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-rw-r--r--include/stddef.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/stddef.h b/include/stddef.h
index dbf5a4ae..a5bb9ecc 100644
--- a/include/stddef.h
+++ b/include/stddef.h
@@ -14,6 +14,10 @@
#include <bits/alltypes.h>
+#if __GNUC__ > 3
+#define offsetof(type, member) __builtin_offsetof(type, member)
+#else
#define offsetof(type, member) ((size_t)( (char *)&(((type *)0)->member) - (char *)0 ))
+#endif
#endif