[vscode-gdb-debug] gdb stuck at launch - any command gives "Unable to perform this action because the process is running"

Environment

• OS and version: Alma Linux 8
• VS Code: 1.99.3
• C/C++ extension: 1.25.3
• C/C++ extension pack: 1.3.1
• GDB version: 14.2

Bug Summary and Steps to Reproduce

Bug Summary:

I'm using VS Code for C++ for around 6 months. But so far, I have not tried gdb from vs code. Ealier in emacs, I used to debug using gud-gdb interface. So, I tried defining a launch.json for my application. However, I have not been able to successfully setup gdb with vs code.

We have a large C++ code base. I just want gdb to get launched and load the binary (not start the run). This is because, I have a gdb python script that I use to setup PATH and LD_LIBRARY_PATH depending upon MYPROG_HOME env variables and I want to use that. Also I need to set args (differently with different switches depending upon my test case) before running the program.

I have tried following launch.json -

{
    "version": "0.2.0",
    "configurations": [

        {
            "name": "GDB Debug Manual Mode",
            "type": "cppdbg",
            "request": "launch",
            // "program": "${BUILD_PATH}/bin-linux64/myprog-G",
            "program": <full-path to myprog-G>,
            "cwd": "<test dir where I want to debug>",
            "MIMode": "gdb",
            "miDebuggerPath": "<path to gdb>",
            "stopAtEntry": true,
            "stopAtConnect": true,
            "launchCompleteCommand": "None",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
            ]
        }

    ]
}

But when I invoke gdb from the Run and Debug option, gdb prompt comes up. But when I try any gdb commands (like show env MYPROG_HOME), it gives me below error message: -

Unable to perform this action because the process is running.

Please let me know what I may be missing because of which it is not working. Let me know if I can any additional diagnostics to understand why it is stuck.

Debugger Configurations

Please refer the bug summary section above.

Debugger Logs

I tried enabling logging and when the gdb prompt comes, if I type "show env PATH", I get following o/p -


show env PATH
<--   C (evaluate-25): {"command":"evaluate","arguments":{"expression":"show env PATH","context":"repl"},"type":"request","seq":25}
--> R (evaluate-25): {"type":"response","request_seq":25,"success":false,"command":"evaluate","message":"Failed to handle EvaluateRequest","body":{"error":{"id":1105,"format":"Unable to perform this action because the process is running."}},"seq":215}
Unable to perform this action because the process is running.

Other Extensions

No response

Additional Information

No response

Inizia con la configurazione launch.json fornita e l’entry point cppdbg di VS Code Run and Debug, quindi esamina il log GDB MI alla ricerca della richiesta evaluate che segnala che il processo è in esecuzione. Il lavoro è completato quando viene determinato se il comportamento è causato dalla configurazione o dall’estensione e viene documentata una configurazione riproducibile con la diagnostica aggiuntiva necessaria per una correzione.