/* memory functions */
-extern int ao_scheme_collects[2];
-extern int ao_scheme_freed[2];
-extern int ao_scheme_loops[2];
+extern uint64_t ao_scheme_collects[2];
+extern uint64_t ao_scheme_freed[2];
+extern uint64_t ao_scheme_loops[2];
/* returns 1 if the object was already marked */
int