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Tracking Issue for core::clone::CloneToUninit trait #126799

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@dtolnay

Description

@dtolnay

Feature gate: #![feature(clone_to_uninit)]

This is a tracking issue for CloneToUninit and its impls. This trait backs the behavior of Rc::make_mut and Arc::make_mut, and likely in the future also Box::clone.

Public API

// core::clone

pub unsafe trait CloneToUninit {
    unsafe fn clone_to_uninit(&self, dst: *mut Self);
}

unsafe impl<T: Clone> CloneToUninit for T;
unsafe impl<T: Clone> CloneToUninit for [T];

// TODO:
// unsafe impl CloneToUninit for str;
// unsafe impl CloneToUninit for CStr;
// unsafe impl CloneToUninit for OsStr;
// unsafe impl CloneToUninit for Path;

Steps / History

Unresolved Questions

Footnotes

  1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html

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    C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.

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