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.. title:: clang-tidy - objc-forbidden-subclassing
objc-forbidden-subclassing
==========================
Finds Objective-C classes which are subclasses of classes which are not designed
to be subclassed.
By default, includes a list of Objective-C classes which are publicly documented
as not supporting subclassing.
.. note::
Instead of using this check, for code under your control, you should add
``__attribute__((objc_subclassing_restricted))`` before your ``@interface``
declarations to ensure the compiler prevents others from subclassing your
Objective-C classes.
See https://clang.llvm.org/docs/AttributeReference.html#objc-subclassing-restricted
Options
-------
.. option:: ForbiddenSuperClassNames
Semicolon-separated list of names of Objective-C classes which
do not support subclassing.
Defaults to `ABNewPersonViewController;ABPeoplePickerNavigationController;ABPersonViewController;ABUnknownPersonViewController;NSHashTable;NSMapTable;NSPointerArray;NSPointerFunctions;NSTimer;UIActionSheet;UIAlertView;UIImagePickerController;UITextInputMode;UIWebView`.
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