symfony
diff --git a/‎src/Symfony/Component/Finder/Finder.php‎
Lines changed: 13 additions & 2 deletions b/‎src/Symfony/Component/Finder/Finder.php‎
Lines changed: 13 additions & 2 deletions
@@ -629,9 +629,9 @@ public function in($dirs)
 
         foreach ((array) $dirs as $dir) {
             if (is_dir($dir)) {
-                $resolvedDirs[] = rtrim($dir, '/\\');
+                $resolvedDirs[] = $this->normalizeDir($dir);
             } elseif ($glob = glob($dir, (defined('GLOB_BRACE') ? GLOB_BRACE : 0) | GLOB_ONLYDIR)) {
-                $resolvedDirs = array_merge($resolvedDirs, array_map(function ($path) {return rtrim($path, '/\\'); }, $glob));
+                $resolvedDirs = array_merge($resolvedDirs, array_map(function ($dir) {return $this->normalizeDir($dir); }, $glob));
             } else {
                 throw new \InvalidArgumentException(sprintf('The "%s" directory does not exist.', $dir));
             }
@@ -794,4 +794,15 @@ private function resetAdapterSelection()
             return $properties;
         }, $this->adapters);
     }
+
+    /**
+     * Normalizes given directory names by removing trailing slashes
+     *
+     * @param string $dir
+     * @return string
+     */
+    private function normalizeDir($dir)
+    {
+        return rtrim($dir, '/'.\DIRECTORY_SEPARATOR);
+    }
 }