Re: [jazzplusplus-devel] Core dumpage

[Matt K. <ra...@ch...>]

> 
> Hope your fix makes it into the core wxGTK distribution.
> 
> Have you checked if the bug is still in the wxGTK 2.5 beta?

Nope, but I will check.  I checked wxWindows' bug list for wxString
bugs, but did not see this one, so I'm not too hopeful.

Matt

> 
> Cheers,
> /Joakim
> 
> Matt Kelly wrote:
> 
> >OK, I've found the problem.  It's a wxGTK bug, in the wxString
> >class.
> >
> >The default constructor initializes a pointer data member (the member that
> >holds the actual storage) to NULL.  The destructor blindly 
> >dereferences this pointer.  If the string never gets set to anything,
> >it dereferences a NULL pointer minus an index, making for a truly
> >horrible pointer value.
> >
> >Unfortunately, the wxGTK library has a few global wxString variables
> >which normally don't get used.  Thus, they contain these NULL pointers
> >and seg fault on exit when their destructors get called globally.
> >
> >There is a very simple fix, but sadly, the bug is within wxGTK.
> >If anyone is interested, I'll post the fix.  I'll also contact
> >the wxWindows team and notify them.
> >
> >Matt
> >
> >  
> >
> >>As Patrick wrote, It's been there as long as I can remember.
> >>
> >>It has always annoyed me so it would be great if you could eliminate it.
> >>
> >>Cheers,
> >>/Joakim
> >>
> >>Matt Kelly wrote:
> >>
> >>    
> >>
> >>>All,
> >>>
> >>>I've been looking into why JAZZ dumps core when you exit.
> >>>I think I may be onto something.  It appears to be dumping
> >>>core during the destruction of a global wxString located
> >>>within the wxGTK library itself.  Not sure if it's a wxGTK
> >>>bug, a wxWindows bug, or if it's something we're causing,
> >>>but it smells like it might be a wxGTK bug.
> >>>
> >>>My question to the group: how many of you see this behavior?
> >>>I'm asking because I see the same behavior with Audacity.
> >>>My copy of Audacity came bundled with my SuSE installation.
> >>>This seems to reinforce my beliefs.
> >>>
> >>>Also, interestingly, I grabbed the latest wxGTK source, and
> >>>compiled it in debug mode, and installed it.  I made Jazz
> >>>use it for its compiling.  Guess what, same thing on exit!!!
> >>>
> >>>I just want to see if other distros see this same behavior.
> >>>
> >>>Thanks,
> >>>
> >>>Matt
> >>>      
> >>>
> >
> >
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