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From: "Oliver Lehmann" <oliver@FreeBSD.org>
To: Tom Evans <tevans.uk@googlemail.com>
Date: Thu, 30 Apr 2009 14:24:00 +0200
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Cc: x11@freebsd.org
Subject: Re: Problem with OpenGL and ATI HD3850
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Tom Evans writes: 

> ... isn't this string object (unless they have typedef'ed std::string
> String). Is it possible there is a String constructor elsewhere doing
> something different with pcVer, which then leads to trying to construct
> a std::string with a NULL?

Here is the full source:
http://motorola.usc.edu/trac/gge/browser/Engine/Core/Dependencies/OgreSource
/RenderSystems/GL/src/OgreGLSupport.cpp