From 0f151738eae5348380495771fb390e0c2577ee34 Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aaron@users.mediawiki.org>
Date: Tue, 7 Feb 2012 00:20:27 +0000
Subject: [PATCH] r80240: throw an exception if an empty message key array is
 given

---
 includes/Message.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/includes/Message.php b/includes/Message.php
index d9ee14f3db..3c5d5d7d65 100644
--- a/includes/Message.php
+++ b/includes/Message.php
@@ -570,7 +570,10 @@ class Message {
 	protected function fetchMessage() {
 		if ( !isset( $this->message ) ) {
 			$cache = MessageCache::singleton();
-			if ( is_array($this->key) ) {
+			if ( is_array( $this->key ) ) {
+				if ( !count( $this->key ) ) {
+					throw new MWException( "Given empty message key array." );
+				}
 				foreach ( $this->key as $key ) {
 					$message = $cache->get( $key, $this->useDatabase, $this->language );
 					if ( $message !== false && $message !== '' ) {
-- 
2.20.1