Ticket #17375: 17375.patch

wp-includes/functions.php

@@ -265 +265 @@
                         if ( '"' !== $data[$length-2] )
                                 return false;
                 case 'a' :
+                case 'C' :
                 case 'O' :
                         return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data );
                 case 'b' :