Ah, so the question becomes what does this do that B::Lint doesn't do (other than being fatal rather than printing a warning, that is)? 

$ perl -MO=Lint -wce 'foo( );'
Nonexistant subroutine 'foo' called at -e line 1
-e syntax OK

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The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re^3: use Ensure -- module to spot undefined stuff by Fletch
in thread use Ensure -- module to spot undefined stuff by gone2015

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