1--TEST--
2Cannot serialize instance of Directory class constructed via Reflection.
3--FILE--
4<?php
5
6$d = dir(__DIR__);
7try {
8    $s = serialize($d);
9    var_dump($s);
10} catch (\Throwable $e) {
11    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
12}
13
14?>
15--EXPECT--
16Exception: Serialization of 'Directory' is not allowed
17