Hmm... a guess: my code is in a .pm file. Perhaps Perl automatically enters another "use" of import when doing a use of a module. Then the issue isn't -c or not, but main-program or not.

In reply to Re: (bbfu) (warning only during -c) Re3: 'used once' during perl -c by John M. Dlugosz
in thread 'used once' during perl -c by John M. Dlugosz

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