New test.

svn path=/trunk/mcs/; revision=77446

1 files changed, 24 insertions, 0 deletions

diff --git a/mcs/tests/test-570.cs b/mcs/tests/test-570.cs
new file mode 100644
index 00000000000..938abb24a97
--- /dev/null
+++ b/mcs/tests/test-570.cs
@@ -0,0 +1,24 @@
+//Compiler options: -warnaserror -warn:4
+
+using System;
+interface IFoo
+{
+}
+
+class Bar
+{
+}
+
+class Program
+{
+	public static void Main()
+	{
+		IFoo foo = null;
+		if (foo is IFoo)
+			Console.WriteLine("got an IFoo"); // never prints
+			
+		Bar bar = null;
+		if (bar is Bar)
+			Console.WriteLine("got a bar"); // never prints
+	}
+}