Issue #3278314 by acbramley: InlineBlockUsageInterface::getUsage can return...

Issue #3278314 by acbramley: InlineBlockUsageInterface::getUsage can return FALSE but isn't documented

(cherry picked from commit cf7dac18)

Closes #3032078

core/lib/Drupal/Core/DependencyInjection/Compiler/TwigExtensionPass.php

@@ -9,7 +9,7 @@
 /**
  * Adds the twig_extension_hash parameter to the container.
  *
- * Parameter twig_extension_hash is a hash of all extension mtimes for Twig
+ * Parameter twig_extension_hash is a crc32 hash of all extensions for Twig
  * template invalidation.
  */
 class TwigExtensionPass implements CompilerPassInterface {
@@ -23,8 +23,8 @@ public function process(ContainerBuilder $container) {
       $class_name = $container->getDefinition($service_id)->getClass();
       $reflection = new \ReflectionClass($class_name);
       // We use the class names as hash in order to invalidate on new extensions
-      // and mtime for every time we change an existing file.
-      $twig_extension_hash .= $class_name . filemtime($reflection->getFileName());
+      // and crc32 for every time we change an existing file.
+      $twig_extension_hash .= $class_name . hash_file('crc32', $reflection->getFileName());
     }
 
     $container->setParameter('twig_extension_hash', Crypt::hashBase64($twig_extension_hash));