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

Issue: https://github.com/php/php-src/issues/7915 Comment Author: jjdunn back online. problem occurred once on Jan 12; and again today Feb 14. Today's instance involved five CLI processes running concurrently. each process creates two dump files. In 10x dumps, the error is always at accel_new_interned_strings+66. looks like adding the opcache.file_cache configuration helped some; but the failures continue. Possibly due to multiple concurrent CLI processes? I have not yet tried adding the -d cache-id as suggested previously. Is that the next best thing to do ? I'm happy to continue trying work-around, but I would (very respectfully) point out that there *is* a bug somewhere which is causing a crash....anything I can do to help troubleshoot I'm happy to help with, keeping in mind I'm not a PHP core developer and have no ability to build or debug PHP locally. Nor can I reproduce this problem on demand - it only happens on a loaded production server.