{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"_"}]}
            _ if cid.promoted.is_some() => CtfeValidationMode::Promoted,
        let mode = match ecx.tcx.static_mutability(cid.instance.def_id()) {
            Some(mutbl) => CtfeValidationMode::Static { mutbl }, // a `static`