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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

Malformed suggestion for E0061 when in macro context and method is a macro token A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) 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.
#140512 opened Apr 30, 2025 by nagisa
1
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
ICE: Special char (like RTL(U+202E)) in comment for value in vec! would cause ICE if not add #[allow(text_direction_codepoint_in_literal)] A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. 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) ❄️ L-text_direction_codepoint_in_literal Lint: text_direction_codepoint_in_literal T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140281 opened Apr 25, 2025 by wychlw
@matthewjasper
1
Add support for repetition to proc_macro::quote A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-proc-macros Area: Procedural macros C-feature-request Category: A feature request, i.e: not implemented / a PR. E-help-wanted Call for participation: Help is requested to fix this issue. E-medium Call for participation: Medium difficulty. Experience needed to fix: Intermediate. T-libs Relevant to the library team, which will review and decide on the PR/issue. WG-macros Working group: Macros
#140238 opened Apr 24, 2025 by tgross35
3
Incorrect '&'-reference removal A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) 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.
#140166 opened Apr 22, 2025 by adi-joshi
@xizheyin
2
Missing use std::fmt::Write; with write!: rustc suggests editing the sysroot A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` 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.
#139830 opened Apr 15, 2025 by Sky9x
1
1
cargo fix --edition failed: error: expected item after attributes A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. F-precise_capturing `#![feature(precise_capturing)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139567 opened Apr 9, 2025 by eval-exec
Creeping macro expansion - possible exponential time? A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) 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 I-hang Issue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139306 opened Apr 3, 2025 by matthiasbeyer
2
Inappropriate suggestion when mismatched types occur in the dbg! macro A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139253 opened Apr 2, 2025 by jjl9807
2
@xizheyin
2
Misleading diagnostic for error[E0277] A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139251 opened Apr 2, 2025 by jjl9807
1
Confusing suggestions for error[E0599]: cannot write into String A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) 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.
#139051 opened Mar 28, 2025 by jjl9807
2
1
Misleading compiler suggestion: Add semicolon in rustlib due to missing ; in user code A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) 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.
#139049 opened Mar 28, 2025 by jjl9807
1
@xizheyin
2
#![no_implicit_prelude] does not disable macros A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-maybe-future-edition Something we may consider for a future edition. C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-edition Relevant to the edition team. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#138756 opened Mar 20, 2025 by kpreid
3
Confusing error "the trait bound u8: Termination is not satisfied" when duplicated function is marked as #[test] A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. 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.
#138367 opened Mar 11, 2025 by karolzwolak
1
False-positive unused_parens missing macro cases A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) L-false-positive Lint: False positive (should not have fired). L-unused_parens Lint: unused_parens T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138234 opened Mar 8, 2025 by MultisampledNight
1
Using ${index()} inside ${concat()} fails with "expected identifier or string literal" error A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-feature-request Category: A feature request, i.e: not implemented / a PR. F-macro_metavar_expr_concat `#![feature(macro_metavar_expr_concat)]` F-macro_metavar_expr `#![feature(macro_metavar_expr)]` T-lang Relevant to the language team, which will review and decide on the PR/issue.
#138181 opened Mar 7, 2025 by MonterraByte
1
Nested macro_rules and edition spans A-hygiene Area: Macro hygiene A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-edition Relevant to the edition team. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#137031 opened Feb 14, 2025 by ehuss
4
Suggested fix for "cannot find macro ... in this scope" does not compile A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) 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. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136140 opened Jan 27, 2025 by rusty-snake
1
E0308 Suggestion gets added to unrelated code and error span is too big A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-imprecise-spans Diagnostics: spans don't point to exactly the erroneous code T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134445 opened Dec 17, 2024 by LasterAlex
Compiling #[derive(Debug)] enum + dbg! is quadratic with enum variants A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. I-compiletime Issue: Problems and improvements with respect to compile times. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133945 opened Dec 6, 2024 by theemathas
3
Bad + use<> suggestion in nested macro_rules A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-impl_trait_overcaptures Lint: impl_trait_overcaptures T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133769 opened Dec 2, 2024 by ehuss
2
keyword-idents is incompatible with macros A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-keyword_idents Lint group: keyword_idents L-keyword_idents_2024 Lint: keyword_idents_2024 T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133709 opened Dec 1, 2024 by ehuss
1
non-#[macro_export]'ed macro_rules! macros are impossible to disambiguate from built-in attributes in use declarations A-attributes Area: Attributes (`#[…]`, `#![…]`) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#133708 opened Dec 1, 2024 by kanashimia
2
Unexpected warning when doc string invokes a macro which is defined within the same module A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-resolve Area: Name/path resolution done by `rustc_resolve` specifically C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133656 opened Nov 30, 2024 by rami3l
3
#[derive(Debug)] on #[repr(packed)] enum causes internal compiler error A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-repr-packed Area: the naughtiest repr 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.
#133025 opened Nov 14, 2024 by urinacon
8
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