void sniff_code_object(struct code *code, os_vm_size_t displacement);
void gencgc_apply_code_fixups(struct code *old_code, struct code *new_code);
-long update_dynamic_space_free_pointer(void);
+sword_t update_dynamic_space_free_pointer(void);
void gc_alloc_update_page_tables(int page_type_flag, struct alloc_region *alloc_region);
void gc_alloc_update_all_page_tables(void);
void gc_set_region_empty(struct alloc_region *region);