Description:
------------
Attached script crashes PHP 4.3.4 (plus security fixes) which is latest versions distributed with Mandrake Linux.

Reproduce code:
---------------
<?php function __errorHandler($errno, $errstr, $errfile, $errline, $errcontext)
{
	error_log("__errorHandler: $errno: $errstr");
	$trace = debug_backtrace();
	foreach ($trace as $data)
	{
		$function = isset($data["function"]) ? $data["function"] : "???";
		if ($function == "__errorhandler")
			continue; # don't print error handler
		$file = isset($data["file"]) ? $data["file"] : "???";
		$line = isset($data["line"]) ? $data["line"] : "??";
		$args = isset($data["args"]) ? serialize($data["args"]) : ""; # XXX
		error_log("$file:$line: $function($args)\n");
	}
}
print("<h1>Check log.</h1>");
set_error_handler("__errorHandler");
$parts = split("/",array()); # generate error here
print("EOF.");
?>


Expected result:
----------------
A warning message have been sent to server log and a full page should have been returned to a client.

Actual result:
--------------
PHP crashes at line marked with "XXX". The problem seems to be related to the fact that the error is generated with incorrect call to split().