From: kevin at kevin-online dot com
Operating system: Gentoo Linux (2.4.20-gentoo-r2)
PHP version: 4.3.2
PHP Bug Type: *Programming Data Structures
Bug description: Broken references while using array_pop in a tree / linked list
Description:
------------
While building up a tree structure, i got strange troubles with some
broken references.
I used an array as stack holding references to objects. Some references
within the object were broken after using a reference returned by
array_pop.
PHP 4.3.2-r4
(Apache/1.3.28)
Reproduce code:
---------------
class Gnaa {
var $something;
var $name;
function Gnaa( $name ) { $this->name = $name;}
function setGnaa( &$something ) { $this->something = &$something; }
function &getGnaa() { return $something; }
}
$a =& new Gnaa("a");
$stack[] = &$a;
$b =& new Gnaa("b");
$stack[] = &$b;
$child = &array_pop($stack); // should be &$b
$child->setGnaa( &$a );
print_r($child); // output differs!
print_r( $b ); //
Expected result:
----------------
That $b has the reference to $a, because $child should be a reference to
$b.
--
Edit bug report at http://bugs.php.net/?id=25222&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=25222&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=25222&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=25222&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=25222&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=25222&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=25222&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=25222&r=support
Expected behavior: http://bugs.php.net/fix.php?id=25222&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=25222&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=25222&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=25222&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=25222&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=25222&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=25222&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=25222&r=gnused
