Unused triggering on Attributes

[rdohms]

Describe the bug
When importing a class to be used as an attribute, PHPCS reports a SlevomatCodingStandard.Namespaces.UnusedUses.UnusedUse violation.
As it does not seem to detect the attribute usage as a valid usage.

It's clearly described here by @jrfnl rdohms/phpunit-arraysubset-asserts#57

Code sample

use ReturnTypeWillChange;

class ArrayAccessible implements ArrayAccess, IteratorAggregate
{
     *
     * @return mixed
     */
    #[ReturnTypeWillChange]
    public function offsetGet($offset)
    {
        return $this->array[$offset];
    }
{

Custom ruleset

<ruleset>
    <arg name="basepath" value="." />
    <arg name="extensions" value="php" /> <!-- which extensions to look for -->
    <arg name="parallel" value="80" /> <!-- how many parallel processes to run -->
    <arg name="colors" />
    <arg name="cache" value=".phpcs.cache" /> <!-- cache the results and don't commit them -->
    <arg value="np" /> <!-- n = ignore warnings, p = show progress -->

    <file>assertarraysubset-autoload.php</file>
    <file>src</file>
    <file>tests</file>

    <rule ref="DMS">
        <exclude name="SlevomatCodingStandard.TypeHints.PropertyTypeHint.MissingNativeTypeHint"/>
    </rule>

    <rule ref="SlevomatCodingStandard.Operators.DisallowEqualOperators.DisallowedEqualOperator">
        <exclude-pattern>src/Constraint/ArraySubset\.php</exclude-pattern>
    </rule>

    <!-- BC-layer: exclude rules which would prevent code from being PHP cross-version compatible. -->
    <rule ref="Squiz.Classes.ClassFileName.NoMatch">
        <exclude-pattern>assertarraysubset-autoload\.php</exclude-pattern>
        <exclude-pattern>src/ArraySubsetAssertsEmpty\.php</exclude-pattern>
        <exclude-pattern>src/AssertFallThrough\.php</exclude-pattern>
    </rule>
    <rule ref="SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing">
        <exclude-pattern>assertarraysubset-autoload\.php</exclude-pattern>
        <exclude-pattern>src/ArraySubsetAssertsEmpty\.php</exclude-pattern>
        <exclude-pattern>src/AssertFallThrough\.php</exclude-pattern>
        <exclude-pattern>tests/bootstrap\.php</exclude-pattern>
        <exclude-pattern>tests/Availability/*\.php</exclude-pattern>
    </rule>
    <rule ref="SlevomatCodingStandard.Namespaces.ReferenceUsedNamesOnly.ReferenceViaFullyQualifiedName">
        <exclude-pattern>assertarraysubset-autoload\.php</exclude-pattern>
        <exclude-pattern>tests/Availability/*\.php</exclude-pattern>
    </rule>
    <rule ref="SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint">
        <exclude-pattern>assertarraysubset-autoload\.php</exclude-pattern>
        <exclude-pattern>src/AssertFallThrough\.php</exclude-pattern>
    </rule>
    <rule ref="SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint">
        <exclude-pattern>assertarraysubset-autoload\.php</exclude-pattern>
        <exclude-pattern>src/AssertFallThrough\.php</exclude-pattern>
        <exclude-pattern>tests/Availability/*\.php</exclude-pattern>
    </rule>

</ruleset>

To reproduce
Steps to reproduce the behavior:

1. Create a file called test.php with the code sample above.
2. Run phpcs test.php ...
3. See error message displayed

FILE: test.php
------------------------------------------------------------------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
------------------------------------------------------------------------------------------------------------------------------
 9 | ERROR | [x] Type ReturnTypeWillChange is not used in this file.
   |       |     (SlevomatCodingStandard.Namespaces.UnusedUses.UnusedUse)
------------------------------------------------------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
------------------------------------------------------------------------------------------------------------------------------

Expected behavior
No errors should be reported.

Versions (please complete the following information):

• PHP: 8.0
• PHPCS: 3.6.1

[jrfnl]

@rdohms The sniff you are referring to is not part of PHPCS. Could you please report this to the Slevomat repo instead ?
https://github.com/slevomat/coding-standard

[rdohms]

Derp, that explains why i could not find a report similar... my bad.