-int compare_heap_area(void *area1, void* area2, xbt_dynar_t previous, mc_object_info_t info, mc_object_info_t other_info, char *type, int pointer_level);
+int compare_heap_area(int process_index, const void *area1, const void* area2, mc_snapshot_t snapshot1, mc_snapshot_t snapshot2, xbt_dynar_t previous, mc_type_t type, int pointer_level);