From b28328b772584aaf8c2ee519eefd82e9e9472649 Mon Sep 17 00:00:00 2001
From: Alex Pott <alex.a.pott@googlemail.com>
Date: Thu, 27 Feb 2020 13:05:31 +0000
Subject: [PATCH] Issue #3020296 followup by mondrake: Remove Symfony's
 classloader as it does not exist in Symfony 4

---
 core/lib/Drupal/Core/DrupalKernel.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index 68e166ce3121..414357fecffa 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -473,7 +473,7 @@ public function boot() {
     if (Settings::get('class_loader_auto_detect', TRUE) && method_exists($this->classLoader, 'setApcuPrefix')) {
       // Vary the APCu key by which modules are installed to allow
       // class_exists() checks to determine functionality.
-      $id = 'class_loader:' . crc32(implode(array_keys($this->container->getParameter('container.modules')), ':'));
+      $id = 'class_loader:' . crc32(implode(':', array_keys($this->container->getParameter('container.modules'))));
       $prefix = Settings::getApcuPrefix($id, $this->root);
       $this->classLoader->setApcuPrefix($prefix);
     }
-- 
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