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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

regression: error: expected identifier, found metavariable A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. I-prioritize Issue: Indicates that prioritization has been requested for this issue. 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.
#140219 opened Apr 23, 2025 by cuviper 1.87.0
5
extern "C" const unsafe fn does not trigger the "keyword order for functions declaration" note A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140171 opened Apr 22, 2025 by cyrgani
Fn(a: u8) should get a clear diagnostic A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140169 opened Apr 22, 2025 by cyrgani
@xizheyin
2
ICE: assertion failed: bpos.to_u32() >= mbc.pos.to_u32() + mbc.bytes as u32' A-borrow-checker Area: The borrow checker A-error-handling Area: Error handling A-frontend Area: Compiler frontend (errors, parsing and HIR) A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ 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.
#139089 opened Mar 28, 2025 by matthiaskrgr
3
Crash when compiling cranelift-codegen on Termux A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. O-android Operating system: Android T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138889 opened Mar 24, 2025 by licy183
3
rustc crashes with SIGSEGV when compiling a 1000 nested inline const blocks. A-parser Area: The lexing & parsing of Rust source code to an AST 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.
#138547 opened Mar 15, 2025 by aleksanderkrauze
3
Tracking issue for release notes of #134900: Fix parsing of ranges after unary operators A-parser Area: The lexing & parsing of Rust source code to an AST 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.
#137859 opened Mar 1, 2025 by rustbot 1.87.0
1
Unsupported default function parameters should have an explicit diagnostic A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#137310 opened Feb 20, 2025 by cyrgani
1
Tracking issue for release notes of #136490: Do not allow attributes on struct field rest patterns A-attributes Area: Attributes (`#[…]`, `#![…]`) A-parser Area: The lexing & parsing of Rust source code to an AST 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.
#137089 opened Feb 15, 2025 by rustbot
3 tasks
1.87.0
1
const* suggestions won't compile, and no suggestion for *const A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136602 opened Feb 5, 2025 by Rudxain
Lexer accidentally(?) does not use is_ascii_whitespace for literal whitespace in string continuations A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#136600 opened Feb 5, 2025 by hkBst
2
Bad parse error on many token sequences A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136100 opened Jan 26, 2025 by ionicmc-rs
1
Detect missing else in block with return A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST F-let_else Issues related to let-else statements (RFC 3137) P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135857 opened Jan 22, 2025 by estebank
@11happy
3
Placing an attribute on a generic argument confuses the parser A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135017 opened Jan 2, 2025 by weiznich
Terse parse error on ident @ pat in destructuring assignment A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST A-patterns Relating to patterns and pattern matching D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134778 opened Dec 26, 2024 by workingjubilee
1
Bad parse error on token sequences safe unsafe and unsafe safe A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-confusing Diagnostics: Confusing error or lint that should be reworked. D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134580 opened Dec 20, 2024 by ionicmc-rs
18
Some code suggestions failed to be shown due to span tweaking A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-debug-assertions This issue requires a build of rustc or tooling with debug-assertions 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.
#134061 opened Dec 9, 2024 by js2xxx
Add a regression test for #132587 A-parser Area: The lexing & parsing of Rust source code to an AST A-proc-macros Area: Procedural macros C-bug Category: This is a bug. E-medium Call for participation: Medium difficulty. Experience needed to fix: Intermediate. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132727 opened Nov 7, 2024 by jieyouxu
1
5
E0050 emitted unexpectedly on missing : A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-confusing Diagnostics: Confusing error or lint that should be reworked. D-papercut Diagnostics: An error or lint that needs small tweaks. D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#129273 opened Aug 19, 2024 by lolbinarycat
1
@chenyukang
1
Call stack exhaustion (overflow) in parser with a very large generated file A-cranelift Things relevant to the [future] cranelift backend A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. 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.
#128422 opened Jul 31, 2024 by sunshowers
4
ICE: attempt to subtract with overflow A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-debug-assertions This issue requires a build of rustc or tooling with debug-assertions in some way T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#127440 opened Jul 6, 2024 by matthiaskrgr
1
Migrate parser to the new span combining scheme A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-parser Area: The lexing & parsing of Rust source code to an AST C-cleanup Category: PRs that clean code up or issues documenting cleanup. E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#126763 opened Jun 20, 2024 by petrochenkov
@DanielFrantes
6
When using Box<self> in first method parameter, the error output provides the wrong type in help message A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST 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-papercut Diagnostics: An error or lint that needs small tweaks. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124657 opened May 3, 2024 by sisungo
1
Spurious “constant provided when a type was expected” upon syntax error in a generic parameter list A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-confusing Diagnostics: Confusing error or lint that should be reworked. D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124298 opened Apr 23, 2024 by kpreid
@fmease
1
Misleading error on tuple struct field with docstring A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST C-bug Category: This is a bug. D-confusing Diagnostics: Confusing error or lint that should be reworked. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue
#122463 opened Mar 14, 2024 by tbillington
3
ProTip! Exclude everything labeled bug with -label:bug.