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Issues list

Deadlock when capturing a backtrace from allocator during panic with test output capturing enabled A-backtrace Area: Backtraces C-bug Category: This is a bug. regression-from-stable-to-stable Performance or correctness regression from one stable version to another.
#130187 opened Sep 10, 2024 by Nemo157
2
ICE: Layout::compute: unexpected type _ A-layout Area: Memory layout of types C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. 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.
#130104 opened Sep 8, 2024 by matthiaskrgr
2
Error on bounds for unused lifetime A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. P-low Low priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-types Relevant to the types team, which will review and decide on the PR/issue.
#130014 opened Sep 6, 2024 by Coder-256
3
regression: assertion left == right failed for floats I-prioritize Issue: Indicates that prioritization has been requested for this issue. 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.
#128898 opened Aug 9, 2024 by BoxyUwU
6
unreachable!("state is never set to invalid values") is reached A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-windows Operating system: Windows P-high High priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. 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.
#127979 opened Jul 19, 2024 by janhohenheim
53
Degradation from rustc 1.71.0 -> 1.79.0 ("infinite space" compile error not recognized anymore) A-inference Area: Type inference C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. 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.
#127910 opened Jul 18, 2024 by Asqiir
6
Hang on overflowing evaluating the requirement with extra generic types A-inference Area: Type inference A-traits 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. 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.
#127315 opened Jul 4, 2024 by sgdxbc
5
Panic when setting RUST_MIN_STACK incorrectly C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ 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.
#126431 opened Jun 13, 2024 by jeffreyssmith2nd
5
rustc complains about unused code if item is used in #[automatically_derived] context A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. P-low Low 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.
#126031 opened Jun 5, 2024 by aumetra
@mu001999
8
Excess object in staticlib archive eventually causing link error A-linkage Area: linking into static, shared libraries and binaries C-bug Category: This is a bug. I-prioritize Issue: Indicates that prioritization has been requested for this issue. 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.
#125619 opened May 27, 2024 by XrXr
2
Coverage on stable 1.79.0 fails with : maybe try to call try_normalize_erasing_regions instead A-code-coverage Area: Source-based code coverage (-Cinstrument-coverage) 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) ❄️ 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.
#125353 opened May 21, 2024 by la10736
9
3-way comparison is branchier after 1.71 A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated 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.
#125338 opened May 20, 2024 by mqudsi
6
out of memory C-bug Category: This is a bug. I-compilemem Issue: Problems and improvements with respect to memory usage during compilation. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another.
#124901 opened May 8, 2024 by matthiaskrgr 1.77.0
8
Performance regression: rustc failed to optimize _mm256_avg_epu8 after 1.75.0 A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-SIMD Area: SIMD (Single Instruction Multiple Data) C-bug Category: This is a bug. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc I-heavy Issue: Problems and improvements with respect to binary size of generated code. I-slow Issue: Problems and improvements with respect to performance of generated code. P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#124216 opened Apr 21, 2024 by Nugine
8
RUST_BACKTRACE=full loop with -Cpanic=abort on aarch64-unknown-linux-gnu A-runtime Area: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows C-bug Category: This is a bug. O-AArch64 Armv8-A or later processors in AArch64 mode P-high High 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.
#123733 opened Apr 10, 2024 by cuviper
1
25
rust 1.77.1 fails to build on aarch64-unknown-netbsd with stack exhaustion C-bug Category: This is a bug. O-AArch64 Armv8-A or later processors in AArch64 mode O-netbsd Operating system: NetBSD P-low Low priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#123551 opened Apr 6, 2024 by he32
22
rust 1.77.1 fails to build natively on armv7-unknown-netbsd-eabihf C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-Arm Target: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state O-netbsd Operating system: NetBSD P-low Low priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#123549 opened Apr 6, 2024 by he32
17
Diagnostic regression for proc-macro generated code A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another.
#123503 opened Apr 5, 2024 by weiznich
3
Double panic on MSVC no longer prints abort message C-bug Category: This is a bug. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc O-windows Operating system: Windows 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.
#123470 opened Apr 4, 2024 by CAD97
1
Matching on ASCII digits no longer optimized A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-bug Category: This is a bug. 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. 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.
#123305 opened Mar 31, 2024 by krtab
@krtab
2
Rust 1.45+ generates suboptimal control flow for ARMv7 atomic compare exchange A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-heavy Issue: Problems and improvements with respect to binary size of generated code. I-slow Issue: Problems and improvements with respect to performance of generated code. O-Arm Target: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state P-low Low 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.
#123113 opened Mar 26, 2024 by ds84182
2
#![crate_name = EXPR] semantically allows EXPR to be a macro call but otherwise mostly ignores it A-attributes Area: Attributes (`#[…]`, `#![…]`) A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. finished-final-comment-period The final comment period is finished for this PR / Issue. P-high High priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#122001 opened Mar 4, 2024 by fmease
1
@fmease
18
stack overflow during debuginfo generation A-debuginfo Area: Debugging information in compiled programs (DWARF, PDB, etc.) C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. 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.
#121538 opened Feb 24, 2024 by matthiaskrgr
@michaelwoerister
3
rust-1.75.0 fails to compile with ICE on aarch64 and various ppc arches with LTO enabled - error: could not compile memchr A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-LTO Area: Link-time optimization (LTO) C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-AArch64 Armv8-A or later processors in AArch64 mode O-PowerPC Target: PowerPC processors P-high High 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.
#121124 opened Feb 15, 2024 by bowlofeggs
12
rustc inside make -j2 warns (regression from 1.75.0) C-bug Category: This is a bug. 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.
#120515 opened Jan 30, 2024 by ojeda 1.76.0
16
ProTip! Adding no:label will show everything without a label.