We cater to MSVC, so sections of code not protected by PIPE_ARCH need to be C89. Additionally, clarity is valued over tenseness. Elegance is even better, but there aren't many opportunities for that in this sort of code. :3 Posting from a mobile, pardon my terseness. ~ C. <blockquote type="cite">On Jul 16, 2010 3:52 PM, "Segovia, Benjamin" <<a href="mailto:benjamin.segovia@intel.com" target="_blank">benjamin.segovia@intel.com</a>> wrote: Hello all, I did not find specific information about that. What is allowed in Mesa code base regarding C? Can I use C99 extensions (like variable not in the top of the scope, c++ comments) or gcc specific extensions (__vectors, labels as values...)? Cheers, Ben _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </blockquote>