Another one!

Ruby

class Foo
  def method_missing *args, &block
    foo
  end
end

Foo.new.stack_overflow!
SystemStackError: stack level too deep
        from /home/bbozo/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/irb/workspace.rb:80
Maybe IRB bug!

Another one!

Ruby

class Foo
  def method_missing *args, &block
    foo
  end
end

Foo.new.stack_overflow!
SystemStackError: stack level too deep
        from /home/bbozo/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/irb/workspace.rb:80
Maybe IRB bug!