Description:
------------
See below.

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

$db = new PDO('firebird:dbname=...', 'sysdba', 'foo');

$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);

@$db->exec('drop table test');
$db->exec('CREATE TABLE test(idx int NOT NULL PRIMARY KEY, txt VARCHAR(20))');
$db->exec('INSERT INTO test VALUES(0, \'String0\')');

$stmt = $db->prepare('SELECT idx, txt FROM test ORDER by idx');

$idx = $txt = 0;

$stmt->bindColumn('IDX', $idx);
$stmt->bindColumn('TXT', $txt);
$stmt->execute();

while($stmt->fetch(PDO::FETCH_BOUND)) {
	var_dump(array($idx=>$txt));
}



Actual result:
--------------
array(1) {
  [0]=>
  string(7) "String0"
}
[Mon Feb 16 19:30:09 2009]  Script:  '../test.php'
/home/felipe/dev/php5/main/spprintf.c(775) :  Freeing 0x090E8A64 (79 bytes), script=../test.php
Last leak repeated 1 time
=== Total 2 memory leaks detected ===