read/write volatile

Posted Jan 9, 2026 22:10 UTC (Fri) by josh (subscriber, #17465)
In reply to: read/write volatile by mb
Parent article: READ_ONCE(), WRITE_ONCE(), but not for Rust

> As I said, it's an LLVM problem on AVR. Which is not a stable tier.
> Atomic always use heavy syncing on AVR in the current compiler.

Ah, got it, thank you. Hopefully that can be fixed.

> My point was that I think volatile accesses are not sound in Rust for inter thread communication.

Right, I believe that's correct.