Feature #11987: daemons can't show the backtrace of rb_bug

• Status: Open
• Priority: Normal
• Assignee: -
• Target version: -

[naruse (Yui NARUSE)]

Ruby shows backtrace and other information into stderr on rb_bug.
But daemon process redirects stderr into /dev/null.
How do I get the log?

NOTE: if I can reproduce this, I can use strace to get it. But issues are not always reproducible.

[normalperson (Eric Wong)]

I always recommend pointing stderr to a regular file using
IO#reopen after daemonization. Perhaps kwargs may be added
to Process.daemon to encourage this usage?

Process.daemon err: '/path/to/stderr.log', out: '/path/to/stdout.log'