structs [-Wpedantic]
    131 |         struct {
---
 Include/object.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Include/object.h b/Include/object.h
index 549b91ebecf4f22..7db96416c438241 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -128,7 +128,7 @@ struct _object {
     _Py_ANONYMOUS union {
 #if SIZEOF_VOID_P > 4
         int64_t ob_refcnt_full; /* This field is needed for efficient initialization with Clang on ARM */
-        struct {
+        _Py_ANONYMOUS struct {
 #  if PY_BIG_ENDIAN
             uint16_t ob_flags;
             uint16_t ob_overflow;