My script generates this warning: "Use of uninitialized value in numeric le (<=) at script.pl line 416."

The problem is that line 416 is just checking for a matching regular expression. The script is kind of big, but here's lines 406-425: 
    for (my $i = 0; $i <= $#_; $i++) {
        next unless $_[$i] =~ /^(.+?)\.(zip|t?gz|tar|bz2?|tbz)$/i
            or $_[$i] =~ /$config_regexp/i
            or $_[$i] =~ /banner\d?\.(jpe?g|gif|png)$/i
            or $_[$i] =~ /^template\.html?$/i;

        my($volume, $directories, $file) = File::Spec->splitpath($File
+::Find::dir);
        my @dirs = File::Spec->splitdir($directories);

        # unzip any compressed files
        if ($_[$i] =~ /^(.+?)\.(zip|t?gz|tar|bz2?|tbz)$/i) {

            # sometimes File::Temp can't clean up properly
            for (my $x = 0; $x <= $#_; $x++) {
                my $dir = File::Spec->catfile($File::Find::dir, $_[$x]
+);
                if (-d $dir && $_[$x] =~ /^$1\-EXTRACTED.{5}$/) {
                    rmtree($dir);
                    undef $_[$x];
                }
            }

[download]
Does anyone have an idea what the problem might be? I thought it might have something to do with undefining an array element while looping over the array, but I can't reproduce it outside this script.

In reply to Warning gets the line number wrong? by Cap'n Steve

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