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Using a reference to a self-referential static as a pattern causes stack overflow

A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)Area: Constant evaluation, covers all const contexts (static, const fn, ...)

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-bugCategory: This is a bug.Category: This is a bug.

I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#144719 In rust-lang/rust;

· theemathas opened on Jul 31, 2025

Patterns sometimes ignores lifetimes.

A-borrow-checkerArea: The borrow checkerArea: The borrow checker

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

P-highHigh priorityHigh priority

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#144312 In rust-lang/rust;

· theemathas opened on Jul 22, 2025

"binding modifiers may only be written when the default binding mode is <code>move</code>": This sentence is baffling

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

A-edition-2024Area: The 2024 editionArea: The 2024 edition

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#143557 In rust-lang/rust;

· mcclure opened on Jul 7, 2025

Incorrect span and invalid suggestion for errors from moving into pattern bindings with mixed binding modes

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

D-imprecise-spansDiagnostics: spans don't point to exactly the erroneous codeDiagnostics: spans don't point to exactly the erroneous code

D-invalid-suggestionDiagnostics: A structured suggestion resulting in incorrect code.Diagnostics: A structured suggestion resulting in incorrect code.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#143437 In rust-lang/rust;

· dianne opened on Jul 4, 2025

<code>match</code> on uninhabited type does not trigger UB in Miri

A-MIRArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.htmlArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html

A-miriArea: The miri toolArea: The miri tool

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#142394 In rust-lang/rust;

· theemathas opened on Jun 12, 2025

inconsistent drop order for pattern bindings in the presence of or-patterns

A-destructorsArea: Destructors (`Drop`, …)Area: Destructors (`Drop`, …)

A-MIRArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.htmlArea: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#142163 In rust-lang/rust;

· dianne opened on Jun 7, 2025

Should a <code>[..]</code> slice pattern constitute a discriminant read

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

A-slice-patternsArea: Slice patterns, https://github.com/rust-lang/rust/issues/23121Area: Slice patterns, https://github.com/rust-lang/rust/issues/23121

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

I-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#141825 In rust-lang/rust;

· meithecatte opened on May 31, 2025

<code>type annotations needed</code> for <code>if let Some(whatever) = todo!() {</code> not very helpful

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

A-inferenceArea: Type inferenceArea: Type inference

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

D-lack-of-suggestionDiagnostics: Adding a (structured) suggestion would increase the quality of the diagnostic.Diagnostics: Adding a (structured) suggestion would increase the quality of the diagnostic.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#141742 In rust-lang/rust;

· matthiaskrgr opened on May 29, 2025

Can't match strings in consts, but can match byte strings in consts

A-const-evalArea: Constant evaluation, covers all const contexts (static, const fn, ...)Area: Constant evaluation, covers all const contexts (static, const fn, ...)

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

A-strArea: str and StringArea: str and String

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#141231 In rust-lang/rust;

· clarfonthey opened on May 18, 2025

Destructuring tuple structs with public leading fields and private trailing fields by tuple syntax is disallowed

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-bugCategory: This is a bug.Category: This is a bug.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#139972 In rust-lang/rust;

· SOF3 opened on Apr 17, 2025

[Optimization] Significantly different assembly output for logically equivalent match patterns with string comparisons

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-slowIssue: Problems and improvements with respect to performance of generated code.Issue: Problems and improvements with respect to performance of generated code.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#139784 In rust-lang/rust;

· WindFrank opened on Apr 14, 2025

Optimize <code>const</code> pattern guards for <code>StructuralEq</code> types

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#138664 In rust-lang/rust;

· TimNN opened on Mar 18, 2025