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Lifetime bounds of Drop aren't checked properly

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

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

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

A-NLLArea: Non-lexical lifetimes (NLL)Area: Non-lexical lifetimes (NLL)

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

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-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.

#148854 In rust-lang/rust;

· theemathas opened on Nov 12, 2025

<code>DispatchFromDyn</code> impls don't have their lifetime bounds checked

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

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

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

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

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.

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

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.

#148726 In rust-lang/rust;

· theemathas opened on Nov 9, 2025

Function arguments in nontrivial pattern can be reassigned with a different lifetime.

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.

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-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.

#148463 In rust-lang/rust;

· theemathas opened on Nov 4, 2025

<code>main()</code> returning a type that implements <code>Termination</code> with an unsatisfied lifetime bound gives a linker error

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

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

A-linkersArea: linkers... you gotta love linkersArea: linkers... you gotta love linkers

A-runtimeArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflowsArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows

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-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.

#148421 In rust-lang/rust;

· theemathas opened on Nov 3, 2025

RPIT can't capture LUB of two lifetimes

A-impl-traitArea: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch.Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch.

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

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-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.

#148401 In rust-lang/rust;

· theemathas opened on Nov 2, 2025

<code>async fn</code> can assign to argument to change its lifetime, but normal <code>fn</code> and <code>async</code> blocks cannot.

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

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

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

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-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.

#148389 In rust-lang/rust;

· theemathas opened on Nov 2, 2025

Rust shouldn't suggest using a single lifetime everywhere

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

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

D-newcomer-roadblockDiagnostics: Confusing error or lint; hard to understand for new users.Diagnostics: Confusing error or lint; hard to understand for new users.

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.

#148315 In rust-lang/rust;

· theemathas opened on Oct 31, 2025

Unsoundness due to 'static coroutines that yield non-'static values.

A-coroutinesArea: CoroutinesArea: Coroutines

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

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

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

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

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.

#144442 In rust-lang/rust;

· theemathas opened on Jul 25, 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

<code>[expr; 0]</code> ignores lifetimes

A-arrayArea: `[T; N]`Area: `[T; N]`

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

A-ZSTArea: Zero-sized types (ZSTs).Area: Zero-sized types (ZSTs).

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-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.

#144045 In rust-lang/rust;

· theemathas opened on Jul 17, 2025

closure_lifetime_binder with explicit lifetime annotation gives ICE: "cannot convert ReLateParam […] to a region vid"

A-lifetimesArea: Lifetimes / regionsArea: Lifetimes / regions

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

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

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

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.

Status: Open.

#141504 In rust-lang/rust;

· theemathas opened on May 24, 2025

Weird behavior with closure lifetime inference

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.

#47478 In rust-lang/rust;

· theemathas opened on Jan 16, 2018