fellow monks,

I've noticed an issue running a script on different platforms. The following script, with perl 5.8.8 built for i386-freebsd-64int, runs without issue.

use strict;

use XML::Simple qw(:strict);
use LWP::UserAgent;
use Data::Dumper;
use POSIX qw(strftime);

getNVD();

sub getNVD {

    my $ua = LWP::UserAgent->new;
    $ua->agent(
"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/200
+70309 Firefox/2.0.0.3"
    );

    my $req =
      HTTP::Request->new(
        GET => 'http://nvd.nist.gov/download/nvdcve-recent.xml' );
    $req->content_type('application/x-www-form-urlencoded');
    my $res = $ua->request($req);

    my $fetch;

    if ( $res->is_success ) {
        $fetch = $res->content;
    }
    else {
        print $res->status_line;
    }

    my $today     = strftime( "%Y-%m-%d", localtime );
    my $yesterday = strftime( "%Y-%m-%d", localtime( time - 86400 ) );

    my $xml = new XML::Simple;

    my $data = $xml->XMLin(
        "$fetch",
        KeyAttr    => { cve    => 'entry' },
        ForceArray => [ 'cve', 'ref' ]
    );

    my $e;

    foreach $e ( @{ $data->{entry} } ) {
        if (   $e->{severity} =~ /High/
            && $e->{modified} =~ /($today|$yesterday)/ )
        {
            print $e->{name};
        }
    }

    #print Data::Dumper->Dump([\$data]);

}
[download]

However the same code, when run on perl 5.8.8 built for MSWin32-x86-multi-thread, produces the following error:

Use of uninitialized value in pattern match (m//) at test.pl line 45.
[download]

There appears to be an issue with the following section:

if (   $e->{severity} =~ /High/
            && $e->{modified} =~ /($today|$yesterday)/ )
        {
[download]

Removing the references to $e->{severity} and $e->{modified} produce the same result. I should also note that the data across each platform when using Data::Dumper appears to be identical. Any thoughts on what may be causing this error?

cheers.