Well how do you account for the behaviour that there are no errors when the syntax is correct, but an error when the syntax is wrong ( like a missing colon or scalars define twice with my)? Then if the syntax is ok, it lets it run and evaluation errors appear at runtime?

UPDATE added example

For instance this will stop at compile time: 

#!/usr/bin/perl
use strict;
use warnings;
use lib '.';
use WarnMe;

print "1\n";
print $WarnMe::val,"\n";
print "2\n";

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package WarnMe;
use strict;
use warnings;

# syntax error
my $val = $Some:Nonexistent::Pkg::variable;

1;

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outputs: 
zentara@:zentara$ ./WarnMe
Global symbol "$Some" requires explicit package name at WarnMe.pm line
+ 7.
syntax error at WarnMe.pm line 7, near "$Some:"
Compilation failed in require at ./WarnMe line 5.
BEGIN failed--compilation aborted at ./WarnMe line 5.

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Clearly the Perl compiler is checking syntax first. If you fix that syntax error, the script will compile and run with issuing a non-fatal runtime error: 

Name "WarnMe::val" used only once: possible typo at ./WarnMe line 8.
1
Use of uninitialized value in print at ./WarnMe line 8.
2

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

In reply to Re^3: "possible typo" warnings in modules by zentara
in thread "possible typo" warnings in modules by almut

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