From: Wilson Bilkovich <wilsonb@...>
Date: 2006-12-02T01:06:18+09:00
Subject: Re: Segmentation fault, proc, eval, long string [Reproduced]

On 12/1/06, Pit Capitain <pit@capitain.de> wrote:
> Wilson Bilkovich schrieb:
> > On 12/1/06, Pit Capitain <pit@capitain.de> wrote:
> >> Bob, you can use parsetree to dump the AST of the generated proc. I'm
> >> sure you'll see the deep nesting of the nodes.
> >
> > I just tried this, and here's what it gave me (for a smaller N, so the
> > whole process doesn't crash. Should show the same structure no matter
> > what N is, though)
> >
> > (...)
>
> Wilson, this is not the dump of the generated proc. You have to pass the
> contents of @@proc to ParseTree.
>

Haha. Oops. You're right:

wilson@metaclass:~$ ruby boom.rb
the_string length: 186747
[[:module,
  :SomeModule,
  [:scope,
   [:cvdecl,
    :@@pr,
    [:iter,
     [:call, [:const, :Proc], :new],
     nil,
     [:block,
      [:dasgn_curr,
       :thing,
       [:dasgn_curr,
        :v0,
        [:dasgn_curr,
         :v1,
         [:dasgn_curr,
          :v2,
          [:dasgn_curr,
           :v3,
           [:dasgn_curr,
            :v4,
            [:dasgn_curr,
             :v5,
/usr/lib/ruby/1.8/prettyprint.rb:344:in `deq': stack level too deep
(SystemStackError)
        from /usr/lib/ruby/1.8/prettyprint.rb:343:in `deq'
        from /usr/lib/ruby/1.8/prettyprint.rb:171:in `break_outmost_groups'
        from /usr/lib/ruby/1.8/prettyprint.rb:197:in `text'
        from /usr/lib/ruby/1.8/pp.rb:245:in `pretty_print'
        from /usr/lib/ruby/1.8/pp.rb:126:in `pp'
        from /usr/lib/ruby/1.8/prettyprint.rb:224:in `group'
        from /usr/lib/ruby/1.8/prettyprint.rb:247:in `nest'
        from /usr/lib/ruby/1.8/prettyprint.rb:223:in `group'
         ... 294 levels...
        from /usr/lib/ruby/1.8/pp.rb:69:in `pp'
        from /usr/lib/ruby/1.8/pp.rb:52:in `pp'
        from /usr/lib/ruby/1.8/pp.rb:51:in `pp'
        from boom.rb:45