@@ -91,12 +91,14 @@
 # endif
 #endif
 
 #if defined(__clang__) || __GCC_VERSION__ >= 406
 # define OF_SENTINEL __attribute__((sentinel))
+# define OF_NO_RETURN __attribute__((noreturn))
 #else
 # define OF_SENTINEL
+# define OF_NO_RETURN
 #endif
 
 #if __has_attribute(objc_requires_super)
 # define OF_REQUIRES_SUPER __attribute__((objc_requires_super))
 #else
@@ -944,11 +946,11 @@
  * @warning If you override this method, you must make sure that it never
  *	    returns.
  *
  * @param selector The selector not understood by the receiver
  */
-- (void)doesNotRecognizeSelector: (SEL)selector;
+- (void)doesNotRecognizeSelector: (SEL)selector OF_NO_RETURN;
 @end
 
 /*!
  * @protocol OFCopying OFObject.h ObjFW/OFObject.h
  *