Description:
------------
When calling PDO::query(), PHP crashes Apache on certain queries if the SQL-query contains errors.

In the example, Query 1 is correct.
Query 2 is wrong, and the exception is thrown (which is expected).
Query 3 causes Apache to crash.

Reproduce code:
---------------
$dbh = new PDO ('odbc:DRIVER={Microsoft Access Driver (*.mdb)};DBQ=c:/path/to/database/db.mdb', '', '');
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

try
{
//$result = $dbh->query('select * from aktuelles');   //  Query 1: Correct
//$result = $dbh->query('select * from aktuellesX');  //  Query 2: Wrong (Table aktuellesX does not exist)
  $result = $dbh->query('selectX * from aktuelles');  //  Query 3: Wrong (Command selectX does not exist)
  $ret = $result->fetchAll(PDO::FETCH_ASSOC);
}
catch (Exception $e)
{
  echo "Failed: " , $e->getMessage();
}


Expected result:
----------------
PHP throws an exception and displays the error message.

Actual result:
--------------
Apache crashes.