Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-581.cs

@@ -0,0 +1,50 @@
+using System;
+
+public class TestParams
+{
+	object this [params string[] idx] {
+		get {
+			return idx[0];
+		}
+		set {
+			Console.WriteLine (value);
+			if ((string)value != "A(B)")
+				throw new ApplicationException (value.ToString ());
+		}
+	}
+	
+	public void TestMethod ()
+	{
+		this ["A"] += "(" + this ["B"] + ")";
+		this [new string[] {"A"}] += "(" + this ["B"] + ")";
+	}
+}
+
+public class TestNonParams
+{
+	object this [string idx] {
+		get {
+			return idx;
+		}
+		set {
+			Console.WriteLine (value);
+			if ((string)value != "A(B)")
+				throw new ApplicationException (value.ToString ());
+		}
+	}
+	
+	public void TestMethod ()
+	{
+		this ["A"] += "(" + this ["B"] + ")";
+	}
+}
+
+public class M
+{
+	public static int Main()
+	{
+		new TestNonParams().TestMethod ();
+		new TestParams().TestMethod ();
+		return 0;
+	}
+}