1--TEST-- 2GH-15907: Failed assertion when promoting inheritance error to exception 3--FILE-- 4<?php 5 6set_error_handler(function($errno, $msg) { 7 throw new Exception($msg); 8}); 9 10class C implements Serializable { 11 public function serialize() {} 12 public function unserialize($serialized) {} 13} 14 15?> 16--EXPECTF-- 17Fatal error: During inheritance of C, while implementing Serializable: Uncaught Exception: C implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in %s:%d 18%a 19