Trait Alias Thin

trait Thin = Pointee<Metadata = ()>;

Pointers to types implementing this trait alias are “thin”.

This includes statically-Sized types and extern types.

Example

#![feature(ptr_metadata)]

fn this_never_panics<T: std::ptr::Thin>() {
    assert_eq!(size_of::<&T>(), size_of::<usize>())
}