[Bug 14703] New: Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703

           Summary: Null character comparison problem in vb6 application
           Product: Wine
           Version: 1.1.2
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: oleaut32
        AssignedTo: wine-bugs(a)winehq.org
        ReportedBy: gabmoa(a)yahoo.it


Created an attachment (id=15189)
 --> (http://bugs.winehq.org/attachment.cgi?id=15189)
simple vb6 chr0 comparison project

I've found a BIG problem in VB6 string (BSTR) comparison.

The VB6 program perform this very simple check. In Windows s is different from
chr$(0) (null char) but in wine NOT!

  s = ""
  If s = Chr$(0) Then MsgBox "ERROR, MUST NOT BE EQUAL!!!" Else MsgBox "OK!"

[see attachment]

This is a major bug, since chr$(0) is used in many ways in vb6 (and also in
API)

I've tried this simple program in Wine 0.9.49 and wine 1.1.2 with the same
result.
I think this bug should be fixed for wine 1.2!


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703


Gabriele Moabiti <gabmoa(a)yahoo.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         OS/Version|other                       |Linux
           Platform|Other                       |PC




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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703


Louis Lenders <xerox_xerox2000(a)yahoo.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xerox_xerox2000(a)yahoo.co.uk
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |download, source




--- Comment #1 from Louis Lenders <xerox_xerox2000(a)yahoo.co.uk>  2008-07-31 16:22:58 ---
confirming


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703





--- Comment #2 from Lei Zhang <thestig(a)google.com>  2008-07-31 20:44:37 ---
Created an attachment (id=15201)
 --> (http://bugs.winehq.org/attachment.cgi?id=15201)
patch to fix VarBstrCmp

Does this patch help?


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703





--- Comment #3 from Gabriele Moabiti <gabmoa(a)yahoo.it>  2008-08-01 03:05:41 ---
Fixed!


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703





--- Comment #4 from Gabriele Moabiti <gabmoa(a)yahoo.it>  2008-08-01 08:03:18 ---
... I hope it will be in 1.2 :)
thank you


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703





--- Comment #5 from Lei Zhang <thestig(a)google.com>  2008-08-04 17:41:28 ---
(better) patch sent:

http://www.winehq.org/pipermail/wine-patches/2008-August/059181.html


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703


Lei Zhang <thestig(a)google.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |thestig(a)google.com




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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703





--- Comment #6 from Gabriele Moabiti <gabmoa(a)yahoo.it>  2009-03-16 15:26:20 ---

Excuse me but why the patch isn't already in wine git tree? I think this is a
subtle (so important) bug.


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703





--- Comment #7 from Lei Zhang <thestig(a)google.com>  2009-03-16 17:13:57 ---
Whoops. Apparently I left this one hanging. [1] I'll send a new patch this
week?

[1] http://www.winehq.org/pipermail/wine-devel/2008-August/068044.html


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703


Lei Zhang <thestig(a)google.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #8 from Lei Zhang <thestig(a)google.com>  2009-03-24 13:05:38 ---
Patch committed:

http://www.winehq.org/pipermail/wine-cvs/2009-March/054176.html


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[Bug 14703] Null character comparison problem in vb6 application

http://bugs.winehq.org/show_bug.cgi?id=14703


Alexandre Julliard <julliard(a)winehq.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED




--- Comment #9 from Alexandre Julliard <julliard(a)winehq.org>  2009-03-27 13:53:25 ---
Closing bugs fixed in 1.1.18.


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