{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"if"}]}
        if let Status::Unstable { gate, .. } = self.status_in_item(ccx) {
        let msg = format!("{} are not allowed in {}s", self.0.to_plural_string(), ccx.const_kind());
            ccx.tcx.sess.create_feature_err(errors::UnallowedOpInConstContext { span, msg }, gate)