alt Hacker NewsIt's not surprising that a mostly straightforward translation to (partly unsafe) Rust exhibits UB.
What is a bit disappointing is that the Rust code apparently has APIs that aren't marked unsafe but may cause UB anyway. When doing this kind of translation, I'd always err on the side of caution and start by marking all/most things unsafe. Or prompt the slopbots to do the same I guess.
Then you can go in and verify the safety of individual bits step by step.
From what I read from the PR comments, the case is that the unsafe blocks behave in a way that allows for UB.
This is expected, because unsafe rust can leave your program in an unhealthy state, since the language doesn't doesn't hold your hand anymore.