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1,246,842,349 | 97,362 | Tracking Issue for RFC 3216: "Allow using `for<'a>` syntax when declaring closures" | <!--
NOTE: For library features, please use the "Library Tracking Issue" template instead.
Thank you for creating a tracking issue! 📜 Tracking issues are for tracking a
feature from implementation to stabilisation. Make sure to include the relevant
RFC for the feature if it has one. Otherwise provide a short sum... | I'd like to work on implementing this 👀
@rustbot claim<|endoftext|>The implementation section needs to be updated to mention #98705.<|endoftext|>I bumped on this issue and I would like to share some code that maybe someone knowledgeable could comment on whether we are likely to get the features demonstrated or sim... | T-lang<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary<|endoftext|>T-types<|endoftext|>F-closure_lifetime_binder | 13 | https://api.github.com/repos/rust-lang/rust/issues/97362 | https://github.com/rust-lang/rust/issues/97362 | https://api.github.com/repos/rust-lang/rust/issues/97362/comments |
1,100,848,356 | 92,827 | Tracking Issue for Associated Const Equality | This is a tracking issue for the feature Associated Const Equality brought up in #70256.
The feature gate for the issue is `#![feature(associated_const_equality)]`.
### About tracking issues
Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other... | Hello!
Is there a corresponding RFC, or any context whatsoever concerning those changes ?
This is the first occurrence of language syntax change that is not backed by RFC and community feedback
@Centril @oli-obk <|endoftext|>Well, we have https://github.com/rust-lang/rust/issues/70256 which indeed has basically no ... | A-associated-items<|endoftext|>T-lang<|endoftext|>C-tracking-issue<|endoftext|>A-const-generics<|endoftext|>S-tracking-needs-summary<|endoftext|>F-associated_const_equality | 12 | https://api.github.com/repos/rust-lang/rust/issues/92827 | https://github.com/rust-lang/rust/issues/92827 | https://api.github.com/repos/rust-lang/rust/issues/92827/comments |
1,081,306,965 | 91,971 | Tracking issue for pref_align_of intrinsic | This intrinsic returns the "preferred" alignment of a type, which can be different from the *minimal* alignment exposed via `mem::align_of`. It is not currently exposed through any wrapper method, but can still be accessed by unstable code using the `intrinsics` or `core_intrinsics` features.
See https://github.com/... | Context for labels applied: it sounds like we need a summary of what precisely this means, as distinct from `align_of`, in a way that isn't tied to the LLVM backend. | T-lang<|endoftext|>T-libs-api<|endoftext|>C-tracking-issue<|endoftext|>A-intrinsics<|endoftext|>S-tracking-design-concerns<|endoftext|>S-tracking-needs-summary | 1 | https://api.github.com/repos/rust-lang/rust/issues/91971 | https://github.com/rust-lang/rust/issues/91971 | https://api.github.com/repos/rust-lang/rust/issues/91971/comments |
1,014,017,064 | 89,460 | Tracking Issue for `deref_into_dyn_supertrait` compatibility lint | ## What is this lint about
We're planning to add the dyn upcasting coercion language feature (see https://github.com/rust-lang/dyn-upcasting-coercion-initiative). Unfortunately this new coercion rule will take priority over certain other coercion rules, which will mean some behavior change. See #89190 for initial bug ... | Could we get a more detailed summary of the case this lint is addressing? dyn upcasting / coercion seems to have made a lot of progress, but this aspect of it doesn't seem to have gotten much discussion that I recall.<|endoftext|>@joshtriplett Sure.
It is known that from user's perspective, coercions has "prioritie... | A-lint<|endoftext|>T-lang<|endoftext|>T-compiler<|endoftext|>C-future-compatibility<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary | 5 | https://api.github.com/repos/rust-lang/rust/issues/89460 | https://github.com/rust-lang/rust/issues/89460 | https://api.github.com/repos/rust-lang/rust/issues/89460/comments |
927,632,656 | 86,555 | Tracking Issue for RFC 2528: type-changing struct update syntax | This is a tracking issue for RFC 2528 (rust-lang/rfcs#2528), type-changing struct update syntax.
The feature gate for the issue will be `#![feature(type_changing_struct_update)]`.
There is a dedicated Zulip stream: [`#project-type-changing-struct-update`](https://rust-lang.zulipchat.com/#narrow/stream/293397-proj... | It looks like this has been implemented; are there any further known issues or blockers with it?<|endoftext|>I'm eagerly awaiting stabilisation of this feature! Is there anything that still needs to be done?<|endoftext|>> It looks like this has been implemented; are there any further known issues or blockers with it?
... | B-RFC-approved<|endoftext|>T-lang<|endoftext|>C-tracking-issue<|endoftext|>F-type-changing-struct-update<|endoftext|>S-tracking-needs-summary | 5 | https://api.github.com/repos/rust-lang/rust/issues/86555 | https://github.com/rust-lang/rust/issues/86555 | https://api.github.com/repos/rust-lang/rust/issues/86555/comments |
849,330,204 | 83,788 | Tracking issue for the unstable "wasm" ABI | This issue is intended to track the stabilization of the `"wasm"` ABI added in https://github.com/rust-lang/rust/pull/83763. This new ABI is notably different from the "C" ABI where the "C" ABI's purpose is to match whatever the C ABI for the platform is (in this case whatever clang does). The "wasm" ABI, however, is i... | For folks wanting to give this a try, is there an experimental branch of `wasm-bindgen` that uses this "wasm" ABI?<|endoftext|>There is not a branch at this time, no.<|endoftext|>What is the current state of this? Is there wasm-bindgen support or tooling support for this? Is anything using this?
cc @alexcrichton<|en... | A-ffi<|endoftext|>T-lang<|endoftext|>B-unstable<|endoftext|>O-wasm<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary<|endoftext|>A-abi | 26 | https://api.github.com/repos/rust-lang/rust/issues/83788 | https://github.com/rust-lang/rust/issues/83788 | https://api.github.com/repos/rust-lang/rust/issues/83788/comments |
777,464,477 | 80,619 | Tracking Issue for infallible promotion | <!--
Thank you for creating a tracking issue! 📜 Tracking issues are for tracking a
feature from implementation to stabilisation. Make sure to include the relevant
RFC for the feature if it has one. Otherwise provide a short summary of the
feature and link any relevant PRs or issues, and remove any sections that ar... | In https://github.com/rust-lang/rust/pull/80243 we learned that there is at least some code (e.g. https://github.com/rodrimati1992/abi_stable_crates/issues/46) that relies in non-trivial ways on `const fn` calls being promoted in a `const`/`static` initializer. We need to figure out how to move forward with such code. ... | T-lang<|endoftext|>C-tracking-issue<|endoftext|>A-const-eval<|endoftext|>S-tracking-needs-summary | 11 | https://api.github.com/repos/rust-lang/rust/issues/80619 | https://github.com/rust-lang/rust/issues/80619 | https://api.github.com/repos/rust-lang/rust/issues/80619/comments |
687,493,937 | 76,001 | Tracking Issue for inline const expressions and patterns (RFC 2920) | This is a tracking issue for the RFC "Inline `const` expressions and patterns" (rust-lang/rfcs#2920).
The feature gate for the issue is `#![feature(inline_const)]`.
### About tracking issues
Tracking issues are used to record the overall progress of implementation.
They are also uses as hubs connecting to other... | With regard to the lint, is there any semantic difference between the two? Intuitively I would expect them to behave identically (static lifetimes).<|endoftext|>They behave identically. The point of the lint is to have a single "idiomatic" form.
> Naming: "inline const", "const block", or "anonymous const"?
The i... | B-RFC-approved<|endoftext|>T-lang<|endoftext|>T-compiler<|endoftext|>C-tracking-issue<|endoftext|>A-const-eval<|endoftext|>F-inline_const<|endoftext|>S-tracking-needs-summary | 74 | https://api.github.com/repos/rust-lang/rust/issues/76001 | https://github.com/rust-lang/rust/issues/76001 | https://api.github.com/repos/rust-lang/rust/issues/76001/comments |
674,921,649 | 75,251 | Tracking Issue for const MaybeUninit::as(_mut)_ptr (feature: const_maybe_uninit_as_ptr) | <!--
Thank you for creating a tracking issue! 📜 Tracking issues are for tracking a
feature from implementation to stabilisation. Make sure to include the relevant
RFC for the feature if it has one. Otherwise provide a short summary of the
feature and link any relevant PRs or issues, and remove any sections that ar... | There doesn't appear to be any blockers for the non-mut version, unless I'm missing something?<|endoftext|>Visiting for T-compiler backlog bonanza. This seems likely to be ready to stabilize, but since I'm not certain, I'm tagging with "needs summary"
Also, we think the question of whether to stabilize these methods... | T-libs-api<|endoftext|>C-tracking-issue<|endoftext|>disposition-merge<|endoftext|>finished-final-comment-period<|endoftext|>S-tracking-needs-summary | 11 | https://api.github.com/repos/rust-lang/rust/issues/75251 | https://github.com/rust-lang/rust/issues/75251 | https://api.github.com/repos/rust-lang/rust/issues/75251/comments |
637,330,037 | 73,255 | Tracking issue for `#![feature(const_precise_live_drops)]` | Feature gate for the more precise version of const-checking in #71824.
(Potential) blockers:
- https://github.com/rust-lang/rust/issues/91009 | Cc @rust-lang/wg-const-eval (which I think never happened for this feature or the PR)<|endoftext|>Is there particular reason why this was moved to be a feature?
It is more or less bug fix to inaccurate drop detection.
So shouldn't it be already stable?
This would make it easier to create builders with generic parame... | A-destructors<|endoftext|>T-lang<|endoftext|>T-compiler<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>A-const-eval<|endoftext|>S-tracking-needs-summary | 50 | https://api.github.com/repos/rust-lang/rust/issues/73255 | https://github.com/rust-lang/rust/issues/73255 | https://api.github.com/repos/rust-lang/rust/issues/73255/comments |
606,453,799 | 71,520 | Use lld by default on x64 msvc windows | This is a metabug, constraining the unbound scope of #39915.
# What is lld
[A linker that's part of the llvm project](https://lld.llvm.org/index.html), which is desirable for two reasons:
* it's very friendly to cross compilation (hence its emphasis for embedded targets)
* it's very fast (often runs in half the... | >(TODO: how is it accessed? -C link-flavor?)
`-C linker=lld` (but `-C linker-flavor=lld` should also work).<|endoftext|>This ought to be a bit more straightforward than using lld with gcc since with MSVC you do conventionally invoke the linker directly, and lld has an [`lld-link.exe` binary](https://lld.llvm.org/win... | A-linkage<|endoftext|>metabug<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary | 29 | https://api.github.com/repos/rust-lang/rust/issues/71520 | https://github.com/rust-lang/rust/issues/71520 | https://api.github.com/repos/rust-lang/rust/issues/71520/comments |
587,887,630 | 70,401 | Tracking Issue for `-Z src-hash-algorithm` | This is the tracking issue for the unstable option `-Z src-hash-algorithm`
### Steps
- [x] Implementation PR #69718
- [ ] Adjust documentation
- [ ] Stabilization PR
### Unresolved Questions
- Should we have a separate option in the target specification to specify the preferred hash algorithm, or continue to... | #73526 has been merged, updating LLVM to 11 and making it possible to support SHA256 as well. I guess for now one still has to give compatibility for older LLVMs though, so one maybe has to place a few cfg's here and there.<|endoftext|>Are there documentation changes needed for this? I'd be happy to help!<|endoftext|>☝... | A-debuginfo<|endoftext|>T-compiler<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary<|endoftext|>A-cli | 5 | https://api.github.com/repos/rust-lang/rust/issues/70401 | https://github.com/rust-lang/rust/issues/70401 | https://api.github.com/repos/rust-lang/rust/issues/70401/comments |
574,486,204 | 69,664 | Tracking Issue for the `avr-interrupt`/`avr-non-blocking-interrupt` calling convention/ABI | <!--
Thank you for creating a tracking issue! 📜 Tracking issues are for tracking a
feature from implementation to stabilisation. Make sure to include the relevant
RFC for the feature if it has one. Otherwise provide a short summary of the
feature and link any relevant PRs or issues, and remove any sections that ar... | Raised to appease `tidy` in #69478.<|endoftext|>In https://github.com/rust-lang/rust/issues/40180 we mentioned wanting a (single) RFC for target-specific interrupt calling conventions, and that work is in progress in https://github.com/rust-lang/rfcs/pull/3246; you may want to coordinate with that work in progress. | T-lang<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>WG-embedded<|endoftext|>O-AVR<|endoftext|>S-tracking-needs-summary | 2 | https://api.github.com/repos/rust-lang/rust/issues/69664 | https://github.com/rust-lang/rust/issues/69664 | https://api.github.com/repos/rust-lang/rust/issues/69664/comments |
551,594,354 | 68,318 | Tracking issue for negative impls | Generalized negative impls were introduced in https://github.com/rust-lang/rust/pull/68004. They were split out from "opt-in builtin traits" (https://github.com/rust-lang/rust/issues/13231).
## Work in progress
This issue was added in advance of #68004 landed so that I could reference it from within the code. It... | Odd possibly off topic question about this. The following compiles:
```
#![feature(negative_impls)]
pub struct Test{
}
impl !Drop for Test {}
fn foo(){
drop(Test{})
}
```
Should it? <|endoftext|>> Odd possibly off topic question about this. The following compiles:
>
> ```
> #![feature(negati... | A-traits<|endoftext|>T-lang<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>F-negative_impls<|endoftext|>S-tracking-impl-incomplete<|endoftext|>S-tracking-needs-summary | 17 | https://api.github.com/repos/rust-lang/rust/issues/68318 | https://github.com/rust-lang/rust/issues/68318 | https://api.github.com/repos/rust-lang/rust/issues/68318/comments |
493,756,545 | 64,490 | Tracking issue for RFC 2582, `&raw [mut | const] $place` (raw_ref_op) | This is a tracking issue for the RFC "an operator to take a raw reference" (rust-lang/rfcs#2582), feature(raw_ref_op).
**Steps:**
- [ ] Implement the RFC (see [this comment](https://github.com/rust-lang/rust/issues/64490#issuecomment-531579111) for a detailed checklist)
- [ ] Adjust documentation ([see instructi... | I'll try to get a PR open for this soon.<|endoftext|>I would suggest splitting the implementation work up into phases to make each part thoroughly reviewed and tested. However, think of this list as a bunch of tasks that need to be done at some point.
1. [x] Implement `&raw [mut | const] $expr` in the parser and AST... | B-RFC-approved<|endoftext|>T-lang<|endoftext|>C-tracking-issue<|endoftext|>requires-nightly<|endoftext|>F-raw_ref_op<|endoftext|>S-tracking-needs-summary | 77 | https://api.github.com/repos/rust-lang/rust/issues/64490 | https://github.com/rust-lang/rust/issues/64490 | https://api.github.com/repos/rust-lang/rust/issues/64490/comments |
486,862,701 | 63,997 | Tracking issue for const fn pointers | Sub-tracking issue for https://github.com/rust-lang/rust/issues/57563.
This tracks `const fn` types and calling `fn` types in `const fn`.
---
From the RFC (https://github.com/oli-obk/rfcs/blob/const_generic_const_fn_bounds/text/0000-const-generic-const-fn-bounds.md#const-function-pointers):
## `const` func... | I think that, at the very least, this should work:
```rust
const fn foo() {}
const FOO: const fn() = foo;
const fn bar() { FOO() }
const fn baz(x: const fn()) { x() }
const fn bazz() { baz(FOO) }
```
For this to work:
* `const` must be part of `fn` types (just like `unsafe`, the `extern "ABI"`, etc.)
* ... | T-lang<|endoftext|>A-const-fn<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary | 23 | https://api.github.com/repos/rust-lang/rust/issues/63997 | https://github.com/rust-lang/rust/issues/63997 | https://api.github.com/repos/rust-lang/rust/issues/63997/comments |
473,762,264 | 63,084 | Tracking issue for `const fn` `type_name` | This is a tracking issue for making and stabilizing `type_name` as `const fn`. It is not clear whether this is sound. Needs some T-lang discussion probably, too.
Steps needed:
* [x] Implementation (essentially add `const` and `#[rustc_const_unstable(feature = "const_type_name")` to the function and add tests show... | > This function can change its output between rustc compilations
Can the output change between compiling a library crate, and a binary crate using that library? Or only when switching rustc versions?<|endoftext|>> Can the output change between compiling a library crate, and a binary crate using that library?
No, ... | T-lang<|endoftext|>T-libs-api<|endoftext|>B-unstable<|endoftext|>A-const-fn<|endoftext|>C-tracking-issue<|endoftext|>requires-nightly<|endoftext|>Libs-Tracked<|endoftext|>Libs-Small<|endoftext|>S-tracking-needs-summary | 21 | https://api.github.com/repos/rust-lang/rust/issues/63084 | https://github.com/rust-lang/rust/issues/63084 | https://api.github.com/repos/rust-lang/rust/issues/63084/comments |
473,431,185 | 63,012 | Tracking issue for -Z binary-dep-depinfo | This is a tracking issue for `-Z binary-dep-depinfo` added in #61727.
The cargo side is implemented in https://github.com/rust-lang/cargo/pull/7137.
Blockers:
- [ ] Canonicalized paths on Windows. The dep-info file includes a mix of dos-style and extended-length (`\\?\`) paths, and I think we want to use only on... | In https://github.com/rust-lang/rust/pull/68298 we fixed binary dep-depinfo to be less eager to emit dependencies on dylib/rlib files when emitting rlibs and rmeta files, as we only need rmeta input in that case.
It was also noted that we currently do not correctly emit plugin dependencies (I'm not entirely sure of ... | T-compiler<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>requires-nightly<|endoftext|>S-tracking-design-concerns<|endoftext|>S-tracking-needs-summary<|endoftext|>A-cli | 18 | https://api.github.com/repos/rust-lang/rust/issues/63012 | https://github.com/rust-lang/rust/issues/63012 | https://api.github.com/repos/rust-lang/rust/issues/63012/comments |
462,983,150 | 62,290 | Tracking issue for `#![feature(async_closure)]` (RFC 2394) | This is a tracking issue for `#![feature(async_closure)]` (rust-lang/rfcs#2394).
The feature gate provides the `async |...| expr` closure syntax.
**As with all tracking issues for the language, please file anything unrelated to implementation history, that is: bugs and design questions, as separate issues as oppose... | Hi, what's the next step for this issue?<|endoftext|>@Centril am bumping into this one quite often in beta... from an ergonomics point of view it would be great to get this stable if there's no outstanding concerns / issues... - is this something we might consider putting 'on-deck', or does it need more settlement time... | B-RFC-approved<|endoftext|>A-closures<|endoftext|>T-lang<|endoftext|>B-unstable<|endoftext|>B-RFC-implemented<|endoftext|>C-tracking-issue<|endoftext|>A-async-await<|endoftext|>AsyncAwait-Triaged<|endoftext|>F-async_closures<|endoftext|>requires-nightly<|endoftext|>S-tracking-needs-summary<|endoftext|>WG-async | 28 | https://api.github.com/repos/rust-lang/rust/issues/62290 | https://github.com/rust-lang/rust/issues/62290 | https://api.github.com/repos/rust-lang/rust/issues/62290/comments |
408,461,314 | 58,329 | Tracking issue for #[ffi_pure] | Annotates an extern C function with C [`pure`](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#Common-Function-Attributes) attribute. | This corresponds to the `readonly` LLVM attribute.<|endoftext|>Is this fully implemented and ready for potential stabilization, or is there any blocker? | A-ffi<|endoftext|>T-lang<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary | 2 | https://api.github.com/repos/rust-lang/rust/issues/58329 | https://github.com/rust-lang/rust/issues/58329 | https://api.github.com/repos/rust-lang/rust/issues/58329/comments |
408,461,263 | 58,328 | Tracking issue for #[ffi_const] | Annotates an extern C function with C [`const`](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#Common-Function-Attributes) attribute.
https://doc.rust-lang.org/beta/unstable-book/language-features/ffi-const.html | This corresponds to the LLVM `readnone` attribute.<|endoftext|>Is this fully implemented and ready for potential stabilization, or is there any blocker? | A-ffi<|endoftext|>T-lang<|endoftext|>B-unstable<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary | 2 | https://api.github.com/repos/rust-lang/rust/issues/58328 | https://github.com/rust-lang/rust/issues/58328 | https://api.github.com/repos/rust-lang/rust/issues/58328/comments |
376,960,106 | 55,628 | Tracking issue for `trait alias` implementation (RFC 1733) | This is the tracking issue for **implementing** (*not* discussing the design) RFC https://github.com/rust-lang/rfcs/pull/1733. It is a subissue of https://github.com/rust-lang/rust/issues/41517.
## Current status
Once #55101 lands, many aspects of trait aliases will be implemented. However, some known limitations... | Good summary. Thanks for writing this up.<|endoftext|>Have we considered blocking stabilization on lazy normalization?
That is, I'm worried that these are equivalent problems:
```rust
trait Foo<X> {}
type Bar<X: ExtraBound> = dyn Foo<X>;
fn bad<X>(_: &Bar<X>) {}
trait Foo2<X: ExtraBound> = Foo<X>;
fn bad2<X>... | A-traits<|endoftext|>B-unstable<|endoftext|>B-RFC-implemented<|endoftext|>C-tracking-issue<|endoftext|>S-tracking-needs-summary<|endoftext|>T-types<|endoftext|>S-types-deferred | 4 | https://api.github.com/repos/rust-lang/rust/issues/55628 | https://github.com/rust-lang/rust/issues/55628 | https://api.github.com/repos/rust-lang/rust/issues/55628/comments |
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