--- ffi.h.orig	2025-11-23 16:45:45 UTC
+++ ffi.h
@@ -4,7 +4,7 @@
 
 #ifndef FFI_H
 #define FFI_H
-#define CELLSIZE 20000000
+#define CELLSIZE 10000000
 static const int NIL = 0;
 static const int T = 2;
 static const int SMALL_INT_MAX = 1000000000;
