error[E0512]: cannot transmute between types of different sizes, or dependently-sized types --> $DIR/issue-79494.rs:5:29 | LL | const ZST: &[u8] = unsafe { std::mem::transmute(1usize) }; | ^^^^^^^^^^^^^^^^^^^ | = note: source type: `usize` (64 bits) = note: target type: `&[u8]` (128 bits) error: aborting due to previous error For more information about this error, try `rustc --explain E0512`.