From: michael at cosby dot dhs dot org
Operating system: Linux 2.6
PHP version: 5.0.4
PHP Bug Type: MySQL related
Bug description: mysql_fetch_field() causes segmentation fault
Description:
------------
environment:
apache 2.0.52 in multi-threaded mode
mysql 4.1.11 (and 4.1.6-gamma)
PHP 5.0.4
php configuration:
./configure --with-apxs2=/usr/sbin/apxs \
--with-zlib --enable-calendar \
--with-gd --with-mhash \
--with-xsl --enable-memory-limit \
--prefix=/home/php --with-mysql \
--with-openssl --with-jpeg-dir=/usr/lib \
--with-gettext \
--with-curl=/usr/local/lib
Notes:
* This bug does not occur if I use PHP 5.0.2 in the same environment
instead of PHP 5.0.4.
* It's possible that the fix for bug #31288 is related to this issue. This
code does *not* call the (deprecated) function mysql_list_fields() at all.
Reproduce code:
---------------
The following code snippet (taken from WordPress wp-includes/wp-db.php, a
blogging program):
while ($i < mysql_num_fields($this->result)) {
$this->col_info[$i] = mysql_fetch_field($this->result);
$i++;
}
Even a single invocation of mysql_fetch_field() will cause the seg.
fault. Nothing is written to the server's error log from PHP itself.
Expected result:
----------------
Code inside a script should not cause a seg. fault.
Actual result:
--------------
When using the code snippet specified, the apache child running the
request seg. faults.
--
Edit bug report at http://bugs.php.net/?id=32675&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32675&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=32675&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=32675&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=32675&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=32675&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=32675&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=32675&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=32675&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=32675&r=support
Expected behavior: http://bugs.php.net/fix.php?id=32675&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=32675&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=32675&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=32675&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32675&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=32675&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=32675&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=32675&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=32675&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=32675&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=32675&r=mysqlcfg
