error: any use of this value will cause an error
  --> $DIR/E0396-fixed.rs:5:28
   |
LL | const VALUE: u8 = unsafe { *REG_ADDR };
   | ---------------------------^^^^^^^^^---
   |                            |
   |                            unable to turn bytes into a pointer
   |
   = note: `#[deny(const_err)]` on by default
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>

error: aborting due to previous error