http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45983
--- Comment #3 from tbp <tbptbp at gmail dot com> 2010-10-12 13:27:24 UTC --- (In reply to comment #2) > Older GCC for some reason complain about > src/core/sys_log.h:95:40: error: invalid use of ‘__builtin_va_arg_pack ()’ There's code to handle that, but that's not obvious in preprocessed form :) Besides that, that thing compiles with g++ 4.4.4, 4.5 and used to with 4.6 until around, hmm, revision 165246.