Description:
------------
Centos 6.2
nginx 1.2
php 5.4.4
mysqlnd-ms 1.3.2
Percona XtraDB Cluster 5.5


When I run test.php -> randomly PHP process crashed with a segfault ("signal 11 
SIGSEGV")

If I remove "$conn->beginTransaction()" from test.php -> work OK

If I remove master_0 or master_1 from /etc/mysqlnd_ms.json -> work OK




Test script:
---------------
/etc/php.d/mysqlnd_ms.ini
--------------------------
extension=mysqlnd_ms.so
mysqlnd_ms.enable = 1
mysqlnd_ms.ini_file = "/etc/mysqlnd_ms.json"
mysqlnd_ms.multi_master = 1
mysqlnd_ms.disable_rw_split = 1

/etc/mysqlnd_ms.json
---------------------
{
    "test": {
        "master": {
            "master_0": {
                "host": "192.168.64.205",
                "port": "3306"
            },
            "master_1": {
                "host": "192.168.64.206",
                "port": "3306"
            }
        },
        "slave":{
        },
        "failover": "master"
    }
}

test.php
----------
<?php
$conn = new PDO("mysql:host=test", "root", "datadec");
$conn->beginTransaction();
$ret = $conn->query("SELECT @@hostname");
echo "<br> Connect to ".$ret->fetch(PDO::FETCH_ASSOC)['@@hostname']."<br>";
$conn->commit();
$conn = null;
?>