"Stop"-ing the dubugger before it finishes starting doesn't happen gracefully - Exceptions thrown in the console

[Aster89]

I suspect there might be some other DAP non-compliance related to shutting down the debugger while it is starting.

I'm just reproducing @fendor 's usecase from #320, and I'm doing it too in VSCode, hoping to make any investigation easier.

Here's a couple of scenarii where I launch the debugger and then click "Stop" (Shift+F5) at various moments/in various ways:

• soon after having started it (say after a second)

  in the terminal window I see this:

  hdb: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.IOException:
  
  Network.Socket.connect: <socket: 13>: does not exist (Connection refused)
  
  HasCallStack backtrace:
    ioError, called at ./Network/Socket/Internal.hs:224:5 in network-3.2.8.0-b69fc14ab47eb0f284d8e20e170e9ec0944dab54cb9a1b6cf51ab712a07bab38:Network.Socket.Internal
  

  in the output window, I see this (sorry, I used to upload to https://0x0.st/, but they've disabled it; what are you using nowadays? For now, I'm relying on my Dropbox)

• after a few more seconds, but clicking "Stop" twice

  in the terminal window I see this:

  hdb: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.IOException:
  
  GHCi.Message.readPipe: end of file
  
  HasCallStack backtrace:
    collectExceptionAnnotation, called at libraries/ghc-internal/src/GHC/Internal/Exception.hs:170:37 in ghc-internal:GHC.Internal.Exception
    toExceptionWithBacktrace, called at libraries/ghc-internal/src/GHC/Internal/Exception.hs:90:42 in ghc-internal:GHC.Internal.Exception
    throw, called at libraries/ghci/GHCi/Message.hs:721:16 in ghci-9.14.1-953d:GHCi.Message
  

  in the output window, I see this

• waiting a bit more, and clicking "Stop" twice, I got this

  hdb: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.IOException:
  
  <socket: 13>: hClose: resource vanished (Broken pipe)
  
  HasCallStack backtrace:
    ioError, called at libraries/ghc-internal/src/GHC/Internal/IO/Handle/Internals.hs:887:17 in ghc-internal:GHC.Internal.IO.Handle.Internals
  

  (tell me if you need the output).

[fendor]

@Aster89 You can upload images and videos to GitHub directly. For code or logs, I use https://paste.tomsmeding.com/

[Aster89]

@Aster89 You can upload images and videos to GitHub directly. For code or logs, I use https://paste.tomsmeding.com/

Paste too large.