Hi, keepers of Perl knowledge!

I have code where I am constructing the name of a .conf file based on the location of the module:

package Module;
use warnings;
BEGIN {
    my $pathname = $INC{$\(__PACKAGE__)}.pm"};
    $pathname =~ s/\.pm$/.conf/;
}
1;

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When I check the syntax via the interpreter, I get a warning:

$ perl -c Module.pm
Use of uninitialized value in substitution (s///) at Module.pm line 8.
Module.pm syntax OK
$

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If I comment out the use warnings; pragma, the warning goes away.

I'm assuming that __PACKAGE__ is not defined until a script loads the module, so this might be an explanation. perlmod states that using __PACKAGE__ can be thorny when creating variable names, so I thought I would pose the question to you. Should I be looking at another method to construct a variable name?

Thanks!

In reply to a few questions about __PACKAGE__ by Anonymous Monk

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