It doesn’t but the problem space is more constrained as you are at least in control of heap vs stack storage. Register clearing is not natively available though. To put it more simply: yes but you can write this in rust- you can’t write it in go today.

Okay, fair point, sort of. Rust does not have a built-in feature to zero data. Rust does automatically drop references to data on the heap. Zeroing data is fairly trivial, whereas in go, the issue is non-trivial (afaiu).

  use std::ptr;
  
  struct SecretData {
      data: Vec<u8>,
  }
  
  impl Drop for SecretData {
      fn drop(&mut self) {
          // Zero out the data
          unsafe {
              ptr::write_bytes(self.data.as_mut_ptr(), 0, self.data.len());
          }
      }
  }