Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-728.cs

@@ -0,0 +1,22 @@
+using System;
+
+public class Tests
+{
+	enum MyEnumUlong : long
+	{
+		Value_1,
+		Value_3 = 2
+	}
+
+	public static int Main ()
+	{
+		var d = MyEnumUlong.Value_1;
+		d = d + (byte) 1;
+		d += (byte) 1;
+
+		if (d != MyEnumUlong.Value_3)
+			return 1;
+
+		return 0;
+	}
+}