[Pnet-developers] [bug #4468] PInvoke does not throw System.DllNotFoundException

[nobody]

=================== BUG #4468: LATEST MODIFICATIONS ==================
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=4468&group_id=353

Changes by: Rhys Weatherley <address@hidden>
Date: Mon 07/28/2003 at 08:04 (GMT)

            What     | Removed                   | Added
---------------------------------------------------------------------------
          Resolution | None                      | Fixed
              Status | Open                      | Closed


------------------ Additional Follow-up Comments ----------------------------
Fix committed to CVS - 28 July 2003



=================== BUG #4468: FULL BUG SNAPSHOT ===================


Submitted by: yannis_bres             Project: DotGNU Portable.NET          
Submitted on: Fri 07/25/2003 at 09:11
Category:  None                       Severity:  5 - Major                  
Bug Group:  None                      Resolution:  Fixed                    
Assigned to:  None                    Status:  Closed                       

Summary:  PInvoke does not throw System.DllNotFoundException

Original Submission:  When invoking a function imported from a dynamic library 
that cannot be found, a System.DllNotFoundException should be thrown.  Instead, 
error messages ("could not load dynamic library") are output in the different 
versions of ILDynLibraryOpen in pnet/support/dynlib.c.  These messages should 
be removed and I guess that ILDynLibraryOpen should silently return 0.
I guess that pnet/engine/convert.c should be updated to throw 
System.DllNotFoundException when ILDynLibraryOpen returns 0, but I don't know 
how to do it ;-).
Also, pnet/ilnative/ilcheck.c should be updated as it relies on 
ILDynLibraryOpen to output an error message in case of failure.
Here is a little test program.
ilrun output:
--------------------------------------------------
zobzob.dll: could not load dynamic library
Failed in calling a dummy function from a dummy DLL:
System.MissingMethodException: Attempted to access a non-existing method
        at Test_PInvoke.Main()

DummyFunctionInExistingDLL: could not resolve symbolFailed in calling a dummy 
function from an existing DLL:
System.MissingMethodException: Attempted to access a non-existing method
        at Test_PInvoke.Main()

Succeeded in calling SHGetFolderPath: C:WindowsSystem32
--------------------------------------------------
MS VM output:
--------------------------------------------------
Failed in calling a dummy function from a dummy DLL:
System.DllNotFoundException: Unable to load DLL (zobzob.dll).
   at Test_PInvoke.DummyFunctionInDummyDLL()
   at Test_PInvoke.Main()
Failed in calling a dummy function from an existing DLL:
System.EntryPointNotFoundException: Unable to find an entry point named 
DummyFunctionInExistingDLL in DLL shell32.dll.
   at Test_PInvoke.DummyFunctionInExistingDLL()
   at Test_PInvoke.Main()
Succeeded in calling SHGetFolderPath: C:WindowsSystem32
--------------------------------------------------
Have fun,

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

-------------------------------------------------------
Date: Mon 07/28/2003 at 08:04       By: rweather
Fix committed to CVS - 28 July 2003


CC list is empty


File Attachments
****************

-------------------------------------------------------
Date: Fri 07/25/2003 at 09:11  Name: Test_PInvoke.cs  Size: 2KB   By: 
yannis_bres

http://savannah.gnu.org/bugs/download.php?group_id=353&amp;bug_id=4468&amp;bug_file_id=555


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