fn main() {
    println!("{:?}", {
        unsafe { [1, 2, 3, 4].as_ref() as &[u8; 8] }
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (file:///playground)
error[E0605]: non-primitive cast: `&[i32]` as `&[u8; 8]`
 --> src/main.rs:5:18
  |
5 |         unsafe { [1, 2, 3, 4].as_ref() as &[u8; 8] }
  |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: an `as` expression can only be used to convert between primitive types. Consider using the `From` trait

error: aborting due to previous error

For more information about this error, try `rustc --explain E0605`.
error: Could not compile `playground`.

To learn more, run the command again with --verbose.

*/

/* ~~~~=== stdout ===~~~~

*/