Heisenbug: Subsequence call, different file, LabVIEW

[SPM]

Actually LabVIEW does start -- but it conks in my initialization code with a fairly deep call stack.

Putting together a small (and non-proprietary) example is not simple. Will work on it some more.

- Steve.

[RayFarmer]

Hi,

Is this running on a deployed system using an UI or in the SeqEditor?

Regards

Ray Farmer

[SPM]

In the Seq Editor.

- Steve.

[RayFarmer]

Hi,

Looking at your attached rtf file, you need to make sure any references you spawn off the Reference you pass to the code module must be released/closed before you return back to TestStand.

eg If you pass SequenceContext into your code module and you create an Engine reference by using SequenceContext.Engine and then create a Globals reference, you must make sure you close the Globals reference and the Engine reference after you have finished with them and before you exit the code module. You dont need to close the SequenceContext as TestStand will release that.

Look at Using LabVIEW with TestStand Appendix C - 6 for an example

Regards

Ray Farmer

[SPM]

Hi, Ray,

The conk happens before LV returns to TestStand from the first call.

- Steve.

[RayFarmer]

Hi Steve,

So what are you doing in this first LabVIEW call. Are you talking to any hardware?

Regards

Ray

[SPM]

Hi, Ray,

Not at that time. I'm building a fairly complicated LVOOP object structure as part of the hardware configuration. 

BTW, I've submitted the problem to NI. I still haven't figured out how to cut down the crash to something that would be disclosable on a public forum. But I've made progress, and I'll keep trying.

- Steve.

[RayFarmer]

Hi Steve,

Can you step into the LabVIEW code and identify a point just before it crashes?

Regards

Ray

[SPM]

Hi, Ray,

Have done so. It crashes just when it tries to invoke a method to configure a certain newly created sub-object. I can't even take a breakpoint at the start of the configure VI; the crash happens before it even starts.

No rhyme or reason to it; the code works fine elsewhere and under other conditions.

- Steve.

[RayFarmer]

HI Steve,

So if you take it out or not create the object does it not crash?

Regards

Ray