From d7d05313943ee38f803c9a7365ca7dfd58f73aa8 Mon Sep 17 00:00:00 2001
From: Andrew Johnson <anj@aps.anl.gov>
Date: Thu, 9 Jul 2009 16:19:57 +0000
Subject: [PATCH] offsetof is required by C89 (M. Davidsaver)

---
 src/libCom/misc/dbDefs.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libCom/misc/dbDefs.h b/src/libCom/misc/dbDefs.h
index adc514bf5..5aaca0909 100644
--- a/src/libCom/misc/dbDefs.h
+++ b/src/libCom/misc/dbDefs.h
@@ -15,6 +15,8 @@
 #ifndef INC_dbDefs_H
 #define INC_dbDefs_H
 
+#include <stddef.h>
+
 #ifdef TRUE
 #   undef TRUE
 #endif
@@ -36,7 +38,7 @@
 
 /* byte offset of member in structure*/
 #ifndef OFFSET
-#   define OFFSET(structure, member) ((int) &(((structure *) 0) -> member))
+#   define OFFSET(structure, member) offsetof(structure, member)
 #endif
 
 /*Process Variable Name Size */