# Backlog Bonanza 2022-06-15

[GitHub query](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AC-tracking-issue+label%3AT-lang)

## What are we DOING?

* Take things that have been unstable for a while and "disposition them".
* Goal: Everything that is nightly only has one or more of the following labels, indicating the blocker(s) to stabilizing it:
* S-tracking-ready-to-stabilize: Needs a stabilization PR (good to go :train:)
* S-tracking-needs-to-bake: Needs time to bake (set a date? other criteria?)
* S-tracking-impl-incomplete: Not code complete or blocking bugs
* S-tracking-unimplemented: Implementation not begun
* S-tracking-design-concerns: Blocking design concerns
* This might be "doesn't quite seem to deliver value we hoped for" or "something doesn't feel right"
* S-tracking-perma-unstable
* Internal implementation detail of rustc, stdlib
* S-tracking-needs-investigation

Attendance:

## Issue 57288

https://github.com/rust-lang/rust/issues/57288

#![no_std]

extern crate alloc;

use alloc::vec::Vec;

Removed S-tracking-issue

## Tracking issue for making std-surfaced macro intrinsics available via std:: paths #57289

https://github.com/rust-lang/rust/issues/57289

## Tracking issue for &mut T in const contexts (const_mut_refs) #57349

https://github.com/rust-lang/rust/issues/57349

## https://github.com/rust-lang/rust/issues/57563

* Skipped - metabug

## Tracking issue for making dbg!(x) work in const fn #58278

https://github.com/rust-lang/rust/issues/58278

Design concerns (more like: needs a design).

## Tracking issue for #[ffi_const] #58328

https://github.com/rust-lang/rust/issues/58328

needs summary, but probably fully implemented and ready to stabilize

## Tracking issue for #[ffi_pure] #58329

https://github.com/rust-lang/rust/issues/58329

needs summary, but probably fully implemented and ready to stabilize

## Tracking issue for RFC 2627: #[link(kind="raw-dylib")] #58713

Impl incomplete, but may be able to stabilize a subset; posting comment to ask.

## Tracking issue for RFC 2645, "Transparent Unions" (formerly: and Enums) #60405

https://github.com/rust-lang/rust/issues/60405

Design concerns (e.g., https://github.com/rust-lang/rust/issues/60405#issuecomment-624860809)

## Tracking issue for "Lazy normalization" #60471

on types team radar

## Tracking issue for RFC 2363, "Allow arbitrary enums to have explicit discriminants" #60553

We nearly stabilized this, but then backed it out.

Design concerns (ish), but more like "needs a full design doc, for the full feature space, not just the delta".

https://github.com/rust-lang/rust/issues/60553#issuecomment-1156759639

## Tracking issue for existential lifetimes #60670

https://github.com/rust-lang/rust/issues/60670

Re-tagging to T-types, dropping tracking issue.

## Tracking issue for #![feature(async_closure)] (RFC 2394) #62290

Looks like wg async is aware of this, so seems OK to let that happen. Asking for a new summary.

## Lifetime elision rules in self types #63003

Mark to decide what to do next, maybe close.