From 5e6979b52ae0dc71107ce6166748a1d80618c882 Mon Sep 17 00:00:00 2001
From: kenjis <kenji.uui@gmail.com>
Date: Wed, 10 Apr 2024 10:39:44 +0900
Subject: [PATCH] fix: Cannot declare class Shield\Config\Auth, because the
 name is already in use

See https://github.com/codeigniter4/shield/issues/1091
---
 system/Autoloader/FileLocator.php | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/system/Autoloader/FileLocator.php b/system/Autoloader/FileLocator.php
index 97da0fa275eb..14b9a1366ab4 100644
--- a/system/Autoloader/FileLocator.php
+++ b/system/Autoloader/FileLocator.php
@@ -28,6 +28,13 @@ class FileLocator implements FileLocatorInterface
      */
     protected $autoloader;
 
+    /**
+     * List of classnames that did not exist.
+     *
+     * @var list<class-string>
+     */
+    private array $invalidClassnames = [];
+
     public function __construct(Autoloader $autoloader)
     {
         $this->autoloader = $autoloader;
@@ -288,14 +295,20 @@ public function findQualifiedNameFromPath(string $path)
                         ),
                         '\\'
                     );
-
                 // Remove the file extension (.php)
                 $className = mb_substr($className, 0, -4);
 
+                if (in_array($className, $this->invalidClassnames, true)) {
+                    continue;
+                }
+
                 // Check if this exists
                 if (class_exists($className)) {
                     return $className;
                 }
+
+                // If the class does not exist, it is an invalid classname.
+                $this->invalidClassnames[] = $className;
             }
         }