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Bug #45849 segmentation fault accessing mssql with pdo/odbc
Submitted: 2008-08-18 10:06 UTC Modified: 2008-10-16 01:00 UTC
Votes:6
Avg. Score:3.5 ± 0.8
Reproduced:4 of 5 (80.0%)
Same Version:1 (25.0%)
Same OS:2 (50.0%)
From: dk at trick dot ca Assigned:
Status: No Feedback Package: PDO related
PHP Version: 5.2.6 OS: Linux
Private report: No CVE-ID: None
View Developer Edit
 [2008-08-18 10:06 UTC] dk at trick dot ca 
Description:
------------
PHP Segfaults when I query MS SQL Server 2005 via an ODBC DSN with PDO.
The query returns fine using tsql, and there is nothing wrong in the freetds log.



Reproduce code:
---------------
(names/credentials changed)

testpdo.php:

<?php
$d = new PDO('odbc:MYDSN','MYDUSERID', 'MYPASSWORD);
foreach ($d->query('SELECT * from MYTABLE') as $row) {
      print_r($row);
}


odbc.ini:

[MYDSN]
Driver = /usr/lib/libtdsodbc.so.0
Description = MYDSN
Trace = Yes
Servername = MYSERVER
Database = MYDATABASE

freetds.conf:

[MYSERVER]
host = MYHOST
port = 1433
tds version = 8.0




Expected result:
----------------
print results or some sort of error.

Actual result:
--------------
# php testpdo.php
Segmentation fault

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 [2008-08-18 10:08 UTC] dk at trick dot ca 
typo, first line of testpdo.pgp does have a missing quote:

$d = new PDO('odbc:MYDSN','MYDUSERID', 'MYPASSWORD');
 [2008-08-18 11:28 UTC] dk at trick dot ca 
further investigation shows this error occurs when a field of type "text" or "varchar(max)" is included in the query.
 [2008-08-18 12:20 UTC] dk at trick dot ca 
Possibly related to 41399?

http://bugs.php.net/bug.php?id=41888
 [2008-10-08 10:45 UTC] felipe@php.net 
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.
 [2008-10-16 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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