X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=RELEASES.md;h=4b753a2b32fff9bf3c29e0c5510678323dca411c;hb=03b845a41f1666654ecffcbaa6a582170ec0ed8d;hp=60b3359c1b68ab519664e78c38cfc539a2336192;hpb=3a8bb38164d9681bb20d60e9fb225efe10d3c6fa;p=rust.git diff --git a/RELEASES.md b/RELEASES.md index 60b3359c1b6..4b753a2b32f 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -1,3 +1,196 @@ +Version 1.53.0 (2021-06-17) +============================ + +Language +----------------------- +- [You can now use unicode for identifiers.][83799] This allows multilingual + identifiers but still doesn't allow glyphs that are not considered characters + such as `◆` or `🦀`. More specifically you can now use any identifier that + matches the UAX #31 "Unicode Identifier and Pattern Syntax" standard. This + is the same standard as languages like Python, however Rust uses NFC + normalization which may be different from other languages. +- [You can now specify "or patterns" inside pattern matches.][79278] + Previously you could only use `|` (OR) on complete patterns. E.g. + ```rust + let x = Some(2u8); + // Before + matches!(x, Some(1) | Some(2)); + // Now + matches!(x, Some(1 | 2)); + ``` +- [Added the `:pat_param` `macro_rules!` matcher.][83386] This matcher + has the same semantics as the `:pat` matcher. This is to allow `:pat` + to change semantics to being a pattern fragment in a future edition. + +Compiler +----------------------- +- [Updated the minimum external LLVM version to LLVM 10.][83387] +- [Added Tier 3\* support for the `wasm64-unknown-unknown` target.][80525] +- [Improved debuginfo for closures and async functions on Windows MSVC.][83941] + +\* Refer to Rust's [platform support page][platform-support-doc] for more +information on Rust's tiered platform support. + +Libraries +----------------------- +- [Abort messages will now forward to `android_set_abort_message` on + Android platforms when available.][81469] +- [`slice::IterMut<'_, T>` now implements `AsRef<[T]>`][82771] +- [Arrays of any length now implement `IntoIterator`.][84147] + Currently calling `.into_iter()` as a method on an array will + return `impl Iterator`, but this may change in a + future edition to change `Item` to `T`. Calling `IntoIterator::into_iter` + directly on arrays will provide `impl Iterator` as expected. +- [`leading_zeros`, and `trailing_zeros` are now available on all + `NonZero` integer types.][84082] +- [`{f32, f64}::from_str` now parse and print special values + (`NaN`, `-0`) according to IEEE RFC 754.][78618] +- [You can now index into slices using `(Bound, Bound)`.][77704] +- [Add the `BITS` associated constant to all numeric types.][82565] + +Stabilised APIs +--------------- +- [`AtomicBool::fetch_update`] +- [`AtomicPtr::fetch_update`] +- [`BTreeMap::retain`] +- [`BTreeSet::retain`] +- [`BufReader::seek_relative`] +- [`DebugStruct::non_exhaustive`] +- [`Duration::MAX`] +- [`Duration::ZERO`] +- [`Duration::is_zero`] +- [`Duration::saturating_add`] +- [`Duration::saturating_mul`] +- [`Duration::saturating_sub`] +- [`ErrorKind::Unsupported`] +- [`Option::insert`] +- [`Ordering::is_eq`] +- [`Ordering::is_ge`] +- [`Ordering::is_gt`] +- [`Ordering::is_le`] +- [`Ordering::is_lt`] +- [`Ordering::is_ne`] +- [`OsStr::is_ascii`] +- [`OsStr::make_ascii_lowercase`] +- [`OsStr::make_ascii_uppercase`] +- [`OsStr::to_ascii_lowercase`] +- [`OsStr::to_ascii_uppercase`] +- [`Peekable::peek_mut`] +- [`Rc::decrement_strong_count`] +- [`Rc::increment_strong_count`] +- [`Vec::extend_from_within`] +- [`array::from_mut`] +- [`array::from_ref`] +- [`cmp::max_by_key`] +- [`cmp::max_by`] +- [`cmp::min_by_key`] +- [`cmp::min_by`] +- [`f32::is_subnormal`] +- [`f64::is_subnormal`] + +Cargo +----------------------- +- [Cargo now supports git repositories where the default `HEAD` branch is not + "master".][cargo/9392] This also includes a switch to the version 3 `Cargo.lock` format + which can handle default branches correctly. +- [macOS targets now default to `unpacked` split-debuginfo.][cargo/9298] +- [The `authors` field is no longer included in `Cargo.toml` for new + projects.][cargo/9282] + +Rustdoc +----------------------- +- [Added the `rustdoc::bare_urls` lint that warns when you have URLs + without hyperlinks.][81764] + +Compatibility Notes +------------------- +- [Implement token-based handling of attributes during expansion][82608] +- [`Ipv4::from_str` will now reject octal format IP addresses in addition + to rejecting hexadecimal IP addresses.][83652] The octal format can lead + to confusion and potential security vulnerabilities and [is no + longer recommended][ietf6943]. +- [The added `BITS` constant may conflict with external definitions.][85667] + In particular, this was known to be a problem in the `lexical-core` crate, + but they have published fixes for semantic versions 0.4 through 0.7. To + update this dependency alone, use `cargo update -p lexical-core`. +- Incremental compilation remains off by default, unless one uses the `RUSTC_FORCE_INCREMENTAL=1` environment variable added in 1.52.1. + +Internal Only +------------- +These changes provide no direct user facing benefits, but represent significant +improvements to the internals and overall performance of rustc and +related tools. + +- [Rework the `std::sys::windows::alloc` implementation.][83065] +- [rustdoc: Don't enter an infer_ctxt in get_blanket_impls for impls that aren't blanket impls.][82864] +- [rustdoc: Only look at blanket impls in `get_blanket_impls`][83681] +- [Rework rustdoc const type][82873] + +[85667]: https://github.com/rust-lang/rust/pull/85667 +[83386]: https://github.com/rust-lang/rust/pull/83386 +[82771]: https://github.com/rust-lang/rust/pull/82771 +[84147]: https://github.com/rust-lang/rust/pull/84147 +[84082]: https://github.com/rust-lang/rust/pull/84082 +[83799]: https://github.com/rust-lang/rust/pull/83799 +[83681]: https://github.com/rust-lang/rust/pull/83681 +[83652]: https://github.com/rust-lang/rust/pull/83652 +[83387]: https://github.com/rust-lang/rust/pull/83387 +[82873]: https://github.com/rust-lang/rust/pull/82873 +[82864]: https://github.com/rust-lang/rust/pull/82864 +[82608]: https://github.com/rust-lang/rust/pull/82608 +[82565]: https://github.com/rust-lang/rust/pull/82565 +[80525]: https://github.com/rust-lang/rust/pull/80525 +[79278]: https://github.com/rust-lang/rust/pull/79278 +[78618]: https://github.com/rust-lang/rust/pull/78618 +[77704]: https://github.com/rust-lang/rust/pull/77704 +[83941]: https://github.com/rust-lang/rust/pull/83941 +[83065]: https://github.com/rust-lang/rust/pull/83065 +[81764]: https://github.com/rust-lang/rust/pull/81764 +[81469]: https://github.com/rust-lang/rust/pull/81469 +[cargo/9298]: https://github.com/rust-lang/cargo/pull/9298 +[cargo/9282]: https://github.com/rust-lang/cargo/pull/9282 +[cargo/9392]: https://github.com/rust-lang/cargo/pull/9392 +[`AtomicBool::fetch_update`]: https://doc.rust-lang.org/std/sync/atomic/struct.AtomicBool.html#method.fetch_update +[`AtomicPtr::fetch_update`]: https://doc.rust-lang.org/std/sync/atomic/struct.AtomicPtr.html#method.fetch_update +[`BTreeMap::retain`]: https://doc.rust-lang.org/std/collections/struct.BTreeMap.html#method.retain +[`BTreeSet::retain`]: https://doc.rust-lang.org/std/collections/struct.BTreeSet.html#method.retain +[`BufReader::seek_relative`]: https://doc.rust-lang.org/std/io/struct.BufReader.html#method.seek_relative +[`DebugStruct::non_exhaustive`]: https://doc.rust-lang.org/std/fmt/struct.DebugStruct.html#method.finish_non_exhaustive +[`Duration::MAX`]: https://doc.rust-lang.org/std/time/struct.Duration.html#associatedconstant.MAX +[`Duration::ZERO`]: https://doc.rust-lang.org/std/time/struct.Duration.html#associatedconstant.ZERO +[`Duration::is_zero`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.is_zero +[`Duration::saturating_add`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.saturating_add +[`Duration::saturating_mul`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.saturating_mul +[`Duration::saturating_sub`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.saturating_sub +[`ErrorKind::Unsupported`]: https://doc.rust-lang.org/std/io/enum.ErrorKind.html#variant.Unsupported +[`Option::insert`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.insert +[`Ordering::is_eq`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.is_eq +[`Ordering::is_ge`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.is_ge +[`Ordering::is_gt`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.is_gt +[`Ordering::is_le`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.is_le +[`Ordering::is_lt`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.is_lt +[`Ordering::is_ne`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.is_ne +[`OsStr::eq_ignore_ascii_case`]: https://doc.rust-lang.org/std/ffi/struct.OsStr.html#method.eq_ignore_ascii_case +[`OsStr::is_ascii`]: https://doc.rust-lang.org/std/ffi/struct.OsStr.html#method.is_ascii +[`OsStr::make_ascii_lowercase`]: https://doc.rust-lang.org/std/ffi/struct.OsStr.html#method.make_ascii_lowercase +[`OsStr::make_ascii_uppercase`]: https://doc.rust-lang.org/std/ffi/struct.OsStr.html#method.make_ascii_uppercase +[`OsStr::to_ascii_lowercase`]: https://doc.rust-lang.org/std/ffi/struct.OsStr.html#method.to_ascii_lowercase +[`OsStr::to_ascii_uppercase`]: https://doc.rust-lang.org/std/ffi/struct.OsStr.html#method.to_ascii_uppercase +[`Peekable::peek_mut`]: https://doc.rust-lang.org/std/iter/struct.Peekable.html#method.peek_mut +[`Rc::decrement_strong_count`]: https://doc.rust-lang.org/std/rc/struct.Rc.html#method.increment_strong_count +[`Rc::increment_strong_count`]: https://doc.rust-lang.org/std/rc/struct.Rc.html#method.increment_strong_count +[`Vec::extend_from_within`]: https://doc.rust-lang.org/beta/std/vec/struct.Vec.html#method.extend_from_within +[`array::from_mut`]: https://doc.rust-lang.org/beta/std/array/fn.from_mut.html +[`array::from_ref`]: https://doc.rust-lang.org/beta/std/array/fn.from_ref.html +[`cmp::max_by_key`]: https://doc.rust-lang.org/beta/std/cmp/fn.max_by_key.html +[`cmp::max_by`]: https://doc.rust-lang.org/beta/std/cmp/fn.max_by.html +[`cmp::min_by_key`]: https://doc.rust-lang.org/beta/std/cmp/fn.min_by_key.html +[`cmp::min_by`]: https://doc.rust-lang.org/beta/std/cmp/fn.min_by.html +[`f32::is_subnormal`]: https://doc.rust-lang.org/std/primitive.f64.html#method.is_subnormal +[`f64::is_subnormal`]: https://doc.rust-lang.org/std/primitive.f64.html#method.is_subnormal +[ietf6943]: https://datatracker.ietf.org/doc/html/rfc6943#section-3.1.1 + + Version 1.52.1 (2021-05-10) ============================ @@ -118,6 +311,7 @@ Compatibility Notes - [Rustc now catches more cases of `pub_use_of_private_extern_crate`][80763] - [Changes in how proc macros handle whitespace may lead to panics when used with older `proc-macro-hack` versions. A `cargo update` should be sufficient to fix this in all cases.][84136] +- [Turn `#[derive]` into a regular macro attribute][79078] [84136]: https://github.com/rust-lang/rust/issues/84136 [80763]: https://github.com/rust-lang/rust/pull/80763 @@ -144,6 +338,7 @@ Compatibility Notes [78429]: https://github.com/rust-lang/rust/pull/78429 [82733]: https://github.com/rust-lang/rust/pull/82733 [82594]: https://github.com/rust-lang/rust/pull/82594 +[79078]: https://github.com/rust-lang/rust/pull/79078 [cargo/9181]: https://github.com/rust-lang/cargo/pull/9181 [`char::MAX`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.MAX [`char::REPLACEMENT_CHARACTER`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.REPLACEMENT_CHARACTER