[php-src] Issue #12481: PHP crash with JIT enabled

From: Date: Thu, 19 Oct 2023 17:00:36 +0000
Subject: [php-src] Issue #12481: PHP crash with JIT enabled
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-245610@lists.php.net to get a copy of this message
Issue: https://github.com/php/php-src/issues/12481 Author: terax6669 ### Description I'm using google/protobuf v3.24.4. The following code: ```php <?php $codedInputStream->readVarint32($value); ``` Resulted in: PHP process crash with exit code 5 Changing $var &= 0xFFFFFFFF; to $var = $var & 0xFFFFFFFF; as well as removing all the PHP_INT_SIZE conditions resolves the issue. The error doesn't always occur in the same place (it's somewhat random +- a few lines/loops), but can be consistently reproduced. Also it seems to only occur when you do it very fast in a loop enough times. Adding a bunch of debug output slowed down my console to the point where the error did not occur anymore and the process successfully finished. Not sure how else I could help reproduce the issue on your side, I'm not at liberty to share the data I'm processing. ### PHP Version PHP 8.2.11 (cli) (built: Sep 26 2023 15:25:31) (ZTS Visual C++ 2019 x64) ### Operating System Windows 11

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