As chipmunk pointed out the structure _is_ self-referencing from the point of view of dumper. Dumper is simply reusing the first 'undef' it encounters. (Very annoying, I know.)

Also, IMO when using Dumper one should _always_ set Purity to be true 

use Data::Dumper;
$Data::Dumper::Purity=1;

[download]
Its suprising the different results that can occur.

Yves / DeMerphq
--
When to use Prototypes?

In reply to Re: A new perl {cough} feature? by demerphq
in thread A new perl {cough} feature? by tachyon

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