PHP :: Bug #29098 :: "new" operator crashes script

[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

[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".

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