 Broken code with no broken arrow., Strange bug? |
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 Nov 16 2007, 12:37 AM
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 Confucius say: Crowded elevator always smell different to midget   Admin  Posts: 2402 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1 
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Not sure what causes this but I've experienced this several times lately.
I run a toplevel VI several times and somewhere I get an error on the error cluster. So I decide to start debugging by opening up the subVI's. When I open one of the subVI's I notice that it has a broken run arrow and now I also notice that my toplevel VI has a broken run arrow. How is it possible for LabVIEW to run broken code? The only thing I can think of is that the broken code has not propogated to the current running application instance until I open it up. Not sure why however since I only have one instance. I have the project environment open too. -------------------- Thank You
Michael Aivaliotis - Follow me on Twitter - My Personal Blog Search the LabVIEW Web - Build the LabVIEW Web - Got VIPM? 
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Nov 16 2007, 12:37 AM
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Nov 16 2007, 01:42 AM
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 Very Active Member Posts: 230 Joined: 6-March 05 From: Mountain View, CA Member No.: 1764 Using LabVIEW Since:1994 LV:8.5 ,. ,.
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Do you have a conditional disable structure on the diagram or in a subvi? If you have changed the conditional symbol definition in your project, then the same VI could definitely be working inside the project but broken outside of it.
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Nov 16 2007, 07:31 AM
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#3
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Confucius say: Crowded elevator always smell different to midget Admin Posts: 2402 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1
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QUOTE (jdunham @ Nov 15 2007, 05:42 PM)  Do you have a conditional disable structure on the diagram or in a subvi? If you have changed the conditional symbol definition in your project, then the same VI could definitely be working inside the project but broken outside of it. No, it's not that. -------------------- Thank You
Michael Aivaliotis - Follow me on Twitter - My Personal Blog Search the LabVIEW Web - Build the LabVIEW Web - Got VIPM?
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Nov 16 2007, 04:45 PM
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#4
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 Very Active Member Posts: 91 Joined: 7-March 07 From: Munich Member No.: 7932 Using LabVIEW Since:2001 LV:8.6 ,8.5.1 ,7.1.1 
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Did you try Ctrl-Shift-Run on your top level VI?
Was the run arrow still unbroken after this? -------------------- The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.
Isaac Asimov
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Nov 22 2007, 01:34 AM
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#5
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Confucius say: Crowded elevator always smell different to midget Admin Posts: 2402 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1
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Well, it happened again. Check this out. There's a broken wire on the diagram but the arrow's intact.
Running the VI crashes LabVIEW. 
Attached thumbnail(s)
-------------------- Thank You
Michael Aivaliotis - Follow me on Twitter - My Personal Blog Search the LabVIEW Web - Build the LabVIEW Web - Got VIPM?
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Nov 22 2007, 03:07 AM
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#6
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Extremely Active Member Posts: 399 Joined: 26-March 06 From: Victoria, BC Canada Member No.: 4568 Using LabVIEW Since:1998 LV:8.6 ,8.5.1 ,8.2.1
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Are you working in XP or Vista?
-------------------- The power of NeuroCARETM
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Aug 20 2008, 06:15 AM
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#7
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Confucius say: Crowded elevator always smell different to midget Admin Posts: 2402 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1
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Here's a video that shows how you can have a broken VI on the diagram of a non-broken VI. No I'm not using a disable structure. If I click on the run arrow of the caller it breaks and shows the error list. The arrow then stays broken.
Attached File(s)
-------------------- Thank You
Michael Aivaliotis - Follow me on Twitter - My Personal Blog Search the LabVIEW Web - Build the LabVIEW Web - Got VIPM?
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Aug 20 2008, 06:42 AM
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#8
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 LV R&D Envoy NI  Posts: 1273 Joined: 15-August 06 From: Austin, TX Member No.: 5877 Using LabVIEW Since:2000 LV:8.6 ,6.0 ,.
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You have filed a CAR, right?
-------------------- "A VI outside a class is a gun without a safety. Data outside a class is a target."
--- A message from LabVOOP R&D
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Aug 20 2008, 12:36 PM
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#9
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 Certified Kool-Aid Kid Premium Member  Posts: 1188 Joined: 6-December 02 From: Pittsburgh PA USA Member No.: 29 Using LabVIEW Since:1998 LV:7.1 ,. ,.
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QUOTE (Aristos Queue @ Aug 20 2008, 02:42 AM) You have filed a CAR, right? Have you ever tried to file a CAr without being able to reproduce the issue on demand? I have seen a couple of those myself, also working LabVIEW 8.5. I'm not using globals so if its the same bug I have seen it is not due them. THe other observation that I can add is that a really fuzzy general type observation. I would swear (if pressed) that code changes are not propagating to all of the VI's that are not open. I say this because I work with a tree.VI open and after amking changes (but before running) I save everything (from tree.vi save all) then close the tree.vi. Backup then re-open and test the code. WHen closing the tree.vi, I see VI's that want to be saved. As a result I ahve resorted to an old habit of opening and closing the tree a couple of times to make sure all of the changes get propogated. Just reporting what I have ben seing. Ben
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Aug 20 2008, 03:27 PM
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#10
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 Very Active Premium Member Posts: 91 Joined: 12-November 04 From: Gatineau, Quebec, Canada Member No.: 1022 Using LabVIEW Since:2001 LV:8.6 ,8.5.1 ,.
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Hey Mike,
I think I found your Broken Arrow. Somehow it found its way into my VI. 
I seem to be experiencing the opposite of your problem. I have a broken arrow and 0 errors and warnings listed in the error list.  Cheers, Heiko
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Aug 22 2008, 08:14 AM
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#11
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Confucius say: Crowded elevator always smell different to midget Admin Posts: 2402 Joined: 13-October 02 From: Planet Earth Member No.: 2 Using LabVIEW Since:1994 LV:8.5 ,8.2.1 ,7.1.1
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QUOTE (neB @ Aug 20 2008, 05:36 AM) Have you ever tried to file a CAr without being able to reproduce the issue on demand? I agree. Reporting this to NI is a futile exercise. Not reproducible at all. QUOTE (neB @ Aug 20 2008, 05:36 AM) I would swear (if pressed) that code changes are not propagating to all of the VI's that are not open. I say this because I work with a tree.VI open and after amking changes (but before running) I save everything (from tree.vi save all) then close the tree.vi. Backup then re-open and test the code. WHen closing the tree.vi, I see VI's that want to be saved. As a result I ahve resorted to an old habit of opening and closing the tree a couple of times to make sure all of the changes get propogated. Ben, there's a thread for this issue here. -------------------- Thank You
Michael Aivaliotis - Follow me on Twitter - My Personal Blog Search the LabVIEW Web - Build the LabVIEW Web - Got VIPM?
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