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Issues: rust-lang/rust

Draft release notes for 1.87
#140133 opened Apr 21, 2025 by BoxyUwU
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Issues list

"Unused" associated type bounds in dyn no longer parameterize the type A-dyn-trait Area: trait objects, vtable layout 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-from-stable-to-beta Performance or correctness regression from stable to beta. T-types Relevant to the types team, which will review and decide on the PR/issue.
#140645 opened May 4, 2025 by QuineDot
ICE: expected a const, but found a type C-bug Category: This is a bug. F-min_generic_const_args `#![feature(min_generic_const_args)]` 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.
#140642 opened May 4, 2025 by matthiaskrgr
tests/ui/debuginfo/debuginfo-type-name-layout-ice-94961-2.rs emits "values of the type [u8; usize::MAX] are too big for the target architecture" differently A-debuginfo Area: Debugging information in compiled programs (DWARF, PDB, etc.) A-testsuite Area: The testsuite used to check the correctness of rustc C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140620 opened May 3, 2025 by jieyouxu
regression: ICE: expr in place where literal is expected (builtin attr parsing) A-attributes Area: Attributes (`#[…]`, `#![…]`) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-critical Critical 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.
#140612 opened May 3, 2025 by jieyouxu 1.87.0
@fmease
6
transmutability: high memory unsage for types containing references C-bug Category: This is a bug. F-transmutability `#![feature(transmutability)]` I-compilemem Issue: Problems and improvements with respect to memory usage during compilation. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140610 opened May 3, 2025 by tmiasko
ICE Unevaluated ty::Const in MIR body C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` F-with_negative_coherence `#![feature(with_negative_coherence)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140609 opened May 3, 2025 by matthiaskrgr
Mismatch between sync and async drop gen? A-const-eval Area: Constant evaluation, covers all const contexts (static, const fn, ...) 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.
#140600 opened May 2, 2025 by lovely-error
4
closures in dead code are no longer borrowchecked A-borrow-checker Area: The borrow checker C-bug Category: This is a bug. P-critical Critical priority 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.
#140583 opened May 2, 2025 by ginnyTheCat
1
@lcnr
2
ICE: next solver: failed to resolve instance for <e<FilterFn<{[email protected]:31:15: 31:17}> 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. 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. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140577 opened May 2, 2025 by matthiaskrgr
4
ICE: normalization_nested_goals.is_empty() 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) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140571 opened May 2, 2025 by matthiaskrgr
1
Need comprehensive story for target_feature compat A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. E-needs-design This issue needs exploration and design to see how and if we can fix/implement it T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140570 opened May 2, 2025 by workingjubilee
1
member constraints are order-dependent A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-NLL Area: Non-lexical lifetimes (NLL) C-bug Category: This is a bug. T-types Relevant to the types team, which will review and decide on the PR/issue.
#140569 opened May 2, 2025 by lcnr
@lcnr
ICE: Failed to normalize *mut std::pin::Pin<std::boxed::Box<Alias(Projection, AliasTy { args: [impl AsyncFnOnce().. C-bug Category: This is a bug. F-async_drop `#![feature(async_drop)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-incomplete-features This issue requires the use of incomplete features. 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.
#140531 opened Apr 30, 2025 by matthiaskrgr
1
ICE: encountered Assign((_0, const false)) with incompatible types: left-hand side has type: std::task::Poll<std::option::Option<()>> right-hand side has type: bool C-bug Category: This is a bug. F-async_drop `#![feature(async_drop)]` F-gen_blocks `gen {}` expressions that produce `Iterator`s I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140530 opened Apr 30, 2025 by matthiaskrgr
GAT code doesn't compile when plug in the type directly A-GATs Area: Generic associated types (GATs) 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.
#140517 opened Apr 30, 2025 by Y-jiji
4
mul_add on *-pc-windows-gnu returns incorrect results A-floating-point Area: Floating point numbers and arithmetic C-bug Category: This is a bug. 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 P-medium Medium priority 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.
#140515 opened Apr 30, 2025 by beetrees
20
rustc build crash C-bug Category: This is a bug. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140508 opened Apr 30, 2025 by lrobot
4
ICE: type parameter impl Sized/#0 (impl Sized/#0/0) out of range when instantiating, args=[] C-bug Category: This is a bug. F-async_drop `#![feature(async_drop)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-incomplete-features This issue requires the use of incomplete features. 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.
#140500 opened Apr 30, 2025 by matthiaskrgr
1
async-drop-initial.rs test failing on Fuchsia A-async-await Area: Async & Await A-testsuite Area: The testsuite used to check the correctness of rustc C-bug Category: This is a bug. F-async_drop `#![feature(async_drop)]` O-fuchsia Operating system: Fuchsia T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140493 opened Apr 30, 2025 by erickt
2
Panic backtrace on Arm64 Windows is truncated A-backtrace Area: Backtraces A-panic Area: Panicking machinery A-runtime Area: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows C-bug Category: This is a bug. O-Arm Target: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state O-windows Operating system: Windows
#140489 opened Apr 29, 2025 by dpaoliello
@dpaoliello
3
ICE: unexpected sort of node in fn_sig(): ImplItem(ImplItem C-bug Category: This is a bug. F-async_drop `#![feature(async_drop)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-incomplete-features This issue requires the use of incomplete features. 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.
#140484 opened Apr 29, 2025 by matthiaskrgr
1
ICE: expand: unimplemented A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. F-macro_metavar_expr `#![feature(macro_metavar_expr)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ 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.
#140479 opened Apr 29, 2025 by matthiaskrgr
3
reconsider "the way to run a crate's unit tests is x test <crate>" C-bug Category: This is a bug. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
#140478 opened Apr 29, 2025 by jyn514
2
ICE：called Option::unwrap() on a None value A-async-await Area: Async & Await A-const-prop Area: Constant propagation C-bug Category: This is a bug. F-async_drop `#![feature(async_drop)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-incomplete-features This issue requires the use of incomplete features. 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.
#140469 opened Apr 29, 2025 by sososopy
1
Non-implemented trait causes ICE C-bug Category: This is a bug. 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. 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.
#140462 opened Apr 29, 2025 by dpytaylo
@compiler-errors
3
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