1--TEST--
2Overwriting a typed property reference
3--FILE--
4<?php
5
6class Test {
7    public ?object $prop;
8}
9$s = <<<'STR'
10O:4:"Test":2:{s:4:"prop";R:1;s:4:"prop";N;}
11STR;
12var_dump(unserialize($s));
13
14?>
15--EXPECT--
16object(Test)#1 (1) {
17  ["prop"]=>
18  NULL
19}
20