closureLFInfo, closureSMRep, closureUpdReqd,
closureSingleEntry, closureReEntrant, closureSemiTag,
closureFunInfo, isStandardFormThunk,
closureLFInfo, closureSMRep, closureUpdReqd,
closureSingleEntry, closureReEntrant, closureSemiTag,
closureFunInfo, isStandardFormThunk,