Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-270.cs

@@ -0,0 +1,27 @@
+using System;
+
+class X
+{
+	static int Test (int? a)
+	{
+		switch (a) {
+		case 0:
+			return 0;
+		case 1:
+			return 1;
+
+		default:
+			return -1;
+		}
+	}
+
+	public static int Main ()
+	{
+		if (Test (null) != -1)
+			return 1;
+		if (Test (0) != 0)
+			return 2;
+
+		return 0;
+	}
+}