From 4fdf0b226c6bad699b3c505cbcd52b603287e90d Mon Sep 17 00:00:00 2001
From: Andrew Nicols <andrew@nicols.co.uk>
Date: Wed, 20 Jul 2016 12:06:19 +0800
Subject: [PATCH] MDL-55283 javascript: Check dir is readable before traversing
 them

---
 lib/classes/requirejs.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/classes/requirejs.php b/lib/classes/requirejs.php
index 9894dc5c987..3b2a02a17f7 100644
--- a/lib/classes/requirejs.php
+++ b/lib/classes/requirejs.php
@@ -108,6 +108,11 @@ class core_requirejs {
             if ($debug) {
                 $srcdir = $dir . '/src';
             }
+            if (!is_dir($srcdir) || !is_readable($srcdir)) {
+                // This is probably an empty amd directory without src or build.
+                // Skip it - RecursiveDirectoryIterator fatals if the directory is not readable as an iterator.
+                continue;
+            }
             $items = new RecursiveDirectoryIterator($srcdir);
             foreach ($items as $item) {
                 $extension = $item->getExtension();