Ticket #39880: 39880.patch

canonical.php

@@ -441 +441 @@
 
         // Ignore differences in host capitalization, as this can lead to infinite redirects
         // Only redirect no-www <=> yes-www
-        if ( strtolower($original['host']) == strtolower($redirect['host']) ||
+        if ( isset( $original['host'] ) && isset( $redirect['host'] ) && strtolower($original['host']) == strtolower($redirect['host']) ||
                 ( strtolower($original['host']) != 'www.' . strtolower($redirect['host']) && 'www.' . strtolower($original['host']) != strtolower($redirect['host']) ) )
                 $redirect['host'] = $original['host'];
 
-        $compare_original = array( $original['host'], $original['path'] );
+        if ( isset( $original['host'] ) )
+                $compare_original = array( $original['host'], $original['path'] );
 
         if ( !empty( $original['port'] ) )
                 $compare_original[] = $original['port'];