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Draft release notes for 1.88.0
#141598 opened May 26, 2025 by Mark-Simulacrum
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Issues list

Stabilize feature(generic_arg_infer) A-const-generics Area: const generics (parameters and arguments) disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. F-generic_arg_infer Using `_` as a const argument: #![feature(generic_arg_infer)]` final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. I-lang-radar Items that are on lang's radar and will need eventual work or consideration. S-waiting-on-documentation Status: Waiting on approved PRs to documentation before merging S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#141610 opened May 26, 2025 by BoxyUwU Loading…
1
@lcnr
14
rustdoc query cycle regression A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-cycle Issue: A query cycle occurred while none was expected T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#141492 opened May 24, 2025 by BoxyUwU
8
ICE:called Option::unwrap() on a None value A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140891 opened May 10, 2025 by sososopy
1
Tracking issue for release notes of #74985: Tracking Issue for slice::array_chunks A-array Area: `[T; N]` A-const-generics Area: const generics (parameters and arguments) A-slice Area: `[T]` needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. relnotes Marks issues that should be documented in the release notes of the next release. relnotes-tracking-issue Marks issues tracking what text to put in release notes. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#139693 opened Apr 11, 2025 by rustbot
1
no suggestion to enable const generics features A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-generic_const_parameter_types `#![feature(generic_const_parameter_types)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139645 opened Apr 10, 2025 by lcnr
[WIP] mgca: Add ConstArg representation for const items A-const-generics Area: const generics (parameters and arguments) F-min_generic_const_args `#![feature(min_generic_const_args)]` S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139558 opened Apr 8, 2025 by camelid • Draft
@oli-obk @BoxyUwU
26
feature adt_const_params does not work with &'static str anymore A-const-generics Area: const generics (parameters and arguments) A-diagnostics Area: Messages for errors, warnings, and lints D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138657 opened Mar 18, 2025 by Arpadzein
2
Tracking Issue for feature(generic_const_parameter_types) A-const-generics Area: const generics (parameters and arguments) B-experimental Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize). C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC F-generic_const_parameter_types `#![feature(generic_const_parameter_types)]` PG-const-generics Project group: Const generics T-lang Relevant to the language team, which will review and decide on the PR/issue.
#137626 opened Feb 25, 2025 by BoxyUwU
6 tasks
min_generic_const_args: Braced paths should forbid infer vars A-const-generics Area: const generics (parameters and arguments) F-min_generic_const_args `#![feature(min_generic_const_args)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134086 opened Dec 9, 2024 by BoxyUwU
Incorrect rustdoc rendering of const generic default A-const-generics Area: const generics (parameters and arguments) A-cross-crate-reexports Area: Documentation that has been re-exported from a different crate C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#133848 opened Dec 4, 2024 by bjorn3
Const generic is incorrectly inferred A-const-generics Area: const generics (parameters and arguments) A-inference Area: Type inference C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#133390 opened Nov 23, 2024 by Pascal-So
1
Tracking Issue for Generic Constant Arguments MVP A-const-generics Area: const generics (parameters and arguments) C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC F-min_generic_const_args `#![feature(min_generic_const_args)]` PG-const-generics Project group: Const generics T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-lang Relevant to the language team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#132980 opened Nov 13, 2024 by camelid
4 of 15 tasks
ICE: Normalization of 'ty::ConstKind::Expr' is unimplemented A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132960 opened Nov 12, 2024 by matthiaskrgr
@BoxyUwU
3
Tracking issue for removing unnecessary ty::Const::{normalize,eval} calls from the type system A-const-generics Area: const generics (parameters and arguments) T-types Relevant to the types team, which will review and decide on the PR/issue.
#130704 opened Sep 22, 2024 by compiler-errors
5 of 7 tasks
@compiler-errors
6
Trait associated constants can have defaults while types cant A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-min_generic_const_args `#![feature(min_generic_const_args)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130288 opened Sep 12, 2024 by BoxyUwU
Next-gen Trait Solver does not implement Generic Const Expressions A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` requires-incomplete-features This issue requires the use of incomplete features. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#129766 opened Aug 29, 2024 by GamingLiamStudios
6
ICE: None in compiler/rustc_middle/src/ty/sty.rs A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#129209 opened Aug 17, 2024 by matthiaskrgr
3
rustdoc: Weird display of <ToBytes for Simd<_, _>>::Bytes associated type A-const-generics Area: const generics (parameters and arguments) A-cross-crate-reexports Area: Documentation that has been re-exported from a different crate C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#129165 opened Aug 16, 2024 by GoldsteinE
rustdoc prints the names of private consts when used as const generic parameter defaults A-const-eval Area: Constant evaluation, covers all const contexts (static, const fn, ...) A-const-generics Area: const generics (parameters and arguments) A-visibility Area: Visibility / privacy C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#129035 opened Aug 13, 2024 by kpreid
Tracking Issue for unsized const parameter types: feature(unsized_const_params) A-const-generics Area: const generics (parameters and arguments) C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC F-unsized_const_params `#![feature(unsized_const_params)]` T-lang Relevant to the language team, which will review and decide on the PR/issue.
#128028 opened Jul 21, 2024 by BoxyUwU
5 tasks
Unconstrained lifetimes in impl headers are usable in assoc consts A-const-generics Area: const generics (parameters and arguments) T-types Relevant to the types team, which will review and decide on the PR/issue.
#127927 opened Jul 18, 2024 by BoxyUwU
@BoxyUwU
rustdoc leaks ident macro meta-variables in non-literal const exprs in assoc tys & impl trait refs (excl. self ty) A-const-generics Area: const generics (parameters and arguments) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#127429 opened Jul 6, 2024 by maia-s
rustc hangs / infinite loop on small example with generic_const_exprs and specialization A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-hang Issue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc. P-low Low priority
#126609 opened Jun 17, 2024 by anderspapitto
1
Combining generic_const_exprs with macros gives incorrect error suggestions (referencing source code) A-const-generics Area: const generics (parameters and arguments) A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` T-types Relevant to the types team, which will review and decide on the PR/issue.
#125905 opened Jun 3, 2024 by camelid
#![feature(generic_const_exprs)] does not compile stable code related to lifetimes A-const-generics Area: const generics (parameters and arguments) C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124531 opened Apr 29, 2024 by FeanorTheElf
1
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