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<== Date ==> <== Thread ==>

Subject: Re: Fanout to Sub Records in a Different IOC Causes Core Dump
From: Andrew Johnson <anj@aps.anl.gov>
To: "Poff, Mark A" <mark.a.poff@boeing.com>, "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Thu, 9 Oct 2014 14:53:33 -0500
Hi Mark,

On 10/07/2014 02:55 PM, Poff, Mark A wrote:
> On the EPICS project here we’ve run into an issue which we believe /may/
> point to a bug with fanout records and CA links - and we’re wondering if
> anybody else has seen this behavior.

I have just checked the 3.14 version of the fanout record, it does
support forward-linking through Channel Access with no problems for me.
If you can replicate your crash using 2 simple IOC databases without any
subroutine records I would be very happy to test your databases and try
to replicate your results.

If you can't, take a look at how much stack space your Process1_routine
subroutine needs, running out of stack space is one possible cause for
this kind of strange behaviour in addition to the usual kinds of
problems. A full stack trace for all threads when the crash happens
would also help us help you (type 'thread apply all bt' in gdb).

- Andrew

References:
RE: Fanout to Sub Records in a Different IOC Causes Core Dump Poff, Mark A

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