Merge branch '4.4' into 5.2

* 4.4:
  Stop using deprecated ArrayCache from Doctrine
  [Intl] fix Locale::getFallback() throwing exception on long $locale

Author: nicolas-grekas

ValidatorBuilder.php

@@ -16,6 +16,8 @@
 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 @@ public function setDoctrineAnnotationReader(?Reader $reader): self
      */
     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;
     }