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RELEASES.md
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@ -4,8 +4,9 @@ Version 1.51.0 (2021-03-25)
Language
--------
- [You can now parameterize items such as functions, traits, and `struct`s by constant
values in addition to by types.][79135] E.g. you can now write the following. Note:
Only values of primitive integers, `bool`, or `char` types are currently permitted.
values in addition to by types and lifetimes.][79135] Also known as "const generics"
E.g. you can now write the following. Note: Only values of primitive integers,
`bool`, or `char` types are currently permitted.
```rust
struct GenericArray<T, const LENGTH: usize> {
inner: [T; LENGTH]
@ -26,10 +27,11 @@ Language
Compiler
--------
- [Added the `-Csplit-debuginfo` codegen option.][79570] This option controls whether
debug information is split across multiple files or packed into a single file.
- [Added tier 3\* support for `aarch64_be-unknown-linux-gnu`, `aarch64-unknown-linux-gnu_ilp32`,
and `aarch64_be-unknown-linux-gnu_ilp32` targets.][81455]
- [Added the `-Csplit-debuginfo` codegen option for macOS platforms.][79570]
This option controls whether debug information is split across multiple files
or packed into a single file. **Note** This option is unstable on other platforms.
- [Added tier 3\* support for `aarch64_be-unknown-linux-gnu`,
`aarch64-unknown-linux-gnu_ilp32`, and `aarch64_be-unknown-linux-gnu_ilp32` targets.][81455]
- [Added tier 3 support for `i386-unknown-linux-gnu` and `i486-unknown-linux-gnu` targets.][80662]
- [The `target-cpu=native` option will now detect individual features of CPUs.][80749]
- [Rust now uses `inline-asm` for stack probes when used with LLVM 11.0.1+][77885]
@ -72,6 +74,21 @@ Stabilized APIs
- [`sync::OnceState`]
- [`task::Wake`]
Cargo
-----
- [Added the `split-debuginfo` profile option to control the -Csplit-debuginfo
codegen option.][cargo/9112]
- [Added the `resolver` field to `Cargo.toml` to enable the new feature resolver
and CLI option behavior.][cargo/8997] Version 2 of the feature resolver will try
to avoid unifying features of dependencies where that unification could be unwanted.
Such as using the same dependency at build time (such as build scripts and
proc-macros). See the [Cargo book documentation][feature-resolver@2.0]
for more information on the feature.
[feature-resolver@2.0]: https://doc.rust-lang.org/nightly/cargo/reference/features.html#feature-resolver-version-2
[cargo/8997]: https://github.com/rust-lang/cargo/pull/8997
[cargo/9112]: https://github.com/rust-lang/cargo/pull/9112
Rustdoc
-------
@ -94,7 +111,7 @@ Compatibility Notes
-------------------
- [Bumped the minimum `g++` for `linux-gnu` targets to `g++-8` from `g++-7`.][81521]
- [WASI platforms no longer use the `wasm-bindgen` ABI.][79998]
- [WASI platforms no longer use the `wasm-bindgen` ABI, and instead use the wasm32 ABI.][79998]
- [`rustc` no longer promotes division, modulo and indexing operations to `const` that
could fail.][80579]