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

[Jean-Sébastien Guay]

Hello Thibault,

> I am using VS 2008 and Mike's DLL compiled for 7.1. I have had no
> problem so far, so I guess the problem is inside the OSG, and not
> exactly related to FreeType.
>   

First of all, if you're using VS 2008 you really should use the 8.0 
precompiled binaries at a minimum, and I don't think we've done enough 
testing yet to even confirm if that's a good idea or not. Up until now, 
it seems fine, but it could lead to problems in the future. Ideally, we 
should have binaries for 9.0, as historically using libs/dlls compiled 
with a version of VC++ different from the one you're using to compile 
your executable would lead to weird problems/crashes. In this case it's 
too early to tell.

> Adrian, you mentioned something about multi-threading earlier in this
> topic. Do you think such a program is suffer from MT problems ?
> Actually, I don't know osgDB well enough to tell.
>   

The current theory is that it's related to how OSG tries to unload the 
freetype plugin. From such a simple test case, I would say that 
multithreading is unrelated to this particular crash at exit, as no 
viewer is ever instantiated (and thus, no draw/cull/update threads fired).

Thanks for the test case, it's a step in the right direction.

J-S

-- 
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Jean-Sebastien Guay    jean-sebastien.guay at cm-labs.com
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