Always display stability version even if it's the same as the containing item by GuillaumeGomez · Pull Request #118441 · rust-lang/rust (original) (raw)
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Fixes #118439.
Currently, if the containing item's version is the same as the item's version (like a method), we don't display it on the item.
This was something done on purpose as you can see here. It was implemented in #30686.
I think we should change this because on pages with a lot of items, if someone arrives (through the search or a link) to an item far below the page, they won't know the stability version unless they scroll to the top, which isn't great.
You can see the result here.
r? @notriddle
rustbot added S-waiting-on-review
Status: Awaiting review from the assignee but also interested parties.
Relevant to the rustdoc team, which will review and decide on the PR/issue.
labels
Some changes occurred in src/librustdoc/clean/types.rs
cc @camelid
This is definitely going to make the standard library docs bigger. Let's see how much!
@bors try
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bors added a commit to rust-lang-ci/rust that referenced this pull request
☀️ Try build successful - checks-actions
Build commit: 4d962f0 (4d962f0f089466aec16928808dde2312d85fe7c1)
This comment has been minimized.
Finished benchmarking commit (4d962f0): comparison URL.
Overall result: no relevant changes - no action needed
Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.
@bors rollup=never
@rustbot label: -S-waiting-on-perf -perf-regression
Instruction count
This benchmark run did not return any relevant results for this metric.
Max RSS (memory usage)
Results
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.
| mean | range | count | |
|---|---|---|---|
| Regressions ❌ (primary) | - | - | 0 |
| Regressions ❌ (secondary) | - | - | 0 |
| Improvements ✅ (primary) | - | - | 0 |
| Improvements ✅ (secondary) | -4.6% | [-4.7%, -4.4%] | 2 |
| All ❌✅ (primary) | - | - | 0 |
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: 673.033s -> 673.683s (0.10%)
Artifact size: 313.38 MiB -> 313.38 MiB (-0.00%)
Yeah. I didn't think of that. Here's the output for ./x doc library/std, run on my machine:
michaelhowell@Michael-Howells-Macbook-Pro rust % du -hs doc-new doc-old 117M doc-new 116M doc-old michaelhowell@Michael-Howells-Macbook-Pro rust % du -s doc-new doc-old 240272 doc-new 237384 doc-old
Where doc-new is the version in this branch (a333572), and doc-old is from b29a1e0
So about a 1.2% increase. That's not that bad I guess, but it's also not trivially small.
@rfcbot fcp close
I have to say it's not worth it. There's reasonable arguments for both perspectives, and I don't want to be flip-flopping back and forth.
Team member @notriddle has proposed to close this. The next step is review by the rest of the tagged team members:
No concerns currently listed.
Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!
See this document for info about what commands tagged team members can give me.
I think it's worth landing this. As their tend to be many methods on items in std, users probably haven't seen the stability version of the containing item.
Also it feels weird and inconsistant that functions stabilized at the same time as the item have don't have a stability marker, but the rest do.
I think we should merge this.
I lean on the side of "close without action."
It's true that it's a bit weird and confusing to not have stability information in every possible place. And when I first noticed that I thought it was a bug.
But stability versions take up a notable amount of room in the UI, and if they are on every item in the standard docs, it will be harder to notice which ones are noteworthy. For instance, I think this PR would annotate every single method of String with 1.0.0, right? That's not very noteworthy.
And if someone does make a mistake and uses a method that is not stabilized on the older version of Rust they're using, because they didn't notice that the struct itself wasn't stabilized by that version, they will get a nice error that makes it pretty clear what the problem is.
For instance, I think this PR would annotate every single method of
Stringwith1.0.0, right?
I wonder if that gives another alternative -- rather than "omitted is same as the type", it could be "omitted is 1.0", which might bring that size overhead back down a bunch again, if it was largely from old basics?
Still dunno if it's worth doing, though.
I also feel like I weakly fall on the side of landing this (maybe with the change to hide 1.0.0 annotations to reduce the size impact). I have been personally confused at the lack of annotations many times and feel like the consistency gain is worth it.
I was just quite confused by the missing stability annotation on a const fn: #121989
We (briefly) talked about it in the last rustdoc meeting. Some members of the team would actually like this feature to be merged, so more discussions will follow.
As discussed on zulip, seems like the majority of the rustdoc team would prefer to have this feature.
The original reason (in 2016, so very shortly after the 1.0) for not displaying the version in case it was the same as the parent's was because it was too much noise. At the time, it was much more common for the majority of sub-items to be from 1.0. Now there's a much wider spread of version numbers so the items which don't have a version number on them are probably the minority.
But also, since then, the number of items grew quite a lot and it's not rare to land on a page to a given item and then you need to scroll to the top to see the version of the parent item to see from which version it can be used if it was not marked.
For these reasons, I'll cancel the closing FCP and open a merge FCP instead.
@rfcbot cancel
@rfcbot merge
Team member @GuillaumeGomez has proposed to merge this. The next step is review by the rest of the tagged team members:
No concerns currently listed.
Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!
See this document for info about what commands tagged team members can give me.
rfcbot seems to be glitching...
@rfcbot reviewed
🔔 This is now entering its final comment period, as per the review above. 🔔
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.
📌 Commit a333572 has been approved by rustdoc
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
Finished benchmarking commit (d1a0fa5): comparison URL.
Overall result: ❌✅ regressions and improvements - ACTION NEEDED
Next Steps: If you can justify the regressions found in this perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please open an issue or create a new PR that fixes the regressions, add a comment linking to the newly created issue or PR, and then add the perf-regression-triaged label to this PR.
@rustbot label: +perf-regression
cc @rust-lang/wg-compiler-performance
Instruction count
This is a highly reliable metric that was used to determine the overall result at the top of this comment.
| mean | range | count | |
|---|---|---|---|
| Regressions ❌ (primary) | 0.3% | [0.2%, 0.3%] | 2 |
| Regressions ❌ (secondary) | - | - | 0 |
| Improvements ✅ (primary) | -0.2% | [-0.2%, -0.2%] | 1 |
| Improvements ✅ (secondary) | - | - | 0 |
| All ❌✅ (primary) | 0.1% | [-0.2%, 0.3%] | 3 |
Max RSS (memory usage)
Results
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.
| mean | range | count | |
|---|---|---|---|
| Regressions ❌ (primary) | 2.5% | [2.5%, 2.5%] | 1 |
| Regressions ❌ (secondary) | - | - | 0 |
| Improvements ✅ (primary) | - | - | 0 |
| Improvements ✅ (secondary) | - | - | 0 |
| All ❌✅ (primary) | 2.5% | [2.5%, 2.5%] | 1 |
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: 672.208s -> 672.762s (0.08%)
Artifact size: 315.30 MiB -> 315.24 MiB (-0.02%)
This is rustdoc change that shouldn't cause the regex-opt regressions; let's see how this noise does in the future but in the meantime, @rustbot label: +perf-regression-triaged
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request
This is based on the pkgsrc-wip rust180 package, retaining the main pkgsrc changes as best as I could.
Pkgsrc changes:
- Adapt checksums and patches.
- Make this work again on big-endian aarch64 (at least on NetBSD).
- Make the choice of GCC = 12 work for sparc64 by testing options after options.mk is included (which is required...). Makes this work on NetBSD/sparc64 10.0 again.
Upstream chnages:
Version 1.80.1 (2024-08-08)
- [Fix miscompilation in the jump threading MIR optimization when comparing floats] (rust-lang/rust#128271)
- [Revert changes to the
dead_codelint from 1.80.0] (rust-lang/rust#128618)
Version 1.80.0 (2024-07-25)
Language
- [Document maximum allocation size] (rust-lang/rust#116675)
- [Allow zero-byte offsets and ZST read/writes on arbitrary pointers] (rust-lang/rust#117329)
- [Support C23's variadics without a named parameter] (rust-lang/rust#124048)
- [Stabilize
exclusive_range_patternfeature] (rust-lang/rust#124459) - [Guarantee layout and ABI of
Resultin some scenarios] (rust-lang/rust#124870)
Compiler
- [Update cc crate to v1.0.97 allowing additional spectre mitigations on MSVC targets] (rust-lang/rust#124892)
- [Allow field reordering on types marked
repr(packed(1))] (rust-lang/rust#125360) - [Add a lint against never type fallback affecting unsafe code] (rust-lang/rust#123939)
- [Disallow cast with trailing braced macro in let-else] (rust-lang/rust#125049)
- [Expand
for_loops_over_fallibleslint to lint on fallibles behind references.] (rust-lang/rust#125156) - [self-contained linker: retry linking without
-fuse-ld=lldon CCs that don't support it] (rust-lang/rust#125417) - [Do not parse CVarArgs (
...) as a type in trait bounds] (rust-lang/rust#125863) - Improvements to LLDB formatting [#124458] (rust-lang/rust#124458) [#124500] (rust-lang/rust#124500)
- [For the wasm32-wasip2 target default to PIC and do not use
-fuse-ld=lld] (rust-lang/rust#124858) - [Add x86_64-unknown-linux-none as a tier 3 target] (rust-lang/rust#125023)
- [Lint on
foo.into_iter()resolving to&Box<[T]>: IntoIterator] (rust-lang/rust#124097)
Libraries
- [Add
size_ofandsize_of_valandalign_ofandalign_of_valto the prelude] (rust-lang/rust#123168) - [Abort a process when FD ownership is violated] (rust-lang/rust#124210)
- [io::Write::write_fmt: panic if the formatter fails when the stream does not fail] (rust-lang/rust#125012)
- [Panic if
PathBuf::set_extensionwould add a path separator] (rust-lang/rust#125070) - [Add assert_unsafe_precondition to unchecked_{add,sub,neg,mul,shl,shr} methods] (rust-lang/rust#121571)
- [Update
c_charon AIX to use the correct type] (rust-lang/rust#122986) - [
offset_of!no longer returns a temporary] (rust-lang/rust#124484) - [Handle sigma in
str.to_lowercasecorrectly] (rust-lang/rust#124773) - [Raise
DEFAULT_MIN_STACK_SIZEto at least 64KiB] (rust-lang/rust#126059)
Stabilized APIs
- [
impl Default for Rc<CStr>] (https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3CCStr%3E) - [
impl Default for Rc<str>] (https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3Cstr%3E) - [
impl Default for Rc<[T]>] (https://doc.rust-lang.org/beta/alloc/rc/struct.Rc.html#impl-Default-for-Rc%3C%5BT%5D%3E) - [
impl Default for Arc<str>] (https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3Cstr%3E) - [
impl Default for Arc<CStr>] (https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3CCStr%3E) - [
impl Default for Arc<[T]>] (https://doc.rust-lang.org/beta/alloc/sync/struct.Arc.html#impl-Default-for-Arc%3C%5BT%5D%3E) - [
impl IntoIterator for Box<[T]>] (https://doc.rust-lang.org/beta/alloc/boxed/struct.Box.html#impl-IntoIterator-for-Box%3C%5BI%5D,+A%3E) - [
impl FromIterator<String> for Box<str>] (https://doc.rust-lang.org/beta/alloc/boxed/struct.Box.html#impl-FromIterator%3CString%3E-for-Box%3Cstr%3E) - [
impl FromIterator<char> for Box<str>] (https://doc.rust-lang.org/beta/alloc/boxed/struct.Box.html#impl-FromIterator%3Cchar%3E-for-Box%3Cstr%3E) - [
LazyCell] (https://doc.rust-lang.org/beta/core/cell/struct.LazyCell.html) - [
LazyLock] (https://doc.rust-lang.org/beta/std/sync/struct.LazyLock.html) - [
Duration::div_duration_f32] (https://doc.rust-lang.org/beta/std/time/struct.Duration.html#method.div_duration_f32) - [
Duration::div_duration_f64] (https://doc.rust-lang.org/beta/std/time/struct.Duration.html#method.div_duration_f64) - [
Option::take_if] (https://doc.rust-lang.org/beta/std/option/enum.Option.html#method.take_if) - [
Seek::seek_relative] (https://doc.rust-lang.org/beta/std/io/trait.Seek.html#method.seek_relative) - [
BinaryHeap::as_slice] (https://doc.rust-lang.org/beta/std/collections/struct.BinaryHeap.html#method.as_slice) - [
NonNull::offset] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.offset) - [
NonNull::byte_offset] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_offset) - [
NonNull::add] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.add) - [
NonNull::byte_add] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_add) - [
NonNull::sub] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.sub) - [
NonNull::byte_sub] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_sub) - [
NonNull::offset_from] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.offset_from) - [
NonNull::byte_offset_from] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.byte_offset_from) - [
NonNull::read] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read) - [
NonNull::read_volatile] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read_volatile) - [
NonNull::read_unaligned] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.read_unaligned) - [
NonNull::write] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write) - [
NonNull::write_volatile] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_volatile) - [
NonNull::write_unaligned] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_unaligned) - [
NonNull::write_bytes] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.write_bytes) - [
NonNull::copy_to] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_to) - [
NonNull::copy_to_nonoverlapping] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_to_nonoverlapping) - [
NonNull::copy_from] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_from) - [
NonNull::copy_from_nonoverlapping] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.copy_from_nonoverlapping) - [
NonNull::replace] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.replace) - [
NonNull::swap] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.swap) - [
NonNull::drop_in_place] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.drop_in_place) - [
NonNull::align_offset] (https://doc.rust-lang.org/beta/std/ptr/struct.NonNull.html#method.align_offset) - [
<[T]>::split_at_checked] (https://doc.rust-lang.org/beta/std/primitive.slice.html#method.split_at_checked) - [
<[T]>::split_at_mut_checked] (https://doc.rust-lang.org/beta/std/primitive.slice.html#method.split_at_mut_checked) - [
str::split_at_checked] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.split_at_checked) - [
str::split_at_mut_checked] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.split_at_mut_checked) - [
str::trim_ascii] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii) - [
str::trim_ascii_start] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii_start) - [
str::trim_ascii_end] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.trim_ascii_end) - [
<[u8]>::trim_ascii] (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii) - [
<[u8]>::trim_ascii_start] (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii_start) - [
<[u8]>::trim_ascii_end] (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.trim_ascii_end) - [
Ipv4Addr::BITS] (https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#associatedconstant.BITS) - [
Ipv4Addr::to_bits] (https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#method.to_bits) - [
Ipv4Addr::from_bits] (https://doc.rust-lang.org/beta/core/net/struct.Ipv4Addr.html#method.from_bits) - [
Ipv6Addr::BITS] (https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#associatedconstant.BITS) - [
Ipv6Addr::to_bits] (https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#method.to_bits) - [
Ipv6Addr::from_bits] (https://doc.rust-lang.org/beta/core/net/struct.Ipv6Addr.html#method.from_bits) - [
Vec::<[T; N]>::into_flattened] (https://doc.rust-lang.org/beta/alloc/vec/struct.Vec.html#method.into_flattened) - [
<[[T; N]]>::as_flattened] (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.as_flattened) - [
<[[T; N]]>::as_flattened_mut] (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.as_flattened_mut)
These APIs are now stable in const contexts:
- [
<[T]>::last_chunk] (https://doc.rust-lang.org/beta/core/primitive.slice.html#method.last_chunk) - [
BinaryHeap::new] (https://doc.rust-lang.org/beta/std/collections/struct.BinaryHeap.html#method.new)
Cargo
- [Stabilize
-Zcheck-cfgas always enabled] (rust-lang/cargo#13571) - [Warn, rather than fail publish, if a target is excluded] (rust-lang/cargo#13713)
- [Add special
check-cfglint config for theunexpected_cfgslint] (rust-lang/cargo#13913) - [Stabilize
cargo update --precise <yanked>] (rust-lang/cargo#13974) - [Don't change file permissions on
Cargo.tomlwhen usingcargo add] (rust-lang/cargo#13898) - [Support using
cargo fixon IPv6-only networks] (rust-lang/cargo#13907)
Rustdoc
- [Allow searching for references] (rust-lang/rust#124148)
- [Stabilize
custom_code_classes_in_docsfeature] (rust-lang/rust#124577) - [fix: In cross-crate scenarios show enum variants on type aliases of enums] (rust-lang/rust#125300)
Compatibility Notes
- [rustfmt estimates line lengths differently when using non-ascii characters] (rust-lang/rustfmt#6203)
- [Type aliases are now handled correctly in orphan check] (rust-lang/rust#117164)
- [Allow instructing rustdoc to read from stdin via
-] (rust-lang/rust#124611) - [
std::env::{set_var, remove_var}can no longer be converted to safe function pointers and no longer implement theFnfamily of traits] (rust-lang/rust#124636) - [Warn (or error) when
Selfconstructor from outer item is referenced in inner nested item] (rust-lang/rust#124187) - [Turn
indirect_structural_matchandpointer_structural_matchlints into hard errors] (rust-lang/rust#124661) - [Make
where_clause_object_safetylint a regular object safety violation] (rust-lang/rust#125380) - [Turn
proc_macro_back_compatlint into a hard error.] (rust-lang/rust#125596) - [Detect unused structs even when implementing private traits] (rust-lang/rust#122382)
- [
std::sync::ReentrantLockGuard<T>is no longerSyncifT: !Sync] (rust-lang/rust#125527) which means [std::io::StdoutLockandstd::io::StderrLockare no longer Sync] (rust-lang/rust#127340)
Internal Changes
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
- Misc improvements to size of generated html by rustdoc e.g. [#124738] (rust-lang/rust#124738) and [#123734] (rust-lang/rust#123734)
- [MSVC targets no longer depend on libc] (rust-lang/rust#124050)
Version 1.79.0 (2024-06-13)
Language
- [Stabilize inline
const {}expressions.] (rust-lang/rust#104087) - [Prevent opaque types being instantiated twice with different regions within the same function.] (rust-lang/rust#116935)
- [Stabilize WebAssembly target features that are in phase 4 and 5.] (rust-lang/rust#117457)
- [Add the
redundant_lifetimeslint to detect lifetimes which are semantically redundant.] (rust-lang/rust#118391) - [Stabilize the
unnameable_typeslint for public types that can't be named.] (rust-lang/rust#120144) - [Enable debuginfo in macros, and stabilize
-C collapse-macro-debuginfoand#[collapse_debuginfo].] (rust-lang/rust#120845) - [Propagate temporary lifetime extension into
ifandmatchexpressions.] (rust-lang/rust#121346) - [Restrict promotion of
const fncalls.] (rust-lang/rust#121557) - [Warn against refining impls of crate-private traits with
refining_impl_traitlint.] (rust-lang/rust#121720) - [Stabilize associated type bounds (RFC 2289).] (rust-lang/rust#122055)
- [Stabilize importing
mainfrom other modules or crates.] (rust-lang/rust#122060) - [Check return types of function types for well-formedness] (rust-lang/rust#115538)
- [Rework
impl Traitlifetime inference] (rust-lang/rust#116891) - [Change inductive trait solver cycles to be ambiguous] (rust-lang/rust#122791)
Compiler
- [Define
-C stripto only affect binaries, not artifacts like.pdb.] (rust-lang/rust#115120) - [Stabilize
-Crelro-levelfor controlling runtime link hardening.] (rust-lang/rust#121694) - [Stabilize checking of
cfgnames and values at compile-time with--check-cfg.] (rust-lang/rust#123501) Note that this only stabilizes the compiler part, the Cargo part is still unstable in this release. - [Add
aarch64-apple-visionosandaarch64-apple-visionos-simtier 3 targets.] (rust-lang/rust#121419) - [Add
riscv32ima-unknown-none-elftier 3 target.] (rust-lang/rust#122696) - [Promote several Windows targets to tier 2]
(rust-lang/rust#121712):
aarch64-pc-windows-gnullvm,i686-pc-windows-gnullvm, andx86_64-pc-windows-gnullvm.
Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support.
Libraries
- [Implement
FromIteratorfor(impl Default + Extend, impl Default + Extend).] (rust-lang/rust#107462) - [Implement
{Div,Rem}Assign<NonZero<X>>onX.] (rust-lang/rust#121952) - [Document overrides of
clone_from()in core/std.] (rust-lang/rust#122201) - [Link MSVC default lib in core.] (rust-lang/rust#122268)
- [Caution against using
transmutebetween pointers and integers.] (rust-lang/rust#122379) - [Enable frame pointers for the standard library.] (rust-lang/rust#122646)
Stabilized APIs
- [
{integer}::unchecked_add] (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_add) - [
{integer}::unchecked_mul] (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_mul) - [
{integer}::unchecked_sub] (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_sub) - [
<[T]>::split_at_unchecked] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_unchecked) - [
<[T]>::split_at_mut_unchecked] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked) - [
<[u8]>::utf8_chunks] (https://doc.rust-lang.org/stable/core/primitive.slice.html#method.utf8_chunks) - [
str::Utf8Chunks] (https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunks.html) - [
str::Utf8Chunk] (https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunk.html) - [
<*const T>::is_aligned] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned) - [
<*mut T>::is_aligned] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned-1) - [
NonNull::is_aligned] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_aligned) - [
<*const [T]>::len] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len) - [
<*mut [T]>::len] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len-1) - [
<*const [T]>::is_empty] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty) - [
<*mut [T]>::is_empty] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty-1) - [
NonNull::<[T]>::is_empty] (https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_empty) - [
CStr::count_bytes] (https://doc.rust-lang.org/stable/core/ffi/c_str/struct.CStr.html#method.count_bytes) - [
io::Error::downcast] (https://doc.rust-lang.org/stable/std/io/struct.Error.html#method.downcast) - [
num::NonZero<T>] (https://doc.rust-lang.org/stable/core/num/struct.NonZero.html) - [
path::absolute] (https://doc.rust-lang.org/stable/std/path/fn.absolute.html) - [
proc_macro::Literal::byte_character] (https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.byte_character) - [
proc_macro::Literal::c_string] (https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.c_string)
These APIs are now stable in const contexts:
- [
Atomic*::into_inner] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.into_inner) - [
io::Cursor::new] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.new) - [
io::Cursor::get_ref] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_ref) - [
io::Cursor::position] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.position) - [
io::empty] (https://doc.rust-lang.org/stable/std/io/fn.empty.html) - [
io::repeat] (https://doc.rust-lang.org/stable/std/io/fn.repeat.html) - [
io::sink] (https://doc.rust-lang.org/stable/std/io/fn.sink.html) - [
panic::Location::caller] (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.caller) - [
panic::Location::file] (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.file) - [
panic::Location::line] (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.line) - [
panic::Location::column] (https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.column)
Cargo
- [Prevent dashes in
lib.name, always normalizing to_.] (rust-lang/cargo#12783) - [Stabilize MSRV-aware version requirement selection in
cargo add.] (rust-lang/cargo#13608) - [Switch to using
gitoxideby default for listing files.] (rust-lang/cargo#13696)
Rustdoc
- [Always display stability version even if it's the same as the containing item.] (rust-lang/rust#118441)
- [Show a single search result for items with multiple paths.] (rust-lang/rust#119912)
- [Support typing
/in docs to begin a search.] (rust-lang/rust#123355)
Misc
Compatibility Notes
- [Update the minimum external LLVM to 17.] (rust-lang/rust#122649)
- [
RustcEncodableandRustcDecodableare soft-destabilized, to be removed from the prelude in next edition.] (rust-lang/rust#116016) - [The
wasm_c_abifuture-incompatibility lint will warn about use of the non-spec-compliant C ABI.] (rust-lang/rust#117918) Usewasm-bindgen v0.2.88to generate forward-compatible bindings. - [Check return types of function types for well-formedness] (rust-lang/rust#115538)
Version 1.78.0 (2024-05-02)
Language
- [Stabilize
#[cfg(target_abi = ...)]] (rust-lang/rust#119590) - [Stabilize the
#[diagnostic]namespace and#[diagnostic::on_unimplemented]attribute] (rust-lang/rust#119888) - [Make async-fn-in-trait implementable with concrete signatures] (rust-lang/rust#120103)
- [Make matching on NaN a hard error, and remove the rest of
illegal_floating_point_literal_pattern] (rust-lang/rust#116284) - [static mut: allow mutable reference to arbitrary types, not just slices and arrays] (rust-lang/rust#117614)
- [Extend
invalid_reference_castingto include references casting to bigger memory layout] (rust-lang/rust#118983) - [Add
non_contiguous_range_endpointslint for singleton gaps after exclusive ranges] (rust-lang/rust#118879) - [Add
wasm_c_abilint for use of older wasm-bindgen versions] (rust-lang/rust#117918) This lint currently only works when using Cargo. - [Update
indirect_structural_matchandpointer_structural_matchlints to match RFC] (rust-lang/rust#120423) - [Make non-
PartialEq-typed consts as patterns a hard error] (rust-lang/rust#120805) - [Split
refining_impl_traitlint into_reachable,_internalvariants] (rust-lang/rust#121720) - [Remove unnecessary type inference when using associated types
inside of higher ranked
where-bounds] (rust-lang/rust#119849) - [Weaken eager detection of cyclic types during type inference] (rust-lang/rust#119989)
- [
trait Trait: Auto {}: allow upcasting fromdyn Traittodyn Auto] (rust-lang/rust#119338)
Compiler
- [Made
INVALID_DOC_ATTRIBUTESlint deny by default] (rust-lang/rust#111505) - [Increase accuracy of redundant
usechecking] (rust-lang/rust#117772) - [Suggest moving definition if non-found macro_rules! is defined later] (rust-lang/rust#121130)
- [Lower transmutes from int to pointer type as gep on null] (rust-lang/rust#121282)
Target changes:
- [Windows tier 1 targets now require at least Windows 10] (rust-lang/rust#115141)
- [Enable CMPXCHG16B, SSE3, SAHF/LAHF and 128-bit Atomics in tier 1 Windows] (rust-lang/rust#120820)
- [Add
wasm32-wasip1tier 2 (without host tools) target] (rust-lang/rust#120468) - [Add
wasm32-wasip2tier 3 target] (rust-lang/rust#119616) - [Rename
wasm32-wasi-preview1-threadstowasm32-wasip1-threads] (rust-lang/rust#122170) - [Add
arm64ec-pc-windows-msvctier 3 target] (rust-lang/rust#119199) - [Add
armv8r-none-eabihftier 3 target for the Cortex-R52] (rust-lang/rust#110482) - [Add
loongarch64-unknown-linux-musltier 3 target] (rust-lang/rust#121832)
Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support.
Libraries
- [Bump Unicode to version 15.1.0, regenerate tables] (rust-lang/rust#120777)
- [Make align_offset, align_to well-behaved in all cases] (rust-lang/rust#121201)
- [PartialEq, PartialOrd: document expectations for transitive chains] (rust-lang/rust#115386)
- [Optimize away poison guards when std is built with panic=abort] (rust-lang/rust#100603)
- [Replace pthread
RwLockwith custom implementation] (rust-lang/rust#110211) - [Implement unwind safety for Condvar on all platforms] (rust-lang/rust#121768)
- [Add ASCII fast-path for
char::is_grapheme_extended] (rust-lang/rust#121138)
Stabilized APIs
- [
impl Read for &Stdin] (https://doc.rust-lang.org/stable/std/io/struct.Stdin.html#impl-Read-for-%26Stdin) - [Accept non
'staticlifetimes for severalstd::error::Errorrelated implementations] (rust-lang/rust#113833) - [Make
impl<Fd: AsFd>impl take?Sized] (rust-lang/rust#114655) - [
impl From<TryReserveError> for io::Error] (https://doc.rust-lang.org/stable/std/io/struct.Error.html#impl-From%3CTryReserveError%3E-for-Error)
These APIs are now stable in const contexts:
- [
Barrier::new()] (https://doc.rust-lang.org/stable/std/sync/struct.Barrier.html#method.new)
Cargo
- Stabilize lockfile v4
- [Respect
rust-versionwhen generating lockfile] (rust-lang/cargo#12861) - [Control
--charsetvia auto-detecting config value] (rust-lang/cargo#13337) - [Support
target.<triple>.rustdocflagsofficially] (rust-lang/cargo#13197) - [Stabilize global cache data tracking] (rust-lang/cargo#13492)
Misc
- [rustdoc: add
--test-builder-wrapperarg to support wrappers such as RUSTC_WRAPPER when building doctests] (rust-lang/rust#114651)
Compatibility Notes
- [Many unsafe precondition checks now run for user code with debug assertions enabled] (rust-lang/rust#120594) This change helps users catch undefined behavior in their code, though the details of how much is checked are generally not stable.
- [riscv only supports split_debuginfo=off for now] (rust-lang/rust#120518)
- [Consistently check bounds on hidden types of
impl Trait] (rust-lang/rust#121679) - [Change equality of higher ranked types to not rely on subtyping] (rust-lang/rust#118247)
- [When called, additionally check bounds on normalized function return type] (rust-lang/rust#118882)
- [Expand coverage for
arithmetic_overflowlint] (rust-lang/rust#119432)
Internal Changes
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
- Update to LLVM 18
- [Build
rustcwith 1CGU onx86_64-pc-windows-msvc] (rust-lang/rust#112267) - [Build
rustcwith 1CGU onx86_64-apple-darwin] (rust-lang/rust#112268) - [Introduce
run-makeV2 infrastructure, arun_make_supportlibrary and port over 2 tests as example] (rust-lang/rust#113026) - [Windows: Implement condvar, mutex and rwlock using futex] (rust-lang/rust#121956)
Version 1.77.0 (2024-03-21)
- [Reveal opaque types within the defining body for exhaustiveness checking.] (rust-lang/rust#116821)
- [Stabilize C-string literals.] (rust-lang/rust#117472)
- [Stabilize THIR unsafeck.] (rust-lang/rust#117673)
- [Add lint
static_mut_refsto warn on references to mutable statics.] (rust-lang/rust#117556) - [Support async recursive calls (as long as they have indirection).] (rust-lang/rust#117703)
- [Undeprecate lint
unstable_featuresand make use of it in the compiler.] (rust-lang/rust#118639) - [Make inductive cycles in coherence ambiguous always.] (rust-lang/rust#118649)
- [Get rid of type-driven traversal in const-eval interning] (rust-lang/rust#119044), only as a [future compatiblity lint] (rust-lang/rust#122204) for now.
- [Deny braced macro invocations in let-else.] (rust-lang/rust#119062)
Compiler
- [Include lint
soft_unstablein future breakage reports.] (rust-lang/rust#116274) - [Make
i128andu12816-byte aligned on x86-based targets.] (rust-lang/rust#116672) - [Use
--verbosein diagnostic output.] (rust-lang/rust#119129) - [Improve spacing between printed tokens.] (rust-lang/rust#120227)
- [Merge the
unused_tuple_struct_fieldslint intodead_code.] (rust-lang/rust#118297) - [Error on incorrect implied bounds in well-formedness check] (rust-lang/rust#118553), with a temporary exception for Bevy.
- [Fix coverage instrumentation/reports for non-ASCII source code.] (rust-lang/rust#119033)
- [Fix
fn/constitems implied bounds and well-formedness check.] (rust-lang/rust#120019) - [Promote
riscv32{im|imafc}-unknown-none-elftargets to tier 2.] (rust-lang/rust#118704) - Add several new tier 3 targets:
- [
aarch64-unknown-illumos] (rust-lang/rust#112936) - [
hexagon-unknown-none-elf] (rust-lang/rust#117601) - [
riscv32imafc-esp-espidf] (rust-lang/rust#119738) - [
riscv32im-risc0-zkvm-elf] (rust-lang/rust#117958)
- [
Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support.
Libraries
- [Implement
From<&[T; N]>forCow<[T]>.] (rust-lang/rust#113489) - Remove special-case handling of
vec.split_off (0).
Stabilized APIs
- [
array::each_ref] (https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_ref) - [
array::each_mut] (https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_mut) - [
core::net] (https://doc.rust-lang.org/stable/core/net/index.html) - [
f32::round_ties_even] (https://doc.rust-lang.org/stable/std/primitive.f32.html#method.round_ties_even) - [
f64::round_ties_even] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.round_ties_even) - [
mem::offset_of!] (https://doc.rust-lang.org/stable/std/mem/macro.offset_of.html) - [
slice::first_chunk] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.first_chunk) - [
slice::first_chunk_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.first_chunk_mut) - [
slice::split_first_chunk] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_first_chunk) - [
slice::split_first_chunk_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_first_chunk_mut) - [
slice::last_chunk] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.last_chunk) - [
slice::last_chunk_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.last_chunk_mut) - [
slice::split_last_chunk] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_last_chunk) - [
slice::split_last_chunk_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_last_chunk_mut) - [
slice::chunk_by] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.chunk_by) - [
slice::chunk_by_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.chunk_by_mut) - [
Bound::map] (https://doc.rust-lang.org/stable/std/ops/enum.Bound.html#method.map) - [
File::create_new] (https://doc.rust-lang.org/stable/std/fs/struct.File.html#method.create_new) - [
Mutex::clear_poison] (https://doc.rust-lang.org/stable/std/sync/struct.Mutex.html#method.clear_poison) - [
RwLock::clear_poison] (https://doc.rust-lang.org/stable/std/sync/struct.RwLock.html#method.clear_poison)
Cargo
- [Extend the build directive syntax with
cargo::.] (rust-lang/cargo#12201) - [Stabilize metadata
idformat asPackageIDSpec.] (rust-lang/cargo#12914) - [Pull out as
cargo-util-schemasas a crate.] (rust-lang/cargo#13178) - [Strip all debuginfo when debuginfo is not requested.] (rust-lang/cargo#13257)
- [Inherit jobserver from env for all kinds of runners.] (rust-lang/cargo#12776)
- [Deprecate rustc plugin support in cargo.] (rust-lang/cargo#13248)
Rustdoc
- [Allows links in markdown headings.] (rust-lang/rust#117662)
- [Search for tuples and unit by type with
().] (rust-lang/rust#118194) - [Clean up the source sidebar's hide button.] (rust-lang/rust#119066)
- [Prevent JS injection from
localStorage.] (rust-lang/rust#120250)
Misc
- [Recommend version-sorting for all sorting in style guide.] (rust-lang/rust#115046)
Internal Changes
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
- [Add more weirdness to
weird-exprs.rs.] (rust-lang/rust#119028)
