php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #29098 "new" operator crashes script
Submitted: 2004-07-11 20:35 UTC Modified: 2005-01-22 01:00 UTC
Votes:2
Avg. Score:4.0 ± 1.0
Reproduced:2 of 2 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (50.0%)
From: antonr at game dot permonline dot ru Assigned:
Status: No Feedback Package: Reproducible crash
PHP Version: 5CVS-2004-07-12 (dev) OS: Irrelevant
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: antonr at game dot permonline dot ru
New email:
PHP Version: OS:

 

 [2004-07-11 20:35 UTC] antonr at game dot permonline dot ru 
Description:
------------
When "new" operator appears without "=" operator, it is possibly crashes php

Reproduce code:
---------------
<?php
  class ParentClass
    { private $child;
      public function __construct($child)
        { echo "ParentClass::__construct()<br>\n";
          $this->child = $child;
          $child->setParent($this);
        }
      public function __destruct()
        { echo "ParentClass::__destruct()<br>\n";
          unset($this->child);
        }
    }

  class ChildClass
    { private $parent;
      public function setParent($parent)
        { echo "ChildClass::setParent()<br>\n";
          $this->parent = $parent;
        }
      public function __destruct()
        { echo "ChildClass::__destruct()<br>\n";
          unset($this->parent);
        }
    }

  new ParentClass(new ChildClass());
?>


Expected result:
----------------
    ParentClass::__construct()
    ChildClass::setParent()

and possibly
    ChildClass::__destruct()
    ParentClass::__destruct()


Actual result:
--------------
php crashes

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2004-07-11 23:07 UTC] curt@php.net 
How do you mean possibly? My output with script given:

PHP Fatal error:  Call to a member function setParent() on a non-object in test.php on line 7
ParentClass::__destruct()<br>
 [2004-07-12 06:58 UTC] antonr at game dot permonline dot ru 
On last snap Jul 12, 2004 02:30 GMT

php-cgi.exe outputs nothing to browser and crushes.

php.exe outputs:
ChildClass::__destruct()<br>
ParentClass::__construct()<br>
and then crushes.

One else bug: why ChildClass::__destruct are called before ParentClass::__construct? You see, the reference on ChildClass instance must be passed to ParentClass::__construct.

If I change the line 
new ParentClass(new ChildClass());
to
$a = new ParentClass(new ChildClass());


php-cgi.exe and php.exe output same result:

ParentClass::__construct()<br>
ChildClass::setParent()<br>
ParentClass::__destruct()<br>
ChildClass::__destruct()<br>

and not crash.
 [2004-07-12 19:47 UTC] antonr at game dot permonline dot ru 
Linux Mandrake 10.0: the same behaviour.
 [2004-07-12 19:56 UTC] antonr at game dot permonline dot ru 
Bug is independent of OS
 [2004-07-13 16:11 UTC] fixxxer at php5 dot ru 
Updating to the latest snapshot seems to fix the problem.
 [2004-07-13 16:40 UTC] tony2001@php.net 
Reproducable under Win2k with latest snapshot, but works ok under Linux.
Valgrind doesn't show any errors about it.
 [2005-01-14 23:59 UTC] tony2001@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
 [2005-01-22 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".
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Fri May 09 05:01:27 2025 UTC