First off, I know that segfaults are raised no matter if you like them or not. However, I would like to ignore them in debugging.
For a class, I am deliberately raising segfaults and handling them in a handler. I would like to ignore the ones that I am handling (or all of them) as they make debugging difficult.
In settings, in Debug (On Task Errors) , there is a drop down menu to select, "control what to do when errors are encountered" . Select "Debug Anyway" option: Please see the screen shot:
I am using VS Code version 1.49.2
You can go to the debug (or Run) tab on the left side of your VS code, and go down to where it says breakpoint.
![The breakpoint]]1
And if you want your VS code to catch the unhandled exception, you can disable this All Exceptions.
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How to use a debugger in DEV C++? I am finding problems resolving run-time errors in my C code written in DEV C++. How can the debugger help me resolve the run-time errors?
First, make sure you are using a project.
Then go to Project Options - Compiler - Linker and set Generate debugging information to "yes", and make sure you are not using any optimization options (they're not good for debug mode). Also check the Parameters tab, make sure you don't have any optimization options (like -O2 or -O3, but -O0 is ok because it means no optimization) or strip option (-s).
After that, do a full rebuild (Ctrl-F11), then set breakpoint(s) where you want the debugger to stop (otherwise it will just run the program). To set a breakpoint on a line, just click on the gutter (the gray band on the left), or press Ctrl-F5.
Now you are ready to launch the debugger, by pressing F8 or clicking the debug button. If everything goes well, the program will start, and then stop at the first breakpoint. Then you can step through the code, entering function calls, by pressing Shift-F7 or the "step into" button, or stepping over the function calls, by pressing F7 or the "next step" button. You can press Ctrl-F7 or the "continue" button to continue execution till the next breakpoint. At any time, you can add or remove breakpoints.
When the program stopped at a breakpoint and you are stepping through the code, you can display the values of various variables in your program by putting your mouse over them, or you can display variables and expressions by pressing F4 or the "add watch" button and typing the expression.
I got the same issue Although selecting the break points and select debug, debugging not working. I solved the problem as below:
Be sure that project is opened.
Display the project panel:
View>Project /Class Browser, Select Debug tab from the project panel
Set the base compiler:
Project > Project Options > Compiler > Linker
select the base compiler as “TDM-GCC 4.9.2 64 bit Debug”
Set the “Generate debugging information” as YES
Execute > Rebuild
To debug:
Execute > Toggle Breakpoint, then set the breakpoints.
Execute > Debug
Also check that at the menu bar base compiler is displayed as “TDM-GCC 4.9.2 64 bit Debug”
After selecting rebuild if directly breakpoints are set without selecting Toggle BreakPoints debugging is not started. Before selecting debug, selecting Toggle Breakpoint and then setting breakpoints solved the debug problem in my case.
I encounter some errors when running a dpdk-based application. I find the error occurs when invoking rte_eth_dev_configure() function provided by dpdk library. The error code is -22. However, I want the application to show more debug information so that I can quickly focus on the error part.
I did RTFM and modified $RTE_SDK/build/.config. I turned RTE_LIBRTE_ETHDEV_DEBUG to be y. But It didn't work. Where does rte_vlog() function put log messages?
Would you like to help me? Any suggestion is appreciated!
You should also change the default log level, otherwise all the debug messages will be compiled out during the compilation, i.e.:
RTE_LOG_LEVEL=RTE_LOG_DEBUG
RTE_LIBRTE_ETHDEV_DEBUG=y
Please also have a look at EXTRA_CFLAGS. You might also want to add the debug symbols and disable optimizations, i.e.:
make EXTRA_CFLAGS="-O0 -g" ...
I add CONFIG_ RTE_LIBRTE_ETHDEV_DEBUG=y to the ${RTE_SDK}/config/defconfig_{RTE_TARGET} config file and rebuild the target. It works.
I've been using Haxe for a while and I'm debuging with the Windows target (OpenFL).
When I put a try/catch somewhere it just says for example "Null object reference" - it doesn't say the line number and the class, so I have to keep putting traces to find in which line it has thrown the error.
Can someone help me?
You might need to enable stack traces by adding the following define to your project.xml file if you're compiling in release mode:
<haxedef name="HXCPP_STACK_LINE" />
Also, you won't be able to catch null reference exceptions or get stack traces for them unless the following is defined (for performance reasons):
<haxedef name="HXCPP_CHECK_POINTER" />
With these two, you should see a stack trace in FlashDevelop's Output panel.
You can find some good info on these flags and hxcpp debugging in general here. You might also want to check out the crashdumper library.
Can I get Visual Studio to break on any Debug.WriteLine?
I have a Debug.WriteLine that is just writing a number and I cannot find it to turn it off.
I have it down to one method call but even holding F11 for 20 minutes did not get to the mutant Debug.WriteLine
Use Debug > New Breakpoint > Break at Function. Enter "System.Diagnostics.Debug.WriteLine" for the function name. That sets 5 breakpoints, one for each overload.
Do consider that it might not be generated by managed code, the default trace listener that normally displays Debug.WriteLine() output uses a debugger function (OutputDebugString) to produce output. That function may also be used by native code.
I have stage server which I use it with Xmanager. In the stage sever,after whatever I choose using the mouse,a "^C" will appear automatically after $.For example ,I choose "system/" with mouse,and a "^C" soon appears in the command line.
It never happened before until yesterday I tried "Shift+Ctrl+V" which means "copy" after I choosing the command line which I wanted to copy, but it didn't work although I tried several times.And then the problem I described existed.
It's really confusing,and I don't whether "^C" has any bad effect.
How to resolve this problem?Anyone knows why it happened?
The reason causing this problem is that I opened youdao dictionary simultaneously with its function of catching words on the screen on. Just close it and the problem won't happen again. I don't know why maybe it has something to do with the software's compatibility.