My XML parsing exercises have stuck with xml_parse() returning an 'out of memory' error. Here's a text script:

<?php

header('Content-Type: text/html');

function StartTag($parser, $tag, $attrs)
{
	echo "<$tag";
	while (list ($attr, $value) = each($attrs)) {
		echo " $attr";
		if (!empty($value)) {
			echo "=\"$value\"";
		}
	}
	echo ">";
}

$parser = xml_parser_create();
if (!$parser) {
	die('xml_parser_create failed: ' . xml_error_string($parser));
}
if (!xml_set_element_handler($parser, 'StartTag', FALSE)) {
	die('xml_set_element_handler failed: ' . xml_error_string($parser));
}

$data = '<tag attr1 attr2="this is a test &quot;&nbsp;"/>';
// $data = '';

if (!xml_parse($parser, $data, TRUE)) {
	die('xml_parse failed: ' . xml_error_string($parser));
}

?>

I'm using Apache 1.3.12 with the Russian patch.
Both Apache and PHP were compiled with Expat in mind, so that xml_* functions exist. This occurs on two Linux installations, one being Mandrake 7.0, other is the recent Slackware. Peeking at the source, I found that it's rather
Apache/Expat misbehaviour, and PHP source comments say something of that kind.

Any chance that it can be fixed?