You will have to read all of the perldelta files in https://metacpan.org/dist/perl.

Most likely you can speed up the process by telling us exactly what fails and how that manifests itself.

In reply to Re: Overcoming 5.10.0 vs 5.38.2 incompatibilities by Corion
in thread Overcoming 5.10.0 vs 5.38.2 incompatibilities by zatlas1

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