Hello internals, I’ve been trying to chase down a very subtle bug in 8.4 that only happens when OPcache is enabled (I'm trying to create a reproducer to file an actual bug). From what I can tell, OPcache doesn’t zero out cache slots, so occasionally, a cache slot will contain garbage that happens to pass asserts/checks that causes the program to behave incorrectly. Without OPcache, cache slots are always NULL if not set.
It's quite rare to end up in that situation, though, but I was wondering if anyone has any opinions on this? — Rob
