Bug #65182 [Fbk->NoF]: Segmentation Fault by acces to class var in persitant mode
| From: | php-bugs at lists dot php dot net | Date: | Sun, 06 Dec 2020 04:22:07 +0000 |
| Subject: | Bug #65182 [Fbk->NoF]: Segmentation Fault by acces to class var in persitant mode | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-230880@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=65182&edit=1
ID: 65182
Updated by: php-bugs@lists.php.net
Reported by: radtke at hd-system dot de
Summary: Segmentation Fault by acces to class var in persitant
mode
-Status: Feedback
+Status: No Feedback
Type: Bug
Package: PDO MySQL
Operating System: Ubuntu 12.04
PHP Version: 5.5.0
Private report: N
New Comment:
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
Previous Comments:
------------------------------------------------------------------------
[2020-11-26 13:57:09] nikic@php.net
I can't reproduce this, at least not on 7.3 upwards. If someone is still seeing this issue,
please tell me.
------------------------------------------------------------------------
[2013-09-20 09:54:35] radtke at hd-system dot de
What's the status of this bug? It's pretty bad to use non persistant mode in multi tier
scenarios on enterprise environments.
------------------------------------------------------------------------
[2013-07-03 03:45:56] laruence@php.net
I can reproduce, will look into it later
------------------------------------------------------------------------
[2013-07-02 10:24:46] radtke at hd-system dot de
Description:
------------
create a class which extends the pdo class f.e. "extPDO"
use the persistant mode
declare a class var f.e. "$sf"
create more then 1 object of the extPDO class and
take access to the class var "$sf"
causes a segmentation fault
no seg fault if:
1. you are NOT in persistant mode
2. you just create 1 instance of the class
2. you don't declare the class var; just set it in the constructor and take access to it
Noticed by accessing two different databases in a loop.
Test script:
---------------
class extPDO extends PDO
{
public $sf;
public function __construct($db_name, $host, $username, $passwd)
{
$dsn = 'mysql:dbname='.$db_name.';host='.$host;
$this->sf = '42';
$options = array(PDO::ATTR_PERSISTENT => true);
parent::__construct($dsn, $username, $passwd, $options);
$this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$this->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
}
}
function testExtPDO()
{
for($i = 1; $i <= 2; $i++){
try{
$pdo_obj = new extPDO('csp2_mycms', 'csp2-db.pille.hds', 'root',
'');
$sql = 'SELECT user_id FROM user';
$pdo_st = $pdo_obj->query($sql);
if($row = $pdo_st->fetch(PDO::FETCH_ASSOC))
echo $i.'.sf:'. $pdo_obj->sf."<br>";
}
catch(Exception $e){
echo 'Exception: '.$e->getMessage().'<br>';
}
}
}
testExtPDO();
Expected result:
----------------
no segmentation fault
Actual result:
--------------
segmentation fault
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=65182&edit=1