Symfony version(s) affected

7.2.1

Description

The ResourceCheckerConfigCache may crash while in dev environement /debug mode on unserialize.

In ResourceCheckerConfigCache.php line 130:
Warning: unserialize(): Function spl_autoload_call() hasn't defined the class it was called for

This happens if there is an additional unserialize_callback_func set

ini_set('unserialize_callback_func', 'spl_autoload_call');

How to reproduce

https://github.com/simitter/symfony_config_unserialize_bug

Steps:
On an empty cache bin/console should trigger the bug

Possible Solution

Using the allowed_classes parameter of unserialize should force every class to be __Php_Incomoplete_Class before triggering unserialize_callback_func.

Only suppressing the error on unseralize would prevent the metadata json file to be written / contain the correct data.

Additional Context

No response