-XBT_PUBLIC(void *) MC_snapshot(void);
-XBT_PUBLIC(int) MC_compare_snapshots(void *s1, void *s2);
-XBT_PUBLIC(void) MC_cut(void);
-XBT_PUBLIC(void) MC_ignore(void *addr, size_t size);
+XBT_PUBLIC void MC_cut(void);
+XBT_PUBLIC void MC_ignore(void* addr, size_t size);
+
+XBT_PUBLIC void MC_ignore_heap(void* address, size_t size);
+XBT_PUBLIC void MC_unignore_heap(void* address, size_t size);
+XBT_PUBLIC void MC_ignore_global_variable(const char* var_name);