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Bug #31721 Wrong memory object management
Submitted: 2005-01-27 13:10 UTC Modified: 2005-02-09 01:00 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: marek dot raida at oskar dot cz Assigned:
Status: No Feedback Package: Class/Object related
PHP Version: 5.0.3 OS: FreeBSD, Solaris, maybe more...
Private report: No CVE-ID: None
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From: marek dot raida at oskar dot cz
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 [2005-01-27 13:10 UTC] marek dot raida at oskar dot cz
Description:
------------
When references between more objects, and on of objects is extended from domDocument, has reference to it caller object and use its property in vsprinf, reference to orignal object is destroyed or wrongly managed by garbageCollector... Really confusing -> could be workarounded by calling method of domDocument extended object from outside of referenced object...


Reproduce code:
---------------
<?php
class a {
  public $a = array(1,2,3);
  function aa($b){ $b->bb(); }
}
class b extends domDocument {
  public $a = NULL;
  function bb(){ $x = vsprintf('www %s www %s www %s www', $this->a->a) ; }
}
class x {
  public $a = null; public $b = null;
  function __construct() {
    $this->a = new a(); $this->b = new b();
    $this->b->a = $this->a;
    var_dump('Object a',$this->a, 'Object b',$this->b);
    $this->a->aa($this->b);
    var_dump('Object a',$this->a, 'Object b',$this->b);
  }
}
$x = new x();
?>

Expected result:
----------------
string(8) "Object a"
object(a)#2 (1) {
  ["a"]=>
  array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
  }
}
string(8) "Object b"
object(b)#3 (1) {
  ["a"]=>
  object(a)#2 (1) {
    ["a"]=>
    array(3) {
      [0]=>
      int(1)
      [1]=>
      int(2)
      [2]=>
      int(3)
    }
  }
}
string(8) "Object a"    <<< RIGHT
object(a)#2 (1) {
  ["a"]=>
  array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
  }
}
string(8) "Object b"
object(b)#3 (1) {
  ["a"]=>
  object(a)#2 (1) {
    ["a"]=>
    array(3) {
      [0]=>
      int(1)
      [1]=>
      int(2)
      [2]=>
      int(3)
    }
  }
}


Actual result:
--------------
string(8) "Object a"
object(a)#2 (1) {
  ["a"]=>
  array(3) {
    [0]=>
    int(1)
    [1]=>
    int(2)
    [2]=>
    int(3)
  }
}
string(8) "Object b"
object(b)#3 (1) {
  ["a"]=>
  object(a)#2 (1) {
    ["a"]=>
    array(3) {
      [0]=>
      int(1)
      [1]=>
      int(2)
      [2]=>
      int(3)
    }
  }
}
string(8) "Object a"
string(8) "Object a"  <<<  WRONG
string(8) "Object b"
object(b)#3 (1) {
  ["a"]=>
  string(8) "Object a"
}

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 [2005-01-27 13:14 UTC] marek dot raida at oskar dot cz
I forgot to mention that in PHP 5.0.2 everything works correctly...
 [2005-02-01 11:21 UTC] rrichards@php.net
Please try using this CVS snapshot:

  http://snaps.php.net/php5-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.0-win32-latest.zip

I believe this was a dom problem whiich was already fixed in CVS
 [2005-02-09 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 
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