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Bug #44141 private parent constructor callable through static function
Submitted: 2008-02-17 06:09 UTC Modified: 2008-02-21 13:57 UTC
From: B dot Steinbrink at gmx dot de Assigned: dmitry
Status: Closed Package: Class/Object related
PHP Version: 5.2.5 OS: Debian Linux
Private report: No CVE-ID:
 [2008-02-17 06:09 UTC] B dot Steinbrink at gmx dot de
Description:
------------
A class that is derived from a class with a private constructor and which does not provide its own constructor, can call the private parent constructor through a static function.

Reproduce code:
---------------
<?php
class X
{
        public $x;
        private function __construct($x)
        {
                $this->x = $x;
        }
}

class Y extends X
{
        static public function cheat($x)
        {
                return new Y($x);
        }
}

$y = Y::cheat(5);
echo $y->x, PHP_EOL;

Expected result:
----------------
Fatal error: Call to private X::__construct() from invalid context ...

Actual result:
--------------
5

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AllCommentsChangesGit/SVN commitsRelated reports
 [2008-02-17 15:12 UTC] felipe@php.net
I think that the parent ctor/dtor private shouldn't be called. Hence, here's a patch (5_3):

http://felipe.ath.cx/diff/bug44141.diff

It doesn't issue error message, only isn't inherited.
 [2008-02-21 13:57 UTC] dmitry@php.net
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
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