Hello everyone, I'm trying to teach cl-ppcre (taken from github, updated) to use (unsigned-byte 8) data as well, to see how much faster it gets for ASCII and binary files. Attached is a diff that's my current state. It's not nice, but - it's not cleaned up yet. The problem is that with sbcl 1.0.55.0-debian (amd64) I get Unhandled memory fault at #x0. and that's not good. I'm doing this: (asdf:clear-system :cl-ppcre) (asdf:oos 'asdf:compile-op :cl-ppcre :force T) (asdf:oos 'asdf:load-source-op :cl-ppcre) then, optionally, (trace "CL-PPCRE") and then crash SBCL with (scan-to-strings "B(A+)(.)" "AAAAAABAAAAAAAAAA") Any ideas? Thanks a lot. Regards, Phil