svn path=/trunk/mcs/; revision=83211
--- /dev/null
+using System;
+
+public delegate object TargetAccessDelegate (object user_data);
+
+public class SingleSteppingEngine
+{
+ bool engine_stopped;
+
+ object SendCommand (TargetAccessDelegate target)
+ {
+ return target (null);
+ }
+
+ public void Detach ()
+ {
+ SendCommand (delegate {
+ if (!engine_stopped) {
+ throw new InvalidOperationException ();
+ }
+
+ return null;
+ });
+ }
+}
+
+class X
+{
+ static void Main ()
+ { }
+}
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