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Issues list

Tracking issue for banning field projecting into [rustc_layout_scalar_valid_range_*] types (MCP807) A-mir-opt Area: MIR optimizations 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. T-libs Relevant to the library team, which will review and decide on the PR/issue. WG-mir-opt Working group: MIR optimizations
#133652 opened Nov 29, 2024 by scottmcm
5 tasks
ICE: entered unreachable code: FieldsShape::offset: Primitives have no fields -Zvalidate-mir Unstable option: MIR validation A-mir-opt Area: MIR optimizations A-mir-opt-inlining Area: MIR inlining C-bug Category: This is a bug. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133624 opened Nov 29, 2024 by matthiaskrgr
5
ICE: is not a pointer or reference type -Zvalidate-mir Unstable option: MIR validation A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ 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.
#133065 opened Nov 15, 2024 by matthiaskrgr
3
ReferencePropagation introduces UB into code that is accepted by Stacked Borrows A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. E-needs-investigation Call for partcipation: This issues needs some investigation to determine current status I-miscompile Issue: Correct Rust code lowers to incorrect machine code T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-mir-opt Working group: MIR optimizations
#132898 opened Nov 11, 2024 by RalfJung
4
Invalidate all dereferences when encountering non-local assignments A-mir-opt Area: MIR optimizations perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132527 opened Nov 2, 2024 by DianQK Loading…
1
@oli-obk @cjgillot
52
Panic in nightly 1.83.0 and 1.84.0 with opt-level >= 1 when unwrapping Some variant A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-miscompile Issue: Correct Rust code lowers to incorrect machine code P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132353 opened Oct 30, 2024 by Specy 1.83.0
1
@DianQK
24
ICE: jump threading: 2 != 1 A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-debug-assertions This issue requires a build of rustc or tooling with debug-assertions in some way 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.
#131451 opened Oct 9, 2024 by matthiaskrgr
2
ICE: InterpErrorInfo(InterpErrorInfoInner { kind: UndefinedBehavior(BoundsCheckFailed A-mir-opt Area: MIR optimizations A-mir-opt-GVN Area: MIR opt Global Value Numbering (GVN) C-bug Category: This is a bug. F-adt_const_params `#![feature(adt_const_params)]` F-unsized_const_params `#![feature(unsized_const_params)]` 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.
#129095 opened Aug 14, 2024 by matthiaskrgr
1
Miscompilation of a program projecting field of an extern type A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. F-extern_types `#![feature(extern_types)]` I-miscompile Issue: Correct Rust code lowers to incorrect machine code 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-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-opsem Relevant to the opsem team
#127336 opened Jul 4, 2024 by tmiasko
Performance regression between v1.76.0 and v1.77.2 A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. P-medium Medium priority regression-untriaged Untriaged performance or correctness regression.
#125543 opened May 25, 2024 by jmillikin
10
ICE: Couldn't evaluate constant const -Zpolymorphize Unstable option: Polymorphization. A-mir-opt Area: MIR optimizations A-mir-opt-inlining Area: MIR inlining 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.
#123893 opened Apr 13, 2024 by matthiaskrgr
3
Figure out the interaction of GVN and function/vtable pointers A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#123670 opened Apr 9, 2024 by RalfJung
14
Inefficient compiler optimization between stable versions on nightly A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated code. P-medium Medium priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#123262 opened Mar 31, 2024 by ArhanChaudhary
9
Evaluating constants in MIR optimizations introduces const eval errors A-const-eval Area: Constant evaluation, covers all const contexts (static, const fn, ...) A-mir-opt Area: MIR optimizations A-monomorphization Area: Monomorphization C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#122828 opened Mar 21, 2024 by tmiasko
11
ICE: Got a scalar pair where a scalar was expected A-mir-opt Area: MIR optimizations A-mir-opt-GVN Area: MIR opt Global Value Numbering (GVN) C-bug Category: This is a bug. F-trivial_bounds `#![feature(trivial_bounds)]` 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.
#121363 opened Feb 20, 2024 by matthiaskrgr
13
Very slow 80 minutes release build, due mir_pass_scalar_replacement_of_aggregates (sroa) optimization enabled A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-compiletime Issue: Problems and improvements with respect to compile times. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#121354 opened Feb 20, 2024 by qarmin
1
ICE immediate Scalar(alloc1) does not fit to layout TyAndLayout A-const-eval Area: Constant evaluation, covers all const contexts (static, const fn, ...) A-mir-opt Area: MIR optimizations A-mir-opt-inlining Area: MIR inlining C-bug Category: This is a bug. F-trivial_bounds `#![feature(trivial_bounds)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-debug-assertions This issue requires a build of rustc or tooling with debug-assertions in some way 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.
#121176 opened Feb 16, 2024 by matthiaskrgr
3
Test polymorphic_recursion.rs takes a long time to compile with a debug-assertions=true compiler A-contributor-roadblock Area: Makes things more difficult for new contributors to rust itself A-mir-opt Area: MIR optimizations A-testsuite Area: The testsuite used to check the correctness of rustc 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.
#121121 opened Feb 15, 2024 by Zalathar
4
Multiple bounds checking elision failures A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-mir-opt Area: MIR optimizations C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-slow Issue: Problems and improvements with respect to performance of generated code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#120433 opened Jan 27, 2024 by SUPERCILEX
Enable MultipleReturnTerminators by default. A-mir-opt Area: MIR optimizations perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#120179 opened Jan 21, 2024 by cjgillot • Draft
7
[perf only] Reimplement references debuginfo as projection. A-mir-opt Area: MIR optimizations perf-regression Performance regression. S-experimental Status: Ongoing experiment that does not require reviewing and won't be merged in its current state. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#119471 opened Dec 31, 2023 by cjgillot • Draft
16
Suboptimal order of tests in match A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated code.
#117970 opened Nov 16, 2023 by Kmeakin
1
4
Add FileCheck annotations to MIR-opt tests A-mir-opt Area: MIR optimizations A-testsuite Area: The testsuite used to check the correctness of rustc E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. E-help-wanted Call for participation: Help is requested to fix this issue. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. E-tedious Call for participation: An issue involves lots of work and is better handled as many small tasks. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#116971 opened Oct 20, 2023 by cjgillot
14
EnumSizeOpt changes behavior based on the host A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#116768 opened Oct 15, 2023 by saethlin
Missed optimization: RVO isn't applied A-codegen Area: Code generation A-mir-opt Area: MIR optimizations A-mir-opt-nrvo Fixed by the Named Return Value Opt. (NRVO) C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#116541 opened Oct 8, 2023 by gootorov
10
ProTip! Exclude everything labeled bug with -label:bug.