… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed in symfony#61270, but the executing order of the condition
kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not see the deprecation, but a fatal error instead.

TODO:
 * Add tests
 * Add an issue (see https://forge.typo3.org/issues/108349 for reference)

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

… PHP error

The `class_exists` check and the condition `$definition instanceof ChildDefinition`
have been swapped with symfony#61215 in order to produce an error if a service is not
available.

This error was later relaxed to a deprecation in symfony#61270, but the executing order
of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error
(like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`)
affected uses will not receive the deprecation, but a fatal error instead.

…t trigger a PHP error (bnf)

This PR was merged into the 7.4 branch.

Discussion
----------

[DependencyInjection] Ensure deprecation detection does not trigger a PHP error

`Exception Interface "TYPO3\CMS\Reports\StatusProviderInterface" not found`
See https://forge.typo3.org/issues/108349

| Q             | A
| ------------- | ---
| Branch?       | 7.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        | Fix #62589
| License       | MIT

The `class_exists` check and the condition `$definition instanceof ChildDefinition` have been swapped with #61215 in order to produce an error if a service is not available.

This error was later relaxed in #61270, but the executing order of the condition kept to be `class_exists` first, then `instanceof`.

That means, if `class_exists` fails with a PHP error (like PHP Fatal Error: Interface "My\Vendor\MyInterface" not found`) affected uses will not see the deprecation, but a fatal error instead.

Commits
-------

662d28f [DependencyInjection] Ensure deprecation detection does not trigger a PHP error