From 2173df77292171f45a6c314af4c7bb73587cad4c Mon Sep 17 00:00:00 2001
From: Weinan Liu <wnliu@google.com>
Date: Wed, 9 Aug 2023 22:31:21 +0000
Subject: [PATCH 38/38] Fix undefined behavior problem when using
 list_foreach_entry

This upstream list.h offsetof implementation rely on undefined behavior implementation. Using __builtin_offsetof to fix this problem.
---
 kpatch-build/list.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kpatch-build/list.h b/kpatch-build/list.h
index e95593c..ad4643c 100644
--- a/kpatch-build/list.h
+++ b/kpatch-build/list.h
@@ -30,7 +30,7 @@
 /**
  * Get offset of a member
  */
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#define offsetof(TYPE, MEMBER) ((size_t) __builtin_offsetof(TYPE, MEMBER))
 
 /**
  * Casts a member of a structure out to the containing structure
-- 
2.33.0