PHP7.0.0RC8 Soap Array Reference Bug

example.php

<?php
ini_set('soap.wsdl_cache_enabled', 0);
ini_set('display_errors', 1);
ini_set('error_reporting', E_ALL | E_STRICT);

class SoapClientFine extends SoapClient {
    public function __call($name, $params) {
        return parent::__call($name, $this->preArgs($params));
    }

    protected function preArgs($params) {
        // Only continue if arguments were given
        if (!array_key_exists(0, $params)) {
            return $params;
        }

        // Assign without reference is OK
        $args = $params[0];

        return $params;
    }
}

class SoapClientBroken extends SoapClientFine {
    protected function preArgs($params) {
        // Only continue if arguments were given
        if (!array_key_exists(0, $params)) {
            return $params;
        }

        // Assign with reference modifies the request!
        $args =& $params[0];

        return $params;
    }
}

echo "PHP Version: " . PHP_VERSION . "\n";

$client  = new SoapClientFine('http://api.rwaws.com/PropertyServices/SupportService.asmx?wsdl', ['trace' => true]);
$res     = $client->GetSuburbsByLocationCountry(['LocationName' => 3000]);
$fineReq = $client->__getLastRequest();

$client  = new SoapClientBroken('http://api.rwaws.com/PropertyServices/SupportService.asmx?wsdl', ['trace' => true]);
$res     = $client->GetSuburbsByLocationCountry(['LocationName' => 3000]);
$badReq  = $client->__getLastRequest();

echo $fineReq == $badReq ? "PASS: Requests Identical\n" : "FAIL: Requests Differ\n";
echo "Fine: $fineReq";
echo "Bad: $badReq";