I've created a C-Watchface on Cloudpebble (which works fine). I'm refactoring it to make the code cleaner.
But I'm getting this Error after the Installation:
[FEHLER] ault_handling.c:78: App fault! {1030da8e-9563-4db9-a08f-b8d6d274e8dd} PC: 0x805ea85 LR: ???
Is there a way to get a Human Readable Error Message? Do I have to use the SDK for that?
Debugging on Pebble is not an easy task sometimes.
What you're experiencing is PebbleOS telling you that the crash was your app's fault, and that the OS has been a good little boy.
Usually what this means is that you are referencing a NULL pointer. I'd recommend using APP_LOG throughout parts of your code to check your pointers and make sure you are not destroying anything if you're still using it.
If you are able to break away from the wool sweater of CloudPebble, which keeps you warm but is always a bit itchy, you can use gdb to set breakpoints and do much more thorough debugging.
Read more here on common runtime errors, or read more here for gdb.
Related
I get a strange Error Message during the Code-Generation Process in STM CubeIDE for a STM32F4 target:
The Details:
I am using STM CubeIDE for an embedded Project with an STM32F405 Microcontroller and I have added the CMSIS Package 5.7.0 to the project, because i need some of the DSP functions. I have allready done this before and never experienced such an error message.
The message pops up during the Code-Generation process, after changing something in the Hardware-Setup with the (built in) CubeMX. It occurs two times during the Code Generation process. I can click on "OK" and it does NOT interrupt the Code Generation process, which seems to finish successfully. I can also compile the project without errors and it seems to work ok.
The Question:
Even though it seems to work properly, I'd like to know: what is this, where does it come from, and what can I do to solve this? I'm affraid that might lead to some unpleasant sleeping bugs or other nasty stuff ...
Has anyone experienced anything simlilar and has an explanation or even a solution for this?
Hint: I have recently update to CubeIDE 1.6.0 - maybe this is a Bug in CubeIDE and not in CMSIS?
What I've done:
I tried to google that, with the keywords:
"SliDtzliTZ&" and the "LogicalParser:syntax error detected in expression for ARM.CMSIS.5.7.0" but did not get any usefull results. Next step was to post the question here ...
Thank you in advance,
Chris
This problem happens with release version 5.7.0. Using any older version available in the official repository solves the problem.
I'm using 5.6.0 now and all is fine.
Edit: Problem persists on 5.8.0.
My application is crashing sometimes while running on real device but the debugger always goes to "main.m" class not where the app is exactly crashing.
Infect console log is also not telling anything about the crash.
I think there is some settings required for debugger but not exactly know the right solution for that. Please help.
Check your device logs for an app type of Unknown. Often, an app will crash by being killed by the OS and an unknown log entry will appear on your device logs showing that your app is the largest memory consumer. To figure out which piece of code is causing the crash, evaluate the UI behavior and add a breakpoint at the appropriate spot (probably where you start working with your data).
Perphaps this could be a memory issue. In that case debugger does not show warning or exceptions. you can use instruments like profile provided in xcode to backtrace the issue. You can also backtrace your issue in Report navigator in xcode.
You can also use apps like crashlytics. Upload your build to crashlytics and then download it from theer and use it. Once it gets crashed .Login on web and check for the crashes. It will show the exact line where got gets crashed.
I hope it can help you.
I am not a programmer. I have some software at work that keeps crashing on me. I used the Visual Studio debugger last time it crashed and found out it was unhandled exceptions.
The first unhandled exception is at 0x0048ADF0 in Cyclone.exe and is an Access violation writing to location 0x00000003.
My research leads me to understand that this is the program trying to write to memory that the process doesn't have permission to.
When running the debug in Visual Studio, after the access violation exception there is a long list of Unhandled exceptions similar to this "...at 0x776C016E (ntdll.dll) in Cyclone.exe: 0x00000000: The operation completed successfully." with different addresses.
Is there any way I can fix this without being a programmer? Some sort of modification to the app files or settings, or a tutorial or something.
No, there is no way. It's not different from asking if you can drive a car without knowing anything about driving.
Sounds like you need to report the problem to the person or company who provided it. What you need to do, however, is give them enough information to understand the problem and fix it. This includes:
what version of their program are you running
which computer operating system (e.g. Windows) and which version (e.g. 7)
precisely what steps you have to take to make the error occur
whether you have changed anything recently, e.g. by installing Windows Updates or changing your anti-virus protection
precise details of any error messages you see, ideally by copy/paste or by providing a screenshot of the erro
anything else you think might help them to help you
Be prepared for them to ask you additional questions, or try some tests to help figure out the cause and a way to solve it.
Your research sounds about right but I don't think there is much anyone here can do to help (unless they happen to work on the application).
Your best bet would be to look for a "Help" or an "About" screen and contact the people who wrote it with this information
I have a WinForms application in which I want to be able to provide an HTML editing feature. So I've translated Lutz Roeder's HTML Writer from C# into VB.NET, and converted it from a windows form into a Custom User Control, which is now hosted in an MDI child form.
It all works fine until I close the parent MDI, in which case it crashes, and I cannot trap the exception.
I've isolated the editor control into a little vanilla WinForms app that doesn't do anything else, and verified that the problem still occurs.
I've also switched on Unmanaged Code Debugging (I'm using VS2010, compiling for x86 and Framework 3.5), and all I get is this:
Windows has triggered a breakpoint in HtmlEditorMdi.exe.
This may be due to a corruption of the heap, which indicates a bug in HtmlEditorMdi.exe or any of the DLLs it has loaded.
This may also be due to the user pressing F12 while HtmlEditorMdi.exe has focus.
The output window may have more diagnostic information.
The only thing other thing I've noticed is that if I leave a long interval after opening the form containing the editor, it doesn't crash.
What I'd really appreciate is some ideas about how to go looking for this problem. It may be of course that I've made a mistake in the C# to VB conversion, but I'm struggling to know where to look.
Edit:
I've run the app with the debugger attached, and it doesn't give me anything useful.
All I get is the Windows 'Application has stopped working' message, with this in the problem details:
Problem signature:
Problem Event Name: APPCRASH
Application Name: HtmlEditorMdi.exe
Application Version: 1.0.0.0
Application Timestamp: 4cfb74c7
Fault Module Name: mscorwks.dll
Fault Module Version: 2.0.50727.4952
Fault Module Timestamp: 4bebd49a
Exception Code: c0000005
Exception Offset: 000022b5
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 2057
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
I can see that it's an access violation, but even if I go Debug > Exceptions > Win32 Exceptions, and tick c0000005, I don't get anything useful when it breaks - just 'no source available'.
The first message you quoted is produced by the Windows heap manager when it discovers that the internal heap structure is destroyed. It displays that diagnostic when it sees that a debugger is attached. The 2nd quoted block is what happens when it bypasses the diagnostic (no debugger attached), it bombs on a hardware exception when it tries to release memory in the corrupted heap anyway.
The trouble with heap corruption is that the real damage is done a long time before the diagnostic is generated. You can see a stack trace leading up to the diagnostic in the Call Stack window, you'll need to enable the Microsoft symbol server to get meaningful symbols for the Windows functions. But it won't tell you anything useful about the code that really caused the damage, that requires a time machine.
This kind of heap corruption is invariably caused by unmanaged code. The AccessViolation exception is a well known scourge to C/C++ programmers and a very large reason why managed code became popular. While Lutz' source code is all managed, it contains a lot of P/Invoke and COM interface declarations. There is no good way to debug them, you don't have the source code.
Getting one of those declarations subtly wrong when you converted them to VB.NET is certainly one way this could happen. It could also well be that the bug was always there but reared its ugly head just now. Lucky you. Btw, I don't think the code is 64-bit clean, force it to run in 32-mode for a possible quick fix. For your main EXE project: Project + Properties, Compile tab, scroll down, Advanced Compile Options, Target CPU = x86. This is only relevant if you run on a 64-bit version of Windows.
Other than that, I'd recommend you just use the C# project as-is. Mixing languages in a solution is a very well supported scenario in .NET.
The windbg debugger is the "big gun" for this sort of problem. It can frequently give you clues by telling you about handled exceptions etc. The only problem with it is that it's not easy to use and has a very high learning curve.
A WPF application. Debugging. Stop on break point.
After few seconds Visual Studio (2008) spontaneously aborts the application execution.
It is never mind what I do after stop on break point: even if I do nothing.
With very simple test WPF application everything is OK with debugging.
Any ideas?
When an application aborts that quickly without warning it's usually the result of a stack overflow in the process. This makes it difficult (if even possible) to do tear downs operations like bringing up Dr Watson.
One thing I didn't quite understand is if the application or VS is suddenly stopping.
If it's the application there is likely a StackOverflow occurring in such a way that VS can't trap the exception. Try disabling Just My Code debugging, turn off implicit function evaluation and break on first chance exceptions. That should hopefully help reveal the problem.
The problem was solved.
To solve the problem the debug settings must be changed:debug->exceptions: and check on exceptions boxes (I checked on C++ and CLR).
(source: ggpht.com)
Result: I can see exception that I didn't see before and I can normally debug my application.
The reason was incorrect vcshost.config file name (my fault).