diff --git a/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php b/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php
index 2ad16dcd4d..d3d25c17b2 100644
--- a/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php
+++ b/src/Symfony/Bridge/Doctrine/Test/DoctrineTestHelper.php
@@ -12,7 +12,6 @@
 namespace Symfony\Bridge\Doctrine\Test;
 
 use Doctrine\Common\Annotations\AnnotationReader;
-use Doctrine\Common\Cache\ArrayCache;
 use Doctrine\ORM\Configuration;
 use Doctrine\ORM\EntityManager;
 use Doctrine\ORM\Mapping\Driver\AnnotationDriver;
@@ -62,8 +61,6 @@ class DoctrineTestHelper
         $config->setProxyDir(sys_get_temp_dir());
         $config->setProxyNamespace('SymfonyTests\Doctrine');
         $config->setMetadataDriverImpl(new AnnotationDriver(new AnnotationReader()));
-        $config->setQueryCacheImpl(new ArrayCache());
-        $config->setMetadataCacheImpl(new ArrayCache());
 
         return $config;
     }
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 53927c4a82..ac69dfd525 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -1443,8 +1443,8 @@ class FrameworkExtension extends Extension
                 }
 
                 $container
-                    ->getDefinition('annotations.filesystem_cache')
-                    ->replaceArgument(0, $cacheDir)
+                    ->getDefinition('annotations.filesystem_cache_adapter')
+                    ->replaceArgument(2, $cacheDir)
                 ;
 
                 $cacheService = 'annotations.filesystem_cache';
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.php
index 6a230c8340..187d9da664 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/annotations.php
@@ -15,9 +15,9 @@ use Doctrine\Common\Annotations\AnnotationReader;
 use Doctrine\Common\Annotations\AnnotationRegistry;
 use Doctrine\Common\Annotations\CachedReader;
 use Doctrine\Common\Annotations\Reader;
-use Doctrine\Common\Cache\ArrayCache;
-use Doctrine\Common\Cache\FilesystemCache;
 use Symfony\Bundle\FrameworkBundle\CacheWarmer\AnnotationsCacheWarmer;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
 use Symfony\Component\Cache\Adapter\PhpArrayAdapter;
 use Symfony\Component\Cache\DoctrineProvider;
 
@@ -35,15 +35,24 @@ return static function (ContainerConfigurator $container) {
         ->set('annotations.cached_reader', CachedReader::class)
             ->args([
                 service('annotations.reader'),
-                inline_service(ArrayCache::class),
+                inline_service(DoctrineProvider::class)->args([
+                    inline_service(ArrayAdapter::class)
+                ]),
                 abstract_arg('Debug-Flag'),
             ])
 
-        ->set('annotations.filesystem_cache', FilesystemCache::class)
+        ->set('annotations.filesystem_cache_adapter', FilesystemAdapter::class)
             ->args([
+                '',
+                0,
                 abstract_arg('Cache-Directory'),
             ])
 
+        ->set('annotations.filesystem_cache', DoctrineProvider::class)
+            ->args([
+                service('annotations.filesystem_cache_adapter'),
+            ])
+
         ->set('annotations.cache_warmer', AnnotationsCacheWarmer::class)
             ->args([
                 service('annotations.reader'),
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index f816acee64..960eda35d0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -928,7 +928,7 @@ abstract class FrameworkExtensionTest extends TestCase
         $container->addCompilerPass(new TestAnnotationsPass());
         $container->compile();
 
-        $this->assertEquals($container->getParameter('kernel.cache_dir').'/annotations', $container->getDefinition('annotations.filesystem_cache')->getArgument(0));
+        $this->assertEquals($container->getParameter('kernel.cache_dir').'/annotations', $container->getDefinition('annotations.filesystem_cache_adapter')->getArgument(2));
         $this->assertSame('annotations.filesystem_cache', (string) $container->getDefinition('annotation_reader')->getArgument(1));
     }
 
diff --git a/src/Symfony/Component/Intl/Locale.php b/src/Symfony/Component/Intl/Locale.php
index 8cc457b27b..94ac8da631 100644
--- a/src/Symfony/Component/Intl/Locale.php
+++ b/src/Symfony/Component/Intl/Locale.php
@@ -66,7 +66,8 @@ final class Locale extends \Locale
     public static function getFallback(string $locale): ?string
     {
         if (\function_exists('locale_parse')) {
-            $localeSubTags = locale_parse($locale);
+            $localeSubTags = locale_parse($locale) ?? ['language' => $locale];
+
             if (1 === \count($localeSubTags)) {
                 if ('root' !== self::$defaultFallback && self::$defaultFallback === $localeSubTags['language']) {
                     return 'root';
diff --git a/src/Symfony/Component/Intl/Tests/LocaleTest.php b/src/Symfony/Component/Intl/Tests/LocaleTest.php
index fd998612a7..fce214242a 100644
--- a/src/Symfony/Component/Intl/Tests/LocaleTest.php
+++ b/src/Symfony/Component/Intl/Tests/LocaleTest.php
@@ -70,4 +70,16 @@ class LocaleTest extends TestCase
 
         Locale::setDefaultFallback($prev);
     }
+
+    /**
+     * @requires function locale_parse
+     */
+    public function testLongLocaleFallback()
+    {
+        $locale = 'LC_TYPE=fr_FR.UTF-8;LC_NUMERIC=C;LC_TIME=fr_FR.UTF-8;LC_COLLATE=fr_FR.UTF-8;'.
+            'LC_MONETARY=fr_FR.UTF-8;LC_MESSAGES=fr_FR.UTF-8;LC_PAPER=fr_FR.UTF-8;LC_NAME=fr_FR.UTF-8;'.
+            'LC_ADDRESS=fr_FR.UTF-8;LC_TELEPHONE=fr_FR.UTF-8;LC_MEASUREMENT=fr_FR.UTF-8;LC_IDENTIFICATION=fr_FR.UTF-8';
+
+        $this->assertNull(Locale::getFallback($locale));
+    }
 }
diff --git a/src/Symfony/Component/Validator/ValidatorBuilder.php b/src/Symfony/Component/Validator/ValidatorBuilder.php
index 59698f327c..336c4f7be2 100644
--- a/src/Symfony/Component/Validator/ValidatorBuilder.php
+++ b/src/Symfony/Component/Validator/ValidatorBuilder.php
@@ -16,6 +16,8 @@ use Doctrine\Common\Annotations\CachedReader;
 use Doctrine\Common\Annotations\Reader;
 use Doctrine\Common\Cache\ArrayCache;
 use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\Cache\Adapter\ArrayAdapter;
+use Symfony\Component\Cache\DoctrineProvider;
 use Symfony\Component\Validator\Context\ExecutionContextFactory;
 use Symfony\Component\Validator\Exception\ValidatorException;
 use Symfony\Component\Validator\Mapping\Factory\LazyLoadingMetadataFactory;
@@ -266,7 +268,11 @@ class ValidatorBuilder
      */
     public function addDefaultDoctrineAnnotationReader(): self
     {
-        $this->annotationReader = new CachedReader(new AnnotationReader(), new ArrayCache());
+        if (class_exists(ArrayAdapter::class)) {
+            $this->annotationReader = new CachedReader(new AnnotationReader(), new DoctrineProvider(new ArrayAdapter()));
+        } else {
+            $this->annotationReader = new CachedReader(new AnnotationReader(), new ArrayCache());
+        }
 
         return $this;
     }