From a82280f235c4e55b3a9221cb7bc78b08465f1f50 Mon Sep 17 00:00:00 2001
From: void!yura <void!yura>
Date: Mon, 17 Jan 2005 11:46:32 +0000
Subject: [PATCH] offsetof already defined in stddef.h in gcc4, so add check to
 prevent redefinition.

(Logical change 1.658)
---
 include/ntfs/support.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/ntfs/support.h b/include/ntfs/support.h
index ade65e08..b02390bf 100644
--- a/include/ntfs/support.h
+++ b/include/ntfs/support.h
@@ -49,7 +49,9 @@
 /*
  * Useful macro for determining the offset of a struct member.
  */
+#ifndef offsetof
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
 
 /*
  * Simple bit operation macros. NOTE: These are NOT atomic.