diff --git a/RELEASES.md b/RELEASES.md index 355e53cbed25c..51cd6578ec531 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -1,3 +1,121 @@ +Version 1.37.0 (2019-08-15) +========================== + +Language +-------- +- `#[must_use]` will now warn if the type is contained in a [tuple][61100], + [`Box`][62228], or an [array][62235] and unused. +- [You can now use the `cfg` and `cfg_attr` attributes on + generic parameters.][61547] +- [You can now use enum variants through type alias.][61682] e.g. You can + write the following: + ```rust + type MyOption = Option; + + fn increment_or_zero(x: MyOption) -> u8 { + match x { + MyOption::Some(y) => y + 1, + MyOption::None => 0, + } + } + ``` +- [You can now use `_` as an identifier for consts.][61347] e.g. You can write + `const _: u32 = 5;`. +- [You can now use `#[repr(align(X)]` on enums.][61229] +- [The `?`/_"Kleene"_ macro operator is now available in the + 2015 edition.][60932] + +Compiler +-------- +- [You can now enable Profile-Guided Optimization with the `-C profile-generate` + and `-C profile-use` flags.][61268] For more information on how to use profile + guided optimization, please refer to the [rustc book][rustc-book-pgo]. +- [The `rust-lldb` wrapper script should now work again.][61827] + +Libraries +--------- +- [`mem::MaybeUninit` is now ABI-compatible with `T`.][61802] + +Stabilized APIs +--------------- +- [`BufReader::buffer`] +- [`BufWriter::buffer`] +- [`Cell::from_mut`] +- [`Cell<[T]>::as_slice_of_cells`][`Cell::as_slice_of_cells`] +- [`DoubleEndedIterator::nth_back`] +- [`Option::xor`] +- [`Wrapping::reverse_bits`] +- [`i128::reverse_bits`] +- [`i16::reverse_bits`] +- [`i32::reverse_bits`] +- [`i64::reverse_bits`] +- [`i8::reverse_bits`] +- [`isize::reverse_bits`] +- [`slice::copy_within`] +- [`u128::reverse_bits`] +- [`u16::reverse_bits`] +- [`u32::reverse_bits`] +- [`u64::reverse_bits`] +- [`u8::reverse_bits`] +- [`usize::reverse_bits`] + +Cargo +----- +- [`Cargo.lock` files are now included by default when publishing executable crates + with executables.][cargo/7026] +- [You can now specify `default-run="foo"` in `[package]` to specify the + default executable to use for `cargo run`.][cargo/7056] + +Misc +---- + +Compatibility Notes +------------------- +- [Using `...` for inclusive range patterns will now warn by default.][61342] + Please transition your code to using the `..=` syntax for inclusive + ranges instead. +- [Using a trait object without the `dyn` will now warn by default.][61203] + Please transition your code to use `dyn Trait` for trait objects instead. + +[62228]: https://github.com/rust-lang/rust/pull/62228/ +[62235]: https://github.com/rust-lang/rust/pull/62235/ +[61802]: https://github.com/rust-lang/rust/pull/61802/ +[61827]: https://github.com/rust-lang/rust/pull/61827/ +[61547]: https://github.com/rust-lang/rust/pull/61547/ +[61682]: https://github.com/rust-lang/rust/pull/61682/ +[61268]: https://github.com/rust-lang/rust/pull/61268/ +[61342]: https://github.com/rust-lang/rust/pull/61342/ +[61347]: https://github.com/rust-lang/rust/pull/61347/ +[61100]: https://github.com/rust-lang/rust/pull/61100/ +[61203]: https://github.com/rust-lang/rust/pull/61203/ +[61229]: https://github.com/rust-lang/rust/pull/61229/ +[60932]: https://github.com/rust-lang/rust/pull/60932/ +[cargo/7026]: https://github.com/rust-lang/cargo/pull/7026/ +[cargo/7056]: https://github.com/rust-lang/cargo/pull/7056/ +[`BufReader::buffer`]: https://doc.rust-lang.org/std/io/struct.BufReader.html#method.buffer +[`BufWriter::buffer`]: https://doc.rust-lang.org/std/io/struct.BufWriter.html#method.buffer +[`Cell::from_mut`]: https://doc.rust-lang.org/std/cell/struct.Cell.html#method.from_mut +[`Cell::as_slice_of_cells`]: https://doc.rust-lang.org/std/cell/struct.Cell.html#method.as_slice_of_cells +[`DoubleEndedIterator::nth_back`]: https://doc.rust-lang.org/std/iter/trait.DoubleEndedIterator.html#method.nth_back +[`Option::xor`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.xor +[`RefCell::try_borrow_unguarded`]: https://doc.rust-lang.org/std/cell/struct.RefCell.html#method.try_borrow_unguarded +[`Wrapping::reverse_bits`]: https://doc.rust-lang.org/std/num/struct.Wrapping.html#method.reverse_bits +[`i128::reverse_bits`]: https://doc.rust-lang.org/std/primitive.i128.html#method.reverse_bits +[`i16::reverse_bits`]: https://doc.rust-lang.org/std/primitive.i16.html#method.reverse_bits +[`i32::reverse_bits`]: https://doc.rust-lang.org/std/primitive.i32.html#method.reverse_bits +[`i64::reverse_bits`]: https://doc.rust-lang.org/std/primitive.i64.html#method.reverse_bits +[`i8::reverse_bits`]: https://doc.rust-lang.org/std/primitive.i8.html#method.reverse_bits +[`isize::reverse_bits`]: https://doc.rust-lang.org/std/primitive.isize.html#method.reverse_bits +[`slice::copy_within`]: https://doc.rust-lang.org/std/primitive.slice.html#method.copy_within +[`u128::reverse_bits`]: https://doc.rust-lang.org/std/primitive.u128.html#method.reverse_bits +[`u16::reverse_bits`]: https://doc.rust-lang.org/std/primitive.u16.html#method.reverse_bits +[`u32::reverse_bits`]: https://doc.rust-lang.org/std/primitive.u32.html#method.reverse_bits +[`u64::reverse_bits`]: https://doc.rust-lang.org/std/primitive.u64.html#method.reverse_bits +[`u8::reverse_bits`]: https://doc.rust-lang.org/std/primitive.u8.html#method.reverse_bits +[`usize::reverse_bits`]: https://doc.rust-lang.org/std/primitive.usize.html#method.reverse_bits +[rustc-book-pgo]: https://doc.rust-lang.org/rustc/profile-guided-optimization.html + + Version 1.36.0 (2019-07-04) ========================== @@ -39,7 +157,7 @@ Stabilized APIs - [`mem::MaybeUninit`] - [`pointer::align_offset`] - [`future::Future`] -- [`task::Context`] +- [`task::Context`] - [`task::RawWaker`] - [`task::RawWakerVTable`] - [`task::Waker`]