[osg-users] Win32 VS8.0 crash on exit in debugger, related to freetype

[Adrian Egli OpenSceneGraph (3D)]

Hi all,

the problem is (i guess) that freetype is not at all thread safe. my you can
try to test in singlethread mode. if there is no crash, than we should have
a look into the osgText freetype access at clean up. i still got many
crashes in reason of that in other application using freetype in multi
threaded env.

/regards

2008/2/2, Antoine Hue <tonio_73 at tiscali.fr>:
>
> 2008/1/24, Jean-Sebastien Guay <jean-sebastien.guay at polymtl.ca
> <mailto:jean-sebastien.guay at polymtl.ca>>:
> >
> >         Hello Robert,
> >
> >         > Its a bit of long shot but I just had a look at the
> >         DeleteHandeler
> >         > code in src/osg/Referenced.cpp and src/osg/DeleteHandler.cpp
> and
> >         > noticed a duplicate definition of the DeleteHandlerPointer
> >         struct, one
> >         > in Referenced.cpp, and one in DeleteHandler.cpp.  I have
> >         removed the
> >         > duplicate in DeleteHandler.cpp and checked this in.
> >         >
> >         > Could you do an svn update and see if this makes any
> difference.
> >
> >         It was a good try, but no cigar... I still get the same
> symptoms.
> >
> >         I have the impression the problem is in freetype itself,
> >         because I get some
> >         freetype functions in the stack trace. Unfortunately I can't
> >         trace into the
> >         freetype source even though I'm linking to the debug lib,
> >         which I don't
> >         understand why.
> >
> >         I think I'll backtrack to an older version of freetype and see
> >         if that helps.
> >         But it'll have to wait till at least next Monday.
> >
> Hello,
>
> It seems this problem is not Windows only.
> I have almost the same symptoms under Linux, Ubuntu Amd64, application
> crashes on exit and Valgrind mem debugger is reporting some double
> delete of DynamicLibrary for Free-type. A friend is also reporting a
> crash under Mac OS X/PPC with Free-type in the stack trace.
>
> I will try to come with a more complete report.
>
> Fact  is I could not reproduce the Linux crash/ Valgrind report with
> osgSimpleViewerQT. Whose content is very similar to our embedded viewer.
> I could not find differences in the use of Freetype in our application !?
>
> Antoine
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>



-- 
********************************************
Adrian Egli
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