[rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. #143662

obi1kenobi · 2025-07-09T00:50:43Z

Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML:

#[no_mangle] -> #[unsafe(no_mangle)]
#[export_name = "foo"] -> #[unsafe(export_name = "foo")]
#[link_section = ".text"] -> #[unsafe(link_section = ".text")]

The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that unsafe() wasn't always necessary) in order to understand a crate's documentation.

After some looking through the T-rustdoc issues, I was not able to find an existing issue for this. Apologies if I missed it.

r? @aDotInTheVoid

rustbot · 2025-07-09T00:50:47Z

aDotInTheVoid is currently at their maximum review capacity.
They may take a while to respond.

rustbot · 2025-07-09T00:50:49Z

rustdoc-json-types is a public (although nightly-only) API. If possible, consider changing src/librustdoc/json/conversions.rs; otherwise, make sure you bump the FORMAT_VERSION constant.

cc @CraftSpider, @aDotInTheVoid, @Enselic, @obi1kenobi

These commits modify tests/rustdoc-json.
rustdoc-json is a public (but unstable) interface.

Please ensure that if you've changed the output:

It's intentional.
The FORMAT_VERSION in src/librustdoc-json-types is bumped if necessary.

cc @aDotInTheVoid, @obi1kenobi

aDotInTheVoid · 2025-07-09T01:35:27Z

#142936 is likely to merge before this, as this requires a FCP for UI changes. Therefore all the rustdoc-json changes are likely to go away here.

@rfcbot fcp merge

obi1kenobi · 2025-07-09T01:37:24Z

Not an issue, thanks for the heads-up.

aDotInTheVoid · 2025-07-09T01:39:19Z

@rfcbot fcp cancel

rfcbot · 2025-07-09T01:39:20Z

@aDotInTheVoid proposal cancelled.

aDotInTheVoid · 2025-07-09T01:40:34Z

@rfcbot fcp merge

(accidentally FCP’d to full T-Rustdoc, not T-Rustdoc-Frontend 💀)

aDotInTheVoid · 2025-07-09T07:35:23Z

@rust-lang/rustdoc-frontend can someone start an FCP on this?

GuillaumeGomez · 2025-07-09T08:13:31Z

Sounds like a good idea!

@aDotInTheVoid normally with only the t-rustdoc-frontend tag, you were good to go. 😉

EDIT: Ah no, just learned that you need o be part of the (sub-)team to do that, my bad.

@rfcbot fcp merge

rfcbot · 2025-07-09T08:13:34Z

Team member @GuillaumeGomez has proposed to merge this. The next step is review by the rest of the tagged team members:

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.

rfcbot · 2025-07-21T23:23:13Z

🔔 This is now entering its final comment period, as per the review above. 🔔

rfcbot · 2025-07-31T23:27:48Z

The final comment period, with a disposition to merge, as per the review above, is now complete.

As the automated representative of the governance process, I would like to thank the author for their work and everyone else who contributed.

This will be merged soon.

GuillaumeGomez · 2025-08-01T08:55:15Z

Thanks everyone!

@bors r=t-rustdoc rollup

bors · 2025-08-01T08:55:17Z

📌 Commit 45231fa has been approved by t-rustdoc

It is now in the queue for this repository.

…ppers, r=t-rustdoc [rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML: - `#[no_mangle]` -> `#[unsafe(no_mangle)]` - `#[export_name = "foo"]` -> `#[unsafe(export_name = "foo")]` - `#[link_section = ".text"]` -> `#[unsafe(link_section = ".text")]` The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that `unsafe()` wasn't always necessary) in order to understand a crate's documentation. After some looking through the `T-rustdoc` issues, I was not able to find an existing issue for this. Apologies if I missed it. r? `@aDotInTheVoid`

Rollup of 10 pull requests Successful merges: - #132748 (get rid of some false negatives in rustdoc::broken_intra_doc_links) - #135771 ([rustdoc] Add support for associated items in "jump to def" feature) - #143360 (loop match: error on `#[const_continue]` outside `#[loop_match]`) - #143662 ([rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers.) - #143900 ([rustdoc] Correctly handle `should_panic` doctest attribute and fix `--no-run` test flag on the 2024 edition) - #144614 (Fortify RemoveUnneededDrops test.) - #144703 ([test][AIX] ignore extern_weak linkage test) - #144738 (Remove the omit_gdb_pretty_printer_section attribute) - #144756 (detect infinite recursion with tail calls in ctfe) - #144766 (Add human readable name "Cygwin") r? `@ghost` `@rustbot` modify labels: rollup

…ppers, r=t-rustdoc [rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML: - `#[no_mangle]` -> `#[unsafe(no_mangle)]` - `#[export_name = "foo"]` -> `#[unsafe(export_name = "foo")]` - `#[link_section = ".text"]` -> `#[unsafe(link_section = ".text")]` The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that `unsafe()` wasn't always necessary) in order to understand a crate's documentation. After some looking through the `T-rustdoc` issues, I was not able to find an existing issue for this. Apologies if I missed it. r? ``@aDotInTheVoid``

Rollup of 11 pull requests Successful merges: - #132748 (get rid of some false negatives in rustdoc::broken_intra_doc_links) - #135771 ([rustdoc] Add support for associated items in "jump to def" feature) - #143360 (loop match: error on `#[const_continue]` outside `#[loop_match]`) - #143662 ([rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers.) - #143900 ([rustdoc] Correctly handle `should_panic` doctest attribute and fix `--no-run` test flag on the 2024 edition) - #144478 (Improve formatting of doc code blocks) - #144703 ([test][AIX] ignore extern_weak linkage test) - #144747 (compiletest: Improve diagnostics for line annotation mismatches 2) - #144756 (detect infinite recursion with tail calls in ctfe) - #144766 (Add human readable name "Cygwin") - #144782 (Properly pass path to staged `rustc` to `compiletest` self-tests) r? `@ghost` `@rustbot` modify labels: rollup

…ppers, r=t-rustdoc [rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML: - `#[no_mangle]` -> `#[unsafe(no_mangle)]` - `#[export_name = "foo"]` -> `#[unsafe(export_name = "foo")]` - `#[link_section = ".text"]` -> `#[unsafe(link_section = ".text")]` The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that `unsafe()` wasn't always necessary) in order to understand a crate's documentation. After some looking through the `T-rustdoc` issues, I was not able to find an existing issue for this. Apologies if I missed it. r? ```@aDotInTheVoid```

…ppers, r=t-rustdoc [rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML: - `#[no_mangle]` -> `#[unsafe(no_mangle)]` - `#[export_name = "foo"]` -> `#[unsafe(export_name = "foo")]` - `#[link_section = ".text"]` -> `#[unsafe(link_section = ".text")]` The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that `unsafe()` wasn't always necessary) in order to understand a crate's documentation. After some looking through the `T-rustdoc` issues, I was not able to find an existing issue for this. Apologies if I missed it. r? ````@aDotInTheVoid````

Rollup of 12 pull requests Successful merges: - #132748 (get rid of some false negatives in rustdoc::broken_intra_doc_links) - #135771 ([rustdoc] Add support for associated items in "jump to def" feature) - #143360 (loop match: error on `#[const_continue]` outside `#[loop_match]`) - #143662 ([rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers.) - #144478 (Improve formatting of doc code blocks) - #144703 ([test][AIX] ignore extern_weak linkage test) - #144747 (compiletest: Improve diagnostics for line annotation mismatches 2) - #144766 (Add human readable name "Cygwin") - #144782 (Properly pass path to staged `rustc` to `compiletest` self-tests) - #144786 (Cleanup the definition of `group_type`) - #144796 (Add my previous commit name to .mailmap) - #144797 (Update safety comment for new_unchecked in niche_types) r? `@ghost` `@rustbot` modify labels: rollup

…ppers, r=t-rustdoc [rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML: - `#[no_mangle]` -> `#[unsafe(no_mangle)]` - `#[export_name = "foo"]` -> `#[unsafe(export_name = "foo")]` - `#[link_section = ".text"]` -> `#[unsafe(link_section = ".text")]` The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that `unsafe()` wasn't always necessary) in order to understand a crate's documentation. After some looking through the `T-rustdoc` issues, I was not able to find an existing issue for this. Apologies if I missed it. r? `````@aDotInTheVoid`````

Rollup of 18 pull requests Successful merges: - #132748 (get rid of some false negatives in rustdoc::broken_intra_doc_links) - #135771 ([rustdoc] Add support for associated items in "jump to def" feature) - #143360 (loop match: error on `#[const_continue]` outside `#[loop_match]`) - #143662 ([rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers.) - #143771 (Constify some more `Result` functions) - #143900 ([rustdoc] Correctly handle `should_panic` doctest attribute and fix `--no-run` test flag on the 2024 edition) - #144185 (Document guarantees of poisoning) - #144395 (update fortanix tests) - #144478 (Improve formatting of doc code blocks) - #144614 (Fortify RemoveUnneededDrops test.) - #144703 ([test][AIX] ignore extern_weak linkage test) - #144747 (compiletest: Improve diagnostics for line annotation mismatches 2) - #144756 (detect infinite recursion with tail calls in ctfe) - #144766 (Add human readable name "Cygwin") - #144782 (Properly pass path to staged `rustc` to `compiletest` self-tests) - #144786 (Cleanup the definition of `group_type`) - #144796 (Add my previous commit name to .mailmap) - #144797 (Update safety comment for new_unchecked in niche_types) Failed merges: - #144805 (compiletest: Preliminary cleanup of `ProcRes` printing/unwinding) r? `@ghost` `@rustbot` modify labels: rollup

Rollup of 17 pull requests Successful merges: - #132748 (get rid of some false negatives in rustdoc::broken_intra_doc_links) - #143360 (loop match: error on `#[const_continue]` outside `#[loop_match]`) - #143662 ([rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers.) - #143771 (Constify some more `Result` functions) - #144185 (Document guarantees of poisoning) - #144395 (update fortanix tests) - #144478 (Improve formatting of doc code blocks) - #144614 (Fortify RemoveUnneededDrops test.) - #144703 ([test][AIX] ignore extern_weak linkage test) - #144747 (compiletest: Improve diagnostics for line annotation mismatches 2) - #144756 (detect infinite recursion with tail calls in ctfe) - #144766 (Add human readable name "Cygwin") - #144782 (Properly pass path to staged `rustc` to `compiletest` self-tests) - #144786 (Cleanup the definition of `group_type`) - #144796 (Add my previous commit name to .mailmap) - #144797 (Update safety comment for new_unchecked in niche_types) - #144803 (rustc-dev-guide subtree update) r? `@ghost` `@rustbot` modify labels: rollup

Rollup merge of #143662 - obi1kenobi:pg/unsafe-attribute-wrappers, r=t-rustdoc [rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. Use Rust 2024 edition representation for unsafe attributes in rustdoc HTML: - `#[no_mangle]` -> `#[unsafe(no_mangle)]` - `#[export_name = "foo"]` -> `#[unsafe(export_name = "foo")]` - `#[link_section = ".text"]` -> `#[unsafe(link_section = ".text")]` The 2024 edition representation is used regardless of the crate's own edition. This ensures that Rustaceans don't have to learn the rules of an outdated edition (e.g. that `unsafe()` wasn't always necessary) in order to understand a crate's documentation. After some looking through the `T-rustdoc` issues, I was not able to find an existing issue for this. Apologies if I missed it. r? ``````@aDotInTheVoid``````

Rollup of 17 pull requests Successful merges: - rust-lang/rust#132748 (get rid of some false negatives in rustdoc::broken_intra_doc_links) - rust-lang/rust#143360 (loop match: error on `#[const_continue]` outside `#[loop_match]`) - rust-lang/rust#143662 ([rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers.) - rust-lang/rust#143771 (Constify some more `Result` functions) - rust-lang/rust#144185 (Document guarantees of poisoning) - rust-lang/rust#144395 (update fortanix tests) - rust-lang/rust#144478 (Improve formatting of doc code blocks) - rust-lang/rust#144614 (Fortify RemoveUnneededDrops test.) - rust-lang/rust#144703 ([test][AIX] ignore extern_weak linkage test) - rust-lang/rust#144747 (compiletest: Improve diagnostics for line annotation mismatches 2) - rust-lang/rust#144756 (detect infinite recursion with tail calls in ctfe) - rust-lang/rust#144766 (Add human readable name "Cygwin") - rust-lang/rust#144782 (Properly pass path to staged `rustc` to `compiletest` self-tests) - rust-lang/rust#144786 (Cleanup the definition of `group_type`) - rust-lang/rust#144796 (Add my previous commit name to .mailmap) - rust-lang/rust#144797 (Update safety comment for new_unchecked in niche_types) - rust-lang/rust#144803 (rustc-dev-guide subtree update) r? `@ghost` `@rustbot` modify labels: rollup

Pkgsrc changes: * Adjust patches to adapt to upstream changes and new versions. * assosicated checksums Upstream changes relative to 1.89.0: Version 1.90 (2025-09-18) ========================== Language -------- - [Split up the `unknown_or_malformed_diagnostic_attributes` lint] (rust-lang/rust#140717). This lint has been split up into four finer-grained lints, with `unknown_or_malformed_diagnostic_attributes` now being the lint group that contains these lints: 1. `unknown_diagnostic_attributes`: unknown to the current compiler 2. `misplaced_diagnostic_attributes`: placed on the wrong item 3. `malformed_diagnostic_attributes`: malformed attribute syntax or options 4. `malformed_diagnostic_format_literals`: malformed format string literal - [Allow constants whose final value has references to mutable/external memory, but reject such constants as patterns] (rust-lang/rust#140942) - [Allow volatile access to non-Rust memory, including address 0] (rust-lang/rust#141260) Compiler -------- - [Use `lld` by default on `x86_64-unknown-linux-gnu`] (rust-lang/rust#140525). - [Tier 3 `musl` targets now link dynamically by default] (rust-lang/rust#144410). Affected targets: - `mips64-unknown-linux-muslabi64` - `powerpc64-unknown-linux-musl` - `powerpc-unknown-linux-musl` - `powerpc-unknown-linux-muslspe` - `riscv32gc-unknown-linux-musl` - `s390x-unknown-linux-musl` - `thumbv7neon-unknown-linux-musleabihf` Platform Support ---------------- - [Demote `x86_64-apple-darwin` to Tier 2 with host tools] (rust-lang/rust#145252) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html Libraries --------- - [Stabilize `u*::{checked,overflowing,saturating,wrapping}_sub_signed`] (rust-lang/rust#126043) - [Allow comparisons between `CStr`, `CString`, and `Cow<CStr>`] (rust-lang/rust#137268) - [Remove some unsized tuple impls since unsized tuples can't be constructed] (rust-lang/rust#138340) - [Set `MSG_NOSIGNAL` for `UnixStream`] (rust-lang/rust#140005) - [`proc_macro::Ident::new` now supports `$crate`.] (rust-lang/rust#141996) - [Guarantee the pointer returned from `Thread::into_raw` has at least 8 bytes of alignment] (rust-lang/rust#143859) Stabilized APIs --------------- - [`u{n}::checked_sub_signed`] (https://doc.rust-lang.org/stable/std/primitive.usize.html#method.checked_sub_signed) - [`u{n}::overflowing_sub_signed`] (https://doc.rust-lang.org/stable/std/primitive.usize.html#method.overflowing_sub_signed) - [`u{n}::saturating_sub_signed`] (https://doc.rust-lang.org/stable/std/primitive.usize.html#method.saturating_sub_signed) - [`u{n}::wrapping_sub_signed`] (https://doc.rust-lang.org/stable/std/primitive.usize.html#method.wrapping_sub_signed) - [`impl Copy for IntErrorKind`] (https://doc.rust-lang.org/stable/std/num/enum.IntErrorKind.html#impl-Copy-for-IntErrorKind) - [`impl Hash for IntErrorKind`] (https://doc.rust-lang.org/stable/std/num/enum.IntErrorKind.html#impl-Hash-for-IntErrorKind) - [`impl PartialEq<&CStr> for CStr`] (https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3C%26CStr%3E-for-CStr) - [`impl PartialEq<CString> for CStr`] (https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3CCString%3E-for-CStr) - [`impl PartialEq<Cow<CStr>> for CStr`] (https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3CCow%3C'_,+CStr%3E%3E-for-CStr) - [`impl PartialEq<&CStr> for CString`] (https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3C%26CStr%3E-for-CString) - [`impl PartialEq<CStr> for CString`] (https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3CCStr%3E-for-CString) - [`impl PartialEq<Cow<CStr>> for CString`] (https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3CCow%3C'_,+CStr%3E%3E-for-CString) - [`impl PartialEq<&CStr> for Cow<CStr>`] (https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3C%26CStr%3E-for-Cow%3C'_,+CStr%3E) - [`impl PartialEq<CStr> for Cow<CStr>`] (https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3CCStr%3E-for-Cow%3C'_,+CStr%3E) - [`impl PartialEq<CString> for Cow<CStr>`] (https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3CCString%3E-for-Cow%3C'_,+CStr%3E) These previously stable APIs are now stable in const contexts: - [`<[T]>::reverse`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.reverse) - [`f32::floor`] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.floor) - [`f32::ceil`] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.ceil) - [`f32::trunc`] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.trunc) - [`f32::fract`] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.fract) - [`f32::round`] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round) - [`f32::round_ties_even`] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round_ties_even) - [`f64::floor`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.floor) - [`f64::ceil`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.ceil) - [`f64::trunc`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.trunc) - [`f64::fract`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.fract) - [`f64::round`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round) - [`f64::round_ties_even`] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round_ties_even) Cargo ----- - [Add `http.proxy-cainfo` config for proxy certs] (rust-lang/cargo#15374) - [Use `gix` for `cargo package`] (rust-lang/cargo#15534) - [feat(publish): Stabilize multi-package publishing] (rust-lang/cargo#15636) Rustdoc ----- - [Add ways to collapse all impl blocks] (rust-lang/rust#141663). Previously the "Summary" button and "-" keyboard shortcut would never collapse `impl` blocks, now they do when shift is held - [Display unsafe attributes with `unsafe()` wrappers] (rust-lang/rust#143662) Compatibility Notes ------------------- - [Use `lld` by default on `x86_64-unknown-linux-gnu`] (rust-lang/rust#140525). See also <https://blog.rust-lang.org/2025/09/01/rust-lld-on-1.90.0-stable/>. - [Make `core::iter::Fuse`'s `Default` impl construct `I::default()` internally as promised in the docs instead of always being empty] (rust-lang/rust#140985) - [Set `MSG_NOSIGNAL` for `UnixStream`] (rust-lang/rust#140005) This may change program behavior but results in the same behavior as other primitives (e.g., stdout, network sockets). Programs relying on signals to terminate them should update handling of sockets to handle errors on write by exiting. - [On Unix `std::env::home_dir` will use the fallback if the `HOME` environment variable is empty] (rust-lang/rust#141840) - We now [reject unsupported `extern "{abi}"`s consistently in all positions] (rust-lang/rust#142134). This primarily affects the use of implementing traits on an `extern "{abi}"` function pointer, like `extern "stdcall" fn()`, on a platform that doesn't support that, like aarch64-unknown-linux-gnu. Direct usage of these unsupported ABI strings by declaring or defining functions was already rejected, so this is only a change for consistency. - [const-eval: error when initializing a static writes to that static] (rust-lang/rust#143084) - [Check that the `proc_macro_derive` macro has correct arguments when applied to the crate root] (rust-lang/rust#143607)

This MR contains the following updates: | Package | Update | Change | |---|---|---| | [rust](https://github.com/rust-lang/rust) | minor | `1.89.0` -> `1.90.0` | 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> ### [`v1.90.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1900-2025-09-18) [Compare Source](rust-lang/rust@1.89.0...1.90.0) \=========================== <a id="1.90-Language"></a> ## Language - [Split up the `unknown_or_malformed_diagnostic_attributes` lint](rust-lang/rust#140717). This lint has been split up into four finer-grained lints, with `unknown_or_malformed_diagnostic_attributes` now being the lint group that contains these lints: 1. `unknown_diagnostic_attributes`: unknown to the current compiler 2. `misplaced_diagnostic_attributes`: placed on the wrong item 3. `malformed_diagnostic_attributes`: malformed attribute syntax or options 4. `malformed_diagnostic_format_literals`: malformed format string literal - [Allow constants whose final value has references to mutable/external memory, but reject such constants as patterns](rust-lang/rust#140942) - [Allow volatile access to non-Rust memory, including address 0](rust-lang/rust#141260) <a id="1.90-Compiler"></a> ## Compiler - [Use `lld` by default on `x86_64-unknown-linux-gnu`](rust-lang/rust#140525). - [Tier 3 `musl` targets now link dynamically by default](rust-lang/rust#144410). Affected targets: - `mips64-unknown-linux-muslabi64` - `powerpc64-unknown-linux-musl` - `powerpc-unknown-linux-musl` - `powerpc-unknown-linux-muslspe` - `riscv32gc-unknown-linux-musl` - `s390x-unknown-linux-musl` - `thumbv7neon-unknown-linux-musleabihf` <a id="1.90-Platform-Support"></a> ## Platform Support - [Demote `x86_64-apple-darwin` to Tier 2 with host tools](rust-lang/rust#145252) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.90-Libraries"></a> ## Libraries - [Stabilize `u*::{checked,overflowing,saturating,wrapping}_sub_signed`](rust-lang/rust#126043) - [Allow comparisons between `CStr`, `CString`, and `Cow<CStr>`](rust-lang/rust#137268) - [Remove some unsized tuple impls since unsized tuples can't be constructed](rust-lang/rust#138340) - [Set `MSG_NOSIGNAL` for `UnixStream`](rust-lang/rust#140005) - [`proc_macro::Ident::new` now supports `$crate`.](rust-lang/rust#141996) - [Guarantee the pointer returned from `Thread::into_raw` has at least 8 bytes of alignment](rust-lang/rust#143859) <a id="1.90-Stabilized-APIs"></a> ## Stabilized APIs - [`u{n}::checked_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.checked_sub_signed) - [`u{n}::overflowing_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.overflowing_sub_signed) - [`u{n}::saturating_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.saturating_sub_signed) - [`u{n}::wrapping_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.wrapping_sub_signed) - [`impl Copy for IntErrorKind`](https://doc.rust-lang.org/stable/std/num/enum.IntErrorKind.html#impl-Copy-for-IntErrorKind) - [`impl Hash for IntErrorKind`](https://doc.rust-lang.org/stable/std/num/enum.IntErrorKind.html#impl-Hash-for-IntErrorKind) - [`impl PartialEq<&CStr> for CStr`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3C%26CStr%3E-for-CStr) - [`impl PartialEq<CString> for CStr`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3CCString%3E-for-CStr) - [`impl PartialEq<Cow<CStr>> for CStr`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#impl-PartialEq%3CCow%3C'_,+CStr%3E%3E-for-CStr) - [`impl PartialEq<&CStr> for CString`](https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3C%26CStr%3E-for-CString) - [`impl PartialEq<CStr> for CString`](https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3CCStr%3E-for-CString) - [`impl PartialEq<Cow<CStr>> for CString`](https://doc.rust-lang.org/stable/std/ffi/struct.CString.html#impl-PartialEq%3CCow%3C'_,+CStr%3E%3E-for-CString) - [`impl PartialEq<&CStr> for Cow<CStr>`](https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3C%26CStr%3E-for-Cow%3C'_,+CStr%3E) - [`impl PartialEq<CStr> for Cow<CStr>`](https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3CCStr%3E-for-Cow%3C'_,+CStr%3E) - [`impl PartialEq<CString> for Cow<CStr>`](https://doc.rust-lang.org/stable/std/borrow/enum.Cow.html#impl-PartialEq%3CCString%3E-for-Cow%3C'_,+CStr%3E) These previously stable APIs are now stable in const contexts: - [`<[T]>::reverse`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.reverse) - [`f32::floor`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.floor) - [`f32::ceil`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.ceil) - [`f32::trunc`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.trunc) - [`f32::fract`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.fract) - [`f32::round`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round) - [`f32::round_ties_even`](https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round_ties_even) - [`f64::floor`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.floor) - [`f64::ceil`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.ceil) - [`f64::trunc`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.trunc) - [`f64::fract`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.fract) - [`f64::round`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round) - [`f64::round_ties_even`](https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round_ties_even) <a id="1.90-Cargo"></a> ## Cargo - [Add `http.proxy-cainfo` config for proxy certs](rust-lang/cargo#15374) - [Use `gix` for `cargo package`](rust-lang/cargo#15534) - [feat(publish): Stabilize multi-package publishing](rust-lang/cargo#15636) <a id="1.90-Rustdoc"></a> ## Rustdoc - [Add ways to collapse all impl blocks](rust-lang/rust#141663). Previously the "Summary" button and "-" keyboard shortcut would never collapse `impl` blocks, now they do when shift is held - [Display unsafe attributes with `unsafe()` wrappers](rust-lang/rust#143662) <a id="1.90-Compatibility-Notes"></a> ## Compatibility Notes - [Use `lld` by default on `x86_64-unknown-linux-gnu`](rust-lang/rust#140525). See also <https://blog.rust-lang.org/2025/09/01/rust-lld-on-1.90.0-stable/>. - [Make `core::iter::Fuse`'s `Default` impl construct `I::default()` internally as promised in the docs instead of always being empty](rust-lang/rust#140985) - [Set `MSG_NOSIGNAL` for `UnixStream`](rust-lang/rust#140005) This may change program behavior but results in the same behavior as other primitives (e.g., stdout, network sockets). Programs relying on signals to terminate them should update handling of sockets to handle errors on write by exiting. - [On Unix `std::env::home_dir` will use the fallback if the `HOME` environment variable is empty](rust-lang/rust#141840) - We now [reject unsupported `extern "{abi}"`s consistently in all positions](rust-lang/rust#142134). This primarily affects the use of implementing traits on an `extern "{abi}"` function pointer, like `extern "stdcall" fn()`, on a platform that doesn't support that, like aarch64-unknown-linux-gnu. Direct usage of these unsupported ABI strings by declaring or defining functions was already rejected, so this is only a change for consistency. - [const-eval: error when initializing a static writes to that static](rust-lang/rust#143084) - [Check that the `proc_macro_derive` macro has correct arguments when applied to the crate root](rust-lang/rust#143607) </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).

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rustdoc-json: Structured attributes #142936

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Tracking issue for release notes of #143662: [rustdoc] Display unsafe attrs with edition 2024 unsafe() wrappers. #144760

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Rollup of 10 pull requests #144784

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Rollup of 17 pull requests #144814

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Draft release notes for 1.90 #145730

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[rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. #143662

[rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. #143662

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[rustdoc] Display unsafe attrs with edition 2024 `unsafe()` wrappers. #143662

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