Feature gate: #![feature(box_as_non_null)]

This is a tracking issue for Box::as_non_null()

See also #130364, #157843, and #129090 for similar features.

Public API

impl<T: ?Sized, A: Allocator> Box<T, A> {
    pub fn as_non_null(b: &mut Self) -> NonNull<T>;
}

Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

• ACP: Add Box::as_non_null libs-team#799
• Implementation: Implement Box::as_non_null(). #157347
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• Should this be named as_non_null or as_nonnull? See also Partially stabilize box_vec_non_null #157226 (comment)
• Confirm whether we want a &self or &mut self argument. See also Tracking Issue for Vec::as_non_null() #157843.