From 27f905edbe3ed6c599cdbd1449e3ce670da749a6 Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Sun, 4 Mar 2018 08:46:32 -0800
Subject: [PATCH] made a small performance improvement

---
 lib/Twig/ExtensionSet.php | 2 ++
 lib/Twig/Template.php     | 6 +-----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/lib/Twig/ExtensionSet.php b/lib/Twig/ExtensionSet.php
index da29912a3..2ade646e6 100644
--- a/lib/Twig/ExtensionSet.php
+++ b/lib/Twig/ExtensionSet.php
@@ -160,6 +160,8 @@ final class Twig_ExtensionSet
             throw new LogicException(sprintf('Unable to register extension "%s" as it is already registered.', $class));
         }
 
+        // For BC/FC with namespaced aliases
+        $class = (new ReflectionClass($class))->name;
         $this->extensions[$class] = $extension;
     }
 
diff --git a/lib/Twig/Template.php b/lib/Twig/Template.php
index becc4d3c5..dc70d784b 100644
--- a/lib/Twig/Template.php
+++ b/lib/Twig/Template.php
@@ -41,11 +41,7 @@ abstract class Twig_Template
     public function __construct(Twig_Environment $env)
     {
         $this->env = $env;
-        foreach ($env->getExtensions() as $extension) {
-            // For BC/FC with namespaced aliases
-            $class = (new ReflectionClass(get_class($extension)))->name;
-            $this->extensions[ltrim($class, '\\')] = $extension;
-        }
+        $this->extensions = $env->getExtensions();
     }
 
     /**