You might be right... the phrase
Using a reference as a number produces an integer representing its storage location in memory. The only useful thing to be done with this is to compare two references numerically to see whether they refer to the same location.
has got into perlref between 5.005 and 5.6.0. The feature might have been there from the start though.

In reply to Re^6: A Scalar::Util::refaddr Oddity by ambrus
in thread A Scalar::Util::refaddr Oddity by Zaxo

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