{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"ecx.tcx.sess.opts.unstable_opts.extra_const_ub_checks"}]}
        ecx.tcx.sess.opts.unstable_opts.extra_const_ub_checks || layout.is_uninhabited()
    fn enforce_validity(ecx: &InterpCx<'tcx, Self>, layout: TyAndLayout<'tcx>) -> bool {
    }