#40639 [NEW]: DBLIB driver segfaults on repeated prepared select statements

From: spheroid@php.net Operating system: Mac OS X 10.4.8 PHP version: 5CVS-2007-02-26 (CVS) PHP Bug Type: PDO related Bug description: DBLIB driver segfaults on repeated prepared select statements Description: ------------ The DBLIB PDO driver seems to crash when first execution of repeated prepared statement wont actually return any rows. If the first execution does return rows, it works fine. Reproduce code: --------------- $pdo = new PDO('dblib:host=hostname;dbname=dbname', 'user', 'pass'); $query = "SELECT 'foo' WHERE '1' = :value"; $stmt = $pdo->prepare($query); $values = array('0', '1'); foreach ($values as $value) { $stmt->bindValue(':value', $value); $stmt->execute(); while ($stmt->fetch() !== false); $stmt->closeCursor(); } Expected result: ---------------- Nothing. Actual result: -------------- (gdb) run dblib2.php Starting program: /usr/local/bin/php dblib2.php Reading symbols for shared libraries .+++..+++++..++++.. done Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000000 0x000faf43 in do_fetch (stmt=0x172a624, do_bind=0, return_value=0x172a944, how=PDO_FETCH_USE_DEFAULT, ori=PDO_FETCH_ORI_NEXT, offset=0, return_all=0x0) at /usr/ local/src/PHP_5_2/ext/pdo/pdo_stmt.c:1026 1026 add_assoc_zval (return_value, stmt->columns[i].name, val); -- Edit bug report at http://bugs.php.net/?id=40639&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40639&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40639&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40639&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40639&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40639&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40639&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40639&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40639&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40639&r=support Expected behavior: http://bugs.php.net/fix.php?id=40639&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40639&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40639&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40639&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40639&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40639&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40639&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40639&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40639&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40639&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40639&r=mysqlcfg