Bug #78420 [Opn]: preg_match failed with Unicode character scripts

Edit report at https://bugs.php.net/bug.php?id=78420&edit=1 ID: 78420 Updated by: cmb@php.net Reported by: noskov dot vlad at gmail dot com Summary: preg_match failed with Unicode character scripts Status: Open Type: Bug Package: PCRE related PHP Version: 7.4.0beta2 Block user comment: N Private report: N New Comment: The regression has been introduced by updating to PCRE2 10.33[1], so apparently is an upstream issue, which might have been resolved already. [1] <http://git.php.net/?p=php-src.git;a=commit;h=aa9433e9286801a6af6d4cee73d9a165a61e0e3b> Previous Comments: ------------------------------------------------------------------------ [2019-08-16 10:06:15] daverandom@php.net https://3v4l.org/4D17e ------------------------------------------------------------------------ [2019-08-16 10:04:46] daverandom@php.net The problem is more subtle than this, as the following all work: var_dump(preg_match('~[\pL\p{Cyrillic}]~u', 'testЛ')); var_dump(preg_match('~[\pL]~u', 'testЛ')); var_dump(preg_match('~[\p{Cyrillic}]~u', 'testЛ')); var_dump(preg_match('~[\pL]~u', 'test')); var_dump(preg_match('~[\p{Cyrillic}]~u', 'Л')); var_dump(preg_match('~\pL~u', 'Л')); var_dump(preg_match('~\p{Cyrillic}~u', 'testЛ')); var_dump(preg_match('~\pL\p{Cyrillic}~u', 'testЛ')); ------------------------------------------------------------------------ [2019-08-16 10:04:29] requinix@php.net Works with JIT disabled. ------------------------------------------------------------------------ [2019-08-16 09:51:03] noskov dot vlad at gmail dot com Description: ------------ When running preg_match with Unicode character scripts in regular expression it always return 0. https://3v4l.org/sil9c Test script: --------------- var_dump(preg_match('~[\pL\p{Cyrillic}]~u', 'test')); Expected result: ---------------- int(1) Actual result: -------------- int(0) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78420&edit=1