[xml/sgml-pkgs] Bug#561658: libexpat1 patch breaks xhtml parsing with a local http doctype definition

Fri Dec 18 10:43:12 UTC 2009

Package: libexpat1
Version: 1.95.8-3.4+etch2_i386

After upgrading libexpat1 my perl script which used XPath ceased 
functioning. Downgrading back to 1.95.8-3.4+etch1 fixed the problem, 
meaning the bug was introduced with the patch. I'm using local copy of 
the doctype definition as seen below.

error in processing external entity reference at line 1, column 117, 
byte 117:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.koripallo.com/dtd/xhtml1-transitional.dtd">
======================================================================================
==============================^
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head></head>
  at /usr/lib/perl5/XML/Parser.pm line 187

A small perl script to reproduce the bug (this works in etch1 patch, but 
not in etch2)

#!/usr/bin/perl
use strict;
use DBI;
use DBD::mysql;
use Text::Iconv;
use Getopt::Long;
use Net::HTTP;
use XML::XPath;
use XML::XPath::XMLParser;
my $document = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 
Transitional//EN" "http://www.koripallo.com/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head></head>
<body></body></html>';
my $xp = XML::XPath->new(xml => $document);
my $nodeset = $xp->find('/html/body');
print "Works.\n";