Description

Due to the changes made in #57086, initializing a type with variant interfaces can result in a TypeLoadException. The exception only occurs when using the Mono version of the Microsoft.NETCore.App runtime.

Reproduction Steps

public abstract class Foo : IComparable<Foo>, IComparable<Bar>
{
	public abstract int CompareTo(Foo other);
	public abstract int CompareTo(Bar other);
}

public sealed class Bar : Foo
{
	public override int CompareTo(Foo other)
	{
		return 1;
	}

	public override int CompareTo(Bar other)
	{
		return 1;
	}
}

Test method:

new Bar();

Expected behavior

Program runs without exception.

Actual behavior

The program throws an exception:

Unhandled Exception:
System.TypeLoadException: Recursive type definition detected TypeLoadExceptionBug.Bar
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeLoadException: Recursive type definition detected TypeLoadExceptionBug.Bar

Regression?

Yes. This works as expected when using Mono for net5.0 and net472.

Known Workarounds

No response

Configuration

No response

Other information

No response