warnings from backtrace

Gary E. Miller gem at rellim.com
Fri Jun 2 20:18:14 UTC 2017

Yo Hal!

> > The first thing that catchTrap does is
> > call msyslog and we already know that works since it prints the
> > seccomp-worked message.  
> Yup.  Sort of, I have seen weirdness in that area.  mysyslog()
> will behave differently inside a trap.  Many syscalls, and lib calls,
> are not legal in a trap.

I have built some private test cases.  I can confirm that depending on
where a trap occurs in ntpd that doing mysyslog() inside the trap will
silently produce no output.

mysyslog() is doing fflush()s so the issue is not obvious.

I can also duplicate this problem with a simple assert() in some

The easy solution would be to just fall back to STDERR in assert() and
traps, but I'm not ready to give up on mysyslog() just yet.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 488 bytes
Desc: OpenPGP digital signature
URL: <https://lists.ntpsec.org/pipermail/devel/attachments/20170602/f9b78f2b/attachment.bin>

More information about the devel mailing list