Not really, and there's a good reason why. Perl allows you to define subroutines on the fly, but doesn't know what those subroutines will be called until it gets there. For example, how would you have Perl behave in the following situation: 
#!perl

use strict;
use warnings;

my $x = shift;

my $sub_name = $x ? 'foo' : 'bar';

eval "*$sub_name = sub { print \"Hello!\n\" };";

foo();

[download]

If the script is passed in a true value, then it will run correctly. If it's passed in a false value, it will not run correctly. But, you want Perl to know what to do before it's been given all the information it might need.

Now, I wouldn't mind seeing an additional optional option added to strict that requires all subroutines, but not methods, to be defined by the time CHECK is complete. But, that's another story.

------
We are the carpenters and bricklayers of the Information Age.

Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

I shouldn't have to say this, but any code, unless otherwise stated, is untested

In reply to Re: Detect undefined subroutines by dragonchild
in thread Detect undefined subroutines by Sprad

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