Re: IOC assert by thread CAS-client

[LiangChih Chiang via Tech-talk <tech-talk at aps.anl.gov>]

Thanks for replying.

As you said, it happens very occasionally.

I have not see the assert again since the last time.

On Wed, Sep 30, 2026 at 5:50 AM Michael Davidsaver <mdavidsaver at gmail.com> wrote:

On 9/13/26 8:07 PM, LiangChih Chiang via Tech-talk wrote:

Hello EPICS mates,

I run 9 IOCs on one server.

Their executables are of the same one, each IOC handles different devices.

Only one of them would have the "assert by thread CAS-client" problem.

It happens rarely, maybe once for two weeks.

This is my first time encountering the problem.

Not sure what to do even though have searched previous discussions in the forum.

You are not alone in this.  The assertion failure you report has been seen very occasionally since at least 2009.  It _might_ have been fixed in epics-base 7.0.8, but reports are so rare that it is difficult to be certain.

https://github.com/epics-base/epics-base/issues/985