ID: 50727 Updated by: j...@php.net Reported By: lodeclaassen at gmail dot com -Status: Assigned +Status: Closed Bug Type: Reproducible crash Operating System: Debian Linux PHP Version: 5.2.12 Assigned To: mysql
Previous Comments: ------------------------------------------------------------------------ [2010-02-01 11:37:49] s...@php.net Automatic comment from SVN on behalf of andrey Revision: http://svn.php.net/viewvc/?view=revision&revision=294298 Log: backport checks from 5.3 which fix one known segfault, and maybe others unknown. Bug #50727 Accesing mysqli->affected_rows on no connection causes segfault ------------------------------------------------------------------------ [2010-01-12 01:28:50] lodeclaassen at gmail dot com Thanks! Do you know what properties/functions are affected apart from affected_rows? Or is that the only one? My current fix/workaround was to test isset(affected_rows), but I've noticed that isset(insert_id) fails even if it has a number. ------------------------------------------------------------------------ [2010-01-12 00:40:27] johan...@php.net Fixed in 5.3. Can reproduce in 5.2. A simple fix for this might be Index: ext/mysqli/mysqli_prop.c =================================================================== --- ext/mysqli/mysqli_prop.c (revision 293046) +++ ext/mysqli/mysqli_prop.c (working copy) @@ -162,7 +162,7 @@ mysql = (MY_MYSQL *)((MYSQLI_RESOURCE *)(obj->ptr))->ptr; - if (!mysql) { + if (!mysql || !mysql->mysql) { ZVAL_NULL(*retval); } else { CHECK_STATUS(MYSQLI_STATUS_VALID); Untested and other properties might be affected - might be better to backport the fix from 5.3. ------------------------------------------------------------------------ [2010-01-12 00:11:21] lodeclaassen at gmail dot com Description: ------------ I open a mysqli connection that failes (in the tested case wrong password). After that when I try to get the affected rows (mysqli->affected_rows) PHP exits and I only get a blank screen. The configure command from phpinfo: './configure' '--with-apxs2' '--with-curl=/usr/local/lib' '--with-gd' '--enable-gd-native-ttf' '--with-ttf' '--with-gettext' '--with-jpeg-dir=/usr/local/lib' '--with-freetype-dir=/usr/local/lib' '--with-kerberos' '--with-openssl' '--with-mcrypt' '--with-mhash' '--with-mysql=/usr/local/mysql' '--with-mysqli=/usr/local/mysql/bin/mysql_config' '--with-pdo-mysql=/usr/local/mysql' '--with-pear' '--with-png-dir=/usr/local/lib' '--with-zlib' '--with-zlib-dir=/usr/local/lib' '--enable-zip' '--with-iconv=/usr/local' '--enable-bcmath' '--enable-calendar' '--enable-ftp' '--enable-magic-quotes' '--enable-sockets' '--enable-mbstring' Other settings I don't know, I don't operate the host. Reproduce code: --------------- <?php echo 'startup<br />'; if (isset($_GET['try']) && $_GET['try'] == 1) { $connection = new mysqli('localhost', 'user', 'wrong password', 'SomeExistingTable'); $connection->query("SELECT `id` FROM `SomeExistingTable` LIMIT 1"); echo 'affected rows: '.$connection->affected_rows.'<br />'; } echo 'ending<br />'; ?> Expected result: ---------------- If I request the file with ?try=0 I expect: startup ending When I request ?try=1 I get nothing, a blank screen. Actual result: -------------- With ?try=1 I expect to see: startup affected rows: ending ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50727&edit=1
