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Bug #24399 PEAR DB isError crash [instanceof_function fault?]
Submitted: 2003-06-30 02:18 UTC Modified: 2004-06-29 23:04 UTC
From: mattmichalowski at hotmail dot com Assigned:
Status: Closed Package: PEAR related
PHP Version: 5.0.0b1 (beta1) OS: Linux (i686 2.2.15)
Private report: No CVE-ID:
 [2003-06-30 02:18 UTC] mattmichalowski at hotmail dot com
A simple PEAR DB test script causes a segfault. 

My configure line:
./configure' '--prefix=/home/mattm/local/php5-apache' '--with-apache=../apache_1.3.27' '--with-pgsql=/usr' '--with-gd=/home/mattm/local/php5-apache' '--with-freetype-dir=/home/mattm/local/php5-apache' '--with-jpeg-dir=/usr' '--enable-calendar' '--with-libxml-dir=/home/mattm/local/php5-apache' '--without-simplexml' '--enable-debug'

Reproduce code:
require_once 'DB.php';

$db = Db::connect('pgsql://postgres:@', false);
if (Db::isError($db))

$res = $db->query("SELECT * FROM employee");
if (Db::isError($res))


Expected result:
no output, but shouldn't segfault

Actual result:
(gdb) bt
#0  0x80b64c8 in instanceof_function ()
#1  0x80c3399 in zend_startup_builtin_functions ()
#2  0x80c3404 in zend_startup_builtin_functions ()
#3  0x80d006f in zend_do_fcall_common_helper ()
#4  0x80d06a6 in zend_do_fcall_handler ()
#5  0x80cbb9b in execute ()
#6  0x80d01dd in zend_do_fcall_common_helper ()
#7  0x80d05aa in zend_do_fcall_by_name_handler ()
#8  0x80cbb9b in execute ()
#9  0x80b9979 in zend_execute_scripts ()
#10 0x8087fd3 in php_execute_script ()
#11 0x80d625a in apache_php_module_main ()
#12 0x807e1d6 in ap_get_server_built ()
#13 0x807e232 in ap_get_server_built ()
#14 0x81efa69 in ap_invoke_handler ()
#15 0x820560f in ap_some_auth_required ()
#16 0x8205676 in ap_process_request ()
#17 0x81fbf16 in ap_child_terminate ()
#18 0x81fc0d1 in ap_child_terminate ()
#19 0x81fc24c in ap_child_terminate ()
#20 0x81fc8dd in ap_child_terminate ()
#21 0x81fd14c in main ()
#22 0x4033165f in __libc_start_main () from /lib/


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 [2003-06-30 14:17 UTC]
This bug has been fixed in CVS.

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every three hours; this change will be in the next snapshot. You can
grab the snapshot at
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Thank you for the report, and for helping us make PHP better.

 [2004-06-29 22:33 UTC] fep at cs dot uiuc dot edu
Having a problem with PHP5 RC3 experiencing a segmentation fault that is very similar to this reported bug fixed last year.  A simple PEAR DB test script causes a segfault.  Our environment is very similar to the one listed below except we are using an Oracle database client against an Oracle 10G database server.
 [2004-06-29 23:04 UTC]
In response to the comment by <fep at cs dot uiuc dot edu> on  2004-06-29:

This isn't really PEAR or PEAR DB related.  The crash is due to a PHP bug.  FYI, I'm not experiencing crashes.  Here's my config:

PHP: 5.0.0-dev (cli) (built: Jun 28 2004 16:29:27)
DB: 1.6.4
PEAR: 1.3.1
OS: Windows 2000
Oracle: 9.2

So, upgrade everything and see what happens.  If you're still crashing, open up a new PHP bug.
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