SET_METACLASS_OF  495 class.c        	SET_METACLASS_OF(klass, metaclass);
SET_METACLASS_OF  496 class.c        	SET_METACLASS_OF(metaclass, metaclass);
SET_METACLASS_OF  500 class.c        	SET_METACLASS_OF(klass, metaclass);
SET_METACLASS_OF  501 class.c        	SET_METACLASS_OF(metaclass, ENSURE_EIGENCLASS(tmp));
SET_METACLASS_OF  529 class.c            SET_METACLASS_OF(klass, METACLASS_OF(rb_class_real(orig_class)));