Re: pvAccess assert error

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 2/28/24 10: 49, Mark Rivers wrote: > Hi Michael, > > I sent a message to both tech-talk and core-talk at 4: 31 PM CST yesterday. > > This is the tech-talk message: > https: //urldefense. us/v3/__https: //epics. anl. gov/tech-talk/2024/msg00292. php__;!!G_uCfscf7eWS!cTakrEuoGbhYwfDYSlKBPzPdSOuLkTGHf9FCvVRrDNNeJlGdWKPm8792ya3ZscNlaVY91zgwXjK4H1owUPJk7dbBwA$

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On 2/28/24 10:49, Mark Rivers wrote:
> Hi Michael,
> 
> I sent a message to both tech-talk and core-talk at 4:31 PM CST yesterday.
> 
> This is the tech-talk message:
> https://urldefense.us/v3/__https://epics.anl.gov/tech-talk/2024/msg00292.php__;!!G_uCfscf7eWS!cTakrEuoGbhYwfDYSlKBPzPdSOuLkTGHf9FCvVRrDNNeJlGdWKPm8792ya3ZscNlaVY91zgwXjK4H1owUPJk7dbBwA$
> 
> This is the core-talk message:
> https://urldefense.us/v3/__https://epics.anl.gov/core-talk/2024/msg00042.php__;!!G_uCfscf7eWS!cTakrEuoGbhYwfDYSlKBPzPdSOuLkTGHf9FCvVRrDNNeJlGdWKPm8792ya3ZscNlaVY91zgwXjK4H1owUPJqS-zqNg$

Ah, this is an issue with MSVC debug builds which Freddie Akeroyd already found and fixed.

This fix is included in pvAccessCPP 7.1.7, which is bundled in epics-base 7.0.8.


> However, I did not actually then receive the message from tech-talk.  And it seems like maybe you did not either?  It seems like tech-talk archived it but did not send it?
> 
> Mark
> 
> 
> -----Original Message-----
> From: Michael Davidsaver <mdavidsaver at gmail.com>
> Sent: Wednesday, February 28, 2024 12:31 PM
> To: Mark Rivers <rivers at cars.uchicago.edu>
> Subject: Re: pvAccess assert error
> 
> Hi Mark,
> 
> Am I being dense today?  I only see a screen capture attached to your original mail.
> 
> 
> On 2/28/24 10:25, Mark Rivers wrote:
>> Hi Michael,
>>
>> Thanks for the reply.  I sent the full stack trace yesterday.
>>
>> Mark
>>
>>
>> -----Original Message-----
>> From: Michael Davidsaver <mdavidsaver at gmail.com>
>> Sent: Wednesday, February 28, 2024 12:20 PM
>> To: Mark Rivers <rivers at cars.uchicago.edu>
>> Cc: tech-talk at aps.anl.gov
>> Subject: Re: pvAccess assert error
>>
>> On 2/26/24 16:37, Mark Rivers via Tech-talk wrote:
>>> Folks,
>>>
>>> I am running a new areaDetector camera.  It generates frames that are 4096x3072 pixels, 8-bit.  I can collect data from the camera at 150 frames/s using a BitFlow CoaXSpress card with no problems.  This is on a Windows PC.
>>>
>>> However, when I try to use pvAccess to read the data from the NDPluginPva plugin I get an assert error in pvAccess in my Windows application.  The error message is in the attachment.
>>>
>>> This happens when I use the ImageJ pvAccess plugin, and also when I use the following Linux command on another machine:
>>>
>>> $ pvmonitor 13BF1:Pva1:Image > /dev/null
>>>
>>> Any idea what the problem could be?  This is base 7.0.7.
>>
>> At a guess, maybe another size()==0 situations as with:
>>
>> https://urldefense.us/v3/__https://github.com/epics-base/pvDataCPP/issues/50__;!!G_uCfscf7eWS!cTakrEuoGbhYwfDYSlKBPzPdSOuLkTGHf9FCvVRrDNNeJlGdWKPm8792ya3ZscNlaVY91zgwXjK4H1owUPIcHYY7_w$
>>
>> If so, a full stack trace should point at the offending code.
>>
>