[Pnet-developers] [bugs #7265] compiler does not find error, runtime prints strange message

[Rhys Weatherley]

This mail is an automated notification from the bugs tracker
 of the project: DotGNU Portable.NET.

/**************************************************************************/
[bugs #7265] Latest Modifications:

Changes by: 
                Rhys Weatherley <address@hidden>
'Date: 
                Thu 01/22/04 at 05:21 (GMT)

            What     | Removed                   | Added
---------------------------------------------------------------------------
          Resolution | None                      | Works for me
              Status | Open                      | Closed


------------------ Additional Follow-up Comments ----------------------------
When I use the simple test case in your description,
I get the following error from cscc, which is what
I would expect:

click.cs:9: delegate expression is not compatible with `System.EventHandler'

I cannot build your EditWindow.cs example because it relies
upon classes that you did not supply (e.g. MForm).  Please
create a better test case and open a new bug if you are
still having problems.  But I am unable to replicate the
problem that was reported with the CVS version of pnet.






/**************************************************************************/
[bugs #7265] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=7265>
Project: DotGNU Portable.NET
Submitted by: 0
On: Thu 01/15/04 at 05:54

Category:  None
Severity:  5 - Average
Item Group:  None
Resolution:  Works for me
Assigned to:  None
Status:  Closed


Summary:  compiler does not find error, runtime prints strange message

Original Submission:  If you add a handler for an event to a widget, and that 
handler has the wrong signature, the compiler blithely continues.

The eroneous code assigned to Click using += new EventHandler(handler),  but 
the signature of the handler is (object, PaintEventArgs)

When the program is run by ilrun, this message appears:  EditWindow::.ctor 
[2129] - call at verify_call.c:1089
Uncaught exception: System.Security.VerificationException: Could not verify the 
code
        at CqlJournal.EditWindow.Main(String[])

Code to produce this error:
TextBox tb = new TextBox();
tb.Click += new EventHandler(myHandler);
.
.
.
But, myHandler is not of type EventHandler.  The method that produced the error 
pasted above is:

private void myHandler(object obj, PaintEventArgs args)
{
...
}


Follow-up Comments
------------------


-------------------------------------------------------
Date: Thu 01/22/04 at 05:21         By: rweather
When I use the simple test case in your description,
I get the following error from cscc, which is what
I would expect:

click.cs:9: delegate expression is not compatible with `System.EventHandler'

I cannot build your EditWindow.cs example because it relies
upon classes that you did not supply (e.g. MForm).  Please
create a better test case and open a new bug if you are
still having problems.  But I am unable to replicate the
problem that was reported with the CVS version of pnet.

-------------------------------------------------------
Date: Thu 01/15/04 at 05:57         By: None
Sorry, the file I attached got fat fingered when I copied it over.  The line 
with an error should be...

tbox.Click += new EventHandler(testHandler);







File Attachments
-------------------

-------------------------------------------------------
Date: Thu 01/15/04 at 05:54  Name: EditWindow.cs  Size: 2KB   By: None
file that demonstrates the problem.  It isn't the simplest possible case, but I 
included it because (1) it produces the error I pasted and (2) I was feeling to 
lazy to make a separate test case file.
http://savannah.gnu.org/bugs/download.php?item_id=7265&amp;item_file_id=958






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<http://savannah.gnu.org/bugs/?func=detailitem&item_id=7265>

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