ObjFW  Diff

    const void *_Nonnull key, id _Nullable value,
    objc_associationPolicy policy);
extern id _Nullable objc_getAssociatedObject(id _Nonnull object,
    const void *_Nonnull key);
extern void objc_removeAssociatedObjects(id _Nonnull object);
# endif
#endif

/**
 * @brief Allocates a new object.
 *
 * This is useful to override @ref OFObject#alloc in a subclass that can then
 * allocate extra memory in the same memory allocation.
 *
 * @param class_ The class of which to allocate an object
 * @param extraSize Extra space after the ivars to allocate
 * @param extraAlignment Alignment of the extra space after the ivars
 * @param extra A pointer to set to a pointer to the extra space
 * @return The allocated object
 */
extern id OFAllocObject(Class class_, size_t extraSize, size_t extraAlignment,
    void *_Nullable *_Nullable extra);

/**
 * @brief This function is called when a method is not found.
 *
 * It can also be called intentionally to indicate that a method is not
 * implemetned, for example in an abstract method. However, instead of calling
 * OFMethodNotFound directly, it is preferred to do the following:
 *
 *     - (void)abstractMethod
 *     {
 *     	OF_UNRECOGNIZED_SELECTOR
 *     }
 *
 * However, do not use this for init methods. Instead, use the following:
 *
 *     - (instancetype)init
 *     {
 *     	OF_INVALID_INIT_METHOD
 *     }
 *
 * @param self The object which does not have the method
 * @param _cmd The selector of the method that does not exist
 */
extern void OF_NO_RETURN_FUNC OFMethodNotFound(id self, SEL _cmd);

/**
 * @brief Initializes the specified hash.
 *
 * @param hash A pointer to the hash to initialize
 */