dev-perl/
Safe-Isa

Call isa, can, does and DOES safely on things that may not be objects

https://metacpan.org/release/Safe-Isa

There are no open security bugs.

You think something is missing here?
Start with filling a new security bug.

Please file new vulnerability reports on Gentoo Bugzilla and assign them to the Gentoo Security product and Vulnerabilities component.