[Mono-bugs] [Bug 410994] New: Wrong behavior of setting Target Property of WeakReference

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=410994

User andreas_willich at gmx.at added comment
https://bugzilla.novell.com/show_bug.cgi?id=410994#c1

           Summary: Wrong behavior of setting Target Property of
                    WeakReference
           Product: Mono: Class Libraries
           Version: 1.9
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: Minor
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: andreas_willich at gmx.at
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Description of Problem:
The setter of the property Target of the class System.WeakReference has a
different behavior with Mono than with the .Net Framework.

When you set the property to null in a destructor of a class, a
System.InvalidOperationException is thrown because the internal handle is
already null.

In Mono setting the property does not lead to this exception.

Steps to reproduce the problem:
Compile the attached file and run.


Actual Results:
Net Framework (german version):

Target setting to null
Can not set to null
System.InvalidOperationException: Der Handle wurde nicht initialisiert.
   bei System.WeakReference.set_Target(Object value)
   bei WeakReferenceTest.Program.cls_Test.Finalize()


Mono:
$ mono Program.exe 
Target setting to null
Target is null


Expected Results:
The result of the .Net Framework

How often does this happen? 
Always

Additional Information:
Mono Version:
andreas at quad /home/shared/WeakReferenceTest $ mono --version
Mono JIT compiler version 1.9.1 (tarball)
Copyright (C) 2002-2007 Novell, Inc and Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC)
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none

Linux: 
andreas at quad /home/shared/WeakReferenceTest $ uname -a
Linux quad 2.6.25-gentoo-r5 #1 SMP Mon Jul 7 20:54:15 CEST 2008 x86_64 Intel(R)
Core(TM)2 Quad CPU Q9450 @ 2.66GHz GenuineIntel GNU/Linux


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