Bug #77620 [Opn->Fbk]: Opcache crashes on require file containing large array

Edit report at https://bugs.php.net/bug.php?id=77620&edit=1 ID: 77620 Updated by: sjon@php.net Reported by: kieran at miami-nice dot co dot uk Summary: Opcache crashes on require file containing large array -Status: Open +Status: Feedback Type: Bug Package: opcache Operating System: Windows PHP Version: 7.1.26 -Assigned To: +Assigned To: sjon Block user comment: N Private report: N New Comment: I've attempted to reproduce this using valgrind and a debug-build of 7.1.26 with opcache enabled, but it works fine and reports no leaks. If this is still an issue please provide more information Previous Comments: ------------------------------------------------------------------------ [2019-02-14 17:32:53] kieran at miami-nice dot co dot uk Description: ------------ This may be a duplicate of https://bugs.php.net/bug.php?id=76844 (stackoverflow), but unlike that issue I cannot replicate on Ubuntu. The test case was generated on Bitnami WAMP with AWS Windows 2019 Base image, https://bitnami.com/stack/wamp/installer and backtrace generated using https://bugs.php.net/bugs-generating-backtrace-win32.php The issue only occurs in browser, if you load the test script via CLI it works as expected. I was also unable to replicate the issue on Ubuntu 18.04 with PHP 7.1.26 or 7.2.15... Test script: --------------- https://gist.github.com/bytestream/8779696f8e53f40bffd8e5ff179f2514#file-test-php Actual result: -------------- PHP_OPCACHE!ZEND_SSA_CHECK_SCC_VAR+21DIn httpd__PID__3728__Date__02_14_2019__Time_04_59_15PM__290__Second_Chance_Exception_C00000FD.dmp the assembly instruction at php_opcache!zend_ssa_check_scc_var+21d in C:\Bitnami\wampstack-7.1.26-0\php\ext\php_opcache.dll from The PHP Group has caused a stack overflow exception (0xC00000FD) when trying to write to memory location 0x19e83ff8 on thread 3 https://gist.github.com/bytestream/8ae01bdb8be94b433c7110f99e83bd25 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77620&edit=1