Hi,

In message "Re: [ruby-core:24697] Re: [Bug #1852] Enumerable's #hash Raises 	ArgumentError When Recursive Values are Present"
    on Mon, 3 Aug 2009 02:07:47 +0900, Tanaka Akira <akr / fsij.org> writes:

|>> * several real applications are found
|>
|> This change broke a lot of specs which was how I noticed it. For
|
|I don't count RubySpec as a real application.

Crashing Array methods (and Set) seems enough important for me.  So,
the point is how to fix it.

							matz.