rails 2.3.3 and has_many

I found a problem with has_many on rails 2.3.3 (bug not present in 2.3.2).
Given the following models :

  Dentist < ActiveRecord::Base
    has_many :patients
  end

  Patient < ActiveRecord::Base
  end

and then on the console:

Loading development environment (Rails 2.3.3)
>> d = Dentist.new
=> #<Dentist id: nil, name: nil>
>> d.save
=> true
>> d.patients
ArgumentError: wrong number of arguments (2 for 1)
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_proxy.rb:173:in `sanitize_sql'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_proxy.rb:173:in `send'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_proxy.rb:173:in `sanitize_sql'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_collection.rb:41:in `find'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_collection.rb:399:in `find_target'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_collection.rb:353:in `load_target'
    from /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.3/lib/active_record/associations/association_proxy.rb:139:in `inspect'
    from /usr/lib/ruby/1.8/irb.rb:302:in `output_value'
    from /usr/lib/ruby/1.8/irb.rb:151:in `eval_input'
    from /usr/lib/ruby/1.8/irb.rb:263:in `signal_status'
    from /usr/lib/ruby/1.8/irb.rb:147:in `eval_input'
    from /usr/lib/ruby/1.8/irb.rb:146:in `eval_input'
    from /usr/lib/ruby/1.8/irb.rb:70:in `start'
    from /usr/lib/ruby/1.8/irb.rb:69:in `catch'
    from /usr/lib/ruby/1.8/irb.rb:69:in `start'
    from /usr/local/bin/irb:13