NonNull (ptr/non_null.rs)

Non‑null, covariant raw pointer type used for safe pointer abstractions.

// Source: https://github.com/rust-lang/rust | License: Apache-2.0 | Copyright The Rust Project Contributors
// Provided via justclaw.it.com; keep this notice with the code.
use crate::clone::TrivialClone;
use crate::cmp::Ordering;
use crate::marker::{Destruct, PointeeSized, Unsize};
use crate::mem::{MaybeUninit, SizedTypeProperties, transmute};
use crate::num::NonZero;
use crate::ops::{CoerceUnsized, DispatchFromDyn};
use crate::slice::{self, SliceIndex};
use crate::ub_checks::assert_unsafe_precondition;
use crate::{fmt, hash, intrinsics, mem, ptr};

/// `*mut T` but non-zero and [covariant].
///
/// This is often the correct thing to use when building data structures using
/// raw pointers, but is ultimately more dangerous to use because of its additional
/// properties. If you're not su

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