@@ -42,12 +42,9 @@
 #include <string.h>
 #include <limits.h>
 #define sz(x) ( sizeof (x) / sizeof (x) [0] )
 
-
-enum /* constants */ {
-	null = 0,
-};
+#define null ((void*)0)
 
 typedef unsigned long long word;
 typedef _Bool bool;
 enum { false = 0, true = 1 };