--TEST--
Bug #33282 (Re-assignment by reference does not clear the is_ref flag)
--FILE--
<?php
    $a = array(1, 2, 3);
    $r = &$a[0];
    $r = &$a[1];
    $r = &$a[2];
    var_dump($a);
?>
--EXPECT--
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  &int(3)
}