Uplift `clippy::double_neg` lint as `double_negations` #126604

kadiwa4 · 2024-06-17T18:13:33Z

Warns about cases like this:

fn main() {
    let x = 1;
    let _b = --x; //~ WARN use of a double negation
}

The intent is to keep people from thinking that --x is a prefix decrement operator. ++x, x++ and x-- are invalid expressions and already have a helpful diagnostic.

I didn't add a machine-applicable suggestion to the lint because it's not entirely clear what the programmer was trying to achieve with the --x operation. The code that triggers the lint should always be reviewed manually.

Closes #82987

rustbot · 2024-06-17T18:13:40Z

r? @nnethercote

rustbot has assigned @nnethercote.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

rustbot · 2024-06-17T18:13:42Z

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

compiler/rustc_lint/src/builtin.rs

kadiwa4 · 2024-06-18T13:49:55Z

@rustbot author

nnethercote · 2024-06-19T05:54:51Z

This needs T-lang approval. The appropriate labels have been applied to summon them.

bors · 2024-06-30T22:27:12Z

☔ The latest upstream changes (presumably #127174) made this pull request unmergeable. Please resolve the merge conflicts.

kadiwa4 · 2024-09-01T19:37:24Z

@rustbot ready

nnethercote · 2024-09-01T22:15:32Z

Still waiting on T-lang, AFAICT.

kadiwa4 · 2024-09-30T11:07:05Z

@rustbot label: -S-waiting-on-review +S-waiting-on-team

bors · 2024-10-29T03:52:36Z

☔ The latest upstream changes (presumably #128985) made this pull request unmergeable. Please resolve the merge conflicts.

kadiwa4 · 2025-01-26T11:22:29Z

@rustbot label: -S-waiting-on-team +S-waiting-on-review -I-lang-nominated

nnethercote · 2025-01-26T21:59:01Z

Updated code looks fine to me. I think/hope this has gone through all the appropriate hoops and is ready to be merged.

@bors r+

bors · 2025-01-26T21:59:04Z

📌 Commit c1dcbeb has been approved by nnethercote

It is now in the queue for this repository.

Rollup of 8 pull requests Successful merges: - rust-lang#126604 (Uplift `clippy::double_neg` lint as `double_negations`) - rust-lang#135158 (Add `TooGeneric` variant to `LayoutError` and emit `Unknown`) - rust-lang#135635 (Move `std::io::pipe` code into its own file) - rust-lang#136072 (add two old crash tests) - rust-lang#136079 (compiler_fence: fix example) - rust-lang#136091 (Add some tracing to core bootstrap logic) - rust-lang#136097 (rustc_ast: replace some len-checks + indexing with slice patterns etc.) - rust-lang#136101 (triagebot: set myself on vacation) r? `@ghost` `@rustbot` modify labels: rollup

Rollup merge of rust-lang#126604 - kadiwa4:uplift_double_negation, r=nnethercote Uplift `clippy::double_neg` lint as `double_negations` Warns about cases like this: ```rust fn main() { let x = 1; let _b = --x; //~ WARN use of a double negation } ``` The intent is to keep people from thinking that `--x` is a prefix decrement operator. `++x`, `x++` and `x--` are invalid expressions and already have a helpful diagnostic. I didn't add a machine-applicable suggestion to the lint because it's not entirely clear what the programmer was trying to achieve with the `--x` operation. The code that triggers the lint should always be reviewed manually. Closes rust-lang#82987

…nnethercote Uplift `clippy::double_neg` lint as `double_negations` Warns about cases like this: ```rust fn main() { let x = 1; let _b = --x; //~ WARN use of a double negation } ``` The intent is to keep people from thinking that `--x` is a prefix decrement operator. `++x`, `x++` and `x--` are invalid expressions and already have a helpful diagnostic. I didn't add a machine-applicable suggestion to the lint because it's not entirely clear what the programmer was trying to achieve with the `--x` operation. The code that triggers the lint should always be reviewed manually. Closes rust-lang#82987

fmease · 2025-02-02T01:59:52Z

@bors r- ('fixing' desync)

Rollup of 8 pull requests Successful merges: - rust-lang#126604 (Uplift `clippy::double_neg` lint as `double_negations`) - rust-lang#135158 (Add `TooGeneric` variant to `LayoutError` and emit `Unknown`) - rust-lang#135635 (Move `std::io::pipe` code into its own file) - rust-lang#136072 (add two old crash tests) - rust-lang#136079 (compiler_fence: fix example) - rust-lang#136091 (Add some tracing to core bootstrap logic) - rust-lang#136097 (rustc_ast: replace some len-checks + indexing with slice patterns etc.) - rust-lang#136101 (triagebot: set myself on vacation) r? `@ghost` `@rustbot` modify labels: rollup

Upstream changes relative to 1.85.1: Version 1.86.0 (2025-04-03) ========================== Language -------- - [Stabilize upcasting trait objects to supertraits.] (rust-lang/rust#134367) - [Allow safe functions to be marked with the `#[target_feature]` attribute.] (rust-lang/rust#134090) - [The `missing_abi` lint now warns-by-default.] (rust-lang/rust#132397) - Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (`--x`) as written in other languages. This was previously a clippy lint, `clippy::double_neg`, and is [now available directly in Rust as `double_negations`.] (rust-lang/rust#126604) - [More pointers are now detected as definitely not-null based on their alignment in const eval.] (rust-lang/rust#133700) - [Empty `repr()` attribute applied to invalid items are now correctly rejected.] (rust-lang/rust#133925) - [Inner attributes `#![test]` and `#![rustfmt::skip]` are no longer accepted in more places than intended.] (rust-lang/rust#134276) Compiler -------- - [Debug-assert that raw pointers are non-null on access.] (rust-lang/rust#134424) - [Change `-O` to mean `-C opt-level=3` instead of `-C opt-level=2` to match Cargo's defaults.] (rust-lang/rust#135439) - [Fix emission of `overflowing_literals` under certain macro environments.] (rust-lang/rust#136393) Platform Support ---------------- - [Replace `i686-unknown-redox` target with `i586-unknown-redox`.] (rust-lang/rust#136698) - [Increase baseline CPU of `i686-unknown-hurd-gnu` to Pentium 4.] (rust-lang/rust#136700) - New tier 3 targets: - [`{aarch64-unknown,x86_64-pc}-nto-qnx710_iosock`] (rust-lang/rust#133631). For supporting Neutrino QNX 7.1 with `io-socket` network stack. - [`{aarch64-unknown,x86_64-pc}-nto-qnx800`] (rust-lang/rust#133631). For supporting Neutrino QNX 8.0 (`no_std`-only). - [`{x86_64,i686}-win7-windows-gnu`] (rust-lang/rust#134609). Intended for backwards compatibility with Windows 7. `{x86_64,i686}-win7-windows-msvc` are the Windows MSVC counterparts that already exist as Tier 3 targets. - [`amdgcn-amd-amdhsa`](rust-lang/rust#134740). - [`x86_64-pc-cygwin`](rust-lang/rust#134999). - [`{mips,mipsel}-mti-none-elf`] (rust-lang/rust#135074). Initial bare-metal support. - [`m68k-unknown-none-elf`](rust-lang/rust#135085). - [`armv7a-nuttx-{eabi,eabihf}`, `aarch64-unknown-nuttx`, and `thumbv7a-nuttx-{eabi,eabihf}`] (rust-lang/rust#135757). Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - The type of `FromBytesWithNulError` in `CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError>` was [changed from an opaque struct to an enum] (rust-lang/rust#134143), allowing users to examine why the conversion failed. - [Remove `RustcDecodable` and `RustcEncodable`.] (rust-lang/rust#134272) - [Deprecate libtest's `--logfile` option.] (rust-lang/rust#134283) - [On recent versions of Windows, `std::fs::remove_file` will now remove read-only files.] (rust-lang/rust#134679) Stabilized APIs --------------- - [`{float}::next_down`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_down) - [`{float}::next_up`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_up) - [`<[_]>::get_disjoint_mut`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_mut) - [`<[_]>::get_disjoint_unchecked_mut`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_unchecked_mut) - [`slice::GetDisjointMutError`] (https://doc.rust-lang.org/stable/std/slice/enum.GetDisjointMutError.html) - [`HashMap::get_disjoint_mut`] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_mut) - [`HashMap::get_disjoint_unchecked_mut`] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_unchecked_mut) - [`NonZero::count_ones`] (https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.count_ones) - [`Vec::pop_if`] (https://doc.rust-lang.org/std/vec/struct.Vec.html#method.pop_if) - [`sync::Once::wait`] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait) - [`sync::Once::wait_force`] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait_force) - [`sync::OnceLock::wait`] (https://doc.rust-lang.org/stable/std/sync/struct.OnceLock.html#method.wait) These APIs are now stable in const contexts: - [`hint::black_box`] (https://doc.rust-lang.org/stable/std/hint/fn.black_box.html) - [`io::Cursor::get_mut`] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_mut) - [`io::Cursor::set_position`] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.set_position) - [`str::is_char_boundary`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.is_char_boundary) - [`str::split_at`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at) - [`str::split_at_checked`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_checked) - [`str::split_at_mut`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut) - [`str::split_at_mut_checked`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut_checked) Cargo ----- - [When merging, replace rather than combine configuration keys that refer to a program path and its arguments.] (rust-lang/cargo#15066) - [Error if both `--package` and `--workspace` are passed but the requested package is missing.] (rust-lang/cargo#15071) This was previously silently ignored, which was considered a bug since missing packages should be reported. - [Deprecate the token argument in `cargo login` to avoid shell history leaks.] (rust-lang/cargo#15057) - [Simplify the implementation of `SourceID` comparisons.] (rust-lang/cargo#14980) This may potentially change behavior if the canonicalized URL compares differently in alternative registries. Rustdoc ----- - [Add a sans-serif font setting.] (rust-lang/rust#133636) Compatibility Notes ------------------- - [The `wasm_c_abi` future compatibility warning is now a hard error.] (rust-lang/rust#133951) Users of `wasm-bindgen` should upgrade to at least version 0.2.89, otherwise compilation will fail. - [Remove long-deprecated no-op attributes `#![no_start]` and `#![crate_id]`.] (rust-lang/rust#134300) - [The future incompatibility lint `cenum_impl_drop_cast` has been made into a hard error.] (rust-lang/rust#135964) This means it is now an error to cast a field-less enum to an integer if the enum implements `Drop`. - [SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually.] (rust-lang/rust#137037) To compile for pre-SSE2 32-bit x86, use a "i586" target instead. Internal Changes ---------------- These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Build the rustc on AArch64 Linux with ThinLTO + PGO.] (rust-lang/rust#133807) The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

This MR contains the following updates: | Package | Update | Change | |---|---|---| | [rust](https://github.com/rust-lang/rust) | minor | `1.85.1` -> `1.86.0` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>rust-lang/rust (rust)</summary> ### [`v1.86.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1860-2025-04-03) [Compare Source](rust-lang/rust@1.85.1...1.86.0) \========================== <a id="1.86.0-Language"></a> ## Language - [Stabilize upcasting trait objects to supertraits.](rust-lang/rust#134367) - [Allow safe functions to be marked with the `#[target_feature]` attribute.](rust-lang/rust#134090) - [The `missing_abi` lint now warns-by-default.](rust-lang/rust#132397) - Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (`--x`) as written in other languages. This was previously a clippy lint, `clippy::double_neg`, and is [now available directly in Rust as `double_negations`.](rust-lang/rust#126604) - [More pointers are now detected as definitely not-null based on their alignment in const eval.](rust-lang/rust#133700) - [Empty `repr()` attribute applied to invalid items are now correctly rejected.](rust-lang/rust#133925) - [Inner attributes `#![test]` and `#![rustfmt::skip]` are no longer accepted in more places than intended.](rust-lang/rust#134276) <a id="1.86.0-Compiler"></a> ## Compiler - [Debug-assert that raw pointers are non-null on access.](rust-lang/rust#134424) - [Change `-O` to mean `-C opt-level=3` instead of `-C opt-level=2` to match Cargo's defaults.](rust-lang/rust#135439) - [Fix emission of `overflowing_literals` under certain macro environments.](rust-lang/rust#136393) <a id="1.86.0-Platform-Support"></a> ## Platform Support - [Replace `i686-unknown-redox` target with `i586-unknown-redox`.](rust-lang/rust#136698) - [Increase baseline CPU of `i686-unknown-hurd-gnu` to Pentium 4.](rust-lang/rust#136700) - New tier 3 targets: - [`{aarch64-unknown,x86_64-pc}-nto-qnx710_iosock`](rust-lang/rust#133631). For supporting Neutrino QNX 7.1 with `io-socket` network stack. - [`{aarch64-unknown,x86_64-pc}-nto-qnx800`](rust-lang/rust#133631). For supporting Neutrino QNX 8.0 (`no_std`-only). - [`{x86_64,i686}-win7-windows-gnu`](rust-lang/rust#134609). Intended for backwards compatibility with Windows 7. `{x86_64,i686}-win7-windows-msvc` are the Windows MSVC counterparts that already exist as Tier 3 targets. - [`amdgcn-amd-amdhsa`](rust-lang/rust#134740). - [`x86_64-pc-cygwin`](rust-lang/rust#134999). - [`{mips,mipsel}-mti-none-elf`](rust-lang/rust#135074). Initial bare-metal support. - [`m68k-unknown-none-elf`](rust-lang/rust#135085). - [`armv7a-nuttx-{eabi,eabihf}`, `aarch64-unknown-nuttx`, and `thumbv7a-nuttx-{eabi,eabihf}`](rust-lang/rust#135757). Refer to Rust's \[platform support page]\[platform-support-doc] for more information on Rust's tiered platform support. <a id="1.86.0-Libraries"></a> ## Libraries - The type of `FromBytesWithNulError` in `CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError>` was [changed from an opaque struct to an enum](rust-lang/rust#134143), allowing users to examine why the conversion failed. - [Remove `RustcDecodable` and `RustcEncodable`.](rust-lang/rust#134272) - [Deprecate libtest's `--logfile` option.](rust-lang/rust#134283) - [On recent versions of Windows, `std::fs::remove_file` will now remove read-only files.](rust-lang/rust#134679) <a id="1.86.0-Stabilized-APIs"></a> ## Stabilized APIs - [`{float}::next_down`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_down) - [`{float}::next_up`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_up) - [`<[_]>::get_disjoint_mut`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_mut) - [`<[_]>::get_disjoint_unchecked_mut`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_unchecked_mut) - [`slice::GetDisjointMutError`](https://doc.rust-lang.org/stable/std/slice/enum.GetDisjointMutError.html) - [`HashMap::get_disjoint_mut`](https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_mut) - [`HashMap::get_disjoint_unchecked_mut`](https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_unchecked_mut) - [`NonZero::count_ones`](https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.count_ones) - [`Vec::pop_if`](https://doc.rust-lang.org/std/vec/struct.Vec.html#method.pop_if) - [`sync::Once::wait`](https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait) - [`sync::Once::wait_force`](https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait_force) - [`sync::OnceLock::wait`](https://doc.rust-lang.org/stable/std/sync/struct.OnceLock.html#method.wait) These APIs are now stable in const contexts: - [`hint::black_box`](https://doc.rust-lang.org/stable/std/hint/fn.black_box.html) - [`io::Cursor::get_mut`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_mut) - [`io::Cursor::set_position`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.set_position) - [`str::is_char_boundary`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.is_char_boundary) - [`str::split_at`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at) - [`str::split_at_checked`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_checked) - [`str::split_at_mut`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut) - [`str::split_at_mut_checked`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut_checked) <a id="1.86.0-Cargo"></a> ## Cargo - [When merging, replace rather than combine configuration keys that refer to a program path and its arguments.](rust-lang/cargo#15066) - [Error if both `--package` and `--workspace` are passed but the requested package is missing.](rust-lang/cargo#15071) This was previously silently ignored, which was considered a bug since missing packages should be reported. - [Deprecate the token argument in `cargo login` to avoid shell history leaks.](rust-lang/cargo#15057) - [Simplify the implementation of `SourceID` comparisons.](rust-lang/cargo#14980) This may potentially change behavior if the canonicalized URL compares differently in alternative registries. <a id="1.86.0-Rustdoc"></a> ## Rustdoc - [Add a sans-serif font setting.](rust-lang/rust#133636) <a id="1.86.0-Compatibility-Notes"></a> ## Compatibility Notes - [The `wasm_c_abi` future compatibility warning is now a hard error.](rust-lang/rust#133951) Users of `wasm-bindgen` should upgrade to at least version 0.2.89, otherwise compilation will fail. - [Remove long-deprecated no-op attributes `#![no_start]` and `#![crate_id]`.](rust-lang/rust#134300) - [The future incompatibility lint `cenum_impl_drop_cast` has been made into a hard error.](rust-lang/rust#135964) This means it is now an error to cast a field-less enum to an integer if the enum implements `Drop`. - [SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually.](rust-lang/rust#137037) To compile for pre-SSE2 32-bit x86, use a "i586" target instead. <a id="1.86.0-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Build the rustc on AArch64 Linux with ThinLTO + PGO.](rust-lang/rust#133807) The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster. </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

Pkgsrc changes: * Drop support for building now old 1.76.0 rust natively on 32-bit NetBSD arm ports, pushing those to use the rust-bin variant instead. * Use of newer GCC on NetBSD/powerpc turned out to not be required, given that your kernel and user-land is new enough. >= 10.0 release? * Checksum updates. Upstream changes: Version 1.86.0 (2025-04-03) ========================== Language -------- - [Stabilize upcasting trait objects to supertraits.] (rust-lang/rust#134367) - [Allow safe functions to be marked with the `#[target_feature]` attribute.] (rust-lang/rust#134090) - [The `missing_abi` lint now warns-by-default.] (rust-lang/rust#132397) - Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (`--x`) as written in other languages. This was previously a clippy lint, `clippy::double_neg`, and is [now available directly in Rust as `double_negations`.] (rust-lang/rust#126604) - [More pointers are now detected as definitely not-null based on their alignment in const eval.] (rust-lang/rust#133700) - [Empty `repr()` attribute applied to invalid items are now correctly rejected.] (rust-lang/rust#133925) - [Inner attributes `#![test]` and `#![rustfmt::skip]` are no longer accepted in more places than intended.] (rust-lang/rust#134276) Compiler -------- - [Debug-assert that raw pointers are non-null on access.] (rust-lang/rust#134424) - [Change `-O` to mean `-C opt-level=3` instead of `-C opt-level=2` to match Cargo's defaults.] (rust-lang/rust#135439) - [Fix emission of `overflowing_literals` under certain macro environments.] (rust-lang/rust#136393) Platform Support ---------------- - [Replace `i686-unknown-redox` target with `i586-unknown-redox`.] (rust-lang/rust#136698) - [Increase baseline CPU of `i686-unknown-hurd-gnu` to Pentium 4.] (rust-lang/rust#136700) - New tier 3 targets: - [`{aarch64-unknown,x86_64-pc}-nto-qnx710_iosock`] (rust-lang/rust#133631). For supporting Neutrino QNX 7.1 with `io-socket` network stack. - [`{aarch64-unknown,x86_64-pc}-nto-qnx800`] (rust-lang/rust#133631). For supporting Neutrino QNX 8.0 (`no_std`-only). - [`{x86_64,i686}-win7-windows-gnu`] (rust-lang/rust#134609). Intended for backwards compatibility with Windows 7. `{x86_64,i686}-win7-windows-msvc` are the Windows MSVC counterparts that already exist as Tier 3 targets. - [`amdgcn-amd-amdhsa`](rust-lang/rust#134740). - [`x86_64-pc-cygwin`](rust-lang/rust#134999). - [`{mips,mipsel}-mti-none-elf`] (rust-lang/rust#135074). Initial bare-metal support. - [`m68k-unknown-none-elf`](rust-lang/rust#135085). - [`armv7a-nuttx-{eabi,eabihf}`, `aarch64-unknown-nuttx`, and `thumbv7a-nuttx-{eabi,eabihf}`] (rust-lang/rust#135757). Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - The type of `FromBytesWithNulError` in `CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError>` was [changed from an opaque struct to an enum] (rust-lang/rust#134143), allowing users to examine why the conversion failed. - [Remove `RustcDecodable` and `RustcEncodable`.] (rust-lang/rust#134272) - [Deprecate libtest's `--logfile` option.] (rust-lang/rust#134283) - [On recent versions of Windows, `std::fs::remove_file` will now remove read-only files.] (rust-lang/rust#134679) Stabilized APIs --------------- - [`{float}::next_down`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_down) - [`{float}::next_up`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_up) - [`<[_]>::get_disjoint_mut`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_mut) - [`<[_]>::get_disjoint_unchecked_mut`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_unchecked_mut) - [`slice::GetDisjointMutError`] (https://doc.rust-lang.org/stable/std/slice/enum.GetDisjointMutError.html) - [`HashMap::get_disjoint_mut`] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_mut) - [`HashMap::get_disjoint_unchecked_mut`] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_unchecked_mut) - [`NonZero::count_ones`] (https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.count_ones) - [`Vec::pop_if`] (https://doc.rust-lang.org/std/vec/struct.Vec.html#method.pop_if) - [`sync::Once::wait`] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait) - [`sync::Once::wait_force`] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait_force) - [`sync::OnceLock::wait`] (https://doc.rust-lang.org/stable/std/sync/struct.OnceLock.html#method.wait) These APIs are now stable in const contexts: - [`hint::black_box`] (https://doc.rust-lang.org/stable/std/hint/fn.black_box.html) - [`io::Cursor::get_mut`] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_mut) - [`io::Cursor::set_position`] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.set_position) - [`str::is_char_boundary`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.is_char_boundary) - [`str::split_at`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at) - [`str::split_at_checked`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_checked) - [`str::split_at_mut`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut) - [`str::split_at_mut_checked`] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut_checked) Cargo ----- - [When merging, replace rather than combine configuration keys that refer to a program path and its arguments.] (rust-lang/cargo#15066) - [Error if both `--package` and `--workspace` are passed but the requested package is missing.] (rust-lang/cargo#15071) This was previously silently ignored, which was considered a bug since missing packages should be reported. - [Deprecate the token argument in `cargo login` to avoid shell history leaks.] (rust-lang/cargo#15057) - [Simplify the implementation of `SourceID` comparisons.] (rust-lang/cargo#14980) This may potentially change behavior if the canonicalized URL compares differently in alternative registries. Rustdoc ----- - [Add a sans-serif font setting.] (rust-lang/rust#133636) Compatibility Notes ------------------- - [The `wasm_c_abi` future compatibility warning is now a hard error.] (rust-lang/rust#133951) Users of `wasm-bindgen` should upgrade to at least version 0.2.89, otherwise compilation will fail. - [Remove long-deprecated no-op attributes `#![no_start]` and `#![crate_id]`.] (rust-lang/rust#134300) - [The future incompatibility lint `cenum_impl_drop_cast` has been made into a hard error.] (rust-lang/rust#135964) This means it is now an error to cast a field-less enum to an integer if the enum implements `Drop`. - [SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually.] (rust-lang/rust#137037) To compile for pre-SSE2 32-bit x86, use a "i586" target instead. Internal Changes ---------------- These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Build the rustc on AArch64 Linux with ThinLTO + PGO.] (rust-lang/rust#133807) The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

rustbot assigned nnethercote Jun 17, 2024

rustbot added 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. labels Jun 17, 2024

This comment has been minimized.

Sign in to view

kadiwa4 force-pushed the uplift_double_negation branch from af85271 to a745a8d Compare June 17, 2024 18:22

nnethercote reviewed Jun 18, 2024

View reviewed changes

compiler/rustc_lint/src/builtin.rs Show resolved Hide resolved

flip1995 reviewed Jun 18, 2024

View reviewed changes

compiler/rustc_lint/src/builtin.rs Outdated Show resolved Hide resolved

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 18, 2024

compiler-errors added T-lang Relevant to the language team I-lang-nominated Nominated for discussion during a lang team meeting. and removed T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jun 18, 2024

kadiwa4 force-pushed the uplift_double_negation branch from a745a8d to 8f3387c Compare September 1, 2024 17:25

kadiwa4 changed the title ~~Uplift clippy::double_neg lint as double_negation~~ Uplift clippy::double_neg lint as double_negations Sep 1, 2024

This comment has been minimized.

Sign in to view

kadiwa4 force-pushed the uplift_double_negation branch from 8f3387c to 9862f05 Compare September 1, 2024 18:01

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Sep 1, 2024

rustbot added S-waiting-on-team Status: Awaiting decision from the relevant subteam (see the T-<team> label). and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Sep 30, 2024

kadiwa4 force-pushed the uplift_double_negation branch from 9862f05 to beb1dd2 Compare October 29, 2024 19:54

kadiwa4 added 3 commits January 26, 2025 12:15

unrelated cleanup

d810d42

remove clippy::double_neg

9e316f3

implement lint double_negations

c1dcbeb

kadiwa4 force-pushed the uplift_double_negation branch from d3cbf72 to c1dcbeb Compare January 26, 2025 11:18

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 26, 2025

fmease mentioned this pull request Jan 27, 2025

Rollup of 8 pull requests #136116

Merged

bors merged commit 3c58b2f into rust-lang:master Jan 27, 2025
6 checks passed

rustbot added this to the 1.86.0 milestone Jan 27, 2025

kadiwa4 deleted the uplift_double_negation branch January 27, 2025 09:43

bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Feb 2, 2025

cuviper mentioned this pull request Mar 21, 2025

Draft release notes for 1.86.0 #138795

Closed

jieyouxu added A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. L-double_negations Lint: double_negations labels Mar 22, 2025

apiraino removed the to-announce Announce this issue on triage meeting label Apr 30, 2025

Uplift clippy::double_neg lint as double_negations #126604

Uplift clippy::double_neg lint as double_negations #126604

Uh oh!

Conversation

kadiwa4 commented Jun 17, 2024 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

rustbot commented Jun 17, 2024

Uh oh!

rustbot commented Jun 17, 2024

Uh oh!

This comment has been minimized.

Uh oh!

Uh oh!

kadiwa4 commented Jun 18, 2024

Uh oh!

nnethercote commented Jun 19, 2024

Uh oh!

bors commented Jun 30, 2024

Uh oh!

This comment has been minimized.

kadiwa4 commented Sep 1, 2024

Uh oh!

nnethercote commented Sep 1, 2024

Uh oh!

kadiwa4 commented Sep 30, 2024

Uh oh!

bors commented Oct 29, 2024

Uh oh!

kadiwa4 commented Jan 26, 2025

Uh oh!

nnethercote commented Jan 26, 2025

Uh oh!

bors commented Jan 26, 2025

Uh oh!

Uh oh!

fmease commented Feb 2, 2025

Uh oh!

Uh oh!

Uplift `clippy::double_neg` lint as `double_negations` #126604

Uplift `clippy::double_neg` lint as `double_negations` #126604

kadiwa4 commented Jun 17, 2024 •

edited

Loading