From e3c7beb6ea050abbb77da098bdd30a808a8cb2c2 Mon Sep 17 00:00:00 2001
From: dimitri staessens <dimitri.staessens@ugent.be>
Date: Wed, 12 Jul 2017 11:35:08 +0200
Subject: include: Use offsetof in list.h

---
 include/ouroboros/list.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/ouroboros/list.h b/include/ouroboros/list.h
index 8811e291..40627651 100644
--- a/include/ouroboros/list.h
+++ b/include/ouroboros/list.h
@@ -26,6 +26,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <stddef.h>
 #include <sys/types.h>
 
 struct list_head {
@@ -34,7 +35,7 @@ struct list_head {
 };
 
 #define list_entry(ptr, type, mbr)                              \
-        ((type *)((uint8_t *)(ptr)-(size_t)(&((type *)0)->mbr)))
+        ((type *)((uint8_t *)(ptr) - offsetof(type, mbr)))
 
 #define list_first_entry(ptr, type, mbr)                        \
         list_entry((ptr)->nxt, type, mbr)
-- 
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