diff --git a/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php b/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php
index cb809abbaf..257c6f7a93 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php
@@ -70,7 +70,7 @@ class EntityUserProviderTest extends TestCase
     {
         $user = new User(1, 1, 'user1');
 
-        $repository = $this->createMock([ObjectRepository::class, UserLoaderInterface::class]);
+        $repository = $this->createMock(UserLoaderRepository::class);
         $repository
             ->expects($this->once())
             ->method('loadUserByUsername')
@@ -156,7 +156,7 @@ class EntityUserProviderTest extends TestCase
 
     public function testLoadUserByUserNameShouldLoadUserWhenProperInterfaceProvided()
     {
-        $repository = $this->createMock([ObjectRepository::class, UserLoaderInterface::class]);
+        $repository = $this->createMock(UserLoaderRepository::class);
         $repository->expects($this->once())
             ->method('loadUserByUsername')
             ->with('name')
@@ -189,7 +189,7 @@ class EntityUserProviderTest extends TestCase
     {
         $user = new User(1, 1, 'user1');
 
-        $repository = $this->createMock([interface_exists(ObjectRepository::class) ? ObjectRepository::class : LegacyObjectRepository::class, PasswordUpgraderInterface::class]);
+        $repository = $this->createMock(PasswordUpgraderRepository::class);
         $repository->expects($this->once())
             ->method('upgradePassword')
             ->with($user, 'foobar');
@@ -233,3 +233,11 @@ class EntityUserProviderTest extends TestCase
         ]);
     }
 }
+
+abstract class UserLoaderRepository implements ObjectRepository, UserLoaderInterface
+{
+}
+
+abstract class PasswordUpgraderRepository implements ObjectRepository, PasswordUpgraderInterface
+{
+}
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
index 2bc6de0705..ba369e43f8 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/CoverageListenerTrait.php
@@ -13,6 +13,7 @@ namespace Symfony\Bridge\PhpUnit\Legacy;
 
 use PHPUnit\Framework\TestCase;
 use PHPUnit\Framework\Warning;
+use PHPUnit\Util\Annotation\Registry;
 use PHPUnit\Util\Test;
 
 /**
@@ -66,9 +67,6 @@ class CoverageListenerTrait
             return;
         }
 
-        $r = new \ReflectionProperty(Test::class, 'annotationCache');
-        $r->setAccessible(true);
-
         $covers = $sutFqcn;
         if (!\is_array($sutFqcn)) {
             $covers = [$sutFqcn];
@@ -78,15 +76,42 @@ class CoverageListenerTrait
             }
         }
 
+        if (class_exists(Registry::class)) {
+            $this->addCoversForDocBlockInsideRegistry($test, $covers);
+
+            return;
+        }
+
+        $this->addCoversForClassToAnnotationCache($test, $covers);
+    }
+
+    private function addCoversForClassToAnnotationCache($test, $covers)
+    {
+        $r = new \ReflectionProperty(Test::class, 'annotationCache');
+        $r->setAccessible(true);
+
         $cache = $r->getValue();
         $cache = array_replace_recursive($cache, [
             \get_class($test) => [
                 'covers' => $covers,
             ],
         ]);
+
         $r->setValue(Test::class, $cache);
     }
 
+    private function addCoversForDocBlockInsideRegistry($test, $covers)
+    {
+        $docBlock = Registry::getInstance()->forClassName(\get_class($test));
+
+        $symbolAnnotations = new \ReflectionProperty($docBlock, 'symbolAnnotations');
+        $symbolAnnotations->setAccessible(true);
+
+        $symbolAnnotations->setValue($docBlock, array_replace($docBlock->symbolAnnotations(), [
+            'covers' => $covers,
+        ]));
+    }
+
     private function findSutFqcn($test)
     {
         if ($this->sutFqcnResolver) {
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Test/WebTestCaseTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Test/WebTestCaseTest.php
index a68c9f510c..efa3fbfb1f 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/Test/WebTestCaseTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Test/WebTestCaseTest.php
@@ -71,7 +71,7 @@ class WebTestCaseTest extends TestCase
     {
         $this->getResponseTester(new Response('', 302, ['Location' => 'https://example.com/']))->assertResponseRedirects('https://example.com/', 302);
         $this->expectException(AssertionFailedError::class);
-        $this->expectExceptionMessage('is redirected and has header "Location" with value "https://example.com/" and status code is 301.');
+        $this->expectExceptionMessageMatches('#(:?\( )?is redirected and has header "Location" with value "https://example\.com/" (:?\) )?and status code is 301\.#');
         $this->getResponseTester(new Response('', 302))->assertResponseRedirects('https://example.com/', 301);
     }
 
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php b/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
index d9ece4216d..46b8845614 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
+++ b/src/Symfony/Bundle/WebProfilerBundle/Tests/Controller/ProfilerControllerTest.php
@@ -382,10 +382,12 @@ class ProfilerControllerTest extends WebTestCase
             ->with($profile->getToken())
             ->willReturn($profile);
 
+        $collectorsNames = array_keys($profile->getCollectors());
+
         $profiler
             ->expects($this->atLeastOnce())
             ->method('has')
-            ->with($this->logicalXor($collectorsNames = array_keys($profile->getCollectors())))
+            ->with($this->logicalXor(...$collectorsNames))
             ->willReturn(true);
 
         $expectedTemplate = 'expected_template.html.twig';
diff --git a/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php b/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php
index b534e5dc8a..6bbab9da4f 100644
--- a/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php
+++ b/src/Symfony/Component/Cache/DependencyInjection/CacheCollectorPass.php
@@ -47,15 +47,13 @@ class CacheCollectorPass implements CompilerPassInterface
         }
 
         foreach ($container->findTaggedServiceIds($this->cachePoolTag) as $id => $attributes) {
-            $this->addToCollector($id, $container);
+            $poolName = $attributes[0]['name'] ?? $id;
 
-            if (($attributes[0]['name'] ?? $id) !== $id) {
-                $this->addToCollector($attributes[0]['name'], $container);
-            }
+            $this->addToCollector($id, $poolName, $container);
         }
     }
 
-    private function addToCollector(string $id, ContainerBuilder $container)
+    private function addToCollector(string $id, string $name, ContainerBuilder $container)
     {
         $definition = $container->getDefinition($id);
         if ($definition->isAbstract()) {
@@ -77,7 +75,7 @@ class CacheCollectorPass implements CompilerPassInterface
         $container->setDefinition($id, $recorder);
 
         // Tell the collector to add the new instance
-        $collectorDefinition->addMethodCall('addInstance', [$id, new Reference($id)]);
+        $collectorDefinition->addMethodCall('addInstance', [$name, new Reference($id)]);
         $collectorDefinition->setPublic(false);
     }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
index 3e723f1b6a..53295a1eef 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/ChainAdapterTest.php
@@ -16,8 +16,8 @@ use Symfony\Component\Cache\Adapter\AdapterInterface;
 use Symfony\Component\Cache\Adapter\ArrayAdapter;
 use Symfony\Component\Cache\Adapter\ChainAdapter;
 use Symfony\Component\Cache\Adapter\FilesystemAdapter;
-use Symfony\Component\Cache\PruneableInterface;
 use Symfony\Component\Cache\Tests\Fixtures\ExternalAdapter;
+use Symfony\Component\Cache\Tests\Fixtures\PrunableAdapter;
 
 /**
  * @author Kévin Dunglas <dunglas@gmail.com>
@@ -189,7 +189,7 @@ class ChainAdapterTest extends AdapterTestCase
 
     private function getPruneableMock(): AdapterInterface
     {
-        $pruneable = $this->createMock([PruneableInterface::class, AdapterInterface::class]);
+        $pruneable = $this->createMock(PrunableAdapter::class);
 
         $pruneable
             ->expects($this->atLeastOnce())
@@ -201,7 +201,7 @@ class ChainAdapterTest extends AdapterTestCase
 
     private function getFailingPruneableMock(): AdapterInterface
     {
-        $pruneable = $this->createMock([PruneableInterface::class, AdapterInterface::class]);
+        $pruneable = $this->createMock(PrunableAdapter::class);
 
         $pruneable
             ->expects($this->atLeastOnce())
diff --git a/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php b/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
index e0111c1d6c..4d60f4cbd4 100644
--- a/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
+++ b/src/Symfony/Component/Cache/Tests/Adapter/TagAwareAdapterTest.php
@@ -18,7 +18,7 @@ use Symfony\Component\Cache\Adapter\AdapterInterface;
 use Symfony\Component\Cache\Adapter\ArrayAdapter;
 use Symfony\Component\Cache\Adapter\FilesystemAdapter;
 use Symfony\Component\Cache\Adapter\TagAwareAdapter;
-use Symfony\Component\Cache\PruneableInterface;
+use Symfony\Component\Cache\Tests\Fixtures\PrunableAdapter;
 use Symfony\Component\Cache\Tests\Traits\TagAwareTestTrait;
 
 /**
@@ -204,7 +204,7 @@ class TagAwareAdapterTest extends AdapterTestCase
      */
     private function getPruneableMock(): AdapterInterface
     {
-        $pruneable = $this->createMock([PruneableInterface::class, AdapterInterface::class]);
+        $pruneable = $this->createMock(PrunableAdapter::class);
 
         $pruneable
             ->expects($this->atLeastOnce())
@@ -216,7 +216,7 @@ class TagAwareAdapterTest extends AdapterTestCase
 
     private function getFailingPruneableMock(): AdapterInterface
     {
-        $pruneable = $this->createMock([PruneableInterface::class, AdapterInterface::class]);
+        $pruneable = $this->createMock(PrunableAdapter::class);
 
         $pruneable
             ->expects($this->atLeastOnce())
diff --git a/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php b/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php
index 8aff19fc3e..d0ea55313b 100644
--- a/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php
+++ b/src/Symfony/Component/Cache/Tests/DependencyInjection/CacheCollectorPassTest.php
@@ -19,6 +19,8 @@ use Symfony\Component\Cache\Adapter\TraceableAdapter;
 use Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter;
 use Symfony\Component\Cache\DataCollector\CacheDataCollector;
 use Symfony\Component\Cache\DependencyInjection\CacheCollectorPass;
+use Symfony\Component\Cache\Tests\Fixtures\ArrayCache;
+use Symfony\Component\DependencyInjection\Compiler\PassConfig;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Reference;
 
@@ -48,16 +50,51 @@ class CacheCollectorPassTest extends TestCase
         $this->assertEquals([
             ['addInstance', ['fs', new Reference('fs')]],
             ['addInstance', ['tagged_fs', new Reference('tagged_fs')]],
-            ['addInstance', ['.php.inner', new Reference('.php.inner')]],
-            ['addInstance', ['php', new Reference('php')]],
+            ['addInstance', ['php', new Reference('.php.inner')]],
         ], $collector->getMethodCalls());
 
         $this->assertSame(TraceableAdapter::class, $container->findDefinition('fs')->getClass());
         $this->assertSame(TraceableTagAwareAdapter::class, $container->getDefinition('tagged_fs')->getClass());
 
         $this->assertSame(TraceableAdapter::class, $container->findDefinition('.php.inner')->getClass());
-        $this->assertSame(TraceableTagAwareAdapter::class, $container->getDefinition('php')->getClass());
+        $this->assertSame(TagAwareAdapter::class, $container->getDefinition('php')->getClass());
 
         $this->assertFalse($collector->isPublic(), 'The "data_collector.cache" should be private after processing');
     }
+
+    public function testProcessCacheObjectsAreDecorated()
+    {
+        $container = new ContainerBuilder();
+        $collector = $container->register('data_collector.cache', CacheDataCollector::class);
+
+        $container
+            ->register('cache.object', ArrayCache::class)
+            ->addTag('cache.pool', ['name' => 'cache.object']);
+
+        $container
+            ->register('something_is_decorating_cache_object', TagAwareAdapter::class)
+            ->setPublic(true)
+            ->setDecoratedService('cache.object');
+
+        $container->register('some_service_using_cache_object', TraceableAdapter::class)
+            ->setPublic(true)
+            ->addArgument(new Reference('cache.object'));
+
+        $container->addCompilerPass(new CacheCollectorPass(), PassConfig::TYPE_BEFORE_REMOVING);
+
+        $container->compile();
+        $this->assertCount(1, $collector->getMethodCalls());
+        $this->assertEquals(
+            [
+                [
+                    'addInstance',
+                    [
+                        'cache.object',
+                        new Reference('something_is_decorating_cache_object'),
+                    ],
+                ],
+            ],
+            $collector->getMethodCalls()
+        );
+    }
 }
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/PrunableAdapter.php b/src/Symfony/Component/Cache/Tests/Fixtures/PrunableAdapter.php
new file mode 100644
index 0000000000..9668ed595f
--- /dev/null
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/PrunableAdapter.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Tests\Fixtures;
+
+use Symfony\Component\Cache\Adapter\AdapterInterface;
+use Symfony\Component\Cache\PruneableInterface;
+
+abstract class PrunableAdapter implements AdapterInterface, PruneableInterface
+{
+}
diff --git a/src/Symfony/Component/Cache/Tests/Fixtures/PrunableCache.php b/src/Symfony/Component/Cache/Tests/Fixtures/PrunableCache.php
new file mode 100644
index 0000000000..c1b3f74012
--- /dev/null
+++ b/src/Symfony/Component/Cache/Tests/Fixtures/PrunableCache.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Tests\Fixtures;
+
+use Psr\SimpleCache\CacheInterface;
+use Symfony\Component\Cache\PruneableInterface;
+
+abstract class PrunableCache implements CacheInterface, PruneableInterface
+{
+}
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index e10e6c3dd5..58da243d9c 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -326,7 +326,7 @@ EOF;
             $this->asFiles = false;
 
             if ($this->preload && null !== $autoloadFile = $this->getAutoloadFile()) {
-                $autoloadFile = substr($this->export($autoloadFile), 2, -1);
+                $autoloadFile = trim($this->export($autoloadFile), '()\\');
 
                 $preloadedFiles = array_reverse($preloadedFiles);
                 $preloadedFiles = implode("';\nrequire __DIR__.'/", $preloadedFiles);
@@ -2123,9 +2123,7 @@ EOF;
 
     private function getAutoloadFile(): ?string
     {
-        if (null === $this->targetDirRegex) {
-            return null;
-        }
+        $file = null;
 
         foreach (spl_autoload_functions() as $autoloader) {
             if (!\is_array($autoloader)) {
@@ -2144,14 +2142,14 @@ EOF;
                 if (0 === strpos($class, 'ComposerAutoloaderInit') && $class::getLoader() === $autoloader[0]) {
                     $file = \dirname((new \ReflectionClass($class))->getFileName(), 2).'/autoload.php';
 
-                    if (preg_match($this->targetDirRegex.'A', $file)) {
+                    if (null !== $this->targetDirRegex && preg_match($this->targetDirRegex.'A', $file)) {
                         return $file;
                     }
                 }
             }
         }
 
-        return null;
+        return $file;
     }
 
     private function getClasses(Definition $definition, string $id): array
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/StringToFloatTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/StringToFloatTransformerTest.php
index d2c800be67..b5a2008fa0 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/StringToFloatTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/StringToFloatTransformerTest.php
@@ -16,18 +16,6 @@ use Symfony\Component\Form\Extension\Core\DataTransformer\StringToFloatTransform
 
 class StringToFloatTransformerTest extends TestCase
 {
-    private $transformer;
-
-    protected function setUp(): void
-    {
-        $this->transformer = new StringToFloatTransformer();
-    }
-
-    protected function tearDown(): void
-    {
-        $this->transformer = null;
-    }
-
     public function provideTransformations(): array
     {
         return [
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
index d5ac4ad5c2..de6dfc2546 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
@@ -170,9 +170,9 @@ class ControllerResolverTest extends TestCase
         $controller = new ControllerTest();
 
         return [
-            ['foo', \Error::class, 'Class \'foo\' not found'],
-            ['oof::bar', \Error::class, 'Class \'oof\' not found'],
-            [['oof', 'bar'], \Error::class, 'Class \'oof\' not found'],
+            ['foo', \Error::class, \PHP_VERSION_ID < 80000 ? 'Class \'foo\' not found' : 'Class "foo" not found'],
+            ['oof::bar', \Error::class, \PHP_VERSION_ID < 80000 ? 'Class \'oof\' not found' : 'Class "oof" not found'],
+            [['oof', 'bar'], \Error::class, \PHP_VERSION_ID < 80000 ? 'Class \'oof\' not found' : 'Class "oof" not found'],
             ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::staticsAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable: Expected method "staticsAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest", did you mean "staticAction"?'],
             ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::privateAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable: Method "privateAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
             ['Symfony\Component\HttpKernel\Tests\Controller\ControllerTest::protectedAction', \InvalidArgumentException::class, 'The controller for URI "/" is not callable: Method "protectedAction" on class "Symfony\Component\HttpKernel\Tests\Controller\ControllerTest" should be public and non-abstract'],
diff --git a/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransport.php b/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransport.php
index afa522ae97..adfcb55eaa 100644
--- a/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransport.php
+++ b/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransport.php
@@ -166,7 +166,11 @@ class EsmtpTransport extends SmtpTransport
 
                 return;
             } catch (TransportExceptionInterface $e) {
-                $this->executeCommand("RSET\r\n", [250]);
+                try {
+                    $this->executeCommand("RSET\r\n", [250]);
+                } catch (TransportExceptionInterface $_) {
+                    // ignore this exception as it probably means that the server error was final
+                }
 
                 // keep the error message, but tries the other authenticators
                 $errors[$authenticator->getAuthKeyword()] = $e;
diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index 10fa472882..8c207cffc9 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -130,18 +130,6 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
      */
     public function getTypes(string $class, string $property, array $context = []): ?array
     {
-        if (\PHP_VERSION_ID >= 70400) {
-            try {
-                $reflectionProperty = new \ReflectionProperty($class, $property);
-                $type = $reflectionProperty->getType();
-                if (null !== $type) {
-                    return $this->extractFromReflectionType($type, $reflectionProperty->getDeclaringClass());
-                }
-            } catch (\ReflectionException $e) {
-                // noop
-            }
-        }
-
         if ($fromMutator = $this->extractFromMutator($class, $property)) {
             return $fromMutator;
         }
@@ -161,6 +149,18 @@ class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTyp
             return $fromDefaultValue;
         }
 
+        if (\PHP_VERSION_ID >= 70400) {
+            try {
+                $reflectionProperty = new \ReflectionProperty($class, $property);
+                $type = $reflectionProperty->getType();
+                if (null !== $type) {
+                    return $this->extractFromReflectionType($type, $reflectionProperty->getDeclaringClass());
+                }
+            } catch (\ReflectionException $e) {
+                // noop
+            }
+        }
+
         return null;
     }
 
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
index 353a41b829..a2d2db5b80 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
@@ -414,6 +414,7 @@ class ReflectionExtractorTest extends TestCase
     {
         $this->assertEquals([new Type(Type::BUILTIN_TYPE_OBJECT, false, Dummy::class)], $this->extractor->getTypes(Php74Dummy::class, 'dummy'));
         $this->assertEquals([new Type(Type::BUILTIN_TYPE_BOOL, true)], $this->extractor->getTypes(Php74Dummy::class, 'nullableBoolProp'));
+        $this->assertEquals([new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_STRING))], $this->extractor->getTypes(Php74Dummy::class, 'stringCollection'));
     }
 
     /**
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php
index 9d3146442d..ffc4f4cd37 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/Php74Dummy.php
@@ -18,4 +18,14 @@ class Php74Dummy
 {
     public Dummy $dummy;
     private ?bool $nullableBoolProp;
+    /** @var string[] */
+    private array $stringCollection;
+
+    public function addStringCollection(string $string): void
+    {
+    }
+
+    public function removeStringCollection(string $string): void
+    {
+    }
 }
diff --git a/src/Symfony/Component/Yaml/Parser.php b/src/Symfony/Component/Yaml/Parser.php
index 01660e88f7..ff6ffa3100 100644
--- a/src/Symfony/Component/Yaml/Parser.php
+++ b/src/Symfony/Component/Yaml/Parser.php
@@ -1253,7 +1253,13 @@ class Parser
             for ($i = 1; isset($this->currentLine[$i]) && ']' !== $this->currentLine[$i]; ++$i) {
             }
 
-            $value .= trim($this->currentLine);
+            $trimmedValue = trim($this->currentLine);
+
+            if ('' !== $trimmedValue && '#' === $trimmedValue[0]) {
+                continue;
+            }
+
+            $value .= $trimmedValue;
 
             if (isset($this->currentLine[$i]) && ']' === $this->currentLine[$i]) {
                 break;
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index 664acdb8b5..4dfc5b58ce 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -1897,6 +1897,30 @@ YAML
                 [new TaggedValue('foo', 'bar')],
                 '[ !foo bar ]',
             ],
+            'with-comments' => [
+                [
+                    [new TaggedValue('foo', ['foo', 'baz'])],
+                ],
+                <<<YAML
+- [!foo [
+    foo,
+    baz
+    #bar
+  ]]
+YAML
+            ],
+            'with-comments-trailing-comma' => [
+                [
+                    [new TaggedValue('foo', ['foo', 'baz'])],
+                ],
+                <<<YAML
+- [!foo [
+    foo,
+    baz,
+    #bar
+  ]]
+YAML
+            ],
         ];
     }