=begin
Marshal.dump results undefined class/module error in case of the non ascii class name
irb(main):001:0> class Résumé
irb(main):002:1> end
=> nil
irb(main):003:0> a = Résumé.new
=> #<Résumé:0x8ba75d8>
irb(main):004:0> Marshal.dump(a)
ArgumentError: undefined class/module Résumé
from (irb):4:in dump' from (irb):4 from /usr/local/bin/irb:12:in
=begin
This issue was solved with changeset r25474.
Heesob, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.