🔬 This is a nightly-only experimental API. (
ptr_metadata
#81513)
Expand description
Pointers to types implementing this trait alias are “thin”.
This includes statically-Sized
types and extern
types.
#![feature(ptr_metadata)]
fn this_never_panics<T: std::ptr::Thin>() {
assert_eq!(std::mem::size_of::<&T>(), std::mem::size_of::<usize>())
}
Run