1--TEST--
2Cloning uninitialized NumberFormatter
3--EXTENSIONS--
4intl
5--FILE--
6<?php
7
8class A extends NumberFormatter {
9    function __construct() {}
10}
11
12$a = new A;
13try {
14    $b = clone $a;
15    var_dump($b);
16} catch (Throwable $e) {
17    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
18}
19?>
20--EXPECT--
21Error: Cannot clone uninitialized NumberFormatter
22