[Mono-bugs] [Bug 73973][Wis] New - different results for reflection of overriden properties
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bugzilla-daemon@bugzilla.ximian.com
Tue, 22 Mar 2005 11:23:04 -0500 (EST)
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Changed by sebastien@ximian.com.
http://bugzilla.ximian.com/show_bug.cgi?id=73973
--- shadow/73973 2005-03-22 11:23:04.000000000 -0500
+++ shadow/73973.tmp.8865 2005-03-22 11:23:04.000000000 -0500
@@ -0,0 +1,93 @@
+Bug#: 73973
+Product: Mono: Runtime
+Version: 1.1
+OS: All
+OS Details:
+Status: NEW
+Resolution:
+Severity:
+Priority: Wishlist
+Component: misc
+AssignedTo: mono-bugs@ximian.com
+ReportedBy: sebastien@ximian.com
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL:
+Cc:
+Summary: different results for reflection of overriden properties
+
+Description of Problem:
+
+Mono and MS runtime don't reflect properties (and maybe other stuff too)
+the same way when memebers are overridden.
+
+This means that the most simple calls, e.g. Type.GetProperty (string),
+which are the ones most likely to be used, can fail on MS runtime (while
+running ok on Mono).
+
+
+Steps to reproduce the problem:
+1. Compile this sample code
+
+using System;
+using System.Reflection;
+using System.Threading;
+
+public class TestWaitHandle : WaitHandle {
+ public override IntPtr Handle {
+ get { return base.Handle; }
+ set { base.Handle = value; }
+ }
+}
+
+class Program {
+
+ static void Main ()
+ {
+ BindingFlags bf = BindingFlags.Instance | BindingFlags.Public |
+BindingFlags.DeclaredOnly;
+ Type t = typeof (TestWaitHandle);
+ PropertyInfo pi = t.GetProperty ("Handle", bf);
+
+ if (pi == null)
+ Console.WriteLine ("NOT FOUND with {0}", bf);
+ else
+ Console.WriteLine ("found with {0}", bf);
+
+ try {
+ pi = t.GetProperty ("Handle");
+
+ if (pi == null)
+ Console.WriteLine ("NOT FOUND with no BindingFlags");
+ else
+ Console.WriteLine ("found with no BindingFlags");
+ }
+ catch (AmbiguousMatchException) {
+ Console.WriteLine ("AmbiguousMatchException with no BindingFlags");
+ }
+ }
+}
+
+2. Execute on Mono runtime (I used HEAD)
+3. Execute on MS runtime
+
+Actual Results (mono runtime):
+
+% mono reflprop.exe
+found with DeclaredOnly, Instance, Public
+found with no BindingFlags
+
+
+Expected Results (MS runtime):
+
+> reflprop
+found with DeclaredOnly, Instance, Public
+AmbiguousMatchException with no BindingFlags
+
+
+How often does this happen?
+Always
+
+
+Additional Information:
+It seems Mono's reflection doesn't track overrides like the MS runtime.