From a4324447f10a1950463211bd52c6ee8d15d06dc6 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Sun, 27 Sep 2020 15:03:19 +0200
Subject: [PATCH] [Filesystem] fix for PHP 8

---
 src/Symfony/Component/Filesystem/Filesystem.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Symfony/Component/Filesystem/Filesystem.php b/src/Symfony/Component/Filesystem/Filesystem.php
index 0dda9f28af..a6e8715256 100644
--- a/src/Symfony/Component/Filesystem/Filesystem.php
+++ b/src/Symfony/Component/Filesystem/Filesystem.php
@@ -599,13 +599,13 @@ class Filesystem
      */
     public function isAbsolutePath($file)
     {
-        return strspn($file, '/\\', 0, 1)
+        return '' !== (string) $file && (strspn($file, '/\\', 0, 1)
             || (\strlen($file) > 3 && ctype_alpha($file[0])
                 && ':' === $file[1]
                 && strspn($file, '/\\', 2, 1)
             )
             || null !== parse_url($file, \PHP_URL_SCHEME)
-        ;
+        );
     }
 
     /**