Multiple inheritance mapped superclasses in different namespaces

[cyrilverloop]

Bug Report

Q	A
BC Break	yes/no
Version	2.19 => 3.2

Summary

Hi,

On a Symfony 7 app, you can not have multiple inheritance mapped superclasses in different namespaces.

May be related to : #11404

Current behavior

Generating the migrations with ./bin/console make:migration gives the error : Duplicate definition of column 'id' on entity 'App\Entity\Daughter' in a field or discriminator column mapping.

How to reproduce

<?php

declare(strict_types=1);

namespace App\SomewhereElse;

use Doctrine\DBAL\Types\Types;
use Doctrine\ORM\Mapping as ORM;

#[ORM\MappedSuperclass()]
abstract class BaseEntity
{
    #[
        ORM\Id(),
        ORM\Column(type: Types::INTEGER),
        ORM\GeneratedValue(strategy: "AUTO")
    ]
    protected ?int $id;
}

<?php

declare(strict_types=1);

namespace App\Entity;

use Doctrine\DBAL\Types\Types;
use Doctrine\ORM\Mapping as ORM;

#[ORM\MappedSuperclass()]
abstract class BaseEntity
{
    #[
        ORM\Id(),
        ORM\Column(type: Types::INTEGER),
        ORM\GeneratedValue(strategy: "AUTO")
    ]
    protected ?int $id;
}

<?php

declare(strict_types=1);

namespace App\Entity;

use App\SomewhereElse\BaseEntity; // Comment this line to make the problem disappear.
use Doctrine\ORM\Mapping as ORM;

#[ORM\MappedSuperclass()]
abstract class Mother extends BaseEntity {}

<?php

declare(strict_types=1);

namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;

#[ORM\Entity()]
class Daughter extends Mother {}

If App\Entity\Mother extends App\SomewhereElse\BaseEntity, the error appears (report_fields_where_declared: true with ORM 2.x).
If App\Entity\Mother extends App\Entity\BaseEntity, it works.

Expected behavior

I would like to be able to extend mapped superclasses from libraries (other namespaces).