X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=RELEASES.md;h=f36cdee0975a0394a0e866418fb3c894be2bcc01;hb=4c48ac3e88e438f6b478adca61629a611db6b3dc;hp=006682f50593662b5cef199b4ec7f4beece47062;hpb=fb976e65a0a2e4368fe0f6e80f9efdc18fb125e4;p=rust.git diff --git a/RELEASES.md b/RELEASES.md index 006682f5059..f36cdee0975 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -1,3 +1,176 @@ +Version 1.45.0 (2020-07-16) +========================== + +Language +-------- +- [Out of range float to int conversions using `as` has been defined as a saturating + conversion.][71269] This was previously undefined behaviour, but you can use the + `{f64, f32}::to_int_unchecked` methods to continue using the current behaviour, which + may be desirable in rare performance sensitive situations. +- [`mem::Discriminant` now uses `T`'s discriminant type instead of always + using `u64`.][70705] +- [Function like procedural macros can now be used in expression, pattern, and statement + positions.][68717] This means you can now use a function-like procedural macro + anywhere you can use a declarative (`macro_rules!`) macro. + +Compiler +-------- +- [You can now override individual target features through the `target-feature` + flag.][72094] E.g. `-C target-feature=+avx2 -C target-feature=+fma` is now + equivalent to `-C target-feature=+avx2,+fma`. +- [Added the `force-unwind-tables` flag.][69984] This option allows + rustc to always generate unwind tables regardless of panic strategy. +- [Added the `embed-bitcode` flag.][71716] This codegen flag allows rustc + to include LLVM bitcode into generated `rlib`s (this is on by default). +- [Added the `tiny` value to the `code-model` codegen flag.][72397] +- [Added tier 3 support\* for the `mipsel-sony-psp` target.][72062] +- [Added tier 3 support for the `thumbv7a-uwp-windows-msvc` target.][72133] + +\* Refer to Rust's [platform support page][forge-platform-support] for more +information on Rust's tiered platform support. + + +Libraries +--------- +- [`net::{SocketAddr, SocketAddrV4, SocketAddrV6}` now implements `PartialOrd` + and `Ord`.][72239] +- [`proc_macro::TokenStream` now implements `Default`.][72234] +- [You can now use `char` with + `ops::{Range, RangeFrom, RangeFull, RangeInclusive, RangeTo}` to iterate over + a range of codepoints.][72413] E.g. + you can now write the following; + ```rust + for ch in 'a'..='z' { + print!("{}", ch); + } + println!(); + // Prints "abcdefghijklmnopqrstuvwxyz" + ``` +- [`OsString` now implements `FromStr`.][71662] +- [The `saturating_neg` method has been added to all signed integer primitive + types, and the `saturating_abs` method has been added for all integer + primitive types.][71886] +- [`Arc`, `Rc` now implement `From>`, and `Box` now + implements `From` when `T` is `[T: Copy]`, `str`, `CStr`, `OsStr`, + or `Path`.][71447] +- [`Box<[T]>` now implements `From<[T; N]>`.][71095] +- [`BitOr` and `BitOrAssign` are implemented for all `NonZero` + integer types.][69813] +- [The `fetch_min`, and `fetch_max` methods have been added to all atomic + integer types.][72324] +- [The `fetch_update` method has been added to all atomic integer types.][71843] + +Stabilized APIs +--------------- +- [`Arc::as_ptr`] +- [`BTreeMap::remove_entry`] +- [`Rc::as_ptr`] +- [`rc::Weak::as_ptr`] +- [`rc::Weak::from_raw`] +- [`rc::Weak::into_raw`] +- [`str::strip_prefix`] +- [`str::strip_suffix`] +- [`sync::Weak::as_ptr`] +- [`sync::Weak::from_raw`] +- [`sync::Weak::into_raw`] +- [`char::UNICODE_VERSION`] +- [`Span::resolved_at`] +- [`Span::located_at`] +- [`Span::mixed_site`] +- [`unix::process::CommandExt::arg0`] + +Cargo +----- + +- [Cargo uses the `embed-bitcode` flag to optimize disk usage and build + time.][cargo/8066] + +Misc +---- +- [Rustdoc now supports strikethrough text in Markdown.][71928] E.g. + `~~outdated information~~` becomes "~~outdated information~~". +- [Added an emoji to Rustdoc's deprecated API message.][72014] + +Compatibility Notes +------------------- +- [Trying to self initialize a static value (that is creating a value using + itself) is unsound and now causes a compile error.][71140] +- [`{f32, f64}::powi` now returns a slightly different value on Windows.][73420] + This is due to changes in LLVM's intrinsics which `{f32, f64}::powi` uses. +- [Rustdoc's CLI's extra error exit codes have been removed.][71900] These were + previously undocumented and not intended for public use. Rustdoc still provides + a non-zero exit code on errors. +- [Rustc's `lto` flag is incompatible with the new `embed-bitcode=no`.][71848] + This may cause issues if LTO is enabled through `RUSTFLAGS` or `cargo rustc` + flags while cargo is adding `embed-bitcode` itself. The recommended way to + control LTO is with Cargo profiles, either in `Cargo.toml` or `.cargo/config`, + or by setting `CARGO_PROFILE__LTO` in the environment. + +Internals Only +-------------- +- [Make clippy a git subtree instead of a git submodule][70655] +- [Unify the undo log of all snapshot types][69464] + +[71848]: https://github.com/rust-lang/rust/issues/71848/ +[73420]: https://github.com/rust-lang/rust/issues/73420/ +[72324]: https://github.com/rust-lang/rust/pull/72324/ +[71843]: https://github.com/rust-lang/rust/pull/71843/ +[71886]: https://github.com/rust-lang/rust/pull/71886/ +[72234]: https://github.com/rust-lang/rust/pull/72234/ +[72239]: https://github.com/rust-lang/rust/pull/72239/ +[72397]: https://github.com/rust-lang/rust/pull/72397/ +[72413]: https://github.com/rust-lang/rust/pull/72413/ +[72014]: https://github.com/rust-lang/rust/pull/72014/ +[72062]: https://github.com/rust-lang/rust/pull/72062/ +[72094]: https://github.com/rust-lang/rust/pull/72094/ +[72133]: https://github.com/rust-lang/rust/pull/72133/ +[71900]: https://github.com/rust-lang/rust/pull/71900/ +[71928]: https://github.com/rust-lang/rust/pull/71928/ +[71662]: https://github.com/rust-lang/rust/pull/71662/ +[71716]: https://github.com/rust-lang/rust/pull/71716/ +[71447]: https://github.com/rust-lang/rust/pull/71447/ +[71269]: https://github.com/rust-lang/rust/pull/71269/ +[71095]: https://github.com/rust-lang/rust/pull/71095/ +[71140]: https://github.com/rust-lang/rust/pull/71140/ +[70655]: https://github.com/rust-lang/rust/pull/70655/ +[70705]: https://github.com/rust-lang/rust/pull/70705/ +[69984]: https://github.com/rust-lang/rust/pull/69984/ +[69813]: https://github.com/rust-lang/rust/pull/69813/ +[69464]: https://github.com/rust-lang/rust/pull/69464/ +[68717]: https://github.com/rust-lang/rust/pull/68717/ +[cargo/8066]: https://github.com/rust-lang/cargo/pull/8066 +[`Arc::as_ptr`]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.as_ptr +[`BTreeMap::remove_entry`]: https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.remove_entry +[`Rc::as_ptr`]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.as_ptr +[`rc::Weak::as_ptr`]: https://doc.rust-lang.org/stable/std/rc/struct.Weak.html#method.as_ptr +[`rc::Weak::from_raw`]: https://doc.rust-lang.org/stable/std/rc/struct.Weak.html#method.from_raw +[`rc::Weak::into_raw`]: https://doc.rust-lang.org/stable/std/rc/struct.Weak.html#method.into_raw +[`sync::Weak::as_ptr`]: https://doc.rust-lang.org/stable/std/sync/struct.Weak.html#method.as_ptr +[`sync::Weak::from_raw`]: https://doc.rust-lang.org/stable/std/sync/struct.Weak.html#method.from_raw +[`sync::Weak::into_raw`]: https://doc.rust-lang.org/stable/std/sync/struct.Weak.html#method.into_raw +[`str::strip_prefix`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.strip_prefix +[`str::strip_suffix`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.strip_suffix +[`char::UNICODE_VERSION`]: https://doc.rust-lang.org/stable/std/char/constant.UNICODE_VERSION.html +[`Span::resolved_at`]: https://doc.rust-lang.org/stable/proc_macro/struct.Span.html#method.resolved_at +[`Span::located_at`]: https://doc.rust-lang.org/stable/proc_macro/struct.Span.html#method.located_at +[`Span::mixed_site`]: https://doc.rust-lang.org/stable/proc_macro/struct.Span.html#method.mixed_site +[`unix::process::CommandExt::arg0`]: https://doc.rust-lang.org/std/os/unix/process/trait.CommandExt.html#tymethod.arg0 + + +Version 1.44.1 (2020-06-18) +=========================== + +* [rustfmt accepts rustfmt_skip in cfg_attr again.][73078] +* [Don't hash executable filenames on apple platforms, fixing backtraces.][cargo/8329] +* [Fix crashes when finding backtrace on macOS.][71397] +* [Clippy applies lint levels into different files.][clippy/5356] + +[71397]: https://github.com/rust-lang/rust/issues/71397 +[73078]: https://github.com/rust-lang/rust/issues/73078 +[cargo/8329]: https://github.com/rust-lang/cargo/pull/8329 +[clippy/5356]: https://github.com/rust-lang/rust-clippy/issues/5356 + + Version 1.44.0 (2020-06-04) ==========================