I patched ruby-pam so that it wouldn't give me warnings about the
allocate function, and back on 1.8.0_pre3, it was running smoothly.
But on 1.8.0_pre4 and beyond, it's giving me this error:

warning: toplevel constant PAMError referenced by PAM::PAMError

I saw a similar issue with YAML back in July on the list:

http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/74315

Does anybody have an idea as to what might be going on here?