Dear Monks

I am parsing an XML file using and the following (stripped down) code:

use strict;
use warnings;
use XML::LibXML::Reader;
    
my $XMLfile = 'myfile.xml';

print "Parsing...\n";
    
    my $reader = 'XML::LibXML::Reader'->new(location => $XMLfile) or d
+ie print "Error";
    my $entry_pattern = 'XML::LibXML::Pattern'->new('/martif/text/body
+/termEntry');
    
    my $counter=5000;
    my $signalprint=0;
    while ($reader->nextPatternMatch($entry_pattern)) {
        my $ID;
        my $value="";
        my $info="";
        
        my $termEntry = $reader->copyCurrentNode(1);
        for my $subject ($termEntry->findnodes('descripGrp')) {
            $info = $subject->findvalue('./descrip');
        }
        for my $lang_set ($termEntry->findnodes('langSet')) {
            my $ID = $lang_set->getAttribute('xml:lang');
            for my $term_grp ($lang_set->findnodes('./tig')){
                $value = $term_grp->findvalue('./term');
            }
        }
        
        $counter--;
        
        #committing to database every $counter executions
        if ($counter eq 0){
            $counter=5000;
            $signalprint = $signalprint + $counter;
            print "Done $signalprint\n";
        }
    }

print "Finished!\n";

[download]

When the script reaches the end, perl crashes after printing Finished! I do not get any error message. It seems data were processed correctly. The problem must reside in this line my $termEntry = $reader->copyCurrentNode(1);, as I get the same error further stripping down the code:

use strict;
use warnings;
use XML::LibXML::Reader;
    
my $XMLfile = 'myfile.xml';

print "Parsing...\n";
    
    my $reader = 'XML::LibXML::Reader'->new(location => $XMLfile) or d
+ie print "Error";
    my $entry_pattern = 'XML::LibXML::Pattern'->new('/martif/text/body
+/termEntry');
    
    while ($reader->nextPatternMatch($entry_pattern)) {
        my $termEntry = $reader->copyCurrentNode(1);
    }

print "Finished!\n";

[download]

In this case the script goes through the whole XML till printing "Finished!" and crashes. Note that deleting the line my $termEntry = $reader->copyCurrentNode(1); perl does not crash anymore.

Any idea?

I am on Windows 10 using perl 5.16

=================

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE martif SYSTEM "TBXcoreStructV02.dtd">
<martif type="TBX-Default" xml:lang="en">
  <martifHeader>
    <fileDesc>
      <sourceDesc>
      </sourceDesc>
    </fileDesc>
    <encodingDesc>
      <p type="XCSURI">TBXXCS.xcs</p>
    </encodingDesc>
  </martifHeader>
  <text>
  <body>
      <termEntry id="28836">
        <descripGrp>
          <descrip type="subjectField">04</descrip>
          <note>economics,</note>
        </descripGrp>
        <langSet xml:lang="en">
          <tig>
            <term>employment policy</term>
            <termNote type="termType">fullForm</termNote>
            <descrip type="reliabilityCode">3</descrip>
          </tig>
        </langSet>
        <langSet xml:lang="nl">
          <tig>
            <term>werkgelegenheidsbeleid</term>
            <termNote type="termType">fullForm</termNote>
            <descrip type="reliabilityCode">3</descrip>
          </tig>
        </langSet>
      </termEntry>
    </body>
  </text>
</martif>

[download]

In reply to Perl panicking XML::LibXML::Reader copyCurrentNode by IB2017

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