C++ program Launch fails second time

Nobody has claimed this yet.

Bug type: Debugger

I run my program, it runs the program, I close the program. All fine.

However next time I try to run it, the launch does nothing, nothing happens. The 'Run and debug' panel shows the loading bar. The small panel showing 'Pause, Step Over, Restart, Stop' has only restart and stop enabled. Clicking these buttons will stop it, but trying to run again will not start it.

I have to completely restart VSCode to get ANY of my launch.jsons to work.

VS Code version: Code 1.58.2 (c3f126316369cd610563c75b1b1725e0679adfb3, 2021-07-14T22:10:15.214Z)
OS version: Windows_NT x64 10.0.19043
Restricted Mode: No

System Info

Item	Value
CPUs	AMD Ryzen 7 3800X 8-Core Processor (16 x 4200)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.92GB (7.08GB free)
Process Argv	--crash-reporter-id 42ffcc9f-d1e9-4d04-96a9-4708692910f8
Screen Reader	no
VM	0%

Extensions (4)

Extension	Author (truncated)	Version
factoriomod-debug	jus	1.1.11
cpptools	ms-	1.5.1
fastbuild	Ros	1.0.0
vscode-autohotkey	sle	0.2.2

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One of the launch.jsons, they are all similar, just calling different fastbuild tasks:

Launch json

    {
      "name": "Factorio Test Debug",
      "type": "cppvsdbg",
      "request": "launch",
      "program": "${workspaceFolder}/bin/Debugx64vs2017/factorio-test.exe",
      "args": [
        //"--test", "TrainGroup"
        //"--suite", "Train"
        //
        //"--suite", "InputAction",
        "--fork",
        "-w"
        //"-i"
      ],
      "stopAtEntry": false,
      "cwd": "${workspaceFolder}",
      "environment": [],
      "console": "newExternalWindow",
      "preLaunchTask": "FastBuildTestsDebug"
    }

https://user-images.githubusercontent.com/11986037/128830777-51698dd2-317f-41a8-aff8-273adef767bc.mp4

Start by reproducing the second-launch failure with the provided launch.json, using the VS Code Run and Debug panel and its FastBuildTestsDebug preLaunchTask. Compare the first and second launches and confirm that consecutive runs work without restarting VS Code; the issue provides no source file or test entry point.

Written by the indexing model from the issue text.

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