Eric, " In one case, I clicked the Continue button after each successive error dialog. " Did you note the method, line number and type of error? That's exactly the information you need. And - was that on the server or on a client?
These sorts of problems are incredibly frustrating until you get a handle on it. But if you are getting error messages there is information there that will help you. On Fri, Sep 10, 2021 at 12:27 PM Eric Asadoorian via 4D_Tech < 4d_tech@lists.4d.com> wrote: > Kirk, > > At the moment, I added some additional logging code to the ON ERR CALL > handler. My first problem is that I don't have any idea what method is > throwing the error. Unfortunately, it is not occurring often enough. I > have been dealing with it for about 2 months. Given that it only occurs > roughly 12 days from a fresh application launch, I haven't experienced > enough to get a sense of where it is happening. Once the error appears it > does not necessarily crash the application. In one case, I clicked the > Continue button after each successive error dialog. The error code remains > the same. I assumed it was in a for loop, then it just crashed. Another > time, I kept clicking Continue and it never ended (after 70 times I gave up > and hit Abort). Therefore, in that instance it was likely in a repeat > until and the until boolean never went True. These are just guesses. I am > presently hoping that there will be more information available in a log > file the next time it occurs. > > Thanks for your assistance. > > Eric > On Sep 9, 2021, at 8:20 PM, Kirk Brooks via 4D_Tech wrote: > > > Eric, > > Sounds like some sort of run time error. Most likely caused when some > > unexpected data type is attempting to be read into an array (one of the > > arrays managed by a pointer and gets the warning). Running interpreted 4D > > is very robust as fixing these sort of data type errors but running > > compiled it throws an error instead. This is why you won't catch it > > interpreted. > > > > If it's consistently happening in a particular method then add more error > > checking to that method until you figure out what's going on. > > > > If it's happening in different methods are these methods managing writing > > to arrays directly? If so can you write a method to manage that write > > operation and use this method in all the places the arrays are written > to? > > The idea is to get the code that's likely to throw the error in one > place. > > > > Once you figure out what this edge case is you can decide the best way to > > either protect against it or manage the incoming data to prevent it. > > > > On Thu, Sep 9, 2021 at 9:06 AM Eric Asadoorian via 4D_Tech < > > 4d_tech@lists.4d.com> wrote: > > > >> Hello. > >> > >> Environment is v17.5 64-Bit in either OS X Sierra or Mojave (latest > >> versions). The database application does not experience much in the > way of > >> user interaction. It is mainly responding to requests over TCP. It > runs > >> 24/7. > >> > >> Compiler presents no errors, several warnings, but nothing new that > hasn't > >> been seen before in earlier versions (v16, v15, back to v13). Warnings > are > >> mostly of the sort where pointers are used for arrays and it isn't > clear if > >> the data types will be correct at runtime. These methods run often and > >> have not presented a problem. > >> > >> Application can run for anywhere from 6 days to several weeks and no > >> issues. Then a runtime error will pop up citing Error 48 (I believe > that > >> it says Syntax Error when looking at detail in Application Process, but > not > >> sure, I will need to take a screenshot next time). > >> > >> This has occurred randomly without any real repeatable activity that I > can > >> surmise. I decided to let the application run in interpreted mode > hoping > >> that the error will surface and I can identify the offending code in the > >> debugger. So far, nearly 2 weeks in and no error. Therefore, I am > >> reaching the conclusion that this error will likely only show up in a > >> compiled database. > >> > >> I did not think a Syntax Error could occur in a compiled database. I am > >> guessing that it is related to a text value being passed to a 4D command > >> that would not be known in advance. However, I can't find anything > that is > >> in error. I checked New Process, Execute on Server, and semaphore > related > >> commands thus far. > >> > >> Where would be a good place to start looking? Has anyone had such an > >> experience before? Is there a way to identify more clearly what code is > >> executing when the error appears? > >> > >> Thank you, > >> Eric Asadoorian > >> > >> ********************************************************************** > >> 4D Internet Users Group (4D iNUG) > >> New Forum: https://discuss.4D.com > >> Archive: http://lists.4d.com/archives.html > >> Options: https://lists.4d.com/mailman/options/4d_tech > >> Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > >> ********************************************************************** > > > > > > > > -- > > Kirk Brooks > > San Francisco, CA > > ====================== > > ********************************************************************** > > 4D Internet Users Group (4D iNUG) > > New Forum: https://discuss.4D.com > > Archive: http://lists.4d.com/archives.html > > Options: https://lists.4d.com/mailman/options/4d_tech > > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > > ********************************************************************** > > ********************************************************************** > 4D Internet Users Group (4D iNUG) > New Forum: https://discuss.4D.com > Archive: http://lists.4d.com/archives.html > Options: https://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > ********************************************************************** -- Kirk Brooks San Francisco, CA ====================== ********************************************************************** 4D Internet Users Group (4D iNUG) New Forum: https://discuss.4D.com Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************
