ID: 47928 Updated by: [email protected] Reported By: jjuergens at web dot de -Status: Critical +Status: Assigned Bug Type: MySQLi related Operating System: * PHP Version: 5.*, 6CVS (2009-04-19) -Assigned To: +Assigned To: mysql
Previous Comments: ------------------------------------------------------------------------ [2009-04-19 16:19:58] [email protected] In PHP_5_3 / HEAD the crash happens with any BLOB/TEXT types. (due to mysqli_api.c:398) This might be also a MySQL bug since it seems to set MYSQL_TYPE_BLOB always for any blob column. ------------------------------------------------------------------------ [2009-04-19 15:14:49] [email protected] Here's better reproduce data (the longtext column has to have enough data to cause crash): drop database crashtest; create database crashtest; use crashtest; create table crash ( test longtext ); insert into crash set test=' 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 12345678901234567890123456789012345678901234567890 '; grant select on crashtest.* to 'test'@'localhost'; ------------------------------------------------------------------------ [2009-04-19 14:44:29] jjuergens at web dot de Yeah, you're right: Soon as I change the column-type from longtext to text, PHP doesn't crash anymore. The example you provided also crashes on my debug-enabled PHP-Version, while the Opensuse-Version (with Suoshin-Patch) throws efree()-errors until there are more than 396 characters in the textfield. I actually tried to debug the PHP-code some (with very limited knowledge) and I think that the problem is somewhere within the binding of the resultset since thats where the script stops. ------------------------------------------------------------------------ [2009-04-19 14:11:14] [email protected] See also bug #46808 ------------------------------------------------------------------------ [2009-04-19 14:07:02] [email protected] Here is the shortest possible test I could come up with: <?php /* Test database and table with data: drop database crashtest; create database crashtest; use crashtest; create table crash ( test longtext ); insert into crash set test='123456789'; grant select on crashtest.* to 'test'@'localhost'; */ $dbLink=new mysqli("localhost","test","","crashtest",3306); $stmt=$dbLink->prepare("SELECT test FROM crash"); $stmt->execute(); $stmt->bind_result($foo); while($stmt->fetch()); $stmt->close(); ?> The problem seems to be with the longtext column. If that is changed to text column, everything works just fine. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/47928 -- Edit this bug report at http://bugs.php.net/?id=47928&edit=1
