[php-src] Issue #14930: Custom stream wrapper dir_readdir output truncated to 255 characters in PHP 8.3

Issue: https://github.com/php/php-src/issues/14930 Author: joec4i ### Description The following code: ```php class DummyWrapper { public $context; public const TEST_FILENAME = 'ieNoquiaC6ijeiy9beejaiphoriejo2cheehooGou8uhoh7eh0gefahyuQuohd7eec9auso9eeFah2Maedohsemi1eetoo5fo5biePh5eephai7SiuguipouLeemequ2oope9aigoQu5efak2aLeri9ithaiJ9eew3dianaiHoo1aexaighiitee6geghiequ5nohhiikahwee8ohk2Soip2Aikeithohdeitiedeiku7DiTh2eep3aiyeejair4dau4osai1si9laeZaiquoopomomai5eeMoce0oecietu'; public function dir_opendir() { return true; } public function dir_readdir() { return self::TEST_FILENAME; } } stream_wrapper_register('dummy', 'DummyWrapper'); $dh = opendir('dummy://', stream_context_create()); $file = readdir($dh); var_dump($file); var_dump(DummyWrapper::TEST_FILENAME); ``` Resulted in this output: ``` ➜ /tmp php stream_wrapper.php /private/tmp/stream_wrapper.php:25: string(255) "ieNoquiaC6ijeiy9beejaiphoriejo2cheehooGou8uhoh7eh0gefahyuQuohd7eec9auso9eeFah2Maedohsemi1eetoo5fo5biePh5eephai7SiuguipouLeemequ2oope9aigoQu5efak2aLeri9ithaiJ9eew3dianaiHoo1aexaighiitee6geghiequ5nohhiikahwee8ohk2Soip2Aikeithohdeitiedeiku7DiTh2eep3aiyeejair" /private/tmp/stream_wrapper.php:26: string(300) "ieNoquiaC6ijeiy9beejaiphoriejo2cheehooGou8uhoh7eh0gefahyuQuohd7eec9auso9eeFah2Maedohsemi1eetoo5fo5biePh5eephai7SiuguipouLeemequ2oope9aigoQu5efak2aLeri9ithaiJ9eew3dianaiHoo1aexaighiitee6geghiequ5nohhiikahwee8ohk2Soip2Aikeithohdeitiedeiku7DiTh2eep3aiyeejair4dau4osai1si9laeZaiquoopomomai5eeMoce0oecietu"``` ➜ /tmp php -v PHP 8.3.9 (cli) (built: Jul 2 2024 14:10:14) (NTS) Copyright (c) The PHP Group Zend Engine v4.3.9, Copyright (c) Zend Technologies with Xdebug v3.3.1, Copyright (c) 2002-2023, by Derick Rethans with Zend OPcache v8.3.9, Copyright (c), by Zend Technologies ``` But I expected this output instead: ``` ➜ /tmp /opt/homebrew/Cellar/php@8.2/8.2.21/bin/php stream_wrapper.php /private/tmp/stream_wrapper.php:25: string(300) "ieNoquiaC6ijeiy9beejaiphoriejo2cheehooGou8uhoh7eh0gefahyuQuohd7eec9auso9eeFah2Maedohsemi1eetoo5fo5biePh5eephai7SiuguipouLeemequ2oope9aigoQu5efak2aLeri9ithaiJ9eew3dianaiHoo1aexaighiitee6geghiequ5nohhiikahwee8ohk2Soip2Aikeithohdeitiedeiku7DiTh2eep3aiyeejair4dau4osai1si9laeZaiquoopomomai5eeMoce0oecietu" /private/tmp/stream_wrapper.php:26: string(300) "ieNoquiaC6ijeiy9beejaiphoriejo2cheehooGou8uhoh7eh0gefahyuQuohd7eec9auso9eeFah2Maedohsemi1eetoo5fo5biePh5eephai7SiuguipouLeemequ2oope9aigoQu5efak2aLeri9ithaiJ9eew3dianaiHoo1aexaighiitee6geghiequ5nohhiikahwee8ohk2Soip2Aikeithohdeitiedeiku7DiTh2eep3aiyeejair4dau4osai1si9laeZaiquoopomomai5eeMoce0oecietu" ``` ``` ➜ /tmp /opt/homebrew/Cellar/php@8.2/8.2.21/bin/php -v PHP 8.2.21 (cli) (built: Jul 2 2024 12:51:54) (NTS) Copyright (c) The PHP Group Zend Engine v4.2.21, Copyright (c) Zend Technologies with Xdebug v3.3.1, Copyright (c) 2002-2023, by Derick Rethans with Zend OPcache v8.2.21, Copyright (c), by Zend Technologies ``` ### PHP Version PHP 8.3.9 ### Operating System _No response_