Ticket #22077: 22077.diff

wp-includes/query.php

@@ -1463 +1463 @@
                 if ( '' != $qv['subpost_id'] )
                         $qv['attachment_id'] = $qv['subpost_id'];
 
-                $qv['attachment_id'] = absint($qv['attachment_id']);
+                if ( is_numeric($qv['attachment_id']) )
+                        $qv['attachment_id'] = absint($qv['attachment_id']);
 
                 if ( ('' != $qv['attachment']) || !empty($qv['attachment_id']) ) {
                         $this->is_single = true;