Edit report at http://bugs.php.net/bug.php?id=51601&edit=1
ID: 51601
Updated by: johan...@php.net
Reported by: pcarter at jhu dot edu
Summary: Segmentation fault when using the 2-argument form of
mysql_fetch_array
-Status: Assigned
+Status: Feedback
Type: Bug
Package: MySQL related
Operating System: FreeBSD 6.2-RELEASE
PHP Version: 5.3.2
Assigned To: mysql
New Comment:
Could you please provide the configure line. Please also try using plain
PHP, not ports which applies random patches we don't control.
Please also make sure that you're loading the correct mysql.so in case
you're building the mysql extension shared.
Previous Comments:
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[2010-04-29 14:47:07] elmex at voll dot in
i have problems with mysql_fetch_array($resurce, MYSQL_ASSOC) returning
no result set, if i replace it with mysql_fetch_assoc($resurce) it works
fine
this happens since update to last 5.3 php with freebsd ports....
------------------------------------------------------------------------
[2010-04-22 03:14:55] pcarter at jhu dot edu
The problem persists with php5.3-201004220030. The backtrace is
identical save instruction addresses.
------------------------------------------------------------------------
[2010-04-22 02:19:19] fel...@php.net
Please try using this snapshot:
http://snaps.php.net/php5.3-latest.tar.gz
For Windows:
http://windows.php.net/snapshots/
------------------------------------------------------------------------
[2010-04-19 17:04:44] pcarter at jhu dot edu
I missed on the package dropdown when submitting the bug. This belongs
with the MySQL package, not the MSSQL package.
------------------------------------------------------------------------
[2010-04-19 17:03:06] pcarter at jhu dot edu
Description:
------------
When using the two-argument form of mysql_fetch_array PHP experiences a
segmentation fault in zend_fetch_resource, attempting to dereference a
null pointer. (specifically *passed_id is ((* zval)(0x0)) when
performing the IS_RESOURCE check). This happens regardless of which of
the three MYSQL_{BOTH|ASSOC|NUM} constants are used as the second
argument (the given script uses MYSQL_BOTH). This problem does not
occur when using the single argument form of mysql_fetch_array, and it
does not occur when using the mysql_fetch_assoc() or mysql_fetch_row()
functions.
Test environment is FreeSBD 6.2-RELEASE on amd64, with the MySQL 5.0
client library installed.
Test script:
---------------
<?php
/* Assumuing that these credentials are valid */
$d = mysql_connect('localhost', 'user', '');
mysql_select_db('test', $d);
$r = mysql_query("SHOW TABLES", $d);
$row = mysql_fetch_array($r, MYSQL_BOTH);
print_r($row);
?>
Expected result:
----------------
The script should print an array (numerically and associatively indexed)
of the tables in the database "test".
Actual result:
--------------
Segmentation fault as noted above. Backtrace:
Backtrace:
#0 0x0000000000638ed3 in zend_fetch_resource (passed_id=0x7fffffffce30,
default_id=-1, resource_type_name=0x72fa51 "MySQL result",
found_resource_type=0x0, num_resource_types=1)
at /usr/local/src/php-5.3.2/Zend/zend_list.c:127
#1 0x00000000004d76a6 in php_mysql_fetch_hash (ht=2,
return_value=0x9240a0, return_value_ptr=0x638ddf, this_ptr=0x0,
return_value_used=1, result_type=3, expected_args=2, into_object=0)
at /usr/local/src/php-5.3.2/ext/mysql/php_mysql.c:1944
#2 0x00000000004d7c2b in zif_mysql_fetch_array (ht=-12752,
return_value=0xffffffff, return_value_ptr=0x638ddf, this_ptr=0x0,
return_value_used=1) at
/usr/local/src/php-5.3.2/ext/mysql/php_mysql.c:2105
#3 0x000000000064e192 in zend_do_fcall_common_helper_SPEC
(execute_data=0xb45040) at zend_vm_execute.h:313
#4 0x000000000064d5b9 in execute (op_array=0x9248c8) at
zend_vm_execute.h:104
#5 0x000000000062b765 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /usr/local/src/php-5.3.2/Zend/zend.c:1194
#6 0x00000000005d955b in php_execute_script
(primary_file=0x7fffffffeb00) at
/usr/local/src/php-5.3.2/main/main.c:2260
#7 0x00000000006b2bca in main (argc=2, argv=0x7fffffffec00) at
/usr/local/src/php-5.3.2/sapi/cli/php_cli.c:1192
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Edit this bug report at http://bugs.php.net/bug.php?id=51601&edit=1
