Rust

I left something important out from my explanation. Your example still holds ownership of the data, so that’s where the rules are violated with those raw pointers. You have to use Box::into_raw or something similar to disassociate the data from the Rust compiler. Then you can alias it using raw pointers.

@soulsource @anlumo dude your whole code is UB. A reference & means that the data behind it never changes while any reference exists, allowing multiple pointers to point at it at the same time (aliasing); whereas a mutable reference &mut means that the data behind may only be read or written by that pointer, i.e. multiple pointers (aliasing) can't exist. The compiler uses this to optimize code and remove stuff that you promise never happens. Always use miri, and go read the nomicon.