Hi,

The bitfield patch was merged in the official CFFI repository eight months ago (http://common-lisp.net/gitweb?p=projects/cffi/cffi.git;a=com...)

I have no idea why quicklisp isn't more up-to-date. If you need recent systems, I recommend managing your own set of libraries. Personally I have a "site-lisp" git repository where I include all the systems I use. This is really useful when I need to try bleeding-edge patches.

Edit: I updated http://codemore.org/cl-zmq.html to document this problem.