From 5c08b5b215a9795e1c8837da7576ea0569e34caa Mon Sep 17 00:00:00 2001
From: Giulio De Donato <liuggio@gmail.com>
Date: Tue, 12 Jun 2012 17:56:47 +0200
Subject: [PATCH] fixed #790

---
 src/Composer/Autoload/AutoloadGenerator.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Autoload/AutoloadGenerator.php b/src/Composer/Autoload/AutoloadGenerator.php
index 97d3e496f..d3ed8f337 100644
--- a/src/Composer/Autoload/AutoloadGenerator.php
+++ b/src/Composer/Autoload/AutoloadGenerator.php
@@ -233,7 +233,7 @@ EOF;
         foreach ($packageMap as $item) {
             list($package, $installPath) = $item;
 
-            if (null !== $package->getTargetDir()) {
+            if (null !== $package->getTargetDir() && strlen($package->getTargetDir()) > 0) {
                 $installPath = substr($installPath, 0, -strlen('/'.$package->getTargetDir()));
             }