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Issues list

SIGILL when compiling cc with -C instrument-coverage -Z coverage-options=mcdc A-code-coverage Area: Source-based code coverage (-Cinstrument-coverage) C-bug Category: This is a bug. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example 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.
#140677 opened May 5, 2025 by esarver
5
[Polonius] Timeout while compiling handcrafted example C-bug Category: This is a bug. I-compiletime Issue: Problems and improvements with respect to compile times. NLL-polonius Issues related for using Polonius in the borrow checker 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.
#140454 opened Apr 29, 2025 by usx95
ICE: try_lower_anon_const_lit: received const param which shouldn't be possible with generic_const_exprs 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) ❄️ 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. S-has-bisection Status: A bisection has been found for this issue 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.
#140275 opened Apr 25, 2025 by wychlw
1
false positive "unconstrained opaque type" error on impl trait in trait associated type C-bug Category: This is a bug. F-impl_trait_in_assoc_type `#![feature(impl_trait_in_assoc_type)]` requires-nightly This issue requires a nightly compiler in some way. T-types Relevant to the types team, which will review and decide on the PR/issue.
#140222 opened Apr 23, 2025 by glorv
2
if multiple -Z allow-features are passed, only the last is used A-CLI Area: Command-line interface (CLI) to the compiler C-bug Category: This is a bug. 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.
#139947 opened Apr 17, 2025 by jyn514
2
rustdoc: doctest-xcompile passes when it shouldn't A-cross Area: Cross compilation A-doctests Area: Documentation tests, run by rustdoc C-bug Category: This is a bug. 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.
#139924 opened Apr 16, 2025 by bugadani
2
-Zunpretty=expanded no longer emitting #[cfg(feature = xxx)] guards? A-pretty Area: Pretty printing (including `-Z unpretty`) C-bug Category: This is a bug. 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.
#139715 opened Apr 12, 2025 by cpu
3
ICE: stack overflow with -Ztyping-mode-borrowck in inference 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. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. requires-nightly This issue requires a nightly compiler in some way. 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.
#139446 opened Apr 6, 2025 by matthiaskrgr
1
ICE: encountered a fresh type during canonicalization A-dyn-trait Area: trait objects, vtable layout 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. F-trait_alias `#![feature(trait_alias)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. S-has-bisection Status: A bisection has been found for this issue 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. T-types Relevant to the types team, which will review and decide on the PR/issue.
#138891 opened Mar 24, 2025 by matthiaskrgr
@compiler-errors
3
unresolved symbol rdl_oom when compiling cdylib crate with no_global_oom_handling on pc-windows-msvc target -Zbuild-std Unstable Cargo option: Compile the standard library yourself. A-allocators Area: Custom and system allocators A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. O-windows-msvc Toolchain: MSVC, Operating system: Windows 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. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#138758 opened Mar 20, 2025 by wmmc88
3
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
ICE using repr(align(…)) type as trait object receiver (arbitrary self-type) A-dyn-trait Area: trait objects, vtable layout A-layout Area: Memory layout of types C-bug Category: This is a bug. F-arbitrary_self_types `#![feature(arbitrary_self_types)]` F-dispatch_from_dyn `#![feature(dispatch_from_dyn)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ 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.
#138564 opened Mar 16, 2025 by steffahn
1
rustdoc --test does not respect -Zcrate-attr -Zcrate-attr Unstable option: -Zcrate-attr A-attributes Area: Attributes (`#[…]`, `#![…]`) A-CLI Area: Command-line interface (CLI) to the compiler C-bug Category: This is a bug. 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.
#138491 opened Mar 14, 2025 by tamird
2
CopyProp miscompilation when src is moved more than once A-mir-opt Area: MIR optimizations 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 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.
#137936 opened Mar 3, 2025 by tmiasko
2
Overflow evaluating the requirement on associated_type_defaults bounded on the field it's being assigned A-trait-system Area: Trait system C-bug Category: This is a bug. F-associated_type_defaults `#![feature(associated_type_defaults)]` 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.
#137434 opened Feb 22, 2025 by udoprog
Projecting into non-power-of-two-lanes repr(simd) types does the wrong thing. A-SIMD Area: SIMD (Single Instruction Multiple Data) requires-nightly This issue requires a nightly compiler in some way.
#137108 opened Feb 16, 2025 by scottmcm
@scottmcm
2
-Z meta-stats + RUSTC_LOG=info ICEs on next build A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. S-has-bisection Status: A bisection has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135935 opened Jan 23, 2025 by klensy
2
#[thread_local] alignment broken on Windows, GNU ABI A-thread-locals Area: Thread local storage (TLS) C-bug Category: This is a bug. F-thread_local `#![feature(thread_local)]` I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-windows-gnu Toolchain: GNU, Operating system: Windows 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.
#135719 opened Jan 19, 2025 by purplesyringa
16
rust-lld: error: undefined symbol: __gxx_personality_v0 A-linkage Area: linking into static, shared libraries and binaries A-linkers Area: linkers... you gotta love linkers C-bug Category: This is a bug. regression-untriaged Untriaged performance or correctness regression. requires-nightly This issue requires a nightly compiler in some way. 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.
#135257 opened Jan 8, 2025 by hasenbanck
3
Precise captures in ITIAT are not refining A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. F-impl_trait_in_assoc_type `#![feature(impl_trait_in_assoc_type)]` requires-nightly This issue requires a nightly compiler in some way. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-types Relevant to the types team, which will review and decide on the PR/issue.
#135144 opened Jan 6, 2025 by QuineDot
2
Const generic equivalence check overrides diagnostic::on_unimplemented A-diagnostics Area: Messages for errors, warnings, and lints F-generic_const_exprs `#![feature(generic_const_exprs)]` 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.
#134881 opened Dec 29, 2024 by juntyr
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
rustdoc: ICE: Cannot turn UnevaluatedConst into AliasTy when synthesizing auto trait impls A-auto-traits Area: auto traits (e.g., `auto trait Send {}`) A-synthetic-impls Area: Synthetic impls, used by rustdoc to document auto traits and traits with blanket impls C-bug Category: This is a bug. F-associated_const_equality `#![feature(associated_const_equality)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. 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.
#134775 opened Dec 26, 2024 by sigurd4
1 of 4 tasks
@fmease
2
Scoped TLS panic when making docs with --markdown-before-content C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. 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.
#134322 opened Dec 15, 2024 by sylbeth
3
The combination of alloc_error_handler and target_features_11 is unsound C-bug Category: This is a bug. F-target_feature_11 target feature 1.1 RFC 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-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134234 opened Dec 12, 2024 by veluca93
ProTip! What’s not been updated in a month: updated:<2025-04-22.