This PR fixes the warning unserialize(): Function spl_autoload_call() hasn't defined the class it was called for that occurs when unserializing metadata in the ResourceCheckerConfigCache when unserialize_callback_func is set to spl_autoload_call.

The fix adds the allowed_classes => false parameter to the unserialize() call, preventing PHP from attempting to reconstruct objects of unknown classes, which eliminates the warnings while maintaining the intended functionality.

Test case

The issue can be reproduced by:

Addingini_set('unserialize_callback_func', 'spl_autoload_call'); at the beginning of a Symfony application (e.g., inbin/console)
Runningbin/console cache:clear
Observing the warnings about classes that couldn't be found

With this change, the warnings no longer appear while the cache continues to function correctly.

bugsymfony#59196[Config] ResourceCheckerConfigCache metadata unseri…

e50f936

…alize emits warning

carsonbot added Status: Needs Review Bug Config labels

Apr 3, 2025

carsonbot added this to the7.2 milestone

Apr 3, 2025

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carsonbot commentedApr 3, 2025

Hey!

I see that this is your first PR. That is great! Welcome!

Symfony has acontribution guide which I suggest you to read.

In short:

Always add tests
Keep backward compatibility (seehttps://symfony.com/bc).
Bug fixes must be submitted against the lowest maintained branch where they apply (seehttps://symfony.com/releases)
Features and deprecations must be submitted against the 7.3 branch.

Review the GitHub status checks of your pull request and try to solve the reported issues. If some tests are failing, try to see if they are failing because of this change.

When two Symfony core team members approve this change, it will be merged and you will become an official Symfony contributor!
If this PR is merged in a lower version branch, it will be merged up to all maintained branches within a few days.

I am going to sit back now and wait for the reviews.

Cheers!

Carsonbot

carsonbot changed the title~~bug #59196 [Config] ResourceCheckerConfigCache metadata unserialize e…~~[Config] bug #59196 ResourceCheckerConfigCache metadata unserialize e…

Apr 3, 2025

nicolas-grekas approved these changes

Apr 3, 2025

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carsonbot added Status: Reviewed and removed Status: Needs Review labels

Apr 3, 2025

nicolas-grekas changed the title~~[Config] bug #59196 ResourceCheckerConfigCache metadata unserialize e…~~[Config] ResourceCheckerConfigCache metadata unserialize emits warning

Apr 3, 2025