AnomalousMonk, excepting line numbers, the OP code does produce those messages for me. As LanX said, it's a conflict on importing the same subroutines from POSIX and Date::Format. This can be seen with perl -MPOSIX -MDate::Format -e 1, which also produces those messages

(edit: add links)

(edit 2: sorry, you updated after I started this reply...)

In reply to Re^2: Prototype Mismatch Errors by pryrt
in thread Prototype Mismatch Errors by mavericknik

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