From f1f1494bbf4c742e27e86fb7b4154f8377cf8b3d Mon Sep 17 00:00:00 2001
From: Christophe Coevoet <stof@notk.org>
Date: Mon, 2 Apr 2012 19:53:22 +0200
Subject: [PATCH] Added an exception when passing an invalid object to
 ApcClassLoader

---
 src/Symfony/Component/ClassLoader/ApcClassLoader.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Symfony/Component/ClassLoader/ApcClassLoader.php b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
index 523e9a87e5..bf70bfc958 100644
--- a/src/Symfony/Component/ClassLoader/ApcClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/ApcClassLoader.php
@@ -58,6 +58,10 @@ class ApcClassLoader
             throw new \RuntimeException('Unable to use ApcUniversalClassLoader as APC is not enabled.');
         }
 
+        if (!method_exists($classFinder, 'findFile')) {
+            throw new \InvalidArgumentException('The class finder must implement a "findFile" method.');
+        }
+
         $this->prefix = $prefix;
         $this->classFinder = $classFinder;
     }