stabilize const_extern_fn by folkertdev · Pull Request #129753 · rust-lang/rust (original) (raw)

Conversation

This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.Learn more about bidirectional Unicode characters

[ Show hidden characters]({{ revealButtonHref }})

closes #64926

tracking issue: #64926
reference PR: rust-lang/reference#1596

Stabilizaton Report

Summary

Using const extern "Rust" and const extern "C" was already stabilized (since version 1.62.0, see #95346). This PR stabilizes the other calling conventions: it is now possible to write const unsafe extern "calling-convention" fn and const extern "calling-convention" fn for any supported calling convention:

const extern "C-unwind" fn foo1(val: u8) -> u8 { val + 1} const extern "stdcall" fn foo2(val: u8) -> u8 { val + 1} const unsafe extern "C-unwind" fn bar1(val: bool) -> bool { !val } const unsafe extern "stdcall" fn bar2(val: bool) -> bool { !val }

This can be used to const-ify an extern fn, or conversely, to make a const fn callable from external code.

r? T-lang

cc @RalfJung

Failed to set assignee to t-lang: invalid assignee

Note: Only org members with at least the repository "read" role, users with write permissions, or people who have commented on the PR may be assigned.

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.

T-lang

Relevant to the language team, which will review and decide on the PR/issue.

labels

Aug 29, 2024

The unstable book is auto-generated, AFAIK.

Cc @rust-lang/wg-const-eval
As already mentioned in #64926, I see no reason why other ABIs would somehow behave differently here.

This comment has been minimized.

@folkertdev: Perhaps you're working on it in parallel, but you'll want to add more in the way of a stabilization report to the PR description here (see e.g. the recent stabilizations from RalfJ for some examples).

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

Comment on lines 20 to 22

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

if anyone from clippy is following along, is there some equivalent of CURRENT_RUSTC_VERSION here? In any case given that we're close to a rust release this may or may not be accurate when merged

@traviscross allright I copied and slightly updated some text from the tracking issue. Let me know if there's something else that should be included.

Why hadn't we stabilized this any sooner? I.e., are there any tricky questions here, open questions that have recently been answered, or recent implementation work done to make this ready?

(Or has this been in good shape for a long time and was just waiting on a stabilization PR?)

I have no idea why #95346 only stabilized "Rust" and "C". Maybe @Aaron1011 remembers?

traviscross removed the T-compiler

Relevant to the compiler team, which will review and decide on the PR/issue.

label

Sep 4, 2024

@rfcbot fcp merge

We talked about this in triage, and this sounded good to us all.

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

• @joshtriplett
• @nikomatsakis
• @pnkfelix
• @scottmcm
• @tmandry
• @traviscross

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!

cc @rust-lang/lang-advisors: FCP proposed for lang, please feel free to register concerns.
See this document for info about what commands tagged team members can give me.

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.

cool, just fixed a merge conflict and squashed all commits into one

r=me for the rustc side. The clippy side seems reasonably simple but I think the test can be merged with another test file now.

📌 Commit a528f4e has been approved by RalfJung

It is now in the queue for this repository.

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

Sep 14, 2024

Finished benchmarking commit (4f1be92): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

Max RSS (memory usage)

Results (primary 2.4%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 758.697s -> 760.09s (0.18%)
Artifact size: 340.54 MiB -> 340.51 MiB (-0.01%)

wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request

Nov 30, 2024

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 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)

tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request

Dec 5, 2024

This MR contains the following updates:

MR created with the help of el-capitano/tools/renovate-bot.

Proposed changes to behavior should be submitted there as MRs.

Release Notes

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.

Veykril added a commit to rust-lang/fls that referenced this pull request

Dec 9, 2024

Veykril added a commit to rust-lang/fls that referenced this pull request

Dec 9, 2024

Veykril added a commit to rust-lang/fls that referenced this pull request

Dec 10, 2024

tshepang pushed a commit to ferrocene/ferrocene that referenced this pull request

Dec 18, 2024

netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request

Feb 24, 2025

Pkgsrc changes:

• Introduce use of TOOL* settings.
• On NetBSD, use patchelf in the install phase to fix up RPATHs.
• Reduce verbosity by dropping -v flag to x.py invocations.
• 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.

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 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)

Labels

disposition-merge

This issue / PR is in PFCP or FCP with a disposition to merge it.

finished-final-comment-period

The final comment period is finished for this PR / Issue.

merged-by-bors

This PR was explicitly merged by bors.

S-waiting-on-bors

Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

T-lang

Relevant to the language team, which will review and decide on the PR/issue.