Compile Error - Proxy not compatible with entity class on PHP 7.1

[jazithedev]

[Symfony\Component\Debug\Exception\FatalErrorException]
Compile Error: Declaration of Proxies_CG_\Project\UserBundle\Entity\Role::__construct($initializer = NULL, $cloner = NULL) must be compatible with Project\LocaleBundle\Locale\EntityExt\LocalesInterface::__construct(?Project\LocaleBundle\Locale\EntityExt\Locales $locale = NULL)

Proxy:

<?php

namespace Proxies\__CG__\Project\UserBundle\Entity;

/**
 * DO NOT EDIT THIS FILE - IT WAS CREATED BY DOCTRINE'S PROXY GENERATOR
 */
class Role extends \Project\UserBundle\Entity\Role implements \Doctrine\ORM\Proxy\Proxy
{
    /**
     * @var \Closure the callback responsible for loading properties in the proxy object. This callback is called with
     *      three parameters, being respectively the proxy object to be initialized, the method that triggered the
     *      initialization process and an array of ordered parameters that were passed to that method.
     *
     * @see \Doctrine\Common\Persistence\Proxy::__setInitializer
     */
    public $__initializer__;

    /**
     * @var \Closure the callback responsible of loading properties that need to be copied in the cloned object
     *
     * @see \Doctrine\Common\Persistence\Proxy::__setCloner
     */
    public $__cloner__;

    /**
     * @var boolean flag indicating if this object was already initialized
     *
     * @see \Doctrine\Common\Persistence\Proxy::__isInitialized
     */
    public $__isInitialized__ = false;

    /**
     * @var array properties to be lazy loaded, with keys being the property
     *            names and values being their default values
     *
     * @see \Doctrine\Common\Persistence\Proxy::__getLazyProperties
     */
    public static $lazyPropertiesDefaults = [];



    /**
     * @param \Closure $initializer
     * @param \Closure $cloner
     */
    public function __construct($initializer = null, $cloner = null)
    {

        $this->__initializer__ = $initializer;
        $this->__cloner__      = $cloner;
    }


//  [...]
}

Entity:

/**
 * @ORM\Entity
 * @ORM\Table(name="users_roles")
 */
class Role extends EntityWithLocales implements RoleInterface
{
//  [...]

    /**
     * Role constructor.
     *
     * @param Locales|null $locale
     */
    public function __construct(Locales $locale = null)
    {
        $this->users   = new Collections\ArrayCollection();
        $this->locales = new Collections\ArrayCollection();

        parent::__construct($locale ?? new RoleLocale());
    }
//  [...]
}

Above occurs when I'm using Doctrine Fixtures and method getReference(). Everything is okay (no errors like above) when I just traverse trough the project pages or do not use above method in Fixtures.

I got similar problem in other case:
https://stackoverflow.com/questions/43521985/symfony-3-doctrine-proxy-error-after-entity-magic-method-change-with-php-7-t

PHP 7.1 here.

[Ocramius]

What's your doctrine/common version? Please upgrade to latest.

[jazithedev]

@Ocramius

Part of my composer.json file:

        "doctrine/doctrine-bundle": "^1.6",
        "doctrine/doctrine-cache-bundle": "^1.2",
        "doctrine/orm": "^2.5",

In my composer.lock there is v2.7.2 of doctrine/common.

[Ocramius]

Wait, your LocalesInterface#__construct() is interfaced? I'm afraid there's nothing we can do for this right now. The only solution will be to switch to ProxyManager at some point (#1241).

This is a limitation of the library that can't be fixed in 2.x

[jazithedev]

So I presume, that this also applies for all magic methods?
In THIS example I tried to define PHP7 types in __get.

[Ocramius]

@ktrzos magic methods are usually fixed/predefined, so even if you interface them, usually everything is fine.

In general, #1241 fixes all these concerns, but it won't be ready for a while...

[Ocramius]

@ktrzos for the magic method definitions, Ocramius/ProxyManager#350 is relevant.

[Majkl578]

Doctrine 3.0 will be switching to ProxyManager so this issue could be closed.