Description:
------------
I tried the following with the lastest snapshot 
php4-STABLE-200403031030/sapi/cli/php
just did a ./configure without an options 

when using double references (accidently or not) the variables in PHP get corrupted.
$acl contains the content of $y

If you change the line
$y = 'TestString';
to
#$y = 'TestString';
or add an var_dump($acl) before that line
everything works as expected (including the call to the undefined function of that object). It looks like an internal pointer is not reseted correctly

previous version sometimes crashed wich seems no longer to be the case.



Reproduce code:
---------------
class TestObj {
    var $x;
    function &save() {
        return $this;
    }
}
$acl = new TestObj();
$acl = &$acl->save();
$y = 'TestString';
var_dump($acl);
if (is_object($acl)) {
    $acl->dump();
}


Expected result:
----------------
object(testobj)(0) {
}


Actual result:
--------------
string(10) "TestString"