Mono CS1540 test case

CS1540.cs

using System;

static class M {
	static void Main()
	{
		B b = new B();
		// Outside the scope of the B members, the A members are used
		var x = b.Property;
		b.Method();
		b.Field = true;
		
		C c = new C();
		
		c.G(c);
	}
}

public class A {
	public bool Property {
		get {
			Console.WriteLine("Public Property");
			return true;
		}
	}
	
	public bool Method() {
		Console.WriteLine("Public Method");
		return true;
	}
	
	public bool Field;
}

public class B : A {
	protected new bool Property { 
		get {
			Console.WriteLine("Protected Property");
			return true;
		}
	}
	
	protected new bool Method() {
		Console.WriteLine("Protected Method");
		return true;
	}
	
	protected new bool Field;
}

public class C : B {
	public void G(B b) {
		// error CS1540: Cannot access protected member `B.Property' via a qualifier of type `B'. The qualifier must be of type `M.C' or derived from it
		var x = b.Property;
		// error CS1540: Cannot access protected member `B.Field' via a qualifier of type `B'. The qualifier must be of type `M.C' or derived from it
		b.Field = true;
		// Method call compiles without error
		b.Method();
		
		
		
		// Workaround: cast to base class with public accessibility
		var y = ((A)b).Property;
	}
}