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Gate repr(Rust)
correctly on non-ADT items
#129422
Conversation
@bors try |
Gate `repr(Rust)` correctly on non-ADT items rust-lang#114201 added `repr(Rust)` but didn't add any attribute validation to it like `repr(C)` has, to only allow it on ADT items. I consider this code to be nonsense, for example: ``` #[repr(Rust)] fn foo() {} ``` Reminder that it's different from `extern "Rust"`, which *is* valid on function items. But also this now disallows `repr(Rust)` on modules, impls, traits, etc. I'll crater it, if it looks bad then I'll add an FCW.
r? fmease |
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👌 Experiment ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more |
[CRATER] Crater Rollup This is a " crater rollup" of: * rust-lang#126452 * rust-lang#128784 * rust-lang#129392 * rust-lang#129422 * rust-lang#129543 **What is a crater rollup?** It's simply a crater job that is run on all of the containing PRs *together*, and then we can set the crates list for each of these jobs to just the failures after it's done. It should cut out on the bulk of "normal" crates that do nothing and simply just take time to build. r? `@ghost`
[CRATER] Crater Rollup This is a " crater rollup" of: * rust-lang#126452 * rust-lang#128784 * rust-lang#129392 * rust-lang#129422 * rust-lang#129543 * rust-lang#129604 **What is a crater rollup?** It's simply a crater job that is run on all of the containing PRs *together*, and then we can set the crates list for each of these jobs to just the failures after it's done. It should cut out on the bulk of "normal" crates that do nothing and simply just take time to build. r? `@ghost`
[CRATER] Crater Rollup This is a " crater rollup" of: * rust-lang#126452 * rust-lang#128784 * rust-lang#129392 * rust-lang#129422 * rust-lang#129543 * rust-lang#129604 **What is a crater rollup?** It's simply a crater job that is run on all of the containing PRs *together*, and then we can set the crates list for each of these jobs to just the failures after it's done. It should cut out on the bulk of "normal" crates that do nothing and simply just take time to build. r? `@ghost`
📝 Configuration of the ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more |
@craterbot p=1 (Bump priority is this will run quickly.) |
📝 Configuration of the ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more |
🚧 Experiment ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more |
🎉 Experiment
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Given that this is a single crate regression (https://crates.io/crates/list_tools/0.1.9-features) with no dependents, I'd say we should just break it. This is very obviously a bugfix. I would offer to put up a pull request to fix, but the crate seems to be hosted on some other code hosting site (gitee) that I don't have an account for. I have absolutely no idea what compelled the crate author to put |
I-lang-nominated
@nirenyang This PR will break your crate E.g., here: https://docs.rs/crate/list_tools/0.1.9-features/source/src/fasts.rs#10 (on |
T-lang said this specific issue was obvious to fix. @bors r=fmease rollup |
Gate `repr(Rust)` correctly on non-ADT items rust-lang#114201 added `repr(Rust)` but didn't add any attribute validation to it like `repr(C)` has, to only allow it on ADT items. I consider this code to be nonsense, for example: ``` #[repr(Rust)] fn foo() {} ``` Reminder that it's different from `extern "Rust"`, which *is* valid on function items. But also this now disallows `repr(Rust)` on modules, impls, traits, etc. I'll crater it, if it looks bad then I'll add an FCW. --- https://github.com/rust-lang/rust/labels/relnotes: Compatibility (minor breaking change).
…kingjubilee Rollup of 9 pull requests Successful merges: - rust-lang#97524 (Add `Thread::{into_raw, from_raw}`) - rust-lang#127988 (Do not ICE with incorrect empty suggestion) - rust-lang#129422 (Gate `repr(Rust)` correctly on non-ADT items) - rust-lang#129934 (Win: Open dir for sync access in remove_dir_all) - rust-lang#130450 (Reduce confusion about `make_indirect_byval` by renaming it) - rust-lang#130476 (Implement ACP 429: add `Lazy{Cell,Lock}::get[_mut]` and `force_mut`) - rust-lang#130487 (Update the minimum external LLVM to 18) - rust-lang#130513 (Clarify docs for std::fs::File::write) - rust-lang#130522 ([Clippy] Swap `manual_retain` to use diagnostic items instead of paths) r? `@ghost` `@rustbot` modify labels: rollup
Rollup merge of rust-lang#129422 - compiler-errors:repr-rust, r=fmease Gate `repr(Rust)` correctly on non-ADT items rust-lang#114201 added `repr(Rust)` but didn't add any attribute validation to it like `repr(C)` has, to only allow it on ADT items. I consider this code to be nonsense, for example: ``` #[repr(Rust)] fn foo() {} ``` Reminder that it's different from `extern "Rust"`, which *is* valid on function items. But also this now disallows `repr(Rust)` on modules, impls, traits, etc. I'll crater it, if it looks bad then I'll add an FCW. --- https://github.com/rust-lang/rust/labels/relnotes: Compatibility (minor breaking change).
Pkgsrc changes compared to rust182: * Remove patches related to rust-lang/rust#130110, which is now integrated upstream. * Remove patch to vendor/cc-1.0.79, now integrated in the current vendored cc crate. * Checksum updates. TODO: * Cross-compilation fails ref. rust-lang/rust#133629 Upstream changes: Version 1.83.0 (2024-11-28) ========================== Language -------- - [Stabilize `&mut`, `*mut`, `&Cell`, and `*const Cell` in const.] (rust-lang/rust#129195) - [Allow creating references to statics in `const` initializers.] (rust-lang/rust#129759) - [Implement raw lifetimes and labels (`'r#ident`).] (rust-lang/rust#126452) - [Define behavior when atomic and non-atomic reads race.] (rust-lang/rust#128778) - [Non-exhaustive structs may now be empty.] (rust-lang/rust#128934) - [Disallow implicit coercions from places of type `!`] (rust-lang/rust#129392) - [`const extern` functions can now be defined for other calling conventions.] (rust-lang/rust#129753) - [Stabilize `expr_2021` macro fragment specifier in all editions.] (rust-lang/rust#129972) - [The `non_local_definitions` lint now fires on less code and warns by default.] (rust-lang/rust#127117) Compiler -------- - [Deprecate unsound `-Csoft-float` flag.] (rust-lang/rust#129897) - Add many new tier 3 targets: - [`aarch64_unknown_nto_qnx700`] (rust-lang/rust#127897) - [`arm64e-apple-tvos`] (rust-lang/rust#130614) - [`armv7-rtems-eabihf`] (rust-lang/rust#127021) - [`loongarch64-unknown-linux-ohos`] (rust-lang/rust#130750) - [`riscv32-wrs-vxworks` and `riscv64-wrs-vxworks`] (rust-lang/rust#130549) - [`riscv32{e|em|emc}-unknown-none-elf`] (rust-lang/rust#130555) - [`x86_64-unknown-hurd-gnu`] (rust-lang/rust#128345) - [`x86_64-unknown-trusty`] (rust-lang/rust#130453) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - [Implement `PartialEq` for `ExitCode`.] (rust-lang/rust#127633) - [Document that `catch_unwind` can deal with foreign exceptions without UB, although the exact behavior is unspecified.] (rust-lang/rust#128321) - [Implement `Default` for `HashMap`/`HashSet` iterators that don't already have it.] (rust-lang/rust#128711) - [Bump Unicode to version 16.0.0.] (rust-lang/rust#130183) - [Change documentation of `ptr::add`/`sub` to not claim equivalence with `offset`.] (rust-lang/rust#130229). Stabilized APIs --------------- - [`BufRead::skip_until`] (https://doc.rust-lang.org/stable/std/io/trait.BufRead.html#method.skip_until) - [`ControlFlow::break_value`] (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.break_value) - [`ControlFlow::continue_value`] (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.continue_value) - [`ControlFlow::map_break`] (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_break) - [`ControlFlow::map_continue`] (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_continue) - [`DebugList::finish_non_exhaustive`] (https://doc.rust-lang.org/stable/core/fmt/struct.DebugList.html#method.finish_non_exhaustive) - [`DebugMap::finish_non_exhaustive`] (https://doc.rust-lang.org/stable/core/fmt/struct.DebugMap.html#method.finish_non_exhaustive) - [`DebugSet::finish_non_exhaustive`] (https://doc.rust-lang.org/stable/core/fmt/struct.DebugSet.html#method.finish_non_exhaustive) - [`DebugTuple::finish_non_exhaustive`] (https://doc.rust-lang.org/stable/core/fmt/struct.DebugTuple.html#method.finish_non_exhaustive) - [`ErrorKind::ArgumentListTooLong`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ArgumentListTooLong) - [`ErrorKind::Deadlock`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.Deadlock) - [`ErrorKind::DirectoryNotEmpty`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.DirectoryNotEmpty) - [`ErrorKind::ExecutableFileBusy`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ExecutableFileBusy) - [`ErrorKind::FileTooLarge`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.FileTooLarge) - [`ErrorKind::HostUnreachable`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.HostUnreachable) - [`ErrorKind::IsADirectory`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.IsADirectory) - [`ErrorKind::NetworkDown`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkDown) - [`ErrorKind::NetworkUnreachable`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkUnreachable) - [`ErrorKind::NotADirectory`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotADirectory) - [`ErrorKind::NotSeekable`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotSeekable) - [`ErrorKind::ReadOnlyFilesystem`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ReadOnlyFilesystem) - [`ErrorKind::ResourceBusy`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ResourceBusy) - [`ErrorKind::StaleNetworkFileHandle`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StaleNetworkFileHandle) - [`ErrorKind::StorageFull`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StorageFull) - [`ErrorKind::TooManyLinks`] (https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.TooManyLinks) - [`Option::get_or_insert_default`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.get_or_insert_default) - [`Waker::data`] (https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.data) - [`Waker::new`] (https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.new) - [`Waker::vtable`] (https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.vtable) - [`char::MIN`] (https://doc.rust-lang.org/stable/core/primitive.char.html#associatedconstant.MIN) - [`hash_map::Entry::insert_entry`] (https://doc.rust-lang.org/stable/std/collections/hash_map/enum.Entry.html#method.insert_entry) - [`hash_map::VacantEntry::insert_entry`] (https://doc.rust-lang.org/stable/std/collections/hash_map/struct.VacantEntry.html#method.insert_entry) These APIs are now stable in const contexts: - [`Cell::into_inner`] (https://doc.rust-lang.org/stable/core/cell/struct.Cell.html#method.into_inner) - [`Duration::as_secs_f32`] (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f32) - [`Duration::as_secs_f64`] (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f64) - [`Duration::div_duration_f32`] (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f32) - [`Duration::div_duration_f64`] (https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f64) - [`MaybeUninit::as_mut_ptr`] (https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.as_mut_ptr) - [`NonNull::as_mut`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.as_mut) - [`NonNull::copy_from`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from) - [`NonNull::copy_from_nonoverlapping`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from_nonoverlapping) - [`NonNull::copy_to`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to) - [`NonNull::copy_to_nonoverlapping`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to_nonoverlapping) - [`NonNull::slice_from_raw_parts`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.slice_from_raw_parts) - [`NonNull::write`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write) - [`NonNull::write_bytes`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_bytes) - [`NonNull::write_unaligned`] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_unaligned) - [`OnceCell::into_inner`] (https://doc.rust-lang.org/stable/core/cell/struct.OnceCell.html#method.into_inner) - [`Option::as_mut`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.as_mut) - [`Option::expect`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.expect) - [`Option::replace`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.replace) - [`Option::take`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.take) - [`Option::unwrap`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap) - [`Option::unwrap_unchecked`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap_unchecked) - [`Option::<&_>::copied`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied) - [`Option::<&mut _>::copied`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied-1) - [`Option::<Option<_>>::flatten`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.flatten) - [`Option::<Result<_, _>>::transpose`] (https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.transpose) - [`RefCell::into_inner`] (https://doc.rust-lang.org/stable/core/cell/struct.RefCell.html#method.into_inner) - [`Result::as_mut`] (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.as_mut) - [`Result::<&_, _>::copied`] (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied) - [`Result::<&mut _, _>::copied`] (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied-1) - [`Result::<Option<_>, _>::transpose`] (https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.transpose) - [`UnsafeCell::get_mut`] (https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.get_mut) - [`UnsafeCell::into_inner`] (https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.into_inner) - [`array::from_mut`] (https://doc.rust-lang.org/stable/core/array/fn.from_mut.html) - [`char::encode_utf8`] (https://doc.rust-lang.org/stable/core/primitive.char.html#method.encode_utf8) - [`{float}::classify`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.classify) - [`{float}::is_finite`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_finite) - [`{float}::is_infinite`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_infinite) - [`{float}::is_nan`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_nan) - [`{float}::is_normal`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_normal) - [`{float}::is_sign_negative`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_negative) - [`{float}::is_sign_positive`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_positive) - [`{float}::is_subnormal`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_subnormal) - [`{float}::from_bits`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_bits) - [`{float}::from_be_bytes`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_be_bytes) - [`{float}::from_le_bytes`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_le_bytes) - [`{float}::from_ne_bytes`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_ne_bytes) - [`{float}::to_bits`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_bits) - [`{float}::to_be_bytes`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_be_bytes) - [`{float}::to_le_bytes`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_le_bytes) - [`{float}::to_ne_bytes`] (https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_ne_bytes) - [`mem::replace`] (https://doc.rust-lang.org/stable/core/mem/fn.replace.html) - [`ptr::replace`] (https://doc.rust-lang.org/stable/core/ptr/fn.replace.html) - [`ptr::slice_from_raw_parts_mut`] (https://doc.rust-lang.org/stable/core/ptr/fn.slice_from_raw_parts_mut.html) - [`ptr::write`] (https://doc.rust-lang.org/stable/core/ptr/fn.write.html) - [`ptr::write_unaligned`] (https://doc.rust-lang.org/stable/core/ptr/fn.write_unaligned.html) - [`<*const _>::copy_to`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to) - [`<*const _>::copy_to_nonoverlapping`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping) - [`<*mut _>::copy_from`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from) - [`<*mut _>::copy_from_nonoverlapping`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from_nonoverlapping) - [`<*mut _>::copy_to`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to-1) - [`<*mut _>::copy_to_nonoverlapping`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping-1) - [`<*mut _>::write`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write) - [`<*mut _>::write_bytes`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_bytes) - [`<*mut _>::write_unaligned`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_unaligned) - [`slice::from_mut`] (https://doc.rust-lang.org/stable/core/slice/fn.from_mut.html) - [`slice::from_raw_parts_mut`] (https://doc.rust-lang.org/stable/core/slice/fn.from_raw_parts_mut.html) - [`<[_]>::first_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_mut) - [`<[_]>::last_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_mut) - [`<[_]>::first_chunk_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_chunk_mut) - [`<[_]>::last_chunk_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_chunk_mut) - [`<[_]>::split_at_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut) - [`<[_]>::split_at_mut_checked`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_checked) - [`<[_]>::split_at_mut_unchecked`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked) - [`<[_]>::split_first_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_mut) - [`<[_]>::split_last_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_mut) - [`<[_]>::split_first_chunk_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_chunk_mut) - [`<[_]>::split_last_chunk_mut`] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_chunk_mut) - [`str::as_bytes_mut`] (https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_bytes_mut) - [`str::as_mut_ptr`] (https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_mut_ptr) - [`str::from_utf8_unchecked_mut`] (https://doc.rust-lang.org/stable/core/str/fn.from_utf8_unchecked_mut.html) Cargo ----- - [Introduced a new `CARGO_MANIFEST_PATH` environment variable, similar to `CARGO_MANIFEST_DIR` but pointing directly to the manifest file.] (rust-lang/cargo#14404) - [Added `package.autolib` to the manifest, allowing `[lib]` auto-discovery to be disabled.] (rust-lang/cargo#14591) - [Declare support level for each crate in Cargo's Charter / crate docs.] (rust-lang/cargo#14600) - [Declare new Intentional Artifacts as 'small' changes.] (rust-lang/cargo#14599) Rustdoc ------- - [The sidebar / hamburger menu table of contents now includes the `# headers` from the main item's doc comment] (rust-lang/rust#120736). This is similar to a third-party feature provided by the rustdoc-search-enhancements browser extension. Compatibility Notes ------------------- - [Warn against function pointers using unsupported ABI strings.] (rust-lang/rust#128784) - [Check well-formedness of the source type's signature in fn pointer casts.] (rust-lang/rust#129021) This partly closes a soundness hole that comes when casting a function item to function pointer - [Use equality instead of subtyping when resolving type dependent paths.] (rust-lang/rust#129073) - Linking on macOS now correctly includes Rust's default deployment target. Due to a linker bug, you might have to pass `MACOSX_DEPLOYMENT_TARGET` or fix your `#[link]` attributes to point to the correct frameworks. See <rust-lang/rust#129369>. - [Rust will now correctly raise an error for `repr(Rust)` written on non-`struct`/`enum`/`union` items, since it previous did not have any effect.] (rust-lang/rust#129422) - The future incompatibility lint `deprecated_cfg_attr_crate_type_name` [has been made into a hard error] (rust-lang/rust#129670). It was used to deny usage of `#![crate_type]` and `#![crate_name]` attributes in `#![cfg_attr]`, which required a hack in the compiler to be able to change the used crate type and crate name after cfg expansion. Users can use `--crate-type` instead of `#![cfg_attr(..., crate_type = "...")]` and `--crate-name` instead of `#![cfg_attr(..., crate_name = "...")]` when running `rustc`/`cargo rustc` on the command line. Use of those two attributes outside of `#![cfg_attr]` continue to be fully supported. - Until now, paths into the sysroot were always prefixed with `/rustc/$hash` in diagnostics, codegen, backtrace, e.g. ``` thread 'main' panicked at 'hello world', map-panic.rs:2:50 stack backtrace: 0: std::panicking::begin_panic at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:616:12 1: map_panic::main::{{closure}} at ./map-panic.rs:2:50 2: core::option::Option<T>::map at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/option.rs:929:29 3: map_panic::main at ./map-panic.rs:2:30 4: core::ops::function::FnOnce::call_once at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5 note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. ``` [RFC 3127 said] (https://rust-lang.github.io/rfcs/3127-trim-paths.html#changing-handling-of-sysroot-path-in-rustc) > We want to change this behaviour such that, when `rust-src` source files can be discovered, the virtual path is discarded and therefore the local path will be embedded, unless there is a `--remap-path-prefix` that causes this local path to be remapped in the usual way. [#129687](rust-lang/rust#129687) implements this behaviour, when `rust-src` is present at compile time, `rustc` replaces `/rustc/$hash` with a real path into the local `rust-src` component with best effort. To sanitize this, users must explicitly supply `--remap-path-prefix=<path to rust-src>=foo` or not have the `rust-src` component installed. - The allow-by-default `missing_docs` lint used to disable itself when invoked through `rustc --test`/`cargo test`, resulting in `#[expect(missing_docs)]` emitting false positives due to the expectation being wrongly unfulfilled. This behavior [has now been removed] (rust-lang/rust#130025), which allows `#[expect(missing_docs)]` to be fulfilled in all scenarios, but will also report new `missing_docs` diagnostics for publicly reachable `#[cfg(test)]` items, [integration test] (https://doc.rust-lang.org/cargo/reference/cargo-targets.html#integration-tests) crate-level documentation, and publicly reachable items in integration tests. - [The `armv8r-none-eabihf` target now uses the Armv8-R required set of floating-point features.] (rust-lang/rust#130295) - [Fix a soundness bug where rustc wouldn't detect unconstrained higher-ranked lifetimes in a `dyn Trait`'s associated types that occur due to supertraits.] (rust-lang/rust#130367) - [Update the minimum external LLVM version to 18.] (rust-lang/rust#130487) - [Remove `aarch64-fuchsia` and `x86_64-fuchsia` target aliases in favor of `aarch64-unknown-fuchsia` and `x86_64-unknown-fuchsia` respectively.] (rust-lang/rust#130657) - [The ABI-level exception class of a Rust panic is now encoded with native-endian bytes, so it is legible in hex dumps.] (rust-lang/rust#130897) - [Visual Studio 2013 is no longer supported for MSVC targets.] (rust-lang/rust#131070) - [The sysroot no longer contains the `std` dynamic library in its top-level `lib/` dir.] (rust-lang/rust#131188)
This MR contains the following updates: | Package | Update | Change | |---|---|---| | [rust](https://github.com/rust-lang/rust) | minor | `1.82.0` -> `1.83.0` | 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> ### [`v1.83.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1830-2024-11-28) [Compare Source](rust-lang/rust@1.82.0...1.83.0) \========================== <a id="1.83.0-Language"></a> ## Language - [Stabilize `&mut`, `*mut`, `&Cell`, and `*const Cell` in const.](rust-lang/rust#129195) - [Allow creating references to statics in `const` initializers.](rust-lang/rust#129759) - [Implement raw lifetimes and labels (`'r#ident`).](rust-lang/rust#126452) - [Define behavior when atomic and non-atomic reads race.](rust-lang/rust#128778) - [Non-exhaustive structs may now be empty.](rust-lang/rust#128934) - [Disallow implicit coercions from places of type `!`](rust-lang/rust#129392) - [`const extern` functions can now be defined for other calling conventions.](rust-lang/rust#129753) - [Stabilize `expr_2021` macro fragment specifier in all editions.](rust-lang/rust#129972) - [The `non_local_definitions` lint now fires on less code and warns by default.](rust-lang/rust#127117) <a id="1.83.0-Compiler"></a> ## Compiler - [Deprecate unsound `-Csoft-float` flag.](rust-lang/rust#129897) - Add many new tier 3 targets: - [`aarch64_unknown_nto_qnx700`](rust-lang/rust#127897) - [`arm64e-apple-tvos`](rust-lang/rust#130614) - [`armv7-rtems-eabihf`](rust-lang/rust#127021) - [`loongarch64-unknown-linux-ohos`](rust-lang/rust#130750) - [`riscv32-wrs-vxworks` and `riscv64-wrs-vxworks`](rust-lang/rust#130549) - [`riscv32{e|em|emc}-unknown-none-elf`](rust-lang/rust#130555) - [`x86_64-unknown-hurd-gnu`](rust-lang/rust#128345) - [`x86_64-unknown-trusty`](rust-lang/rust#130453) Refer to Rust's \[platform support page]\[platform-support-doc] for more information on Rust's tiered platform support. <a id="1.83.0-Libraries"></a> ## Libraries - [Implement `PartialEq` for `ExitCode`.](rust-lang/rust#127633) - [Document that `catch_unwind` can deal with foreign exceptions without UB, although the exact behavior is unspecified.](rust-lang/rust#128321) - [Implement `Default` for `HashMap`/`HashSet` iterators that don't already have it.](rust-lang/rust#128711) - [Bump Unicode to version 16.0.0.](rust-lang/rust#130183) - [Change documentation of `ptr::add`/`sub` to not claim equivalence with `offset`.](rust-lang/rust#130229) <a id="1.83.0-Stabilized-APIs"></a> ## Stabilized APIs - [`BufRead::skip_until`](https://doc.rust-lang.org/stable/std/io/trait.BufRead.html#method.skip_until) - [`ControlFlow::break_value`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.break_value) - [`ControlFlow::continue_value`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.continue_value) - [`ControlFlow::map_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_break) - [`ControlFlow::map_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.map_continue) - [`DebugList::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugList.html#method.finish_non_exhaustive) - [`DebugMap::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugMap.html#method.finish_non_exhaustive) - [`DebugSet::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugSet.html#method.finish_non_exhaustive) - [`DebugTuple::finish_non_exhaustive`](https://doc.rust-lang.org/stable/core/fmt/struct.DebugTuple.html#method.finish_non_exhaustive) - [`ErrorKind::ArgumentListTooLong`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ArgumentListTooLong) - [`ErrorKind::Deadlock`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.Deadlock) - [`ErrorKind::DirectoryNotEmpty`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.DirectoryNotEmpty) - [`ErrorKind::ExecutableFileBusy`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ExecutableFileBusy) - [`ErrorKind::FileTooLarge`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.FileTooLarge) - [`ErrorKind::HostUnreachable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.HostUnreachable) - [`ErrorKind::IsADirectory`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.IsADirectory) - [`ErrorKind::NetworkDown`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkDown) - [`ErrorKind::NetworkUnreachable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NetworkUnreachable) - [`ErrorKind::NotADirectory`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotADirectory) - [`ErrorKind::NotSeekable`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.NotSeekable) - [`ErrorKind::ReadOnlyFilesystem`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ReadOnlyFilesystem) - [`ErrorKind::ResourceBusy`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.ResourceBusy) - [`ErrorKind::StaleNetworkFileHandle`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StaleNetworkFileHandle) - [`ErrorKind::StorageFull`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.StorageFull) - [`ErrorKind::TooManyLinks`](https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#variant.TooManyLinks) - [`Option::get_or_insert_default`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.get_or_insert_default) - [`Waker::data`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.data) - [`Waker::new`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.new) - [`Waker::vtable`](https://doc.rust-lang.org/stable/core/task/struct.Waker.html#method.vtable) - [`char::MIN`](https://doc.rust-lang.org/stable/core/primitive.char.html#associatedconstant.MIN) - [`hash_map::Entry::insert_entry`](https://doc.rust-lang.org/stable/std/collections/hash_map/enum.Entry.html#method.insert_entry) - [`hash_map::VacantEntry::insert_entry`](https://doc.rust-lang.org/stable/std/collections/hash_map/struct.VacantEntry.html#method.insert_entry) These APIs are now stable in const contexts: - [`Cell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.Cell.html#method.into_inner) - [`Duration::as_secs_f32`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f32) - [`Duration::as_secs_f64`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.as_secs_f64) - [`Duration::div_duration_f32`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f32) - [`Duration::div_duration_f64`](https://doc.rust-lang.org/stable/core/time/struct.Duration.html#method.div_duration_f64) - [`MaybeUninit::as_mut_ptr`](https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.as_mut_ptr) - [`NonNull::as_mut`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.as_mut) - [`NonNull::copy_from`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from) - [`NonNull::copy_from_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_from_nonoverlapping) - [`NonNull::copy_to`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to) - [`NonNull::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.copy_to_nonoverlapping) - [`NonNull::slice_from_raw_parts`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.slice_from_raw_parts) - [`NonNull::write`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write) - [`NonNull::write_bytes`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_bytes) - [`NonNull::write_unaligned`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.write_unaligned) - [`OnceCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.OnceCell.html#method.into_inner) - [`Option::as_mut`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.as_mut) - [`Option::expect`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.expect) - [`Option::replace`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.replace) - [`Option::take`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.take) - [`Option::unwrap`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap) - [`Option::unwrap_unchecked`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.unwrap_unchecked) - [`Option::<&_>::copied`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied) - [`Option::<&mut _>::copied`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.copied-1) - [`Option::<Option<_>>::flatten`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.flatten) - [`Option::<Result<_, _>>::transpose`](https://doc.rust-lang.org/stable/core/option/enum.Option.html#method.transpose) - [`RefCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.RefCell.html#method.into_inner) - [`Result::as_mut`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.as_mut) - [`Result::<&_, _>::copied`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied) - [`Result::<&mut _, _>::copied`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.copied-1) - [`Result::<Option<_>, _>::transpose`](https://doc.rust-lang.org/stable/core/result/enum.Result.html#method.transpose) - [`UnsafeCell::get_mut`](https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.get_mut) - [`UnsafeCell::into_inner`](https://doc.rust-lang.org/stable/core/cell/struct.UnsafeCell.html#method.into_inner) - [`array::from_mut`](https://doc.rust-lang.org/stable/core/array/fn.from_mut.html) - [`char::encode_utf8`](https://doc.rust-lang.org/stable/core/primitive.char.html#method.encode_utf8) - [`{float}::classify`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.classify) - [`{float}::is_finite`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_finite) - [`{float}::is_infinite`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_infinite) - [`{float}::is_nan`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_nan) - [`{float}::is_normal`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_normal) - [`{float}::is_sign_negative`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_negative) - [`{float}::is_sign_positive`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_sign_positive) - [`{float}::is_subnormal`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.is_subnormal) - [`{float}::from_bits`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_bits) - [`{float}::from_be_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_be_bytes) - [`{float}::from_le_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_le_bytes) - [`{float}::from_ne_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.from_ne_bytes) - [`{float}::to_bits`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_bits) - [`{float}::to_be_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_be_bytes) - [`{float}::to_le_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_le_bytes) - [`{float}::to_ne_bytes`](https://doc.rust-lang.org/stable/core/primitive.f64.html#method.to_ne_bytes) - [`mem::replace`](https://doc.rust-lang.org/stable/core/mem/fn.replace.html) - [`ptr::replace`](https://doc.rust-lang.org/stable/core/ptr/fn.replace.html) - [`ptr::slice_from_raw_parts_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.slice_from_raw_parts_mut.html) - [`ptr::write`](https://doc.rust-lang.org/stable/core/ptr/fn.write.html) - [`ptr::write_unaligned`](https://doc.rust-lang.org/stable/core/ptr/fn.write_unaligned.html) - [`<*const _>::copy_to`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to) - [`<*const _>::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping) - [`<*mut _>::copy_from`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from) - [`<*mut _>::copy_from_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_from_nonoverlapping) - [`<*mut _>::copy_to`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to-1) - [`<*mut _>::copy_to_nonoverlapping`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.copy_to_nonoverlapping-1) - [`<*mut _>::write`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write) - [`<*mut _>::write_bytes`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_bytes) - [`<*mut _>::write_unaligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.write_unaligned) - [`slice::from_mut`](https://doc.rust-lang.org/stable/core/slice/fn.from_mut.html) - [`slice::from_raw_parts_mut`](https://doc.rust-lang.org/stable/core/slice/fn.from_raw_parts_mut.html) - [`<[_]>::first_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_mut) - [`<[_]>::last_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_mut) - [`<[_]>::first_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.first_chunk_mut) - [`<[_]>::last_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.last_chunk_mut) - [`<[_]>::split_at_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut) - [`<[_]>::split_at_mut_checked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_checked) - [`<[_]>::split_at_mut_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked) - [`<[_]>::split_first_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_mut) - [`<[_]>::split_last_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_mut) - [`<[_]>::split_first_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_first_chunk_mut) - [`<[_]>::split_last_chunk_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_last_chunk_mut) - [`str::as_bytes_mut`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_bytes_mut) - [`str::as_mut_ptr`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.as_mut_ptr) - [`str::from_utf8_unchecked_mut`](https://doc.rust-lang.org/stable/core/str/fn.from_utf8\_unchecked_mut.html) <a id="1.83.0-Cargo"></a> ## Cargo - [Introduced a new `CARGO_MANIFEST_PATH` environment variable, similar to `CARGO_MANIFEST_DIR` but pointing directly to the manifest file.](rust-lang/cargo#14404) - [Added `package.autolib` to the manifest, allowing `[lib]` auto-discovery to be disabled.](rust-lang/cargo#14591) - [Declare support level for each crate in Cargo's Charter / crate docs.](rust-lang/cargo#14600) - [Declare new Intentional Artifacts as 'small' changes.](rust-lang/cargo#14599) <a id="1.83-Rustdoc"></a> ## Rustdoc - [The sidebar / hamburger menu table of contents now includes the `# headers` from the main item's doc comment](rust-lang/rust#120736). This is similar to a third-party feature provided by the rustdoc-search-enhancements browser extension. <a id="1.83.0-Compatibility-Notes"></a> ## Compatibility Notes - [Warn against function pointers using unsupported ABI strings.](rust-lang/rust#128784) - [Check well-formedness of the source type's signature in fn pointer casts.](rust-lang/rust#129021) This partly closes a soundness hole that comes when casting a function item to function pointer - [Use equality instead of subtyping when resolving type dependent paths.](rust-lang/rust#129073) - Linking on macOS now correctly includes Rust's default deployment target. Due to a linker bug, you might have to pass `MACOSX_DEPLOYMENT_TARGET` or fix your `#[link]` attributes to point to the correct frameworks. See [#​129369](rust-lang/rust#129369). - [Rust will now correctly raise an error for `repr(Rust)` written on non-`struct`/`enum`/`union` items, since it previous did not have any effect.](rust-lang/rust#129422) - The future incompatibility lint `deprecated_cfg_attr_crate_type_name` [has been made into a hard error](rust-lang/rust#129670). It was used to deny usage of `#![crate_type]` and `#![crate_name]` attributes in `#![cfg_attr]`, which required a hack in the compiler to be able to change the used crate type and crate name after cfg expansion. Users can use `--crate-type` instead of `#![cfg_attr(..., crate_type = "...")]` and `--crate-name` instead of `#![cfg_attr(..., crate_name = "...")]` when running `rustc`/`cargo rustc` on the command line. Use of those two attributes outside of `#![cfg_attr]` continue to be fully supported. - Until now, paths into the sysroot were always prefixed with `/rustc/$hash` in diagnostics, codegen, backtrace, e.g. thread 'main' panicked at 'hello world', map-panic.rs:2:50 stack backtrace: 0: std::panicking::begin_panic at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:616:12 1: map_panic::main::{{closure}} at ./map-panic.rs:2:50 2: core::option::Option<T>::map at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/option.rs:929:29 3: map_panic::main at ./map-panic.rs:2:30 4: core::ops::function::FnOnce::call_once at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5 note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. [RFC 3127 said](https://rust-lang.github.io/rfcs/3127-trim-paths.html#changing-handling-of-sysroot-path-in-rustc) > We want to change this behaviour such that, when `rust-src` source files can be discovered, the virtual path is discarded and therefore the local path will be embedded, unless there is a `--remap-path-prefix` that causes this local path to be remapped in the usual way. [#​129687](rust-lang/rust#129687) implements this behaviour, when `rust-src` is present at compile time, `rustc` replaces `/rustc/$hash` with a real path into the local `rust-src` component with best effort. To sanitize this, users must explicitly supply `--remap-path-prefix=<path to rust-src>=foo` or not have the `rust-src` component installed. - The allow-by-default `missing_docs` lint used to disable itself when invoked through `rustc --test`/`cargo test`, resulting in `#[expect(missing_docs)]` emitting false positives due to the expectation being wrongly unfulfilled. This behavior [has now been removed](rust-lang/rust#130025), which allows `#[expect(missing_docs)]` to be fulfilled in all scenarios, but will also report new `missing_docs` diagnostics for publicly reachable `#[cfg(test)]` items, [integration test](https://doc.rust-lang.org/cargo/reference/cargo-targets.html#integration-tests) crate-level documentation, and publicly reachable items in integration tests. - [The `armv8r-none-eabihf` target now uses the Armv8-R required set of floating-point features.](rust-lang/rust#130295) - [Fix a soundness bug where rustc wouldn't detect unconstrained higher-ranked lifetimes in a `dyn Trait`'s associated types that occur due to supertraits.](rust-lang/rust#130367) - [Update the minimum external LLVM version to 18.](rust-lang/rust#130487) - [Remove `aarch64-fuchsia` and `x86_64-fuchsia` target aliases in favor of `aarch64-unknown-fuchsia` and `x86_64-unknown-fuchsia` respectively.](rust-lang/rust#130657) - [The ABI-level exception class of a Rust panic is now encoded with native-endian bytes, so it is legible in hex dumps.](rust-lang/rust#130897) - [Visual Studio 2013 is no longer supported for MSVC targets.](rust-lang/rust#131070) - [The sysroot no longer contains the `std` dynamic library in its top-level `lib/` dir.](rust-lang/rust#131188) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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#114201 added
repr(Rust)
but didn't add any attribute validation to it likerepr(C)
has, to only allow it on ADT items.I consider this code to be nonsense, for example:
Reminder that it's different from
extern "Rust"
, which is valid on function items. But also this now disallowsrepr(Rust)
on modules, impls, traits, etc.I'll crater it, if it looks bad then I'll add an FCW.
relnotesMarks issues that should be documented in the release notes of the next release.
: Compatibility (minor breaking change).