LLDB Crash with exit code 139 on macOS 15.5 when launching C++ debug session

[Subham-KRLX]

Environment

• OS and version: macOS 15.5 (Build 24F74)
• VS Code: 1.90.0
• C/C++ extension: 1.19.9
• OS and version of remote machine (if applicable): Not applicable
• GDB / LLDB version: lldb-1900.0.39.0

Bug Summary and Steps to Reproduce

Bug Summary:
LLDB crashes with exit code 139 when launching a basic C++ program from VS Code using the C++ extension with MIMode set to "lldb".

Steps to reproduce:

1. Install VS Code with the C++ extension on macOS 15.5.
2. Create a simple C++ program (e.g., main.cpp printing "Hello, LLDB!").
3. Compile it using clang++ main.cpp -o main.
4. Use the following launch.json configuration with "MIMode": "lldb".
5. Run the debugger.
6. LLDB crashes with exit code 139.

Debugger Configurations

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "LLDB Test",
      "type": "cppdbg",
      "request": "launch",
      "program": "${workspaceFolder}/main",
      "args": [],
      "stopAtEntry": false,
      "cwd": "${workspaceFolder}",
      "environment": [],
      "externalConsole": false,
      "MIMode": "lldb",
      "miDebuggerPath": "/usr/bin/lldb",
      "setupCommands": [
        {
          "description": "Enable pretty-printing for LLDB",
          "text": "settings set target.inline-breakpoint-strategy always",
          "ignoreFailures": true
        }
      ]
    }
  ]
}

Debugger Logs

"logging": {
  "engineLogging": true,
  "trace": true,
  "traceResponse": true
}

Other Extensions

Only C/C++ and CodeLLDB extensions are enabled. The issue persists even with all other extensions disabled.

Additional Information

This issue appears to be the same as #13496. I followed all the steps to reproduce and used the latest version of the extension. The program runs correctly via terminal (./main), but crashes only via the debugger.

[github-actions]

Thank you for reporting this issue. We’ll let you know if we need more information to investigate it. Additionally, if you're working with GDB/LLDB, please note that the code is open source at https://github.com/microsoft/MIEngine/wiki/Contributing-Code . Your contributions are always welcome and appreciated.

[Subham-KRLX]

macOS : 15.5 (Build 24F74)
VS Code : 1.90.0
C/C++ ext.: 1.19.9
LLDB : lldb-1900.0.39.0 (lldb --version)
Launch.json:
[paste your launch.json]
Repro steps: same as described in the issue
Crash detail: exit code 139 (SIGSEGV)

[Subham-KRLX]

I've opened a PR (#13704) that adds documentation for this crash scenario and includes a potential workaround.

The issue seems to consistently reproduce with LLDB on macOS 15.5 when launching C++ debug sessions via VS Code. If others encountering this can verify or provide feedback on the workaround mentioned in the PR, it would be very helpful.