Prevent fatal error when {{#translation:}} is placed on subpage named code

Bug: T198518
Change-Id: Ia202e78adc53a54f95597b8701304c7f3832bf9c

diff --git a/languages/Language.php b/languages/Language.php
index 1623c36..28469ef 100644 (file)
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -220,7 +220,8 @@ class Language {
 
                // Check if there is a language class for the code
                $class = self::classFromCode( $code, $fallback );
-               if ( class_exists( $class ) ) {
+               // LanguageCode does not inherit Language
+               if ( class_exists( $class ) && is_a( $class, 'Language', true ) ) {
                        $lang = new $class;
                        return $lang;
                }