Bug #81215 [Sus]: Possible memory leak with closure nested \array_filter()

Edit report at https://bugs.php.net/bug.php?id=81215&edit=1 ID: 81215 User updated by: berliozdavid at gmail dot com Reported by: berliozdavid at gmail dot com Summary: Possible memory leak with closure nested \array_filter() Status: Suspended Type: Bug Package: Performance problem Operating System: Fedora/Linux PHP Version: 8.0.8 Block user comment: N Private report: N New Comment: cross ref https://github.com/phacility/xhprof/issues/105 Previous Comments: ------------------------------------------------------------------------ [2021-07-02 08:15:19] nikic@php.net I'd suggest reporting the issue to the xhprof extension. Most likely the problem is on their side, and if not they can provide more information on the issue (possibly there is some bad interaction between the observer API and closures? I have no idea what xhprof uses on PHP 8.) ------------------------------------------------------------------------ [2021-07-02 05:47:28] berliozdavid at gmail dot com I've installed both exts with PHP80 and PHP74 php74 -n -dzend_extension=opcache -dopcache.enable=1 -dopcache.enable_cli=1 -dextension=xhprof.so array_filter_short.php --> OK no increase php80 -n -dzend_extension=opcache -dopcache.enable=1 -dopcache.enable_cli=1 -dextension=xhprof.so array_filter_short.php --> KO increase ------------------------------------------------------------------------ [2021-07-02 05:42:10] berliozdavid at gmail dot com On my rig the culprits are opcache + xhprof php -n -dzend_extension=opcache -dopcache.enable=1 -dopcache.enable_cli=1 -dextension=xhprof.so array_filter_short.php ------------------------------------------------------------------------ [2021-07-01 13:42:03] berliozdavid at gmail dot com I can confirm that php -n is not affected. So far I've tested separately php -n -dextension=swoole.so opcache xhprof No memory leak I can test with a set of common modules if you provide me a list. ------------------------------------------------------------------------ [2021-07-01 13:20:37] nikic@php.net Thanks! Some of those (e.g. xhprof, swoole) look potentially problematic in terms of modifying engine behavior. Can you please check whether you still see when using "php -n" (i.e. without ini file)? ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=81215 -- Edit this bug report at https://bugs.php.net/bug.php?id=81215&edit=1