From 5c07276020b7be4abd68c18dbdf4c2bf6df259ce Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Mon, 1 Feb 2010 19:07:07 +0000
Subject: - Patch #700160 by naxoc: drupal_realpath() did not always work as
 expected.

---
 includes/file.inc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'includes')

diff --git a/includes/file.inc b/includes/file.inc
index b03e9d4d9..1b06895af 100644
--- a/includes/file.inc
+++ b/includes/file.inc
@@ -1831,9 +1831,14 @@ function drupal_realpath($uri) {
   if ($wrapper = file_stream_wrapper_get_instance_by_uri($uri)) {
     return $wrapper->realpath();
   }
-  else {
+  // Check that the uri has a value. There is a bug in PHP 5.2 on *BSD systems
+  // that makes realpath not return FALSE as expected when passing an empty
+  // variable.
+  // @todo Remove when Drupal drops support for PHP 5.2.
+  elseif (!empty($uri)) {
     return realpath($uri);
   }
+  return FALSE;
 }
 
 /**
-- 
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