http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50871
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-12-03 15:34:53 UTC --- It occurs to me we could use a diagnostic pragma to disable warnings about variadic templates in our headers, instead of marking them as system headers. That wouldn't work currently because the variadic templates warning is [enabled by default] so there's no option to disable it.