Question on listener log

I Unix I had a large listener log file and due to urgency I had to remove it assuming that it will get created again once I bounce the listener. However I need to wait to bounce the listener and cannot do it right away. In the meanwhile, my question is what is the listener process doing at this point? Since it is assuming that the log file is still present, is it just dumping all the new log content generated to the os error file?