Re: MEDM crash when "Plot Array" of sscan detector with large value

[Tim Mooney <mooney@aps.anl.gov>]

Lewis,  Just for completeness, I see this on my system as well.

I could get the sscan record to avoid posting PV's that contain
NaN's, but I have a lot of other stuff that also gets plotted,
and that also can post NaN's, so my plan is to sit tight until
we know whether/when MEDM will be fixed.

Tim

On 7/16/2010 5:11 PM, J. Lewis Muir wrote:
> MEDM crashes if I open scan_full.adl, execute an sscan scan which
> produces large detector values for the first detector, wait for it to
> complete, and then open scanDetPlot.adl by clicking on the 01 button in
> the Detectors section and choosing "Plot Array".  Attached is a GDB
> stack trace in case it is useful.
>
> To reproduce this, load an sscan scan.db database like this
>
>    dbLoadRecords("$(SSCAN)/sscanApp/Db/scan.db",\
>      "P=ioc23:,MAXPTS1=8000,MAXPTS2=1000,MAXPTS3=10,MAXPTS4=10,\
>      MAXPTSH=8000")
>
> , and load this record
>
>    record(ai, "ioc23:BigNumber") {
>      field(VAL, "1e38")
>      field(PINI, "YES")
>    }
>
> into an IOC.
>
> Open the scan_full.adl screen with MEDM:
>
>    medm -x -macro 'P=ioc23:,N=1,S=scan1' scan_full.adl
>
> In the Positioners section, enter "time" in the Read field and 1.0 in
> the "STEP SIZE" field (which should set the number of points to 1).
>
> In the Detectors section, enter "ioc23:BigNumber" in the 01 detector field.
>
> Click the SCAN button to execute the scan.
>
> Click the 01 detector button and choose "Plot Array".  MEDM will crash.
>   Choosing "Plot From Scalars" will also make it crash.
>
> Maybe this has something to do w/ how the large double gets converted
> into a float??
>
> Environment:
>
> * RHEL 5.5 or Mac OS X 10.5.8
> * EPICS host architecture of darwin-x86 or linux-x86_64
> * EPICS Base 3.14.11 (+ Known Problems patches)
> * synApps 5.5 (+ asyn 4-13-1, autosave 4-7, mca 6-12-1)
> * MEDM 3.1.4
>
> Thanks,
>
> Lewis

--
Tim Mooney (mooney@aps.anl.gov) (630)252-5417
Software Services Group, Advanced Photon Source, Argonne National Lab.