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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

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
ICE: no entry for node id: 'NodeId(53)' A-frontend Area: Compiler frontend (errors, parsing and HIR) 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-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.
#122903 opened Mar 22, 2024 by matthiaskrgr
4
Query cycle before ast lowered turns into dumpster fire A-contributor-roadblock Area: Makes things more difficult for new or seasoned contributors to Rust A-frontend Area: Compiler frontend (errors, parsing and HIR) A-query-system Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#103844 opened Nov 1, 2022 by camsteffen
If-else value followed by operator parsing error provided only for some operators A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) 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.
#91999 opened Dec 16, 2021 by ChaiTRex
3
coercions perf benchmark regressed by 3% to 14% after bidi lint addition A-frontend Area: Compiler frontend (errors, parsing and HIR) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-parser Area: The lexing & parsing of Rust source code to an AST 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. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#90514 opened Nov 2, 2021 by pnkfelix
@hkratz
3
Macro Invocations Behave Questionable Regarding Semicolons A-frontend Area: Compiler frontend (errors, parsing and HIR) 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-bug Category: This is a bug. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#70432 opened Mar 26, 2020 by steffahn
3
Syntax of rustc --cfg with key and value is obscure. A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#66450 opened Nov 15, 2019 by vext01
5
Direct users to crate-type=cdylib in crate-type=dylib documentation A-FFI Area: Foreign function interface (FFI) A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#65517 opened Oct 17, 2019 by hanna-kruppe
3
pgo: -Cprofile-use can't find file A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) A-PGO Area: Profile-guided optimizations (PGO) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-cargo Relevant to the cargo team, which will review and decide on the PR/issue. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#63609 opened Aug 15, 2019 by matthiaskrgr
8
How to treat inert attributes on macro invocations? A-frontend Area: Compiler frontend (errors, parsing and HIR) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) T-lang Relevant to the language team, which will review and decide on the PR/issue.
#63221 opened Aug 2, 2019 by petrochenkov
@petrochenkov
8
allow(deprecated) is too coarse-grained, should take a path A-attributes Area: Attributes (`#[…]`, `#![…]`) A-frontend Area: Compiler frontend (errors, parsing and HIR) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-feature-request Category: A feature request, i.e: not implemented / a PR. L-deprecated Lint: deprecated needs-rfc This change is large or controversial enough that it should have an RFC accepted before doing it. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#62398 opened Jul 5, 2019 by RalfJung
13
What is a trailing expression in a block exactly? A-frontend Area: Compiler frontend (errors, parsing and HIR) 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 T-lang Relevant to the language team, which will review and decide on the PR/issue.
#61733 opened Jun 11, 2019 by petrochenkov
@petrochenkov
18
--print=native-static-libs should behave as the other --print commands and not create output A-driver Area: rustc_driver that ties everything together into the `rustc` compiler A-frontend Area: Compiler frontend (errors, parsing and HIR) C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#61089 opened May 23, 2019 by lu-zero
1
1
Doc comments can be passed to macros as literals A-frontend Area: Compiler frontend (errors, parsing and HIR) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#61001 opened May 21, 2019 by petrochenkov
5
Inconsistent literal escaping in proc macros A-frontend Area: Compiler frontend (errors, parsing and HIR) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-proc-macros Area: Procedural macros C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#60495 opened May 3, 2019 by petrochenkov
@petrochenkov
3
Tracking issue for future-incompatbility warning 'invalid literal suffix on tuple index' (not a lint) A-frontend Area: Compiler frontend (errors, parsing and HIR) A-parser Area: The lexing & parsing of Rust source code to an AST C-future-incompatibility Category: Future-incompatibility lints C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC T-lang Relevant to the language team, which will review and decide on the PR/issue.
#60210 opened Apr 23, 2019 by nikomatsakis
1
3
Inconsistent whitespace definitions in string literals and language itself A-frontend Area: Compiler frontend (errors, parsing and HIR) A-parser Area: The lexing & parsing of Rust source code to an AST A-Unicode Area: Unicode C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#60209 opened Apr 23, 2019 by matklad
4
Move the compiler flags in the unstable book to the rustc book A-docs Area: Documentation for any part of the project, including the compiler, standard library, and tools A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#59679 opened Apr 3, 2019 by DevQps
1
Refiling "Deprecate "implicit ()" by making it a compilation error." A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-diagnostics Working group: Diagnostics
#55076 opened Oct 14, 2018 by Centril
1
Refiled: "Rustfmt/pretty-print types in error messages" A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. D-diagnostic-infra Diagnostics: Issues that affect all diagnostics, or relate to the diagnostic machinery itself. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-diagnostics Working group: Diagnostics
#54923 opened Oct 9, 2018 by Centril
Only first cap-lints argument is used A-CLI Area: Command-line interface (CLI) to the compiler A-frontend Area: Compiler frontend (errors, parsing and HIR) A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#54282 opened Sep 17, 2018 by Mark-Simulacrum
6
<Default>::default() makes the compiler very mad at me A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) A-trait-system Area: Trait system C-feature-request Category: A feature request, i.e: not implemented / a PR. 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. WG-diagnostics Working group: Diagnostics
#51077 opened May 26, 2018 by scottmcm
11
improve wording of "possible candidate is found in another module" with enums A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-diagnostics Working group: Diagnostics
#49031 opened Mar 15, 2018 by comex
3
Feature: show failure step when compilation failed due to static analysis A-diagnostics Area: Messages for errors, warnings, and lints A-frontend Area: Compiler frontend (errors, parsing and HIR) 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.
#48303 opened Feb 17, 2018 by dbkaplun
Make the way to get intel-formatted assembly from rustc more discoverable A-frontend Area: Compiler frontend (errors, parsing and HIR) C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#48011 opened Feb 5, 2018 by scottmcm
4
ProTip! Adding no:label will show everything without a label.