Symfony version(s) affected

6.4.23

Description

In version 6.4.23 you have this method: https://github.com/symfony/symfony/blob/v6.4.23/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php#L769 where return types are added.

In version 6.4.22 you have the same method here: https://github.com/symfony/symfony/blob/v6.4.22/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php#L223 where there are no return types.

I know this technically isn't a BC break, but in practice and lot of normalizers will extend the AbstractObjectNormalizer (and override the getAllowedAttributes method) and hence it will break some applications. In this case it breaks Sylius applications.

How to reproduce

Not relevant

Possible Solution

Remove the return types from this line: https://github.com/symfony/symfony/blob/v6.4.23/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php#L769

Additional Context

No response