xref: /PHP-8.3/Zend/tests/gh8548.phpt (revision c0194219)
1--TEST--
2GH-8548: stream_wrapper_unregister() leaks memory
3--FILE--
4<?php
5
6class Wrapper
7{
8    public $context;
9
10    public function stream_open(string $path, string $mode, int $options): bool
11    {
12        return true;
13    }
14
15    public function stream_eof(): bool
16    {
17        return true;
18    }
19}
20
21function test() {
22    if (!stream_wrapper_register('foo', \Wrapper::class)) {
23        throw new \Exception('Could not register stream wrapper');
24    }
25
26    $file = fopen('foo://bar', 'r');
27
28    if (!stream_wrapper_unregister('foo')) {
29        throw new \Exception('Could not unregister stream wrapper');
30    }
31
32    $wrapper = stream_get_meta_data($file)['wrapper_data'];
33    if (!$wrapper instanceof Wrapper) {
34        throw new \Exception('Wrapper is not of expected type');
35    }
36
37    fclose($file);
38    unset($file);
39}
40
41// The first iterations will allocate space for things like the resource list
42for ($i = 0; $i < 10; $i++) {
43    test();
44}
45
46$before = memory_get_usage();
47for ($i = 0; $i < 1000; $i++) {
48    test();
49}
50$after = memory_get_usage();
51
52var_dump($before === $after);
53
54?>
55--EXPECT--
56bool(true)
57