Feature gate: #![feature(const_replace)]

This is a tracking issue for making the functions mem::replace and ptr::replace const fn.

Public API

mod mem {
    pub const fn replace<T>(dest: &mut T, src: T) -> T;
}

mod ptr {
    pub const unsafe fn replace<T>(dst: *mut T, mut src: T) -> T;
}

Steps / History

• Implementation: Constify copy related functions #83091
• Final commenting period (FCP)
• Stabilization PR - Stabilize const ptr::write* and mem::replace #130954

Unresolved Questions

• None yet.