perl can't know if the sub won't be defined because you can define subs at runtime. 
use warnings; use strict; use 5.008;
sub monk($) {}
some_code_that_defines_a_sub_mink();
sub go() { mink(123); }

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how should this behave with your suggestion?

In reply to Re: Possible to catch undefined sub at "compile" time? by tinita
in thread Possible to catch undefined sub at "compile" time? by Anonymous Monk

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