wtf.rb

class Foo

  def bar(*args)
    attribute(:bar, *args)
  end

  def attribute(name)
    puts name
  end

end

foo = Foo.new

begin
  foo.bar(100)
rescue => e
  puts e.class.name
end

foo.bar # legit

5.times do
  foo.bar(100)
end

puts 'No errors??? WTF???'

ruby >= 2.0 output:

ArgumentError
bar
bar
bar
bar
bar
bar
No errors??? WTF???

ruby 1.8.7 (anything < 2.0) output:

ArgumentError
bar
(eval):3:in `attribute': wrong number of arguments (2 for 1) (ArgumentError)
    from (eval):3:in `bar'
    from foo.rb:28
    from foo.rb:27:in `times'
    from foo.rb:27