How to debug Perl program sudden exits?

Posted by taw on Stack Overflow See other posts from Stack Overflow or by taw
Published on 2010-06-09T06:11:04Z Indexed on 2010/06/09 6:12 UTC
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I have Perl program based on io::async, and it sometimes just exits after a few hours/days without printing any error message whatsoever. There's nothing in dmesg or /var/log either. STDOUT/STDERR are both autoflush(1) so data shouldn't be lost in buffers. It doesn't actually exit from IO::Async::Loop->loop_forever - print I put there just to make sure of that never gets triggered.

Now one way would be to keep peppering the program with more and more prints and hope one of them gives me some clue. Is there better way to get information what was going on in a program that made it exit/silently crash?

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