Description:
------------
This particular condition of error has been introduced in php-5.0.5, and is *not* present in 5.0.4 the following error broke some apps, notably "horde".

Fatal error: Only variables can be passed by reference in pippo.php on line 10

php.ini:allow_call_time_pass_reference = On

See reproduce code, until 5.0.4 it was possible to pass the result of a function.

It's possible to delay this change of behaviour until 5.1 release ?

If not could you point me to a patch that revert this behaviour ?

Many thanks 

Reproduce code:
---------------
<?php
$var="pippo";

function printme(&$var) {
    echo "{$var}\n";
}

printme(serialize($var));
?>


Expected result:
----------------
s:5:"pippo";

Actual result:
--------------
Fatal error: Only variables can be passed by reference in pippo.php on line 10