The people coming will be coming for a variety of reasons but it won't be to take the jobs of the uneducated Americans
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> Moscow time, my local context.
Ah, Russia, what would we do without you! Never change. https://gwern.net/note/note#russia
But in the case of Options they tend to be both write-once and short-lived, so that removes a lot of necessity. Options are going to stay mostly on the stack and in async callbacks, unless they go into caches.
But for other data structures where multiples fields need a tag, I suspect Rust could use some bitfields for representing them. You’d need a fairly big win to make it worth implementing however.
Yes, Rust suppresses the niche optimization for values wrapped in an `UnsafeCell` (which is how you signal to the compiler that “atomically writing two values at once” might happen). https://github.com/rust-lang/rust/pull/68491
-fsanitize=undefined