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Issues list

[Polonius] Timeout while compiling handcrafted example C-bug Category: This is a bug. I-compiletime Issue: Problems and improvements with respect to compile times. NLL-polonius Issues related for using Polonius in the borrow checker 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.
#140454 opened Apr 29, 2025 by usx95
ICE: polonius: None in region infer with unconditional panic A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ NLL-polonius Issues related for using Polonius in the borrow checker S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-types Relevant to the types team, which will review and decide on the PR/issue.
#135646 opened Jan 17, 2025 by matthiaskrgr
@lqd
3
Polonius fails to infer lifetimes of borrows C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker T-types Relevant to the types team, which will review and decide on the PR/issue.
#134554 opened Dec 20, 2024 by zeenix
5
Large arrays of enum variants causes polonius to have massive performance issues A-borrow-checker Area: The borrow checker C-bug Category: This is a bug. I-compiletime Issue: Problems and improvements with respect to compile times. NLL-polonius Issues related for using Polonius in the borrow checker 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-types Relevant to the types team, which will review and decide on the PR/issue.
#133054 opened Nov 14, 2024 by lilyyy411
2
Regression between nightlies with -Zpolonius A-borrow-checker Area: The borrow checker C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker 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-types Relevant to the types team, which will review and decide on the PR/issue.
#126520 opened Jun 15, 2024 by Nadrieril
@amandasystems
7
Borrow checking can be effected by seemingly irrelevant statements A-borrow-checker Area: The borrow checker C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#111298 opened May 6, 2023 by matthewjasper
@matthewjasper
4
"left.extend_from_slice(right.strip_prefix(&mut left[n..]).unwrap())" doesn't compile A-borrow-checker Area: The borrow checker A-lifetimes Area: Lifetimes / regions A-NLL Area: Non-lexical lifetimes (NLL) C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#110362 opened Apr 15, 2023 by safinaskar
7
"&mut v[v[0]..]" doesn't compile A-borrow-checker Area: The borrow checker A-lifetimes Area: Lifetimes / regions A-NLL Area: Non-lexical lifetimes (NLL) C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#110351 opened Apr 15, 2023 by safinaskar
4
proc-macro-hack takes excessively long to check with polonius C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-compiletime Issue: Problems and improvements with respect to compile times. NLL-polonius Issues related for using Polonius in the borrow checker requires-nightly This issue requires a nightly compiler in some way.
#98029 opened Jun 12, 2022 by joshtriplett
infinite? loop when compiling serde_derive utilizing polonius C-bug Category: This is a bug. I-compiletime Issue: Problems and improvements with respect to compile times. NLL-polonius Issues related for using Polonius in the borrow checker 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.
#81303 opened Jan 23, 2021 by djugei
2
Polonius performance problem on nix and libc C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated code. NLL-performant Working towards the "performance is good" goal NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#75858 opened Aug 23, 2020 by joshtriplett
2
Inconsistent borrow check in async function A-borrow-checker Area: The borrow checker C-bug Category: This is a bug. fixed-by-polonius Compiling with `-Zpolonius` fixes this issue. NLL-polonius Issues related for using Polonius in the borrow checker P-medium Medium priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#74068 opened Jul 5, 2020 by Nugine
8
BinaryHeap::peek_mut borrow check error (previously worked with -Z polonius) A-borrow-checker Area: The borrow checker C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#70797 opened Apr 5, 2020 by andersk
7
Mutable borrow of field with autoref vs ref mut A-lifetimes Area: Lifetimes / regions A-NLL Area: Non-lexical lifetimes (NLL) NLL-complete Working towards the "valid code works" goal NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#67957 opened Jan 7, 2020 by davidhewitt
5
rust compiler bug on borrow/ownership? A-NLL Area: Non-lexical lifetimes (NLL) C-bug Category: This is a bug. NLL-complete Working towards the "valid code works" goal NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#67824 opened Jan 3, 2020 by fifc
Occasional "cannot move out" error (E0505) when adding a match guard A-borrow-checker Area: The borrow checker A-NLL Area: Non-lexical lifetimes (NLL) C-enhancement Category: An issue proposing an enhancement or a PR with one. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#65236 opened Oct 9, 2019 by bytefall
2
spurious error "cannot borrow *x as mutable more than once at a time" A-NLL Area: Non-lexical lifetimes (NLL) C-enhancement Category: An issue proposing an enhancement or a PR with one. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#63185 opened Aug 1, 2019 by benw
1
match guard is lengthening borrow unexpectedly under NLL A-NLL Area: Non-lexical lifetimes (NLL) C-bug Category: This is a bug. NLL-complete Working towards the "valid code works" goal NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#62170 opened Jun 27, 2019 by pnkfelix
1
Borrow checker doesn't accept certain valid case when branch involves A-NLL Area: Non-lexical lifetimes (NLL) NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#57165 opened Dec 28, 2018 by upsuper
1
Borrow error in if statement inside match arm, but not when a match guard is used A-NLL Area: Non-lexical lifetimes (NLL) NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#56374 opened Nov 30, 2018 by peterjoel
NLL: if let not detecting proper lifetime A-NLL Area: Non-lexical lifetimes (NLL) NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#51826 opened Jun 26, 2018 by Ekleog
5
NLL no longer figures out non-lexical lifetimes within loop A-NLL Area: Non-lexical lifetimes (NLL) C-enhancement Category: An issue proposing an enhancement or a PR with one. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#51526 opened Jun 12, 2018 by daboross
1
Borrowing an immutable reference of a mutable reference through a function call in a loop is not accepted A-NLL Area: Non-lexical lifetimes (NLL) C-enhancement Category: An issue proposing an enhancement or a PR with one. NLL-polonius Issues related for using Polonius in the borrow checker T-lang Relevant to the language team
#51132 opened May 28, 2018 by shepmaster
4
The mutable borrow is released when matching on a Option<&mut Self> in a function, but not when the function is inlined A-NLL Area: Non-lexical lifetimes (NLL) C-bug Category: This is a bug. NLL-polonius Issues related for using Polonius in the borrow checker T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#47680 opened Jan 23, 2018 by shepmaster
20
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