Re: p5p summary: Improving threads::shared ?

>  For any existing apps (eg, Data::Dumper) that want to
>  deal with it, they could always fallback to detecting
>  something as shared and saving its id (ie, the shared
>  interpretter version's address) to detect cycles. Not
>  pretty, but effective.

I looked into fixing Data::Dumper for this.  The circular
reference checking is done both in Perl (for the pure-Perl
version) and in XS (the usual version).  It'll take me
awhile to figure out how to do it in XS.