[php-src] Issue #20341: PCRE2 10.45-10.47 contains a known regex character class compilation issue

Issue: https://github.com/php/php-src/issues/20341 Author: ranvis ### Description The current PHP 8.5 builds (RC3) bundle PCRE2 10.46, which contains a known issue in character class handling (https://github.com/PCRE2Project/pcre2/issues/833), This may lead to incorrect (non-)matches in certain patterns containing bracketed character class [...]. Affected PCRE2 versions are 10.45-10.47, dev-master. The following code: https://3v4l.org/iZ91q ```php $patterns = [ '/[\x{ff}\x{100}\x{8000}\x{8002}\x{8004}\x{8006}]/u' => "\u{100}", '/[\x{ff}\x{100}\x{8000}\x{8002}\x{8004}\x{8006}\x{8008}]/u' => "\u{100}", '/[\x{ff}\x{101}\x{8000}\x{8002}\x{8004}\x{8006}\x{8008}]/u' => "\u{101}", ]; foreach ($patterns as $pattern => $str) { if (preg_match($pattern, $str, $m)) { echo "0: ", json_encode($m[0]), "\n"; } else { echo "No match.\n"; } } ``` Resulted in this output: ``` 0: "\u0100" No match. 0: "\u0101" ``` But I expected this output instead: ``` 0: "\u0100" 0: "\u0100" 0: "\u0101" ``` ### PHP Version ```plain PHP 8.5.0RC3 (cli) (built: Oct 21 2025 21:38:34) (NTS Visual C++ 2022 x64) Copyright (c) The PHP Group Zend Engine v4.5.0RC3, Copyright (c) Zend Technologies with Zend OPcache v8.5.0RC3, Copyright (c), by Zend Technologies ``` ### Operating System Windows, but also confirmed on pcre2test -32 on Linux PCRE2 10.47