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Unnecessarily order dependent type inference

A-inferenceArea: Type inferenceArea: Type inference

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

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.

#108204 In rust-lang/rust;

· crlf0710 opened on Feb 18, 2023

Closure parameter lifetime inference erases hrtb

A-closuresArea: Closures (`|…| { … }`)Area: Closures (`|…| { … }`)

A-inferenceArea: Type inferenceArea: Type inference

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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.

#107589 In rust-lang/rust;

· pigeonhands opened on Feb 2, 2023

Types should be inferrable across bit boolean operators

A-inferenceArea: Type inferenceArea: Type inference

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.

#107556 In rust-lang/rust;

· tgross35 opened on Feb 1, 2023

relating higher-ranked projections can unexpectedly constrain inference

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-inferenceArea: Type inferenceArea: Type inference

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

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

P-mediumMedium priorityMedium 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.

#107268 In rust-lang/rust;

· aliemjay opened on Jan 24, 2023

Surprising type inference failure around "as"

A-inferenceArea: Type inferenceArea: Type inference

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

Status: Open.

#106672 In rust-lang/rust;

· RalfJung opened on Jan 10, 2023

<code>[async block]: Future&lt;Output = Ty&gt;</code> obligations don't provide inference guidance

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

A-inferenceArea: Type inferenceArea: Type inference

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.

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.

#106527 In rust-lang/rust;

· compiler-errors opened on Jan 6, 2023

<code>cannot infer type</code> when expression is logically negated in closure

A-closuresArea: Closures (`|…| { … }`)Area: Closures (`|…| { … }`)

A-inferenceArea: Type inferenceArea: Type inference

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.

#106138 In rust-lang/rust;

· Isopod opened on Dec 25, 2022

Type annotations needed for type alias that refers to associated type on trait

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

A-inferenceArea: Type inferenceArea: Type inference

A-trait-systemArea: Trait systemArea: Trait system

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

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.

#105680 In rust-lang/rust;

· thomaseizinger opened on Dec 14, 2022

Unhelpful "type annotations needed" when it seems like rustc should know the type

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

A-inferenceArea: Type inferenceArea: Type inference

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.

#105029 In rust-lang/rust;

· keysmashes opened on Nov 28, 2022

Rust attemts to implement FnMut for a closure consuming a <code>'static mut</code> reference?

A-closuresArea: Closures (`|…| { … }`)Area: Closures (`|…| { … }`)

A-inferenceArea: Type inferenceArea: Type inference

Status: Open.

#104837 In rust-lang/rust;

· rMazeiks opened on Nov 24, 2022

"ambiguous associated type" when accessing concrete type (but not on generic type)

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

A-inferenceArea: Type inferenceArea: Type inference

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.

#104119 In rust-lang/rust;

· RalfJung opened on Nov 7, 2022

Unrelated trait bounds prevents generic types to be inferred in function call.

A-inferenceArea: Type inferenceArea: Type inference

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

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.

#102939 In rust-lang/rust;

· RikardLegge opened on Oct 11, 2022