ObjFW  Check-in [478119cde4]

extern struct objc_hashtable* objc_hashtable_new(uint32_t (*)(const void*),
    bool (*)(const void*, const void*), uint32_t);
extern struct objc_hashtable_bucket objc_deleted_bucket;
extern void objc_hashtable_set(struct objc_hashtable*, const void*,
    const void*);
extern void* objc_hashtable_get(struct objc_hashtable*, const void*);
extern void objc_hashtable_delete(struct objc_hashtable*, const void*);
extern void objc_hashtable_free(struct objc_hashtable *h);
extern void objc_hashtable_free(struct objc_hashtable*);
extern void objc_register_selector(struct objc_abi_selector*);
extern void objc_register_all_selectors(struct objc_abi_symtab*);
extern void objc_unregister_all_selectors(void);
extern struct objc_sparsearray *objc_sparsearray_new(uint_fast8_t);
extern void *objc_sparsearray_get(struct objc_sparsearray*, uintptr_t);
extern struct objc_sparsearray* objc_sparsearray_new(uint_fast8_t);
extern void* objc_sparsearray_get(struct objc_sparsearray*, uintptr_t);
extern void objc_sparsearray_set(struct objc_sparsearray*, uintptr_t, void*);
extern void objc_sparsearray_free(struct objc_sparsearray*);
extern struct objc_dtable* objc_dtable_new(void);
extern void objc_dtable_copy(struct objc_dtable*, struct objc_dtable*);
extern void objc_dtable_set(struct objc_dtable*, uint32_t, IMP);
extern void objc_dtable_free(struct objc_dtable*);
extern void objc_dtable_cleanup(void);