Description:
------------
tested on windows 2003, Linux Debian, FreeBSD: a page produces the error: Fatal error: only variables can be passed by reference in /path/to/my/script/file.php line xyz
ONLY on windows.

Reproduce code:
---------------
function foo(&$x){
  return $x;
}
function bar($a, $b){
  return array_merge($arr1+$arr2);
}

$arr = array(1,2,3);

bar($arr, foo(array(4,5,6)));

Expected result:
----------------
Fatal error: only variables can be passed by reference in line x [the one with bar() called]