It seems like these two lines might be in the wrong order? (and the same thing later in the file too) https://github.com/axboe/fio/blob/afc22c98609ee80a99fbed24231181bdab2bc659/optgroup.h#L65-L66 Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html