From 4ae1ef34c199b269db9aec94a569df0ffb111d42 Mon Sep 17 00:00:00 2001
From: Robin Pepermans <robin@users.mediawiki.org>
Date: Wed, 7 Sep 2011 04:05:37 +0000
Subject: [PATCH] Per r90858 CR, throw MW exception on missing title context

---
 includes/parser/Parser.php | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index 2e8a07dc73..02cef7d026 100644
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -690,14 +690,16 @@ class Parser {
 	 * @return Language
 	 */
 	function getFunctionLang() {
-		global $wgLang;
-
 		$target = $this->mOptions->getTargetLanguage();
 		if ( $target !== null ) {
 			return $target;
-		} else {
-			return $this->mOptions->getInterfaceMessage() ? $wgLang : $this->mTitle->getPageLanguage();
+		} elseif( $this->mOptions->getInterfaceMessage() ) {
+			global $wgLang;
+			return $wgLang;
+		} elseif( is_null( $this->mTitle ) ) {
+			throw new MWException( __METHOD__.': $this->mTitle is null' );
 		}
+		return $this->mTitle->getPageLanguage();
 	}
 
 	/**
-- 
2.20.1