From a48159b2838bcbd429ee57e31b848e5db26239a1 Mon Sep 17 00:00:00 2001
From: Niels Keurentjes <niels.keurentjes@omines.com>
Date: Tue, 26 Jan 2016 23:39:39 +0100
Subject: [PATCH] Bail out if root package attempts to include itself.

---
 src/Composer/Package/Loader/RootPackageLoader.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Composer/Package/Loader/RootPackageLoader.php b/src/Composer/Package/Loader/RootPackageLoader.php
index 0fc7c49af..6f8d45f31 100644
--- a/src/Composer/Package/Loader/RootPackageLoader.php
+++ b/src/Composer/Package/Loader/RootPackageLoader.php
@@ -113,6 +113,9 @@ class RootPackageLoader extends ArrayLoader
             }
         }
 
+        if (isset($links[$config['name']]))
+            throw new \InvalidArgumentException(sprintf('Root package \'%s\' cannot require itself in its composer.json', $config['name']));
+
         $realPackage->setAliases($aliases);
         $realPackage->setStabilityFlags($stabilityFlags);
         $realPackage->setReferences($references);