error[E0277]: the trait bound `*const usize: IntoBytes` is not satisfied --> $DIR/transmute-ptr-to-usize.rs:21:30 | 21 | const POINTER_VALUE: usize = transmute!(&0usize as *const usize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | the trait `IntoBytes` is not implemented for `*const usize` | required by a bound introduced by this call | = note: Consider adding `#[derive(IntoBytes)]` to `*const usize` help: the trait `IntoBytes` is implemented for `usize` --> $WORKSPACE/src/impls.rs:77:5 | 77 | unsafe_impl!(usize: Immutable, TryFromBytes, FromZeros, FromBytes, IntoBytes); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ note: required by a bound in `POINTER_VALUE::transmute` --> $DIR/transmute-ptr-to-usize.rs:21:30 | 21 | const POINTER_VALUE: usize = transmute!(&0usize as *const usize); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | required by a bound in this function | required by this bound in `transmute` = note: this error originates in the macro `transmute` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.