Re: EPICS database macro warning

[Mark Rivers <rivers@cars.uchicago.edu>]

You didn't say what version of EPICS base you are using.


________________________________
From: tech-talk-bounces@aps.anl.gov <tech-talk-bounces@aps.anl.gov> on behalf of Amien Crombie <acrombie@tlabs.ac.za>
Sent: Wednesday, January 31, 2018 3:28 AM
To: EPICS Tech-Talk
Subject: EPICS database macro warning


Hi

I inadvertently stumbled upon this strange 'bug' in my ioc.db file

I had the following record:

    record(subArray,    "$(uid):attenuator")
    {
            field(INP,        "$(uid):raw")
            field(NELM,        "9")
            field(MALM,        "9")
            field(INDX,        "9")
            field(FTVL,        "LONG")
         #   field(FLNK,        "$(dd):getX")

     }

Now the field 'FLNK' is commented out and I have deleted my macro $(dd) in my substitution file.

When I run my IOC, I get the following warning

macLib: macro dd is undefined (expanding string #    field(FLNK, "$(dd)")

Warning: 'db/dbExample1.db' line 16 has undefined macros


So the comment (#) still evaluates the macro, even if the documentation says it ignores the whole line. Of course if the macro exist it runs without the warning.

Not a critical issue but can be misleading.

Thanks

Amien