misc

1 files changed, 6 insertions, 3 deletions

diff --git a/src/uvh.c b/src/uvh.c
index 42dba30..4353b3e 100644
--- a/src/uvh.c
+++ b/src/uvh.c
@@ -10,10 +10,13 @@
 
 #ifndef container_of
 #ifdef __GNUC__
-#define container_of(ptr, type, member) ({                      \
-        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
-        (type *)( (char *)__mptr - offsetof(type,member) );})
+#define member_type(type, member) __typeof__ (((type *)0)->member)
+#else
+#define member_type(type, member) const void
 #endif
+
+#define container_of(ptr, type, member) ((type *)( \
+    (char *)(member_type(type, member) *){ ptr } - offsetof(type, member)))
 #endif
 
 #define LOG(LEVEL, FMT, args...) \