From eaa767bebd889e429746b214af2d82344f4e78e3 Mon Sep 17 00:00:00 2001
From: Thomas Calvet <calvet.thomas@gmail.com>
Date: Thu, 9 Jan 2020 22:18:08 +0100
Subject: [PATCH] [Filesystem][FilesystemCommonTrait] Use a dedicated directory
 when there are no namespace

---
 src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php b/src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php
index d828982b82..15cc950e81 100644
--- a/src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php
+++ b/src/Symfony/Component/Cache/Traits/FilesystemCommonTrait.php
@@ -35,6 +35,8 @@ trait FilesystemCommonTrait
                 throw new InvalidArgumentException(sprintf('Namespace contains "%s" but only characters in [-+_.A-Za-z0-9] are allowed.', $match[0]));
             }
             $directory .= \DIRECTORY_SEPARATOR.$namespace;
+        } else {
+            $directory .= \DIRECTORY_SEPARATOR.'@';
         }
         if (!file_exists($directory)) {
             @mkdir($directory, 0777, true);