Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-822-lib.cs

@@ -0,0 +1,24 @@
+// Compiler options: -t:library
+
+using System;
+
+public class A
+{
+	public virtual int Prop {
+		get {
+			return 1;
+		}
+		
+		set {
+			throw new ApplicationException ();
+		}
+	}
+}
+
+public sealed class B : A
+{
+	public override int Prop {
+		set {
+		}
+	}
+}