New test.

svn path=/trunk/mcs/; revision=69351

mcs/tests/test-542.cs

@@ -0,0 +1,18 @@
+class C
+{
+	static void Test (C arg)
+	{
+	}
+	
+	public static void Main ()
+	{
+		object value = null;
+		C.Test(
+#if true
+		(C)
+#else
+		no error here
+#endif
+		value);
+	}
+}