Bug #81062 [Com]: Infinite recursion causes a segmentation fault

Edit report at https://bugs.php.net/bug.php?id=81062&edit=1 ID: 81062 Comment by: wyrihaximus@php.net Reported by: me at matthewturland dot com Summary: Infinite recursion causes a segmentation fault Status: Not a bug Type: Bug Package: Reproducible crash Operating System: Fedora 33 PHP Version: 8.0.6 Block user comment: N Private report: N New Comment: Any code that can make PHP segfault is a bug, especially when no special extensions are at play. This specific bug has been in PHP for years, at least early PHP 7 maybe even late PHP 5, it's been a while. And PHP will report the runtime/memory limit error if you give it a bit more memory. Which makes me think it's about to do that but then runs out of memory and segfaults as a result. (Guessing a bit here tbh.) Previous Comments: ------------------------------------------------------------------------ [2021-05-20 21:26:42] requinix@php.net PHP will give you memory and/or execution time warnings *if they happen*. If you manage to smash the stack before they happen then you won't get any warnings. ------------------------------------------------------------------------ [2021-05-20 20:41:47] me at matthewturland dot com Description: ------------ See the referenced test script URL, which includes an explanation and a reproduceable test case. Test script: --------------- See https://github.com/elazar/php-segfault. Expected result: ---------------- PHP should either block or emit an error indicating that memory_limit or max_execution_time was exceeded or something of that nature. Actual result: -------------- Segmentation fault (core dumped) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=81062&edit=1