[php-src] Issue #7915: php_opcache crash - memory access violation

Issue: https://github.com/php/php-src/issues/7915 Author: jjdunn ### Description I don't know how to recreate the problem. it occurs on our production server, sporadically. 6x in past 4 days. never happened on old server (Windows 2012 R2) running same versions of PHP (8.0.14 x64 thread-safe) and apache httpd (2.4.51 x64), and the same opcache configuration. We are *not* using JIT. Windows Event Log shows: > Faulting application name: php.exe, version: 8.0.14.0, time stamp: 0x61bb14bc > Faulting module name: php_opcache.dll, version: 8.0.14.0, time stamp: 0x61bb1862 > Exception code: 0xc0000005 > Fault offset: 0x0000000000002fe6 > Faulting process id: 0x25d8 > Faulting application start time: 0x01d8045afae2031a > Faulting application path: C:\Program Files\php\php.exe > Faulting module path: C:\Program Files\PHP\ext\php_opcache.dll > Report Id: d7c91f64-1d66-4a3c-a206-7f1efaf4d8cc > Faulting package full name: > Faulting package-relative application ID: php.ini: ``` [PHP_OPCACHE] zend_extension=php_opcache.dll opcache.enable=1; opcache.enable_cli=1; opcache.memory_consumption=512; opcache.interned_strings_buffer=32; opcache.validate_timestamps=1; opcache.save_comments=0; opcache.revalidate_path=1; opcache.enable_file_override=1; opcache.max_file_size=0; opcache.file_cache_only=0; opcache.log_verbosity_level=2; opcache.mmap_base = 0x20000000 opcache.jit_buffer_size=0; opcache.jit=Off; ``` Running Windows DebugDiag tool, with PHP 8.0.14 symbols loaded, gives the report attached here: [opcache-crash-analysis.pdf](https://github.com/php/php-src/files/7833729/opcache-crash-analysis.pdf) ### PHP Version PHP 8.0.14 ### Operating System Windows Server 2019; apache httpd 2.4.51 x64