[perl #130963] [BUG] Array.perl.EVAL loses Nil

[Zoffix Znet via RT]

On Thu, 09 Mar 2017 04:06:27 -0800, zef...@fysh.org wrote:
> > my @a is default(Nil); @a[0] = Nil
> Nil
> > @a[0]
> Nil
> > @a.perl.EVAL[0]
> (Any)
> 
> .perl.EVAL fails to round-trip the Nil element value in the Array.
> Nil itself round-trips fine, so the failure here is specific to the Array.
> 
> -zefram

Looks to me it's not Nil it's losing, it's the `is default` that it's losing:

    $ perl6 -e 'my @a is default(42); say @a[^3]; @a.perl.EVAL[^3].say'
    (42 42 42)
    ((Any) (Any) (Any))