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Draft release notes for 1.86.0
#138795 opened Mar 21, 2025 by cuviper
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Issues list

The Index of Option is outdated as it's missing some functions A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools needs-triage This issue may need triage. Remove it if it has been sufficiently triaged.
#138955 opened Mar 26, 2025 by Natural-selection1 updated Mar 26, 2025
1
The Index of Result is outdated as it's missing some functions A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools needs-triage This issue may need triage. Remove it if it has been sufficiently triaged.
#138966 opened Mar 26, 2025 by Natural-selection1 updated Mar 26, 2025
1
rust-objcopy is x86-64 executable on aarch64-unknown-linux-gnu C-bug Category: This is a bug. O-AArch64 Armv8-A or later processors in AArch64 mode T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
#138943 opened Mar 25, 2025 by Stevenjin8 updated Mar 26, 2025
3
Tracking issue for release notes of #138128: Stabilize #![feature(precise_capturing_in_traits)] 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-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.
#138851 opened Mar 23, 2025 by rustbot updated Mar 26, 2025 1.87.0
Wrong symbols are referenced for raw-dylib on i686-pc-windows-gnu A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. F-raw_dylib `#![feature(raw_dylib)]` O-windows-gnu Toolchain: GNU, Operating system: Windows O-x86_32 Target: x86 processors, 32 bit (like i686-*) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138963 opened Mar 26, 2025 by glandium updated Mar 26, 2025
Segmentation fault when thread using dynamically loaded Rust library exits A-thread-locals Area: Thread local storage (TLS) C-bug Category: This is a bug. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#91979 opened Dec 15, 2021 by devongovett updated Mar 26, 2025
14
Unnecessary compares and branches in asm output 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 E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. I-slow Issue: Problems and improvements with respect to performance of generated code.
#45459 opened Oct 23, 2017 by Boscop updated Mar 26, 2025
2
Compiler do not remove slice bounds checks if index is guaranteed to be less than part of the length A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. I-slow Issue: Problems and improvements with respect to performance of generated code.
#110971 opened Apr 29, 2023 by AngelicosPhosphoros updated Mar 26, 2025
4
Tracking issue for cfg_match C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#115585 opened Sep 6, 2023 by c410-f3r updated Mar 26, 2025
1 of 3 tasks
31
PowerPC SPE targets don't have spe target feature enabled A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. O-PowerPC Target: PowerPC processors
#138960 opened Mar 26, 2025 by beetrees updated Mar 26, 2025
1
[mir-opt] avoid *& when reading primitive from slice A-mir-opt Area: MIR optimizations A-mir-opt-GVN Area: MIR opt Global Value Numbering (GVN) C-enhancement Category: An issue proposing an enhancement or a PR with one. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138936 opened Mar 25, 2025 by scottmcm updated Mar 26, 2025
1
f32 += f32 * u32 is faster in a loop than f32 += f32; can be defeated (a little bit) with #[cold] annotation? A-codegen Area: Code generation C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example I-slow Issue: Problems and improvements with respect to performance of generated code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138953 opened Mar 25, 2025 by nabijaczleweli updated Mar 26, 2025
2
ICE: refutable patterns should always have a place to inspect C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ I-prioritize Issue: Indicates that prioritization has been requested for this issue. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. regression-from-stable-to-nightly Performance or correctness regression from stable to nightly. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138958 opened Mar 26, 2025 by meithecatte updated Mar 26, 2025
1
1
ICE: TAIT and incremental compilation A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-incr-comp Area: Incremental compilation C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138948 opened Mar 25, 2025 by Ddystopia updated Mar 25, 2025
1
@compiler-errors
1
Tracking Issue for AVX512 intrinsics C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC I-libs-api-nominated Nominated for discussion during a libs-api team meeting. O-x86_32 Target: x86 processors, 32 bit (like i686-*) O-x86_64 Target: x86-64 processors (like x86_64-*) T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#111137 opened May 3, 2023 by Amanieu updated Mar 25, 2025
2 tasks
32
Overflow when deriving Clone on a struct with a recursive GAT A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) A-trait-system Area: Trait system C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. T-types Relevant to the types team, which will review and decide on the PR/issue.
#102580 opened Oct 2, 2022 by PizzasBear updated Mar 25, 2025
2
Tracking Issue for slice::array_chunks A-array Area: `[T; N]` A-const-generics Area: const generics (parameters and arguments) A-slice Area: `[T]` C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. F-generic_const_exprs `#![feature(generic_const_exprs)]` final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. I-libs-api-nominated Nominated for discussion during a libs-api team meeting. Libs-Tracked Libs issues that are tracked on the team's project board. T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#74985 opened Jul 31, 2020 by lcnr updated Mar 25, 2025
5 tasks
78
Undefined hidden symbol compiling code with generics and const reference to static A-debuginfo Area: Debugging information in compiled programs (DWARF, PDB, etc.) A-monomorphization Area: Monomorphization C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138942 opened Mar 25, 2025 by davidzeng0 updated Mar 25, 2025
1
-C target_cpu=cortex-a72 (and -target-cpu=native on Raspberry Pi) wrongly enables crypto features that are optional on Cortex-A72 A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. A-targets Area: Concerning the implications of different compiler targets C-bug Category: This is a bug. I-miscompile Issue: Correct Rust code lowers to incorrect machine code I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness llvm-fixed-upstream Issue expected to be fixed by the next major LLVM upgrade, or backported fixes O-AArch64 Armv8-A or later processors in AArch64 mode P-high High priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#125033 opened May 12, 2024 by briansmith updated Mar 25, 2025
26
#[repr(align(4))] struct has 8 byte alignment A-align Area: alignment control (`repr(align(N))` and so on) A-diagnostics Area: Messages for errors, warnings, and lints A-repr Area: the `#[repr(stuff)]` attribute C-feature-request Category: A feature request, i.e: not implemented / a PR. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#48159 opened Feb 12, 2018 by gnzlbg updated Mar 25, 2025
12
Tracking Issue for arc_is_unique 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.
#138938 opened Mar 25, 2025 by SabrinaJewson updated Mar 25, 2025
1 of 4 tasks
ICE: format_args! optimization can construct a &str longer than isize::MAX C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138811 opened Mar 21, 2025 by thaliaarchi updated Mar 25, 2025
1
A "cannot infer type" compilation error appeared from 1.87.0-nightly (249cb84 2025-03-12) C-bug Category: This is a bug. I-prioritize Issue: Indicates that prioritization has been requested for this issue. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. regression-untriaged Untriaged performance or correctness regression.
#138937 opened Mar 25, 2025 by albertog78 updated Mar 25, 2025
1
@compiler-errors
1
rustc suggests to use impl trait in closure parameter which doesn't work A-diagnostics Area: Messages for errors, warnings, and lints T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138932 opened Mar 25, 2025 by pacak updated Mar 25, 2025
Offer a suggested fix for structs with a single field A-diagnostics Area: Messages for errors, warnings, and lints T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138931 opened Mar 25, 2025 by Wilfred updated Mar 25, 2025
ProTip! no:milestone will show everything without a milestone.