I'm no expert at this, but it appears to me that at compile time, the Perl interpreter only scans the modules for "syntax errors", it dosn't eval every statement to see if they are good in reality. 
my $val = $Some:Nonexistent::Pkg::variable;  # a missing :

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or 
my $val = $Some::Nonexistent::Pkg::variable; 
my $val;
print $val;

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will yield errors.
I'm not really a human, but I play one on earth. Cogito ergo sum a bum

In reply to Re: "possible typo" warnings in modules by zentara
in thread "possible typo" warnings in modules by almut

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