Description:
------------
I believe we have a same/similar situation as PHP bug # 46473 (updated that bug report but got no response, so figuring I need to open a new report) running PHP 5.2.9 (and PHP 5.2.10) on 64-bit SLES10 - with the ibm-db2 1.8.2 pdo_odbc extension. Getting a "Child pid nnn exit signal Segmentation fault (11)". 
Program terminated with signal 11, Segmentation fault.
#0  _zval_ptr_dtor (zval_ptr=0x3fffff31c70)
    at /opt/SFI/php-5.2.9/Zend/zend_execute_API.c:412
412             (*zval_ptr)->refcount--;

Was able to circumvent by configuring (now, PHP 5.2.10) with
--enable-debug.  PHP 5.2.10 without --enable-debug fails the same way as did 5.2.9.  Can someone advise if this is the same problem  as bug# 46473 and a prognosis for correction?


Reproduce code:
---------------
Here is a simple recreate script trying to connect to the DB2 "SAMPLE" database:

<?php
 $dbconn = new PDO('odbc:SAMPLE','db2inst1','pw'); /* pw not actual pw
*/
?>


Expected result:
----------------
connection to DB.

Actual result:
--------------
Backtrace:
#0  _zval_ptr_dtor (zval_ptr=0x3fffff31c70)
    at /opt/SFI/php-5.2.9/Zend/zend_execute_API.c:412
#1  0x0000020000a36282 in zend_do_fcall_common_helper_SPEC (
    execute_data=0x3fffff31ec0) at
/opt/SFI/php-5.2.9/Zend/zend_execute.h:155
#2  0x0000020000a26992 in execute (op_array=0x20002bb0d90)
    at /opt/SFI/php-5.2.9/Zend/zend_vm_execute.h:92
#3  0x0000020000a032ac in zend_execute_scripts (type=<value optimized
out>,
    retval=0x0, file_count=2) at /opt/SFI/php-5.2.9/Zend/zend.c:1134
#4  0x00000200009ba4c4 in php_execute_script
(primary_file=0x3fffff344d0)
    at /opt/SFI/php-5.2.9/main/main.c:2023
#5  0x0000020000a970c8 in php_handler (r=0x2aaaade5ba8)
    at /opt/SFI/php-5.2.9/sapi/apache2handler/sapi_apache2.c:632
#6  0x000002aaaaaedce0 in ap_run_handler () from
/usr/sbin/httpd2-prefork
#7  0x000002aaaaaf1516 in ap_invoke_handler () from
/usr/sbin/httpd2-prefork
#8  0x000002aaaaafccd8 in ap_process_request () from
/usr/sbin/httpd2-prefork
#9  0x000002aaaaafa08c in ?? () from /usr/sbin/httpd2-prefork
#10 0x000002aaaaaf55b4 in ap_run_process_connection ()
   from /usr/sbin/httpd2-prefork
#11 0x000002aaaab01190 in ?? () from /usr/sbin/httpd2-prefork
#12 0x000002aaaab014b0 in ?? () from /usr/sbin/httpd2-prefork
#13 0x000002aaaab0158a in ?? () from /usr/sbin/httpd2-prefork
#14 0x000002aaaab021d4 in ap_mpm_run () from /usr/sbin/httpd2-prefork
#15 0x000002aaaaad8646 in main () from /usr/sbin/httpd2-prefork