From c502601c4bd05487a11454677acfa3b7a0ae9e85 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Sun, 28 Feb 2016 14:06:36 +0000
Subject: [PATCH] Retry on RecursiveDirectoryIterator failure to open dir, refs
 #4009

---
 src/Composer/Util/Filesystem.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Util/Filesystem.php b/src/Composer/Util/Filesystem.php
index 463fac1e7..041be9e3b 100644
--- a/src/Composer/Util/Filesystem.php
+++ b/src/Composer/Util/Filesystem.php
@@ -145,7 +145,15 @@ class Filesystem
      */
     public function removeDirectoryPhp($directory)
     {
-        $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
+        try {
+            $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
+        } catch (\UnexpectedValueException $e) {
+            // re-try once after clearing the stat cache if it failed as it
+            // sometimes fails without apparent reason, see https://github.com/composer/composer/issues/4009
+            clearstatcache();
+            usleep(100000);
+            $it = new RecursiveDirectoryIterator($directory, RecursiveDirectoryIterator::SKIP_DOTS);
+        }
         $ri = new RecursiveIteratorIterator($it, RecursiveIteratorIterator::CHILD_FIRST);
 
         foreach ($ri as $file) {