The only solution I have found involves maintaining a list of handles in the main thread and dropping them after the worker thread indicates it is done

I think this is exactly the way to go if you need to pass file descriptor numbers around for some reason.  If you don't want $c to go out of scope, just keep it around for as long as needed.

In reply to Re: Preventing IO::Handles from closing on destruction by Eliya
in thread Preventing IO::Handles from closing on destruction by exaethier

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