--- Squeak-3.9-9/platforms/Cross/vm/sqMemoryAccess.h.orig	2006-09-14 18:52:45.000000000 +0100
+++ Squeak-3.9-9/platforms/Cross/vm/sqMemoryAccess.h	2007-12-02 22:12:12.000000000 +0000
@@ -82,7 +82,7 @@
   static inline sqInt longAtPointerput(char *ptr, sqInt val)	{ return (sqInt)(*((sqInt *)ptr)= (sqInt)val); }
   static inline sqInt oopAtPointer(char *ptr)			{ return (sqInt)(*((sqInt *)ptr)); }
   static inline sqInt oopAtPointerput(char *ptr, sqInt val)	{ return (sqInt)(*((sqInt *)ptr)= (sqInt)val); }
-  static inline char *pointerForOop(sqInt oop)			{ return sqMemoryBase + oop; }
+  static inline char *pointerForOop(usqInt oop)			{ return sqMemoryBase + oop; }
   static inline sqInt oopForPointer(char *ptr)			{ return (sqInt)(ptr - sqMemoryBase); }
   static inline sqInt byteAt(sqInt oop)				{ return byteAtPointer(pointerForOop(oop)); }
   static inline sqInt byteAtput(sqInt oop, int val)		{ return byteAtPointerput(pointerForOop(oop), val); }
@@ -106,8 +106,8 @@
 # define longAtPointerput(ptr, val)	((sqInt)(*((sqInt *)(ptr))= (sqInt)(val)))
 # define oopAtPointer(ptr)		(sqInt)(*((sqInt *)ptr))
 # define oopAtPointerput(ptr, val)	(sqInt)(*((sqInt *)ptr)= (sqInt)val)
-# define pointerForOop(oop)		((char *)(sqMemoryBase + (oop)))
-# define oopForPointer(ptr)		((sqInt)(ptr))
+# define pointerForOop(oop)		((char *)(sqMemoryBase + ((usqInt)(oop))))
+# define oopForPointer(ptr)		((sqInt)(((char *)(ptr)) - (sqMemoryBase)))
 # define byteAt(oop)			byteAtPointer(pointerForOop(oop))
 # define byteAtput(oop, val)		byteAtPointerput(pointerForOop(oop), (val))
 # define shortAt(oop)			shortAtPointer(pointerForOop(oop))
--- Squeak-3.9-9/platforms/unix/src/vm/intplugins/SocketPlugin/SocketPlugin.c.orig	2006-10-11 22:47:54.000000000 +0100
+++ Squeak-3.9-9/platforms/unix/src/vm/intplugins/SocketPlugin/SocketPlugin.c	2007-12-03 12:51:17.000000000 +0000
@@ -178,7 +178,7 @@
 static sqInt netAddressToInt(unsigned char *  ptrToByteArray) {
 	sqInt sz;
 
-	sz = interpreterProxy->byteSizeOf(((sqInt)(long)(ptrToByteArray) - 4));
+	sz = interpreterProxy->byteSizeOf(((usqInt)(long)((char *)ptrToByteArray - sqMemoryBase) - 4));
 	if (!(sz == 4)) {
 		return interpreterProxy->primitiveFail();
 	}
@@ -315,7 +315,7 @@
 		return null;
 	}
 	if (!(interpreterProxy->failed())) {
-		sz = interpreterProxy->byteSizeOf(((sqInt)(long)(name) - 4));
+		sz = interpreterProxy->byteSizeOf(((usqInt)(long)((char *)name - sqMemoryBase) - 4));
 		sqResolverStartNameLookup(name, sz);
 	}
 	if (interpreterProxy->failed()) {