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Issues list

regression: ICE: Failed to normalize Alias(Opaque, AliasTy I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-low Low priority regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135668 opened Jan 18, 2025 by BoxyUwU
5
Rust 1.84 sometimes allows overlapping impls in incremental re-builds A-coherence Area: Coherence A-incr-comp Area: Incremental compilation 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-low Low priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135514 opened Jan 15, 2025 by steffahn
8
Performance regression on toy problem, but not for opt-level=1. 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. P-low Low priority regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135241 opened Jan 8, 2025 by TheThirdOne
3
ICE while trying to field project out of opaque value by utilizing type ascription A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. C-bug Category: This is a bug. F-type_ascription `#![feature(type_ascription)]` fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-low Low priority requires-nightly This issue requires a nightly compiler in some way. 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.
#134838 opened Dec 28, 2024 by fmease
5
Hidden type of "discarded" and thus unconstrained RPIT(IT) opaque types gets inferred to be the unit type () A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-inference Area: Type inference C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. P-low Low priority T-types Relevant to the types team, which will review and decide on the PR/issue.
#134311 opened Dec 14, 2024 by fmease
1
Trivial bounds with associated types regression 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`. P-low Low priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-types Relevant to the types team, which will review and decide on the PR/issue.
#134238 opened Dec 13, 2024 by konnorandrews
2
Detect different borrowing in different sub-expressions the same expression and suggest borrowing when applicable A-diagnostics Area: Messages for errors, warnings, and lints A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134219 opened Dec 12, 2024 by estebank
Invalid suggestion on anonymous lifetime parameter in precise capturing list if there are no input lifetimes A-diagnostics Area: Messages for errors, warnings, and lints A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. F-precise_capturing `#![feature(precise_capturing)]` P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134194 opened Dec 12, 2024 by fmease
1
3
[rustc_ast/src/ast_traits.rs:301] Stack overflow for nested expressions C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133773 opened Dec 2, 2024 by bf
1 of 4 tasks
1
[rustc] SIGSEGV maximum backtrace depth reached C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133772 opened Dec 2, 2024 by bf
9
candidate selection for normalization and trait goals disagree A-type-system Area: Type system I-types-nominated Nominated for discussion during a types team meeting. P-low Low priority T-types Relevant to the types team, which will review and decide on the PR/issue.
#133044 opened Nov 14, 2024 by lcnr
3
Code size regression iterating an array (opt-level=z) after 1.82.0 A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. I-heavy Issue: Problems and improvements with respect to binary size of generated code. P-low Low priority regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132890 opened Nov 11, 2024 by dcci
1
Code size regression (opt-level=z) after 1.82.0 A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. P-low Low priority regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132888 opened Nov 11, 2024 by dcci
1
Code size regression (opt-level=z) after 1.73.0 (~40%) C-bug Category: This is a bug. I-heavy Issue: Problems and improvements with respect to binary size of generated code. P-low Low priority regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132887 opened Nov 11, 2024 by dcci
1
ICE: called 'Result::unwrap_err()' on an 'Ok' value: MethodCallee C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-low Low priority 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.
#132882 opened Nov 10, 2024 by matthiaskrgr
4
The diagnostic emitter doesn't deal with non-ASCII characters correctly when eliding parts of overly long source lines A-diagnostics Area: Messages for errors, warnings, and lints A-Unicode Area: Unicode C-bug Category: This is a bug. D-diagnostic-infra Diagnostics: Issues that affect all diagnostics, or relate to the diagnostic machinery itself. P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132860 opened Nov 10, 2024 by fmease
@fmease
1
ICE: malformed malformed repr(align(N)) A-align Area: alignment control (`repr(align(N))` and so on) A-attributes Area: Attributes (`#[…]`, `#![…]`) A-repr Area: the `#[repr(stuff)]` attribute C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-low Low priority 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.
#132391 opened Oct 31, 2024 by matthiaskrgr
1
@jdonszelmann
13
rustdoc: Appearance of #[doc(hidden)] differs from all the other attributes A-attributes Area: Attributes (`#[…]`, `#![…]`) A-rustdoc-ui Area: Rustdoc UI (generated HTML) C-bug Category: This is a bug. P-low Low priority requires-nightly This issue requires a nightly compiler in some way. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#132304 opened Oct 29, 2024 by fmease
1
@poliorcetics
3
rustc_codegen_llvm should mark more of its internal methods as unsafe A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#131562 opened Oct 11, 2024 by clarfonthey
6
Miscompilation: comparing a pointer against all possible addresses returns false A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. 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 P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130388 opened Sep 15, 2024 by RalfJung
8
Error on bounds for unused lifetime A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. P-low Low priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-types Relevant to the types team, which will review and decide on the PR/issue.
#130014 opened Sep 6, 2024 by Coder-256
3
slice::Iter + max on array: Regression since Rust 1.65 (LLVM 15) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated code. llvm-fixed-upstream Issue expected to be fixed by the next major LLVM upgrade, or backported fixes P-low Low priority regression-untriaged Untriaged performance or correctness regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#129583 opened Aug 25, 2024 by seritools
7
const_heap feature can be used to leak mutable memory into final value of constant A-const-eval Area: Constant evaluation, covers all const contexts (static, const fn, ...) F-const_heap `#[feature(const_heap)]` F-const_mut_refs `#![feature(const_mut_refs)]` F-core_intrinsics Issue in the "core intrinsics" for internal usage only. P-low Low priority requires-incomplete-features This issue requires the use of incomplete features.
#129233 opened Aug 18, 2024 by RalfJung
rustdoc: ICE: Deref impl without Target type involving negative Deref impl F-negative_impls #![feature(negative_impls)] I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-low Low priority S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#128801 opened Aug 7, 2024 by fmease
@fmease
Create an internal lint for detecting "Unicode-unaware" BytePos & Span manipulations A-diagnostics Area: Messages for errors, warnings, and lints A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-Unicode Area: Unicode C-feature-request Category: A feature request, i.e: not implemented / a PR. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC D-Unicode-unaware Diagnostics: Diagnostics that are unaware of Unicode and trigger codepoint boundary assertions P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#128790 opened Aug 7, 2024 by fmease
2
ProTip! no:milestone will show everything without a milestone.