Michael Guterl wrote:
>  On Tue, Jul 1, 2008 at 5:04 PM, Charles Oliver Nutter
>  <charles.nutter@[...].com> wrote:
> > ara howard wrote:
> >>
> >> this one's for you charlie ;-)
> > Appears to work just dandy under JRuby:
> >
>  
>  I was doing some comparison between threadify and peach with JRuby,
>  when I noticed some interesting behavior with using
>  Enumerator#to_enum.
>  
>  Sample code and three different results are posted here:
>  http://pastie.org/230287.  Each result randomly occurs and sometimes
>  the code produces no error whatsoever.  MRI does not seem to exhibit
>  the same behavior.
>  
>  I am not sure that what I am doing in the code is even reasonable,
>  however, I thought it might be worth pointing out.

Thanks for filing the bug. I'm looking into it now.

In general we have inserted synchronization code only where it really 
appears to be necessary to maintain the integrity of data structures. 
That means that in some cases, you need to be mindful of code actually 
running in parallel against e.g. arrays, hashes, strings, and so on. But 
we do want to reduce the possibility of a Java exception, so I'll 
investigate a bit.

- Charlie