For logging, use something like Log::Any. In the line just before where the error is occuring, I would $log->debugf("DIcas_text='%s', HR=%s", \@HR); -- but that will add to your log whether or not there was an error.

As for debugging the problem: see perldiag#Use of uninitialized value: something in your @HR is coming up as an undef.

Armed with that knowledge, I might change the logging to something like what's used in the following SSCCE:

use warnings;
use strict;
use Log::Any qw($log);
use Log::Any::Adapter ('File', './debug.log');

sub errcheck_array {
    my $logger = shift;
    my $prefix = shift;
    my $count = grep {!defined} @_; # count the number of undefined el
+ements in input array
    return unless $count;           # this line will prevent a log mes
+sage unless there's an undef; comment it out to log _all_ calls, whet
+her or not there's an undefined value
    $logger->debugf("%s: %d undefined values found in %s", $prefix, $c
+ount, \@_);
    1;
}

foreach my $hr ( [qw(a b c)], [a => undef, b => undef, 'c'], [qw(x y z
+)] ) {
    my @HR = @$hr;
    my $DIcas_text = '%s' . ',%s'x$#HR;
    errcheck_array($log, "sprintf('$DIcas_text', \@HR)", @HR);
    my $EVmsg = sprintf($DIcas_text, @HR);  print "STD OUTPUT> $EVmsg\
+n";
}

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In reply to Re: Troubleshooting perl runtime errors by pryrt
in thread Troubleshooting perl runtime errors by lvirden

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