http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50143
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-08-21 20:07:27 UTC --- Bah, in my opinion, if Doxygen otherwise suits our needs we should just keep using it and ask users interested in HTML Validator results to file PR with Doxygen. But certainly I don't feel strongly about these issues.