mirror of https://github.com/rust-lang/rust.git
Auto merge of #86696 - rust-lang:relnotes-1.54.0, r=pietroalbini
Update RELEASES.md for 1.54.0 ### [Rendered](https://github.com/rust-lang/rust/blob/relnotes-1.54.0/RELEASES.md) r? `@Mark-Simulacrum` cc `@rust-lang/release`
This commit is contained in:
bors
commit
fc24bcead1
126
RELEASES.md
126
RELEASES.md
|
|
@ -1,3 +1,127 @@
|
|||
Version 1.54.0 (2021-07-29)
|
||||
============================
|
||||
|
||||
Language
|
||||
-----------------------
|
||||
|
||||
- [You can now use macros for values in built-in attribute macros.][83366]
|
||||
While a seemingly minor addition on its own, this enables a lot of
|
||||
powerful functionality when combined correctly. Most notably you can
|
||||
now include external documentation in your crate by writing the following.
|
||||
```rust
|
||||
#![doc = include_str!("README.md")]
|
||||
```
|
||||
You can also use this to include auto-generated modules:
|
||||
```rust
|
||||
#[path = concat!(env!("OUT_DIR"), "/generated.rs")]
|
||||
mod generated;
|
||||
```
|
||||
|
||||
- [You can now cast between unsized slice types (and types which contain
|
||||
unsized slices) in `const fn`.][85078]
|
||||
- [You can now use multiple generic lifetimes with `impl Trait` where the
|
||||
lifetimes don't explicitly outlive another.][84701] In code this means
|
||||
that you can now have `impl Trait<'a, 'b>` where as before you could
|
||||
only have `impl Trait<'a, 'b> where 'b: 'a`.
|
||||
|
||||
Compiler
|
||||
-----------------------
|
||||
|
||||
- [Rustc will now search for custom JSON targets in
|
||||
`/lib/rustlib/<target-triple>/target.json` where `/` is the "sysroot"
|
||||
directory.][83800] You can find your sysroot directory by running
|
||||
`rustc --print sysroot`.
|
||||
- [Added `wasm` as a `target_family` for WebAssembly platforms.][84072]
|
||||
- [You can now use `#[target_feature]` on safe functions when targeting
|
||||
WebAssembly platforms.][84988]
|
||||
- [Improved debugger output for enums on Windows MSVC platforms.][85292]
|
||||
- [Added tier 3\* support for `bpfel-unknown-none`
|
||||
and `bpfeb-unknown-none`.][79608]
|
||||
|
||||
\* Refer to Rust's [platform support page][platform-support-doc] for more
|
||||
information on Rust's tiered platform support.
|
||||
|
||||
Libraries
|
||||
-----------------------
|
||||
|
||||
- [`panic::panic_any` will now `#[track_caller]`.][85745]
|
||||
- [Added `OutOfMemory` as a variant of `io::ErrorKind`.][84744]
|
||||
- [ `proc_macro::Literal` now implements `FromStr`.][84717]
|
||||
- [The implementations of vendor intrinsics in core::arch have been
|
||||
significantly refactored.][83278] The main user-visible changes are
|
||||
a 50% reduction in the size of libcore.rlib and stricter validation
|
||||
of constant operands passed to intrinsics. The latter is technically
|
||||
a breaking change, but allows Rust to more closely match the C vendor
|
||||
intrinsics API.
|
||||
|
||||
Stabilized APIs
|
||||
---------------
|
||||
|
||||
- [`BTreeMap::into_keys`]
|
||||
- [`BTreeMap::into_values`]
|
||||
- [`HashMap::into_keys`]
|
||||
- [`HashMap::into_values`]
|
||||
- [`arch::wasm32`]
|
||||
- [`VecDeque::binary_search`]
|
||||
- [`VecDeque::binary_search_by`]
|
||||
- [`VecDeque::binary_search_by_key`]
|
||||
- [`VecDeque::partition_point`]
|
||||
|
||||
Cargo
|
||||
-----
|
||||
|
||||
- [Added the `--prune <spec>` option to `cargo-tree` to remove a package from
|
||||
the dependency graph.][cargo/9520]
|
||||
- [Added the `--depth` option to `cargo-tree` to print only to a certain depth
|
||||
in the tree ][cargo/9499]
|
||||
- [Added the `no-proc-macro` value to `cargo-tree --edges` to hide procedural
|
||||
macro dependencies.][cargo/9488]
|
||||
- [A new environment variable named `CARGO_TARGET_TMPDIR` is available.][cargo/9375]
|
||||
This variable points to a directory that integration tests and benches
|
||||
can use as a "scratchpad" for testing filesystem operations.
|
||||
|
||||
Compatibility Notes
|
||||
-------------------
|
||||
- [Mixing Option and Result via `?` is no longer permitted in closures for inferred types.][86831]
|
||||
- [Previously unsound code is no longer permitted where different constructors in branches
|
||||
could require different lifetimes.][85574]
|
||||
- As previously mentioned the [`std::arch` instrinsics now uses stricter const checking][83278]
|
||||
than before and may reject some previously accepted code.
|
||||
- [`i128` multiplication on Cortex M0+ platforms currently unconditionally causes overflow
|
||||
when compiled with `codegen-units = 1`.][86063]
|
||||
|
||||
[85574]: https://github.com/rust-lang/rust/issues/85574
|
||||
[86831]: https://github.com/rust-lang/rust/issues/86831
|
||||
[86063]: https://github.com/rust-lang/rust/issues/86063
|
||||
[86831]: https://github.com/rust-lang/rust/issues/86831
|
||||
[79608]: https://github.com/rust-lang/rust/pull/79608
|
||||
[84988]: https://github.com/rust-lang/rust/pull/84988
|
||||
[84701]: https://github.com/rust-lang/rust/pull/84701
|
||||
[84072]: https://github.com/rust-lang/rust/pull/84072
|
||||
[85745]: https://github.com/rust-lang/rust/pull/85745
|
||||
[84744]: https://github.com/rust-lang/rust/pull/84744
|
||||
[85078]: https://github.com/rust-lang/rust/pull/85078
|
||||
[84717]: https://github.com/rust-lang/rust/pull/84717
|
||||
[83800]: https://github.com/rust-lang/rust/pull/83800
|
||||
[83366]: https://github.com/rust-lang/rust/pull/83366
|
||||
[83278]: https://github.com/rust-lang/rust/pull/83278
|
||||
[85292]: https://github.com/rust-lang/rust/pull/85292
|
||||
[cargo/9520]: https://github.com/rust-lang/cargo/pull/9520
|
||||
[cargo/9499]: https://github.com/rust-lang/cargo/pull/9499
|
||||
[cargo/9488]: https://github.com/rust-lang/cargo/pull/9488
|
||||
[cargo/9375]: https://github.com/rust-lang/cargo/pull/9375
|
||||
[`BTreeMap::into_keys`]: https://doc.rust-lang.org/std/collections/struct.BTreeMap.html#method.into_keys
|
||||
[`BTreeMap::into_values`]: https://doc.rust-lang.org/std/collections/struct.BTreeMap.html#method.into_values
|
||||
[`HashMap::into_keys`]: https://doc.rust-lang.org/std/collections/struct.HashMap.html#method.into_keys
|
||||
[`HashMap::into_values`]: https://doc.rust-lang.org/std/collections/struct.HashMap.html#method.into_values
|
||||
[`arch::wasm32`]: https://doc.rust-lang.org/core/arch/wasm32/index.html
|
||||
[`VecDeque::binary_search`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.binary_search
|
||||
[`VecDeque::binary_search_by`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.binary_search_by
|
||||
|
||||
[`VecDeque::binary_search_by_key`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.binary_search_by_key
|
||||
|
||||
[`VecDeque::partition_point`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.partition_point
|
||||
|
||||
Version 1.53.0 (2021-06-17)
|
||||
============================
|
||||
|
||||
|
|
@ -1749,7 +1873,7 @@ Language
|
|||
- [You can now use `#[repr(transparent)]` on univariant `enum`s.][68122] Meaning
|
||||
that you can create an enum that has the exact layout and ABI of the type
|
||||
it contains.
|
||||
- [You can now use outer attribute procedural macros on inline modules.][64273]
|
||||
- [You can now use outer attribute procedural macros on inline modules.][64273]
|
||||
- [There are some *syntax-only* changes:][67131]
|
||||
- `default` is syntactically allowed before items in `trait` definitions.
|
||||
- Items in `impl`s (i.e. `const`s, `type`s, and `fn`s) may syntactically
|
||||
|
|
|
|||
Loading…
Reference in New Issue