Location missing if unhandled Exception occurred in async Main

[itn3000]

Overview

Cannot get location of unhandled exception occurred in async Main program.

Environment

• netcoredbg version: 3.0.0-13 (27606c3, Release)
• os: win10 x64
• dotnet-sdk: 8.0.200
• vscode: 1.86.2
• C# extension: 2.18.16

Steps to reproduce

1. create new console project
2. open project with vscode
3. write following code
4. start vscode debugging session with following pipeTransport setting

code example

using System;
using System.Threading.Tasks;

class Program
{
    static void Abc()
    {
        throw new Exception();
    }
    static async Task Main()
    {
        await Task.Yield();
        Abc();
    }
}

pipeTransport setting

            "pipeTransport": {
                "pipeCwd": "${workspaceFolder}",
                "pipeProgram": "c:/Windows/System32/cmd.exe",
                "pipeArgs": ["/c"],
                "debuggerPath": "d:/bin/netcoredbg/netcoredbg.exe"
            }

Expected

program stops and display exception message.

Actual

program stopped but no message. callstack information is "Unknown Source"

Additional Information

edit Main function to sync, it works as expected.

[gbalykov]

Thanks for reporting, we'll take a look

[viewizard]

Looks like async methods should care about exceptions in another way:

<- (E) {"body":{"allThreadsStopped":true,"reason":"exception","text":"An unhandled exception of type 'System.Exception' occurred in System.Private.CoreLib.dll","threadId":93289},"event":"stopped","seq":"14","type":"event"}

plus, in this case we have some "exception handler" (not user code) in the same time, if I click on top frame, I see proper exception data:

For example, MS C# debugger:

<- (E) {"seq":28,"type":"event","event":"stopped","body":{"reason":"exception","threadId":93792,"text":"An exception of type 'System.Exception' occurred in vscode_test.dll but was not handled in user code","allThreadsStopped":true,"source":{"name":"Program.cs","path":"/home/viewizard/Desktop/projects_test/vscode_test/Program.cs"},"line":8,"column":9}}