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Issues list

Box sometimes forgets to drop its allocator when the Box is conditionally initialized. A-box Area: Our favorite opsem complication A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#131082 opened Oct 1, 2024 by theemathas
1
@beepster4096
2
tests/debuginfo/macro-stepping.rs remains broken with SingleUseConsts A-debuginfo Area: Debugging information in compiled programs (DWARF, PDB, etc.) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html A-testsuite Area: The testsuite used to check the correctness of rustc C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-debugging Working group: Bad Rust debugging experiences WG-llvm Working group: LLVM backend code generation
#130896 opened Sep 26, 2024 by khuey
Range<usize>::next should fully MIR-inline A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html A-mir-opt-inlining Area: MIR inlining 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.
#130590 opened Sep 20, 2024 by scottmcm
1
2
MIR building generates mistyped assignments for opaques in dead code A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#129084 opened Aug 14, 2024 by lcnr
Unexpected unsizing coercion introduced by unsafe block A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html T-opsem Relevant to the opsem team T-types Relevant to the types team, which will review and decide on the PR/issue.
#128880 opened Aug 9, 2024 by RalfJung
3
MIR_borrow_checking and MIR_effect_checking are very slow A-borrow-checker Area: The borrow checker A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-bug Category: This is a bug. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example 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.
#126440 opened Jun 13, 2024 by programmerjake
2
ICE: called Option::unwrap() on a None value in rustc_middle/src/mir/tcx.rs A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-incomplete-features 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.
#125801 opened May 31, 2024 by cushionbadak
2
Change SwitchTarget (in TerminatorKind::SwitchInt) to use ScalarInt A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-enhancement Category: An issue proposing an enhancement or a PR with one. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124127 opened Apr 18, 2024 by RalfJung
ICE: broken mir with temporary lifetime extention 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.
#123810 opened Apr 11, 2024 by matthiaskrgr
@dingxiangfei2009
2
ICE: Unsigned value 0x100 does not fit in 8 bits A-layout Area: Memory layout of types A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html C-bug Category: This is a bug. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example 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.
#123690 opened Apr 9, 2024 by matthiaskrgr
4
Try to hoist the conversion of diverging calls to aborts to a layer above MIR lowering A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html E-help-wanted Call for participation: Help is requested to fix this issue. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#122956 opened Mar 23, 2024 by saethlin
12
ICE: b.index() < self.live_nodes 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. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#121623 opened Feb 26, 2024 by matthiaskrgr
1
4
ICE: called 'Result::unwrap()' on an 'Err' value: Unknown(Aligned) 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. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#121097 opened Feb 14, 2024 by matthiaskrgr
2
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
Custom MIR: ICE on assigning to reference in enum variant A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html 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.
#119940 opened Jan 13, 2024 by cbeuw
2
ICE: Failed to extract DefId: def_kind e8...bc A-incr-comp Area: Incremental compilation 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-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.
#119132 opened Dec 19, 2023 by 0xTiger
@cjgillot
7
Closure field capturing leads to inconsistent MIR printing A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html
#115307 opened Aug 28, 2023 by RalfJung
2
Can MIR have irreducible control flow? A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html
#114047 opened Jul 25, 2023 by RalfJung
12
Custom MIR: bad span for assignments A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#113549 opened Jul 10, 2023 by RalfJung
1
Removing DropAndReplace MIR allowed more code to compile A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html T-lang Relevant to the language team, which will review and decide on the PR/issue.
#113501 opened Jul 9, 2023 by cjgillot
2 tasks
1.70.0
@cjgillot
1
make subtyping explicit post analysis A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html A-mir-opt Area: MIR optimizations A-variance Area: Variance (https://doc.rust-lang.org/nomicon/subtyping.html) C-cleanup Category: PRs that clean code up or issues documenting cleanup. E-medium Call for participation: Medium difficulty. Experience needed to fix: Intermediate.
#112651 opened Jun 15, 2023 by lcnr
@ouz-a
13
Combining place projections in MIR makes codegen forget that NonNull is nonnull A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html
#111518 opened May 12, 2023 by saethlin
1
unsized_fn_params allows some unsized locals A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html F-unsized_fn_params `#![feature(unsized_fn_params)]` requires-nightly This issue requires a nightly compiler in some way.
#111175 opened May 4, 2023 by RalfJung
1
5
Large amount of generated code for match statements with large arrays A-array Area: `[T; N]` A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html A-patterns Relating to patterns and pattern matching I-heavy Issue: Problems and improvements with respect to binary size of generated code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#110870 opened Apr 26, 2023 by alex
1
6
seemingly incorrect nontrivial_structural_match warning A-const-eval Area: Constant evaluation (MIR interpretation) A-MIR Area: Mid-level IR (MIR) - https://blog.rust-lang.org/2016/04/19/MIR.html A-patterns Relating to patterns and pattern matching C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#110508 opened Apr 18, 2023 by jmhain
@ericmarkmartin
4
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