RE: [PHP-DEV] PCRE JIT stack size limit
| From: | Anatol Belski | Date: | Wed, 16 Mar 2016 20:38:39 +0000 |
| Subject: | RE: [PHP-DEV] PCRE JIT stack size limit | ||
| References: | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-91713@lists.php.net to get a copy of this message | ||
Hi,
> -----Original Message-----
> From: David Zuelke [mailto:dz@heroku.com]
> Sent: Tuesday, March 15, 2016 11:58 PM
> To: Anatol Belski <anatol.php@belski.net>
> Cc: Christoph Becker <cmbecker69@gmx.de>; Pierre Joye
> <pierre.php@gmail.com>; PHP internals <internals@lists.php.net>
> Subject: Re: [PHP-DEV] PCRE JIT stack size limit
>
> Sure. So composer creates patterns to parse a file dynamically; I have not
> figured out why it only happens for some composer.json files (or maybe it
> happens for all of them and I just have not noticed), but this example here I
> extracted from a reproducibly failing "composer require" run; it runs into the JIT
> stack size limit on PHP 7 while it works fine on 5.x:
>
> https://gist.github.com/dzuelke/cc64a630c14416eda3e9
>
I've just tried this on Debian Jessie and on Windows with the latest 7.0.x builds, in both
cases the error is PREG_BACKTRACK_LIMIT_ERROR. I'd be next asking you to check the
configuration. Runtime like system or ini, or build config can affect this. Anyway, I don't see
an issue with PCRE JIT at the moment.
Thanks.
anatol