Gentoo's Bugzilla –
Attachment 400392 Details for
Bug 545316sys-devel/gcc-4.8.4: /var/tmp/portage/sys-devel/gcc-4.8.4/work/gcc-4.8.4/libcpp/expr.c:629:18: error: format not a string literal and no format arguments [-Werror=format-security] 0, message);