Debugger crashes with "autoAttachChildProcesses": true set when debugging the extension host and a debugged child process exits quickly

[segevfiner]

Describe the bug
The debugger crashes with "autoAttachChildProcesses": true set when debugging the extension host and a debugged child process exits quickly.

To Reproduce
Steps to reproduce the behavior:

1. Clone https://github.com/segevfiner/vscode-jest-extension-debug-crash.
2. npm install in both the repos root directory and jest subdirectory.
3. Open in VS Code.
4. Run the "Run extension" debug configuration
5. Open the jest subdirectory in the extension development host.
6. The extension development host exits/crashes a short time after the jest extension activates.

Log File

vscode-debugadapter-724d8689.json.gz

VS Code Version: 1.67.2

Additional context
See jest-community/vscode-jest#873

[connor4312]

Good find, this is actually reproducable when any debugged child process in the ext host ends, for example adding this to the "hello world" sample will cause a crash too

cp.spawn('node', ['-e', 'setTimeout(() => { console.log(42) }, 1000)']);