symfony
diff --git a/‎src/Symfony/Component/Workflow/EventListener/GuardListener.php‎
Lines changed: 6 additions & 0 deletions b/‎src/Symfony/Component/Workflow/EventListener/GuardListener.php‎
Lines changed: 6 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php‎
Lines changed: 14 additions & 0 deletions b/‎src/Symfony/Component/Workflow/Tests/EventListener/GuardListenerTest.php‎
Lines changed: 14 additions & 0 deletions
@@ -12,6 +12,7 @@
 namespace Symfony\Component\Workflow\EventListener;
 
 use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolverInterface;
+use Symfony\Component\Security\Core\Authentication\Token\AnonymousToken;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
 use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
 use Symfony\Component\Security\Core\Role\RoleHierarchyInterface;
@@ -55,6 +56,11 @@ private function getVariables(GuardEvent $event)
     {
         $token = $this->tokenStorage->getToken();
 
+        if($token == null) {
+            $token = new AnonymousToken('secret','anon',[]);
+            $this->tokenStorage->setToken($token);
+        }
+
         if (null !== $this->roleHierarchy) {
             $roles = $this->roleHierarchy->getReachableRoles($token->getRoles());
         } else {
 
@@ -69,6 +69,20 @@ public function testWithSupportedEventAndAccept()
         $this->assertTrue($event->isBlocked());
     }
 
+    public function testWithNoTokenStorage()
+    {
+        $event = $this->createEvent();
+        $this->tokenStorage = null;
+
+        $this->listener->onTransition($event, 'event_name_a');
+
+        $this->assertFalse($event->isBlocked());
+
+        $this->listener->onTransition($event, 'event_name_b');
+
+        $this->assertTrue($event->isBlocked());
+    }
+
     private function createEvent()
     {
         $subject = new \stdClass();