+ , "-u", "_base_GHCziTopHandler_runIO_closure"
+ , "-u", "_base_GHCziTopHandler_runNonIO_closure"
+ , "-u", "_base_GHCziConcziIO_ensureIOManagerIsRunning_closure"
+ , "-u", "_base_GHCziConcziSync_runSparks_closure"
+ , "-u", "_base_GHCziConcziSignal_runHandlers_closure"