From: Ryan Davis <ryand-ruby@...>
Date: 2009-01-19T19:21:59+09:00
Subject: [ruby-core:21433] Re: Proposal: Module#copy_method


On Jan 19, 2009, at 00:10 , Yukihiro Matsumoto wrote:

> This implementation can easily cause segmentation fault, since many C
> implemented method does not check type of their receivers.  Try
>
>  class Foo
>    copy_method Bignum, :odd?
>  end
>  Foo.new.odd?
>
> for example.  The issue is more difficult than it seems.  I've had
> similar issue when we implemented Method#bind, this one is even
> tougher.

Isn't it sufficient to not let cfunc nodes be copied? Or don't worry  
about it and trust the developers. To quote you on the :!= issue:

> It's intentional.  Ruby's flexibility sometimes allows you to do some
> nasty things.  Ruby consider you smart enough to avoid such
> contradiction.

couldn't that work here?