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GATs: Decide whether to have defaults for where Self: 'a

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been triaged

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

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.

disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.This issue / PR is in PFCP or FCP with a disposition to merge it.

finished-final-comment-periodThe final comment period is finished for this PR / Issue.The final comment period is finished for this PR / Issue.

Status: Open.

#87479 In rust-lang/rust;

· nikomatsakis opened on Jul 26, 2021

Unexpected higher-ranked lifetime error in GAT usage

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-async-awaitArea: Async & AwaitArea: Async & Await

A-coroutinesArea: CoroutinesArea: Coroutines

A-higher-rankedArea: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs)Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs)

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

AsyncAwait-TriagedAsync-await issues that have been triaged during a working group meeting.Async-await issues that have been triaged during a working group meeting.

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

S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.Status: This bug is tracked inside the repo by a `known-bug` test.

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.

#100013 In rust-lang/rust;

· ethe opened on Aug 1, 2022

Yield reference in coroutine with GAT

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

A-coroutinesArea: CoroutinesArea: Coroutines

C-feature-requestCategory: A feature request, i.e: not implemented / a PR.Category: A feature request, i.e: not implemented / a PR.

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

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been triaged

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

Status: Open.

#69268 In rust-lang/rust;

· cynecx opened on Feb 18, 2020

Trait objects do not work with generic associated types

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-trait-objectsArea: trait objects, vtable layoutArea: trait objects, vtable layout

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

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been triaged

requires-nightlyThis issue requires a nightly compiler in some way.This issue requires a nightly compiler in some way.

Status: Open.

#81823 In rust-lang/rust;

· matthewjasper opened on Feb 6, 2021

GAT Self: 'a bounds break some async blocks with impl Trait

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been triaged

Status: Open.

#92096 In rust-lang/rust;

· cairijun opened on Dec 19, 2021

FnOnce with GAT argument with HRTB is misinterpreted by the type system

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

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

A-higher-rankedArea: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs)Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs)

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

D-terseDiagnostics: An error or lint that doesn't give enough information about the problem at hand.Diagnostics: An error or lint that doesn't give enough information about the problem at hand.

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.

#107572 In rust-lang/rust;

· Eliah-Lakhin opened on Feb 1, 2023

lifetime bound not satisfied for a lending iterator (using generic associated types) with for_each method

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been 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.

requires-nightlyThis issue requires a nightly compiler in some way.This issue requires a nightly compiler in some way.

Status: Open.

#91693 In rust-lang/rust;

· Imberflur opened on Dec 9, 2021

Unexpected "the parameter type X may not live long enough" error in asynchronous functions

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-async-awaitArea: Async & AwaitArea: Async & Await

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

A-trait-systemArea: Trait systemArea: Trait system

AsyncAwait-TriagedAsync-await issues that have been triaged during a working group meeting.Async-await issues that have been triaged during a working group meeting.

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

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-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.

WG-asyncWorking group: Async & awaitWorking group: Async & await

Status: Open.

#95719 In rust-lang/rust;

· wvwwvwwv opened on Apr 6, 2022

No syntactic way to specify GATs with where bounds in where clauses

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been triaged

Status: Open.

#95268 In rust-lang/rust;

· joe-hauns opened on Mar 24, 2022

Typecheck error when using a equality-constrained GAT in a trait.

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

GATs-triagedIssues using the `generic_associated_types` feature that have been triagedIssues using the `generic_associated_types` feature that have been triaged

S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.Status: This bug is tracked inside the repo by a `known-bug` test.

Status: Open.

#91762 In rust-lang/rust;

· Kimundi opened on Dec 10, 2021

Weird error messages using GATs: cannot satisfy <Self as Trait<'b>>::Assoc<'a> == '_?

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

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

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.

#89635 In rust-lang/rust;

· timothee-haudebourg opened on Oct 7, 2021

Inapplicable "add explicit lifetime bound" suggestion for trait with GAT bound

A-GATsArea: Generic associated types (GATs)Area: Generic associated types (GATs)

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

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.

#115332 In rust-lang/rust;

· detly opened on Aug 29, 2023