libruby1.8-dbg 1.8.1+1.8.2pre4-1ubuntu0.2 (ia64 binary) in ubuntu hoary

Debugging libraries for Ruby 1.8
 Contains unstripped shared libraries.
 .
 This package is provided primarily to provide a backtrace with names
 in a debugger, this makes it somewhat easier to interpret core
 dumps. The libraries are installed in /usr/lib/debug and can be used
 by placing that directory in LD_LIBRARY_PATH. Most people will not
 need this package.