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Tracking Issue for reflection

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

#142577 In rust-lang/rust;

· oli-obk opened on Jun 16, 2025

Tracking Issue for generic pattern types

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

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

T-langRelevant to the language teamRelevant to the language team

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.

#136574 In rust-lang/rust;

· oli-obk opened on Feb 5, 2025

Replace <code>rustc_layout_scalar_valid_range_start</code> attribute with pattern types

F-pattern_types`#![feature(pattern_types)]``#![feature(pattern_types)]`

Status: Open.

#135996 In rust-lang/rust;

· oli-obk opened on Jan 24, 2025

Give recursion limit errors a span

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

E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.

Status: Open.

#135629 In rust-lang/rust;

· oli-obk opened on Jan 17, 2025

<code>instruction_set</code> attribute can be applied to anything

A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)

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.

#128489 In rust-lang/rust;

· oli-obk opened on Aug 1, 2024

<code>optimize</code> attribute can be applied to anything

A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)

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

F-optimize_attribute`#![feature(optimize_attribute)]``#![feature(optimize_attribute)]`

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.

#128488 In rust-lang/rust;

· oli-obk opened on Aug 1, 2024

Help needed finding a test that changes behaviour when changing DefiningOpaqueTypes::No to Yes

A-trait-systemArea: Trait systemArea: Trait system

E-help-wantedCall for participation: Help is requested to fix this issue.Call for participation: Help is requested to fix this issue.

Status: Open.

#127035 In rust-lang/rust;

· oli-obk opened on Jun 27, 2024

Unhelpful <code>type annotations needed</code> when calling method on result of index op

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

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.

#125924 In rust-lang/rust;

· oli-obk opened on Jun 3, 2024

Tracking Issue for pattern types

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

F-pattern_types`#![feature(pattern_types)]``#![feature(pattern_types)]`

S-tracking-perma-unstableStatus: The feature will stay unstable indefinitely.Status: The feature will stay unstable indefinitely.

T-langRelevant to the language teamRelevant to the language team

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.

#123646 In rust-lang/rust;

· oli-obk opened on Apr 8, 2024

Tracking Issue for Packages as (optional) namespaces

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

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

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-crates-ioRelevant to the crates.io team, which will review and decide on the PR/issue.Relevant to the crates.io team, which will review and decide on the PR/issue.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#122349 In rust-lang/rust;

· oli-obk opened on Mar 11, 2024

Tracking Issue for the <code>Freeze</code> trait

B-experimentalBlocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

F-freeze`#![feature(freeze)]``#![feature(freeze)]`

T-langRelevant to the language teamRelevant to the language team

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#121675 In rust-lang/rust;

· oli-obk opened on Feb 27, 2024

silence not helpful follow-up errors

C-cleanupCategory: PRs that clean code up or issues documenting cleanup.Category: PRs that clean code up or issues documenting cleanup.

Status: Open.

#117514 In rust-lang/rust;

· oli-obk opened on Nov 2, 2023