[PHP-BUG] Bug #64726 [NEW]: Segfault on fetch_object on used result Closed DB Pointer

[justin at eblah dot com]

From: justin at eblah dot com
Operating system: CentOS 5.9
PHP version:  5.4.14
Package:  MySQLi related
Bug Type: Bug
Bug description:Segfault on fetch_object on used result Closed DB Pointer

Description:

When using MYSQLI_USE_RESULT, then immediately closing the database, and
then attempting to fetch_object() the result will result in a segmentation
fault.

PHP does not segfault if using fetch_array() or fetch_assoc().

Test script:
---
?php

$db = new mysqli(127.0.0.1, root, root, test);
$result = $db-query('SELECT 1', MYSQLI_USE_RESULT);
$db-close();
$result-fetch_object();

Expected result:

An exception or php fatal error that states the database was closed.

Actual result:
--
[root@devz user]# /usr/bin/php segfault.php

Warning: mysqli_result::fetch_object(): Error while reading a row in
segfault.php on line 15
Segmentation fault


-- 
Edit bug report at https://bugs.php.net/bug.php?id=64726edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=64726r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=64726r=trysnapshot53
Try a snapshot (trunk): 
https://bugs.php.net/fix.php?id=64726r=trysnapshottrunk
Fixed in SVN:   https://bugs.php.net/fix.php?id=64726r=fixed
Fixed in release:   https://bugs.php.net/fix.php?id=64726r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64726r=needtrace
Need Reproduce Script:  https://bugs.php.net/fix.php?id=64726r=needscript
Try newer version:  https://bugs.php.net/fix.php?id=64726r=oldversion
Not developer issue:https://bugs.php.net/fix.php?id=64726r=support
Expected behavior:  https://bugs.php.net/fix.php?id=64726r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=64726r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=64726r=submittedtwice
register_globals:   https://bugs.php.net/fix.php?id=64726r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64726r=php4
Daylight Savings:   https://bugs.php.net/fix.php?id=64726r=dst
IIS Stability:  https://bugs.php.net/fix.php?id=64726r=isapi
Install GNU Sed:https://bugs.php.net/fix.php?id=64726r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64726r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=64726r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=64726r=mysqlcfg

Bug #64726 [Opn]: Segfault when calling fetch_object on a use_result and DB pointer has closed

[justin at eblah dot com]

Edit report at https://bugs.php.net/bug.php?id=64726edit=1

 ID: 64726
 User updated by:justin at eblah dot com
 Reported by:justin at eblah dot com
-Summary:Segfault on fetch_object on used result Closed DB
 Pointer
+Summary:Segfault when calling fetch_object on a use_result
 and DB pointer has closed
 Status: Open
 Type:   Bug
 Package:MySQLi related
 Operating System:   CentOS 5.9
 PHP Version:5.4.14
 Block user comment: N
 Private report: N

 New Comment:

Reworded summary.


Previous Comments:

[2013-04-26 17:35:58] justin at eblah dot com

Description:

When using MYSQLI_USE_RESULT, then immediately closing the database, and then 
attempting to fetch_object() the result will result in a segmentation fault.

PHP does not segfault if using fetch_array() or fetch_assoc().

Test script:
---
?php

$db = new mysqli(127.0.0.1, root, root, test);
$result = $db-query('SELECT 1', MYSQLI_USE_RESULT);
$db-close();
$result-fetch_object();

Expected result:

An exception or php fatal error that states the database was closed.

Actual result:
--
[root@devz user]# /usr/bin/php segfault.php

Warning: mysqli_result::fetch_object(): Error while reading a row in 
segfault.php on line 15
Segmentation fault







-- 
Edit this bug report at https://bugs.php.net/bug.php?id=64726edit=1