{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"ctfe_mode:"}]}
        ctfe_mode: Option<CtfeValidationMode>,
        ref_tracking: Option<&mut RefTracking<MPlaceTy<'tcx, M::Provenance>, Vec<PathElem>>>,
        reset_provenance_and_padding: bool,