Function rustc_traits::type_op::type_op_normalize_fn_sig

pub(in type_op) fn type_op_normalize_fn_sig<'tcx>(
    tcx: TyCtxt<'tcx>, 
    canonicalized: Canonical<'tcx, ParamEnvAnd<'tcx, Normalize<FnSig<'tcx>>>>
) -> Result<&'tcx Canonical<'tcx, QueryResponse<'tcx, FnSig<'tcx>>>, NoSolution>