Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-753.cs

@@ -0,0 +1,26 @@
+interface IA
+{
+	string val { get; set; }
+}
+
+interface IAI : IA
+{
+	new int val { get; set; }
+}
+
+interface IAI2 : IAI { }
+
+class AI2 : IAI2
+{
+	public int val { get { return 42; } set { } }
+	string IA.val { get { return "13"; } set { } }
+
+	public void stuff (IAI2 other)
+	{
+		val = other.val;
+	}
+
+	public static void Main ()
+	{
+	}
+}