Comment by chiffaa

Unsafe code can break certain invariants of Rust, as `unsafe` is just a compiler "hold my beer" flag, which is why you're meant to do safety checks in your safe interface around unsafe code. If the unsafe code is wrapped in a way that does no guarding (or does something stupid in general), it is technically marked safe (because you said "rustc, hold my beer" as `unsafe` is also a contract) despite actually being unsafe