Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/errors/cs0535-8.cs

@@ -0,0 +1,40 @@
+// CS0535: `CC' does not implement interface member `IA.this[int].set'
+// Line: 33
+
+using System;
+
+public interface IA
+{
+	object this[int arg] {
+		get;
+		set;
+	}
+}
+
+public abstract class CA : IA
+{
+	public abstract object this[int arg] {
+		get;
+		set;
+	}
+}
+
+public  partial class CB : CA
+{
+	public override object this[int arg] {
+		get {
+			throw new NotImplementedException ();
+		}
+		set {
+		}
+	}
+}
+
+public class CC : CB, IA
+{
+	public new object this[int arg] {
+		get {
+			throw new NotImplementedException ();
+		}
+	}
+}