X-Git-Url: http://git.archive.openwrt.org/?p=project%2Flibubox.git;a=blobdiff_plain;f=list.h;h=ab52acff2f82ffbe41592144f5f193b161090521;hp=47ce33b51c45ec61cf90bad1cf182d67734eb2b7;hb=7a1057604ed2ad83434ed3be03728065b14a5e9c;hpb=d6d6f11625db7d0e5e2cd61ee668e3e364ee34a7

diff --git a/list.h b/list.h
index 47ce33b..ab52acf 100644
--- a/list.h
+++ b/list.h
@@ -35,8 +35,11 @@
 #define	prefetch(x)
 
 #ifndef container_of
-#define container_of(ptr, type, member) (           \
-    (type *)( (char *)ptr - offsetof(type,member) ))
+#define container_of(ptr, type, member)					\
+	({								\
+		const typeof(((type *) NULL)->member) *__mptr = (ptr);	\
+		(type *) ((char *) __mptr - offsetof(type, member));	\
+	})
 #endif
 
 struct list_head {