Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0205-5.cs

@@ -0,0 +1,16 @@
+// CS0205: Cannot call an abstract base member `A.this[int].set'
+// Line: 13
+
+public abstract class A
+{
+        public abstract int this[int i] { set; }
+}
+
+public class B: A
+{
+		public override int this[int i]  {
+			set {
+				base[i] = value;
+			}
+		}
+}