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#if __has_attribute(__objc_subclassing_restricted__)
# define OF_SUBCLASSING_RESTRICTED \
__attribute__((__objc_subclassing_restricted__))
#else
# define OF_SUBCLASSING_RESTRICTED
#endif
#if __has_attribute(__objc_method_family__)
# define OF_METHOD_FAMILY(f) __attribute__((__objc_method_family__(f)))
#else
# define OF_METHOD_FAMILY(f)
#endif
#if __has_attribute(__objc_designated_initializer__)
# define OF_DESIGNATED_INITIALIZER \
__attribute__((__objc_designated_initializer__))
#else
# define OF_DESIGNATED_INITIALIZER
#endif
#ifdef __GNUC__
# ifdef OF_X86_64
# define OF_X86_64_ASM
# endif
# ifdef OF_X86
# define OF_X86_ASM
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