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From 8395cf4c5753569ed964794ab98ba2fcb8af250b Mon Sep 17 00:00:00 2001
From: Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
Date: Wed, 29 Oct 2014 11:37:05 +0100
Subject: [PATCH 07/10] Use RIOT's container_of implementation
---
src-api/common/container_of.h | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/src-api/common/container_of.h b/src-api/common/container_of.h
index fcb38fe..b49d836 100644
--- a/src-api/common/container_of.h
+++ b/src-api/common/container_of.h
@@ -59,10 +59,24 @@
* @return pointer to surrounding struct
*/
#ifndef container_of
-#define container_of(ptr, type, member) ({ \
- const typeof(((type *)0)->member ) *__tempptr = (ptr); \
- (type *)((char *)__tempptr - offsetof(type,member)); \
- })
+#if __STDC_VERSION__ >= 201112L
+# define container_of(PTR, TYPE, MEMBER) \
+ (_Generic((PTR), \
+ const __typeof__ (((TYPE *) 0)->MEMBER) *: \
+ ((TYPE *) ((char *) (PTR) - offsetof(TYPE, MEMBER))), \
+ __typeof__ (((TYPE *) 0)->MEMBER) *: \
+ ((TYPE *) ((char *) (PTR) - offsetof(TYPE, MEMBER))) \
+ ))
+#elif defined __GNUC__
+# define container_of(PTR, TYPE, MEMBER) \
+ (__extension__ ({ \
+ __extension__ const __typeof__ (((TYPE *) 0)->MEMBER) *__m____ = (PTR); \
+ ((TYPE *) ((char *) __m____ - offsetof(TYPE, MEMBER))); \
+ }))
+#else
+# define container_of(PTR, TYPE, MEMBER) \
+ ((TYPE *) ((char *) (PTR) - offsetof(TYPE, MEMBER)))
+#endif
#endif
/**
--
1.9.1
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