linux-kernel - [PATCH 09/17] linux/offsetof.h: Implement offsetof() in terms of memberof()

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Date:   Fri, 19 Nov 2021 12:36:37 +0100
From:   Alejandro Colomar <alx.manpages@...il.com>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Alejandro Colomar <alx.manpages@...il.com>
Subject: [PATCH 09/17] linux/offsetof.h: Implement offsetof() in terms of memberof()

Use memberof() instead of explicitly dereferencing a null pointer.

Signed-off-by: Alejandro Colomar <alx.manpages@...il.com>
---
 include/linux/offsetof.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/offsetof.h b/include/linux/offsetof.h
index d0e2f1c34aae..809aed37ad29 100644
--- a/include/linux/offsetof.h
+++ b/include/linux/offsetof.h
@@ -3,13 +3,14 @@
 #define _LINUX_OFFSETOF_H
 
 #include <linux/compiler_types.h>
+#include <linux/memberof.h>
 
 
 #undef offsetof
 #ifdef __compiler_offsetof
 #define offsetof(TYPE, MEMBER)	__compiler_offsetof(TYPE, MEMBER)
 #else
-#define offsetof(TYPE, MEMBER)	((size_t)&((TYPE *)0)->MEMBER)
+#define offsetof(TYPE, MEMBER)	((size_t)&memberof(TYPE, MEMBER))
 #endif
 
 
-- 
2.33.1