PowerShell Debug adapter terminates when using attach to host process

[duffney]

When using the PowerShell attach to process option in the debugger the debugger adapter terminates unexpectedly. The integrated powershell terminal also terminates unexpectedly preventing you from using the debugger with other PowerShell process.

[rkeithhill]

I believe the offending exception originates from here. A task result is being set (apparently a second time) and an InvalidOpException happens - the ex message is:

    System.AggregateException: One or more errors occurred. ---> System.InvalidOperationException: An attempt was made to transition a task to a final state when it had already completed.
       at System.Threading.Tasks.TaskCompletionSource`1.SetResult(TResult result)
       at Microsoft.PowerShell.EditorServices.PowerShellContext.<ExecuteCommand>d__48`1.MoveNext()
    ...

[kborowinski]

@rkeithhill @daviwil : Unfortunately it looks like the attach to process is still crashing PowerShellEditorServices. I get ProtocolEndpoint_UnhandledException in EditorServicesHost.cs with PS 1.5.0 either on VSCode 1.17.2 or latest VSCode 1.18.0 insiders version. Logs attached.

vsc_1_17_2_ps_1_5_0_logs.zip
vsc_1_18_0_ps_1_5_0_logs.zip

[rkeithhill]

Yup, that's why this issue hasn't been closed. We know where the bug is but are still looking for a way to fix it without breaking other behaviors.

[realonedet]

I am still experiencing this issue as well, i have tried new versions released through new test builds, still getting the error referenced here, very frustrating, is our only recourse to wait for an updated build of the plugin ?

[SeeminglyScience]

I suspect this will be fixed with all the changes PSReadLine brings. A large amount of logic around how we execute commands had to be refactored to handle nested prompts. No solid eta yet, but I would hold off attempting to fix this. Current progress is in this branch.

[andyleejordan]

This has been long since fixed 😊