- Patch #988878 by Shyamala, Dave Reid: system_tokens() references a not initialized variable.

modules/system/system.tokens.inc

@@ -130,10 +130,13 @@ function system_token_info() {
  */
 function system_tokens($type, $tokens, array $data = array(), array $options = array()) {
   $url_options = array('absolute' => TRUE);
-  if (isset($language)) {
-    $url_options['language'] = $language;
+  if (isset($options['language'])) {
+    $url_options['language'] = $options['language'];
+    $language_code = $options['language']->language;
+  }
+  else {
+    $language_code = NULL;
   }
-  $langcode = (isset($language) ? $language->language : NULL);
   $sanitize = !empty($options['sanitize']);
 
   $replacements = array();
@@ -181,19 +184,19 @@ function system_tokens($type, $tokens, array $data = array(), array $options = a
     foreach ($tokens as $name => $original) {
       switch ($name) {
         case 'short':
-          $replacements[$original] = format_date($date, 'short', '', NULL, $langcode);
+          $replacements[$original] = format_date($date, 'short', '', NULL, $language_code);
           break;
 
         case 'medium':
-          $replacements[$original] = format_date($date, 'medium', '', NULL, $langcode);
+          $replacements[$original] = format_date($date, 'medium', '', NULL, $language_code);
           break;
 
         case 'long':
-          $replacements[$original] = format_date($date, 'long', '', NULL, $langcode);
+          $replacements[$original] = format_date($date, 'long', '', NULL, $language_code);
           break;
 
         case 'since':
-          $replacements[$original] = format_interval((REQUEST_TIME - $date), 2, $langcode);
+          $replacements[$original] = format_interval((REQUEST_TIME - $date), 2, $language_code);
           break;
 
         case 'raw':
@@ -204,7 +207,7 @@ function system_tokens($type, $tokens, array $data = array(), array $options = a
 
     if ($created_tokens = token_find_with_prefix($tokens, 'custom')) {
       foreach ($created_tokens as $name => $original) {
-        $replacements[$original] = format_date($date, 'custom', $name, NULL, $langcode);
+        $replacements[$original] = format_date($date, 'custom', $name, NULL, $language_code);
       }
     }
   }
@@ -242,7 +245,7 @@ function system_tokens($type, $tokens, array $data = array(), array $options = a
 
         // These tokens are default variations on the chained tokens handled below.
         case 'timestamp':
-          $replacements[$original] = format_date($file->timestamp, 'medium', '', NULL, $langcode);
+          $replacements[$original] = format_date($file->timestamp, 'medium', '', NULL, $language_code);
           break;
 
         case 'owner':