diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index d79cf8f..f6ee5f1 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -20,6 +20,8 @@
 use Drupal\Core\Site\Settings;
 use Symfony\Cmf\Component\Routing\RouteObjectInterface;
 use Symfony\Component\ClassLoader\ApcClassLoader;
+use Symfony\Component\ClassLoader\WinCacheClassLoader;
+use Symfony\Component\ClassLoader\XcacheClassLoader;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 use Symfony\Component\HttpFoundation\RedirectResponse;
@@ -46,21 +48,6 @@
 class DrupalKernel implements DrupalKernelInterface, TerminableInterface {
 
   /**
-   * Platform specific optimized class loaders.
-   *
-   * Autodetection tries to initialize these in the
-   * order they appear in the array. They are ordered
-   * in terms of "adoption/usage".
-   *
-   * @var string[]
-   */
-  protected $classLoaders = [
-    \Symfony\Component\ClassLoader\ApcClassLoader::class,
-    \Symfony\Component\ClassLoader\WinCacheClassLoader::class,
-    \Symfony\Component\ClassLoader\XcacheClassLoader::class,
-  ];
-
-  /**
    * Holds the class used for dumping the container to a PHP array.
    *
    * In combination with swapping the container class this is useful to e.g.
@@ -1022,16 +1009,17 @@ protected function initializeSettings(Request $request) {
         && Settings::get('class_loader_auto_detect', TRUE)) {
       $prefix = Settings::getApcuPrefix('class_loader', $this->root);
       $loader = NULL;
-      // Each one of these optimized loaders will verify that
-      // the required storage backends are available upon
-      // being instantiated and will throw an exception
-      // if not.
-      foreach ($this->classLoaders as $loader_class) {
-        try {
-          $loader = new $loader_class($prefix, $this->classLoader);
-          break;
-        }
-        catch (\Exception $e) {}
+
+      // We autodetect one of the following three optimized classloaders, if
+      // their underlying extension exists.
+      if (function_exists('apcu_fetch')) {
+        $loader = new ApcClassLoader($prefix, $this->classLoader);
+      }
+      elseif (extension_loaded('wincache')) {
+        $loader = new WinCacheClassLoader($prefix, $this->classLoader);
+      }
+      elseif (extension_loaded('xcache')) {
+        $loader = new XcacheClassLoader($prefix, $this->classLoader);
       }
       if (!empty($loader)) {
         $this->classLoader->unregister();