#40260 [NEW]: PDO causing segfault in PHP

From: kyle at grishlan dot com Operating system: Linux-Gentoo PHP version: 5.2.0 PHP Bug Type: PDO related Bug description: PDO causing segfault in PHP Description: ------------ I have a PDO object connecting to a MySQL database, and I pass the object to the __construct function of a new object. In the __construct function, I attempt to make prepared statement with the PDO object, and if I then exit(1) or die(), without unsetting the PDOStatement object, PHP segfaults. This is a similar bug to http://bugs.php.net/bug.php?id=37445 (In that it has the same final few functions in the backtrace), but I don't believe it to be the same issue. I have also tried (per that bug's comments) mysql_statement.c versions 1.48.2.12, 1.48.2.13, 1.48.2.14, and 1.48.2.14.2.2, but they've all reproduced the problem. My PHP is version 5.1.6-r6 (I'm not running 5.2+ as it's not currently in the gentoo repository. Reproduce code: --------------- <?php class MyClass { public function __construct($pdo) { $stmt = $pdo->prepare("SELECT * FROM my_table_name"); $stmt->execute(); while ($row = $stmt->fetch()) print_r($row); $stmt->closeCursor(); // Commenting this out makes PHP segfault unset($stmt); // Commenting this out (if commented above) fixes the segfault exit(1); } }; $pdo = new PDO('mysql:host=localhost;dbname=my_db_name', 'root', ''); $pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, TRUE); $myclass = new MyClass($pdo); ?> Expected result: ---------------- No output. Actual result: -------------- Segmentation fault (backtrace provided below) (gdb) backt #0 0xb76566ae in mysql_more_results (mysql=0x5a5a5a5a) at libmysql.c:5136 #1 0x081cd839 in pdo_mysql_stmt_dtor (stmt=0x87fb374) at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/ext/pdo_mysql/mysql_statement.c:71 #2 0x081c5897 in free_statement (stmt=0x87fb374) at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/ext/pdo/pdo_stmt.c:2200 #3 0x08309d58 in zend_objects_store_free_object_storage (objects=0x86815ec) at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/Zend/zend_objects_API.c:86 #4 0x082e23bb in shutdown_executor () at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/Zend/zend_execute_API.c:281 #5 0x082eddfd in zend_deactivate () at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/Zend/zend.c:854 #6 0x082aa5a3 in php_request_shutdown (dummy=0x0) at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/main/main.c:1292 #7 0x0837e7aa in main (argc=2, argv=0xbf910804) at /var/tmp/portage/php-5.1.6-r6/work/php-5.1.6/sapi/cli/php_cli.c:1246 -- Edit bug report at http://bugs.php.net/?id=40260&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40260&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40260&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40260&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40260&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40260&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40260&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40260&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40260&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40260&r=support Expected behavior: http://bugs.php.net/fix.php?id=40260&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40260&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40260&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40260&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40260&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40260&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40260&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40260&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40260&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40260&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40260&r=mysqlcfg