From 7b6ad08eabbae78e8148526e4c676714488a4f09 Mon Sep 17 00:00:00 2001
From: Johannes Schickel
Date: Fri, 20 Mar 2009 00:03:16 +0000
Subject: Hopefully fix mingw64 compilation (borrowed from
 engines/scumm/saveload.h)

svn-id: r39553
---
 engines/sky/compact.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'engines/sky/compact.cpp')

diff --git a/engines/sky/compact.cpp b/engines/sky/compact.cpp
index 35701e43a1..1d3233eb41 100644
--- a/engines/sky/compact.cpp
+++ b/engines/sky/compact.cpp
@@ -29,12 +29,13 @@
 #include "common/file.h"
 #include "sky/compact.h"
 #include "gui/message.h"
+#include <stddef.h>	// for ptrdiff_t
 
 namespace Sky {
 
 #define	SKY_CPT_SIZE	419427
 
-#define OFFS(type,item) (((long)(&((type*)0)->item)))
+#define OFFS(type,item) (((ptrdiff_t)(&((type*)42)->item))-42)
 #define MK32(type,item) OFFS(type, item),0,0,0
 #define MK16(type,item) OFFS(type, item),0
 #define MK32_A5(type, item) MK32(type, item[0]), MK32(type, item[1]), \
-- 
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