From 3251f9f1aa997479fff78905841e22beacfbe37b Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Wed, 16 Apr 2014 10:23:45 +0200
Subject: [PATCH] Only check phar validity if phar.readonly is false

---
 src/Composer/Command/SelfUpdateCommand.php | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/Composer/Command/SelfUpdateCommand.php b/src/Composer/Command/SelfUpdateCommand.php
index a55b9b372..8ce355d9c 100644
--- a/src/Composer/Command/SelfUpdateCommand.php
+++ b/src/Composer/Command/SelfUpdateCommand.php
@@ -174,17 +174,18 @@ EOT
     {
         try {
             @chmod($newFilename, 0777 & ~umask());
-            // test the phar validity
-            $phar = new \Phar($newFilename);
-            // free the variable to unlock the file
-            unset($phar);
+            if (!ini_get('phar.readonly')) {
+                // test the phar validity
+                $phar = new \Phar($newFilename);
+                // free the variable to unlock the file
+                unset($phar);
+            }
 
             // copy current file into installations dir
             if ($backupTarget && file_exists($localFilename)) {
                 @copy($localFilename, $backupTarget);
             }
 
-            unset($phar);
             rename($newFilename, $localFilename);
         } catch (\Exception $e) {
             if ($backupTarget) {