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Issues list

compiler trait solver gets stuck (infinite loop or tail recursion?), related to GAT and associated type equality constraint A-GATs Area: Generic associated types (GATs) C-bug Category: This is a bug. 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-types Relevant to the types team, which will review and decide on the PR/issue.
#134370 opened Dec 16, 2024 by nerditation
3
compare_method_predicate_entailment is missing implied bounds from higher-ranked GAT A-GATs Area: Generic associated types (GATs) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) A-implied-bounds Area: Implied bounds / inferred outlives-bounds A-trait-system Area: Trait system C-bug Category: This is a bug. T-types Relevant to the types team, which will review and decide on the PR/issue.
#133805 opened Dec 3, 2024 by compiler-errors
Variance not computed for concrete GAT references in struct fields A-GATs Area: Generic associated types (GATs) A-variance Area: Variance (https://doc.rust-lang.org/nomicon/subtyping.html) 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.
#132198 opened Oct 26, 2024 by branchseer
1
Broken MIR in DefId (TerminatorKind::Call with GATs) A-GATs Area: Generic associated types (GATs) 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.
#131373 opened Oct 7, 2024 by racharron
2
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
error[E0275]: overflow evaluating the requirement <RefTFamily<T> as LifetimizedOutputFamily>::Output<'a> == _ A-GATs Area: Generic associated types (GATs) 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.
#130728 opened Sep 23, 2024 by JohnScience
1
Compiler freezes on trait with generic associated type A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) A-lifetimes Area: Lifetimes / regions 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-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.
#130640 opened Sep 20, 2024 by antonilol
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
ICE with higher order associated types A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) 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.
#129372 opened Aug 21, 2024 by LHolten
7
Unable to see through associated type with where clause on GAT A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) 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`. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#122745 opened Mar 19, 2024 by benluelo
2
Compiler indefinitely takes resources when HRTB is used in conjunction with lifetime in 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-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-compilemem Issue: Problems and improvements with respect to memory usage during compilation. 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.
#121821 opened Feb 29, 2024 by dodomorandi
2
HRTB and GAT problem A-GATs Area: Generic associated types (GATs) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) C-bug Category: This is a bug. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue 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.
#121437 opened Feb 22, 2024 by davidli2010
4
ICE: Broken MIR: NoSolution A-GATs Area: Generic associated types (GATs) A-lifetimes Area: Lifetimes / regions A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-bug Category: This is a bug. 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. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#120811 opened Feb 8, 2024 by antiguru
6
Failure to assume GAT normalization holds when proving GAT bounds in impl A-GATs Area: Generic associated types (GATs) F-associated_type_defaults `#![feature(associated_type_defaults)]` T-types Relevant to the types team, which will review and decide on the PR/issue.
#117606 opened Nov 5, 2023 by compiler-errors
1
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
Inapplicable "add explicit lifetime bound" suggestion for trait with GAT bound A-diagnostics Area: Messages for errors, warnings, and lints A-GATs Area: Generic associated types (GATs) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#115332 opened Aug 29, 2023 by detly
GAT lifetime tricky A-diagnostics Area: Messages for errors, warnings, and lints A-GATs Area: Generic associated types (GATs) A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug.
#112764 opened Jun 18, 2023 by crlf0710
2
Overflow evaluating the requirement when using GATs A-GATs Area: Generic associated types (GATs) C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#112097 opened May 30, 2023 by momvart
2
error: X does not live long enough doesn't provide enough context A-async-await Area: Async & Await A-diagnostics Area: Messages for errors, warnings, and lints A-GATs Area: Generic associated types (GATs) A-lifetimes Area: Lifetimes / regions AsyncAwait-Triaged Async-await issues that have been triaged during a working group meeting. C-bug Category: This is a bug. D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue
#111852 opened May 22, 2023 by frederikhors
4
Trait implementation implies trait bounds for associated types but not for GAT associated types A-GATs Area: Generic associated types (GATs) A-implied-bounds Area: Implied bounds / inferred outlives-bounds C-bug Category: This is a bug.
#111158 opened May 3, 2023 by inanna-malick
1
Unable to resolve HRTB/GAT lifetimes trait bounds 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-system Area: Trait system C-bug Category: This is a bug. S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-types Relevant to the types team, which will review and decide on the PR/issue.
#110136 opened Apr 10, 2023 by StefanUlbrich
Incorrect unused_braces when a proc macro is applied to a GAT type conversion A-GATs Area: Generic associated types (GATs) A-proc-macros Area: Procedural macros C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#109473 opened Mar 22, 2023 by teor2345
Compilation stop when referring to GAT of Self in where clause of trait implementation A-GATs Area: Generic associated types (GATs) C-bug Category: This is a bug. 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.
#109279 opened Mar 17, 2023 by BotAngus
2
Passing a lifetime GAT to a closure can cause the compiler to run indefinitely A-GATs Area: Generic associated types (GATs) C-bug Category: This is a bug. 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.
#108826 opened Mar 6, 2023 by jihiggins
11
Busy-loop Evaluating Bound on GAT Argument A-GATs Area: Generic associated types (GATs) 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-compilemem Issue: Problems and improvements with respect to memory usage during compilation. 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.
#108374 opened Feb 23, 2023 by Lunderberg
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