Description:
------------
when executing the code below, PHP will crash with a segmentation fault.

Note: To reproduce the crash, the database "test" must exist and contain a table "user" with an entry with id=1 (or to put it differently: the query must at least return one result).

Versions of software used: 
mysql 5.0.18
php 5.1.6


Reproduce code:
---------------
<?php

class test {
  protected static $dbh;
  protected function connect() {
     self::$dbh = new PDO('mysql:host=localhost;dbname=test', 'test', 'test');
  }

  public function read($uid) {
     self::connect();
     $stmt = self::$dbh->prepare("SELECT * FROM user WHERE id = :uid");
     $result = $stmt->execute(array(':uid' => 1));
     $rows = $result->fetchAll(PDO::FETCH_OBJ);
     var_dump($result, $rows);
  }
 }

 $t = new test();
 $t->read(1);

Expected result:
----------------
some error messages, but no segfault

Actual result:
--------------
segmentation fault:
PHP Fatal error:  Call to a member function fetchAll() on a non-object in /home/chris/workspace/testing/crash.php on line 19

Fatal error: Call to a member function fetchAll() on a non-object in /home/chris/workspace/testing/crash.php on line 19

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1216100688 (LWP 20861)]
0xb7a9cc07 in mysql_more_results () from /usr/lib/mysql/libmysqlclient.so.15
(gdb) bt
#0  0xb7a9cc07 in mysql_more_results () from /usr/lib/mysql/libmysqlclient.so.15
#1  0x0818cdf1 in pdo_row_new ()
#2  0x0818cf6d in pdo_dbstmt_free_storage ()
#3  0x082ddef2 in zend_objects_store_free_object_storage ()
#4  0x082b6cd9 in shutdown_executor ()
#5  0x082c2671 in zend_deactivate ()
#6  0x082809d4 in php_request_shutdown ()
#7  0x08344908 in main ()