-#define read_free_race (read_generation[0] == last_free_gen)
-#define read_free (free_done && data_access[0])
+// Poison value for freed memory
+#define POISON 66
+// Memory with correct data
+#define WINE 33
+#define SLAB_SIZE 2
+
+#define read_poison (data_read[0] == POISON)