Posted by ravenical 1/1/2026
Isn't rust's one of the main selling point is the barrow checker right?
Also how's the memory is handled? I know it'll drop every thing once it's out of scope but it seems you can make copies as much as you want. Looking at the loop example, I feel like this introduces memory leaks & undefined behavior.
The two main things the compiler allows in an unsafe block but not elsewhere are calling other code marked "unsafe" and dereferencing raw pointers. The net result is that safe code running in a system that's not exhibiting undefined behaviour is defined to continue to not exhibit undefined behaviour, but the compiler is unable in general to prove that an unsafe block won't trigger undefined behaviour.
You can side-step the borrow checker by using pointers instead of references, but using that power to construct an invalid reference is undefined behaviour.