3 ms·

As I understand it, you can't disable just borrow checker somewhere where you don't need it.

• steveklabnik 10y ago
  It's subtle. Unsafe Rust is a superset of safe Rust; that is, all valid safe Rust code is valid unsafe Rust code. fn foo() { unsafe { let x = &5; // this is still going to get borrow checked } } Since it's a superset, it gives you access to new tools, that don't interact with the borrow checker, rather than "turning the borrow checker off". fn foo() { unsafe { let x = *const 5; // this is not going to get borrow checked } }
  • dbaupp 10y ago
    (*const is not valid syntax: the way to not-borrow something is to coerce/cast it to an unsafe pointer within the statement, so that the borrow ends at the ;, e.g. give x an explicit raw pointer type in the first example.)
    • steveklabnik 10y ago
      gah, i always mess this up, haha