Static virtual interface methods not called on the base interface

[vyacheslav-volkov]

Android application type

.NET Android (net7.0-android, etc.)

Affected platform version

Version: 13.2.0.0

Description

Static virtual interface methods not called on the base interface, it works for net7.0.

Steps to Reproduce

1. Create an android app.
2. Run this code and it will fail with the NotSupportedException:

public interface ITestVirtualStaticBase
{
    static virtual string Test() => throw new NotSupportedException();
}

public interface ITestVirtualStatic : ITestVirtualStaticBase
{
    static string ITestVirtualStaticBase.Test() => "Test";
}

[Activity(Label = "@string/app_name", MainLauncher = true)]
public class MainActivity : Activity
{
    public static string Test<T>() where T : ITestVirtualStaticBase => T.Test();

    protected override void OnCreate(Bundle? savedInstanceState)
    {
        base.OnCreate(savedInstanceState);

        var test = Test<ITestVirtualStatic>(); //throws NotSupportedException instead of "Test" value
    }
}

Did you find any workaround?

No response

Relevant log output

No response

[jpobst]

I think this is an issue in the Mono runtime and will need to be filed in dotnet/runtime. If I understand correctly, they may already be tracking it for .NET 8:

• [Mono] implement static virtual methods in interfaces support runtime#49904
• [mono] Default Interface Implementation of Static Virtual Methods runtime#67540