Comment 5 for bug 1240624

To defeat clisp optimization, I actually had to use
  (funcall 'require "syscalls")
instead of
  (require "syscalls")
that allows me to build CLISP from hg, but somehow running its clisp binary still ends up invoking the system's CLISP.

Annoyingly, the new CLISP has the exact same version string as the previous one with a version date of "2010-07-17", though at least it doesn't segfault with version on the asdf-pathname-test:
   cd ~/cl/asdf
   make t l=clisp t=asdf-pathname-test.script
Now works!

Committed as 3.0.2.27