Description:
------------
When supplying an object/method callback for set_exception_handler it does not work if no exception message is passed. If you use a function of a static method it works fine.

If you pass a message, it also works as expected

- Davey

Reproduce code:
---------------
<?php
class exception_handler {
    function handle_exception($exception) {
        var_dump($exception);
    }
}

$exception_handler = new exception_handler;

set_exception_handler(array($exception_handler, 'handle_exception'));

throw new Exception;

?>

Expected result:
----------------
object(Exception)#1 (6) {
  ["message:protected"]=>
  string(0) ""
  ["string:private"]=>
  string(0) ""
  ["code:protected"]=>
  int(0)
  ["file:protected"]=>
  string(53) "D:\web\php-mag\shafikdavey_errorhandling\listing2.txt"
  ["line:protected"]=>
  int(12)
  ["trace:private"]=>
  array(0) {
  }
}

Actual result:
--------------
<br />
<b>Fatal error</b>:  Uncaught exception 'Exception' in D:\web\php-mag\shafikdavey_errorhandling\listing2.txt:12
Stack trace:
#0 {main}
  thrown in <b>D:\web\php-mag\shafikdavey_errorhandling\listing2.txt</b> on line <b>12</b><br />