MacOS arm64 debugging in VSCode has a weird behaviour

[centur]

Hi, it feels like either some bug or misconfiguration:
When starting a basic project (created with dotnet script init), with debugger in latest VSCode, breakpoint in csx file is not being hit on start.

script is trivial:

#! net6.0
#r "nuget: StackExchange.Redis, 2.5.61"
using StackExchange.Redis;

Console.WriteLine("Hello world!");

Breakpoint is on Console.WriteLine

Debug console output goes to this point :

-------------------------------------------------------------------
You may only use the Microsoft .NET Core Debugger (vsdbg) with
Visual Studio Code, Visual Studio or Visual Studio for Mac software
to help you develop and test your applications.
-------------------------------------------------------------------
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Private.CoreLib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/dotnet-script.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Microsoft.CodeAnalysis.Scripting.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Collections.Immutable.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Microsoft.CodeAnalysis.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Dotnet.Script.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Console.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.

And then pauses.
To actually hit a breakpoint at Console.WriteLine line - I need to press F5\Continue in debugger, which prints an extra dump in Debugger console, hits breakpoint and completes successfully

Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/McMaster.Extensions.CommandLineUtils.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/netstandard.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.ComponentModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Runtime.InteropServices.RuntimeInformation.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Collections.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.ComponentModel.Annotations.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Threading.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Private.Uri.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Dotnet.Script.DependencyModel.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Runtime.Loader.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Gapotchenko.FX.dll'. Module was built without symbols.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.Runtime.Extensions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/usr/local/share/dotnet/shared/Microsoft.NETCore.App/6.0.5/System.IO.FileSystem.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Microsoft.Extensions.Logging.Abstractions.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Microsoft.Extensions.Logging.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Microsoft.Extensions.Logging.Console.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Loaded '/Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any/Microsoft.Extensions.Options.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.

Not sure if this is directly related, but when I set justMyCode:false in launch.json, I get a separate additional error message right after the first debug output (when execution halts and debugger waits for F5):

Could not load source 'c:\Users\VssAdministrator\AppData\Local\Temp\tmp31E6\Dotnet.Script\Program.cs': Incorrect format of 'source' message..

dotnet script --info output:

dotnet script --info
Version             : 1.3.1
Install location    : /Users/centur/.dotnet/tools/.store/dotnet-script/1.3.1/dotnet-script/1.3.1/tools/net6.0/any
Target framework    : net6.0
.NET Core version   : 6.0.5
Platform identifier : osx
Runtime identifier  : osx-arm64

This issue happens only when debugging .csx files, regular .NET projects work fine in the same environment\vscode.
Hope this is enough info to triage the issue.

[dafergu2]

This is likely due to stopAtEntry being set in your launch.json

Here's the launch.json that got created with an init command I ran this morning.

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": ".NET Script Debug",
      "type": "coreclr",
      "request": "launch",
      "program": "${env:HOME}/.dotnet/tools/dotnet-script",
      "args": ["${file}"],
      "windows": {
        "program": "${env:USERPROFILE}/.dotnet/tools/dotnet-script.exe",
      },
      "cwd": "${workspaceFolder}",
      "stopAtEntry": true,
    }
  ]
}

If you comment out the stopAtEntry, then it will behave as you desire I believe.

[centur]

@dafergu2 Thanks, this is indeed the cause. Haven't paid attention to this prop before, looking into this param - it all started to makes sense now. Not a bug, an unexpected feature of VSCode debugger...