Skip to content

Issues: rust-lang/rust

Draft release notes for 1.87
#140133 opened Apr 21, 2025 by BoxyUwU
Open 5
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Clear current search query, filters, and sorts
59 Open 128 Closed
59 Open 128 Closed
Author
Filter by author
Loading
Label
Filter by label
Loading
Use alt + click/return to exclude labels
or ⇧ + click/return for logical OR
Projects
Filter by project
Loading
Milestones
Filter by milestone
Loading
Assignee
Filter by who’s assigned
Sort
Sort by
Newest Oldest Most commented Least commented Recently updated Least recently updated Best match
Most reactions
👍 👎 😄 🎉 😕 ❤️ 🚀 👀

Issues list

std::slice::ChunkBy should implement Clone A-iterators Area: Iterators C-bug Category: This is a bug. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#137969 opened Mar 3, 2025 by nwoods-cimpress
7
Panic-safety issue with Zip specializations A-iterators Area: Iterators A-specialization Area: Trait impl specialization C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness P-high High priority T-libs Relevant to the library team, which will review and decide on the PR/issue.
#137255 opened Feb 19, 2025 by steffahn
@the8472
2
The implementation of InPlaceIterable for Flatten&FlatMap is unsound A-iterators Area: Iterators C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness T-libs Relevant to the library team, which will review and decide on the PR/issue.
#135103 opened Jan 4, 2025 by steffahn
9
Broken loop unrolling in branchy loop A-codegen Area: Code generation A-iterators Area: Iterators C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated code.
#117659 opened Nov 7, 2023 by dragostis
1
Missed optimization on short known length iterator A-iterators Area: Iterators A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-slow Issue: Problems and improvements with respect to performance of generated code.
#113691 opened Jul 14, 2023 by e00E
3
successors is 2x slower than map A-iterators Area: Iterators C-enhancement Category: An issue proposing an enhancement or a PR with one. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-slow Issue: Problems and improvements with respect to performance of generated code. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#113055 opened Jun 26, 2023 by Centri3
4
Missed optimization when computing max on an iterator A-iterators Area: Iterators A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-slow Issue: Problems and improvements with respect to performance of generated code.
#110595 opened Apr 20, 2023 by xTachyon
3
Documentation for HashMap's FromIterator with duplicate keys in the iterator A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools A-iterators Area: Iterators T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#110260 opened Apr 12, 2023 by jrose-signal
2
Taking exact number of elements from range iterator causes interger overflow A-iterators Area: Iterators C-bug Category: This is a bug. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#110196 opened Apr 11, 2023 by nazar-pc
5
Unable to call reverse on a Zip Iterator zipping a std::iter::Repeat A-iterators Area: Iterators C-enhancement Category: An issue proposing an enhancement or a PR with one. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#104729 opened Nov 22, 2022 by IceTDrinker
5
Add track_caller to iterator methods A-diagnostics Area: Messages for errors, warnings, and lints A-error-handling Area: Error handling A-iterators Area: Iterators C-discussion Category: Discussion or questions that doesn't represent real issues. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#102024 opened Sep 19, 2022 by xxchan
5
The iterator documentation lacks guidance for implementers of iterators with side-effects A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools A-iterators Area: Iterators
#96351 opened Apr 23, 2022 by nagisa
3
HashMap::from_iter doesn't compile without explicitly supplying the hasher A-inference Area: Type inference A-iterators Area: Iterators C-enhancement Category: An issue proposing an enhancement or a PR with one. T-libs Relevant to the library team, which will review and decide on the PR/issue. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#90879 opened Nov 13, 2021 by hniksic
3
impl FusedIterator for Cycle<I> is incorrect A-iterators Area: Iterators C-bug Category: This is a bug.
#90085 opened Oct 20, 2021 by fee1-dead
3
SpecExtend for TrustedLen is unsound A-iterators Area: Iterators C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness requires-nightly This issue requires a nightly compiler in some way. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#89948 opened Oct 16, 2021 by lcnr
7
Optimization of iteration over enums A-iterators Area: Iterators A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-mir-opt Area: MIR optimizations C-enhancement Category: An issue proposing an enhancement or a PR with one. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such
#87950 opened Aug 12, 2021 by vandenheuvel
5
[ER] Iterator::zip_exact A-iterators Area: Iterators C-feature-request Category: A feature request, i.e: not implemented / a PR. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#85342 opened May 15, 2021 by leonardo-m
8
Tracking Issue for edition-dependent IntoIterator for arrays A-array Area: `[T; N]` A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools A-edition-2021 Area: The 2021 edition A-iterators Area: Iterators C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC T-libs Relevant to the library team, which will review and decide on the PR/issue.
#84513 opened Apr 24, 2021 by m-ou-se
24 of 28 tasks
10
Slices that cover the last byte of the address space are invalid A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools A-iterators Area: Iterators T-libs Relevant to the library team, which will review and decide on the PR/issue.
#83996 opened Apr 8, 2021 by joboet
13
Unhelpful / misleading error message and help message when using a reference to a vector A-coercions Area: implicit and explicit `expr as Type` coercions A-iterators Area: Iterators C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#83924 opened Apr 6, 2021 by njor
4
Tracking Issue for Iterator::{dedup, dedup_by, dedup_by_key} A-iterators Area: Iterators C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#83747 opened Apr 1, 2021 by slerpyyy
3 tasks
2
&Box<[T]> does not impl IntoIterator A-box Area: Our favorite opsem complication A-iterators Area: Iterators C-feature-request Category: A feature request, i.e: not implemented / a PR. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#83589 opened Mar 27, 2021 by lopopolo
4
Add nuance to suggestion of !Copy expressions in for loops A-diagnostics Area: Messages for errors, warnings, and lints A-iterators Area: Iterators A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#82916 opened Mar 8, 2021 by estebank
1
Provide a means of turning iterators into fixed-size arrays A-array Area: `[T; N]` A-iterators Area: Iterators C-feature-request Category: A feature request, i.e: not implemented / a PR. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#81615 opened Feb 1, 2021 by bstrie
19
Calling Vec::extend repeatedly in a for loop is faster than calling it once on iter::flatten A-iterators Area: Iterators C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-slow Issue: Problems and improvements with respect to performance of generated code. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#79992 opened Dec 13, 2020 by smmalis37
4
ProTip! Updated in the last three days: updated:>2025-05-03.