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Issues list

Unsized types in required trait methods A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-trait-objects Area: trait objects, vtable layout C-feature-request Category: A feature request, i.e: not implemented / a PR. needs-rfc This change is large or controversial enough that it should have an RFC accepted before doing it. T-lang Relevant to the language team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#134475 opened Dec 18, 2024 by ionicmc-rs
9
Invalid suggestion for AsyncFnOnce trait object A-diagnostics Area: Messages for errors, warnings, and lints A-trait-objects Area: trait objects, vtable layout F-async_closure `#![feature(async_closure)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134182 opened Dec 11, 2024 by ehuss
@compiler-errors
1
rustdoc-json: impl dyn Trait gets discarded A-rustdoc-json Area: Rustdoc JSON backend A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#133719 opened Dec 1, 2024 by aDotInTheVoid
1
Coherence with object types with overlapping supertrait projections is incomplete A-coherence Area: Coherence A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness P-high High priority T-types Relevant to the types team, which will review and decide on the PR/issue.
#133361 opened Nov 23, 2024 by compiler-errors
1
@compiler-errors
3
dyn AsyncFn generates many independent errors A-diagnostics Area: Messages for errors, warnings, and lints A-trait-objects Area: trait objects, vtable layout D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. F-async_closure `#![feature(async_closure)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132713 opened Nov 6, 2024 by cramertj
1
@cramertj
1
regression: Compiler error with dyn + for<'a> A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-types Relevant to the types team, which will review and decide on the PR/issue.
#132000 opened Oct 21, 2024 by ABorgna 1.83.0
3
projecting to assoc type of supertrait that is implemented differently for trait object goes wrong A-associated-items Area: Associated items (types, constants & functions) A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness requires-nightly This issue requires a nightly compiler in some way. T-types Relevant to the types team, which will review and decide on the PR/issue.
#131891 opened Oct 18, 2024 by lukas-code
@compiler-errors
4
GAT type Assoc<T: ?Sized> implicitly requires Self to be 'static A-borrow-checker Area: The borrow checker A-diagnostics Area: Messages for errors, warnings, and lints A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#131008 opened Sep 29, 2024 by Veetaha
4
Unhelpful error message "ambiguous lifetime bound, explicit lifetime bound required" A-diagnostics Area: Messages for errors, warnings, and lints A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130952 opened Sep 27, 2024 by oberien
1
ICE: "error performing operation: fully_perform" on type inference for trait object with HRTB over GAT A-GATs Area: Generic associated types (GATs) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout A-trait-system Area: Trait system C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130797 opened Sep 24, 2024 by arvidfm
1
ICE: broken MIR: NoSolution on HRTB over GAT in trait object A-GATs Area: Generic associated types (GATs) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout A-trait-system Area: Trait system C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130524 opened Sep 18, 2024 by arvidfm
3
Permit trait object types where all (non-generic) associated constants are specified (via assoc item bindings) A-dyn-compatibility Area: Dyn compatibility (formerly: object safety) A-trait-objects Area: trait objects, vtable layout C-feature-request Category: A feature request, i.e: not implemented / a PR. F-associated_const_equality `#![feature(associated_const_equality)]` requires-nightly This issue requires a nightly compiler in some way. S-blocked Status: Blocked on something else such as an RFC or other implementation work. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#130300 opened Sep 13, 2024 by fmease
@fmease
RPITIT "captures lifetime that does not appear in bounds" A-diagnostics Area: Messages for errors, warnings, and lints A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-trait-objects Area: trait objects, vtable layout A-trait-system Area: Trait system C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#128752 opened Aug 6, 2024 by tmandry
8
Can't cast a pointer of a trait object newtype to a pointer of that trait object. A-raw-pointers Area: raw pointers, MaybeUninit, NonNull A-trait-objects Area: trait objects, vtable layout C-discussion Category: Discussion or questions that doesn't represent real issues. T-types Relevant to the types team, which will review and decide on the PR/issue.
#128625 opened Aug 4, 2024 by theemathas
1
RFC #1733 (Trait Aliases): use of lifetime parameter in trait alias not detected A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. F-trait_alias `#![feature(trait_alias)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#127725 opened Jul 14, 2024 by ilonachan
2
Tracking issue for future-incompatibility lint ptr_cast_add_auto_to_object A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-raw-pointers Area: raw pointers, MaybeUninit, NonNull A-trait-objects Area: trait objects, vtable layout C-future-incompatibility Category: Future-incompatibility lints C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#127323 opened Jul 4, 2024 by WaffleLapkin
2
*x == *y for trait objects produce move error, so it is not equivalent to PartialEq::eq(&*x, &*y) even though the reference says it is A-borrow-checker Area: The borrow checker A-diagnostics Area: Messages for errors, warnings, and lints A-docs Area: documentation for any part of the project, including the compiler, standard library, and tools A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#127215 opened Jul 1, 2024 by estebank
4
Associated function from super traits not accessible via sub traits A-associated-items Area: Associated items (types, constants & functions) A-diagnostics Area: Messages for errors, warnings, and lints A-resolve Area: Name/path resolution done by `rustc_resolve` specifically A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124438 opened Apr 27, 2024 by WaffleLapkin
3
ICE: error performing operation: fully_perform A-associated-items Area: Associated items (types, constants & functions) A-trait-objects Area: trait objects, vtable layout A-trait-system Area: Trait system C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#124189 opened Apr 20, 2024 by cushionbadak
4
ICE: unexpected infer type A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. F-associated_const_equality `#![feature(associated_const_equality)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#123140 opened Mar 27, 2024 by matthiaskrgr
@fmease
4
Confusing message for inferred trait object lifetime A-diagnostics Area: Messages for errors, warnings, and lints A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#117600 opened Nov 5, 2023 by pie-flavor
Compilation Hang and Memory Exhaustion When Compiling Code with Associated Type and Trait Objects A-associated-items Area: Associated items (types, constants & functions) A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. F-impl_trait_in_assoc_type `#![feature(impl_trait_in_assoc_type)]` fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. I-hang Issue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#117275 opened Oct 27, 2023 by iamanonymouscs
3
Object lifetime defaults of GATs are not respected A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#115379 opened Aug 30, 2023 by fmease
1
@fmease
4
trait object: specific use case of variance and/or coercion A-DSTs Area: Dynamically-sized types (DSTs) A-trait-objects Area: trait objects, vtable layout A-trait-system Area: Trait system C-bug Category: This is a bug. D-confusing Diagnostics: Confusing error or lint that should be reworked. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#108999 opened Mar 10, 2023 by plafer
6
dyn Trait<'a> shouldn't carry 'a lifetime A-lifetimes Area: Lifetimes / regions A-trait-objects Area: trait objects, vtable layout C-discussion Category: Discussion or questions that doesn't represent real issues. T-types Relevant to the types team, which will review and decide on the PR/issue.
#104684 opened Nov 21, 2022 by yshui
5
ProTip! Adding no:label will show everything without a label.