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Parameter usage is not properly propagated through trait aliases

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

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

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.

#74093 In rust-lang/rust;

· vandenheuvel opened on Jul 6, 2020

Error in specialization type checking when using trait aliases

A-specializationArea: Trait impl specializationArea: Trait impl specialization

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

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

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

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

Status: Open.

#74809 In rust-lang/rust;

· jsmith628 opened on Jul 27, 2020

RFC #1733 (Trait Aliases): use of lifetime parameter in trait alias not detected

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

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

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

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.

Status: Open.

#127725 In rust-lang/rust;

· ilonachan opened on Jul 14, 2024

RFC #1733 (Trait Aliases): compilation crash when putting "diagnostic::on_unimplemented" on alias

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

F-on_unimplementedError messages that can be tackled with `#[rustc_on_unimplemented]`Error messages that can be tackled with `#[rustc_on_unimplemented]`

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

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

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-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.

#130627 In rust-lang/rust;

· andrzejressel opened on Sep 20, 2024

The bounds information of associated types is not propagated correctly when used with trait aliases.

A-trait-systemArea: Trait systemArea: Trait system

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

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

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

#68210 In rust-lang/rust;

· wdanilo opened on Jan 14, 2020

Compiler wants to add bound which already exists to generic.

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-trait-systemArea: Trait systemArea: Trait system

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

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

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.

fixed-by-next-solverFixed by the next-generation trait solver, `-Znext-solver`.Fixed by the next-generation trait solver, `-Znext-solver`.

Status: Open.

#123513 In rust-lang/rust;

· meltah opened on Apr 5, 2024

Hang from infinitely-self-recursive trait alias

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

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

I-hangIssue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc.Issue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc.

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this 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-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.

#133901 In rust-lang/rust;

· wxie7 opened on Dec 5, 2024

Fix trait_ref_to_existential as trait aliases is stabilized

A-dyn-compatibilityArea: Dyn compatibility (formerly: object safety)Area: Dyn compatibility (formerly: object safety)

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

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

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

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.

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

Status: Open.

#66420 In rust-lang/rust;

· estebank opened on Nov 14, 2019

Tracking issue for trait aliases

A-trait-systemArea: Trait systemArea: Trait system

B-RFC-approvedBlocker: Approved by a merged RFC but not yet implemented.Blocker: Approved by a merged RFC but not yet implemented.

B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.

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-trait_alias`#![feature(trait_alias)]``#![feature(trait_alias)]`

S-tracking-needs-summaryStatus: It's hard to tell what's been done and what hasn't! Someone should do some investigation.Status: It's hard to tell what's been done and what hasn't! Someone should do some investigation.

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.

#41517 In rust-lang/rust;

· withoutboats opened on Apr 24, 2017

Trait aliases make it possible to sidestep various syntactic trait bound checks

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

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

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.

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

Status: Open.

#135342 In rust-lang/rust;

· fmease opened on Jan 10, 2025