Merge branch '12.5' into 13.0

* 12.5:
  Closes #6521

Author: sebastianbergmann

ChangeLog-13.0.md

@@ -2,6 +2,12 @@
 
 All notable changes of the PHPUnit 13.0 release series are documented in this file using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
 
+## [13.0.5] - 2026-MM-DD
+
+### Fixed
+
+* [#6521](https://github.com/sebastianbergmann/phpunit/issues/6521): Performance regression in PHPUnit 11.5.54, PHPUnit 12.5.13, and PHPUnit 13.0.4
+
 ## [13.0.4] - 2026-02-18
 
 ### Fixed
@@ -62,6 +68,7 @@ All notable changes of the PHPUnit 13.0 release series are documented in this fi
 * [#6285](https://github.com/sebastianbergmann/phpunit/issues/6285): `#[RunClassInSeparateProcess]` attribute
 * [#6356](https://github.com/sebastianbergmann/phpunit/issues/6356): Support for version constraint string argument without explicit version comparison operator
 
+[13.0.5]: https://github.com/sebastianbergmann/phpunit/compare/13.0.4...13.0
 [13.0.4]: https://github.com/sebastianbergmann/phpunit/compare/13.0.3...13.0.4
 [13.0.3]: https://github.com/sebastianbergmann/phpunit/compare/13.0.2...13.0.3
 [13.0.2]: https://github.com/sebastianbergmann/phpunit/compare/13.0.1...13.0.2

src/Runner/ErrorHandler.php

@@ -60,7 +60,6 @@ final class ErrorHandler
     private static ?self $instance          = null;
     private ?Baseline $baseline             = null;
     private ExcludeList $excludeList;
-    private SourceFilter $sourceFilter;
     private bool $enabled                     = false;
     private ?int $originalErrorReportingLevel = null;
     private readonly bool $identifyIssueTrigger;
@@ -101,7 +100,6 @@ public static function instance(): self
     private function __construct(bool $identifyIssueTrigger)
     {
         $this->excludeList          = new ExcludeList;
-        $this->sourceFilter         = SourceFilter::instance();
         $this->identifyIssueTrigger = $identifyIssueTrigger;
     }
 
@@ -376,7 +374,7 @@ private function categorizeFile(string $file, TestMethod $test): Code
             return Code::Test;
         }
 
-        if ($this->sourceFilter->includes($file)) {
+        if (SourceFilter::instance()->includes($file)) {
             return Code::FirstParty;
         }