+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 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]
+ }
+
+ impl<T, const LENGTH: usize> GenericArray<T, LENGTH> {
+ const fn last(&self) -> Option<&T> {
+ if LENGTH == 0 {
+ None
+ } else {
+ Some(&self.inner[LENGTH - 1])
+ }
+ }
+ }
+ ```
+
+
+Compiler
+--------
+
+- [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]
+
+\* Refer to Rust's [platform support page][platform-support-doc] for more
+information on Rust's tiered platform support.
+
+Libraries
+---------
+
+- [`Box::downcast` is now also implemented for any `dyn Any + Send + Sync` object.][80945]
+- [`str` now implements `AsMut<str>`.][80279]
+- [`u64` and `u128` now implement `From<char>`.][79502]
+- [`Error` is now implemented for `&T` where `T` implements `Error`.][75180]
+- [`Poll::{map_ok, map_err}` are now implemented for `Poll<Option<Result<T, E>>>`.][80968]
+- [`unsigned_abs` is now implemented for all signed integer types.][80959]
+- [`io::Empty` now implements `io::Seek`.][78044]
+- [`rc::Weak<T>` and `sync::Weak<T>`'s methods such as `as_ptr` are now implemented for
+ `T: ?Sized` types.][80764]
+
+Stabilized APIs
+---------------
+
+- [`Arc::decrement_strong_count`]
+- [`Arc::increment_strong_count`]
+- [`Once::call_once_force`]
+- [`Peekable::next_if_eq`]
+- [`Peekable::next_if`]
+- [`Seek::stream_position`]
+- [`array::IntoIter`]
+- [`panic::panic_any`]
+- [`ptr::addr_of!`]
+- [`ptr::addr_of_mut!`]
+- [`slice::fill_with`]
+- [`slice::split_inclusive_mut`]
+- [`slice::split_inclusive`]
+- [`slice::strip_prefix`]
+- [`slice::strip_suffix`]
+- [`str::split_inclusive`]
+- [`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 with a `std` feature in a build scripts and
+ proc-macros, while using the `no-std` feature in the final binary. See the
+ [Cargo book documentation][feature-resolver@2.0] for more information on the feature.
+
+Rustdoc
+-------
+
+- [Rustdoc will now include documentation for methods available from _nested_ `Deref` traits.][80653]
+- [You can now provide a `--default-theme` flag which sets the default theme to use for
+ documentation.][79642]
+
+Various improvements to intra-doc links:
+
+- [You can link to non-path primitives such as `slice`.][80181]
+- [You can link to associated items.][74489]
+- [You can now include generic parameters when linking to items, like `Vec<T>`.][76934]
+
+Misc
+----
+- [You can now pass `--include-ignored` to tests (e.g. with
+ `cargo test -- --include-ignored`) to include testing tests marked `#[ignore]`.][80053]
+
+Compatibility Notes
+-------------------
+
+- [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]
+- [The minimum version of glibc for the following platforms has been bumped to version 2.31
+ for the distributed artifacts.][81521]
+ - `armv5te-unknown-linux-gnueabi`
+ - `sparc64-unknown-linux-gnu`
+ - `thumbv7neon-unknown-linux-gnueabihf`
+ - `armv7-unknown-linux-gnueabi`
+ - `x86_64-unknown-linux-gnux32`
+
+Internal Only
+-------------
+
+- [Consistently avoid constructing optimized MIR when not doing codegen][80718]
+
+[79135]: https://github.com/rust-lang/rust/pull/79135
+[74489]: https://github.com/rust-lang/rust/pull/74489
+[76934]: https://github.com/rust-lang/rust/pull/76934
+[79570]: https://github.com/rust-lang/rust/pull/79570
+[80181]: https://github.com/rust-lang/rust/pull/80181
+[79642]: https://github.com/rust-lang/rust/pull/79642
+[80945]: https://github.com/rust-lang/rust/pull/80945
+[80279]: https://github.com/rust-lang/rust/pull/80279
+[80053]: https://github.com/rust-lang/rust/pull/80053
+[79502]: https://github.com/rust-lang/rust/pull/79502
+[75180]: https://github.com/rust-lang/rust/pull/75180
+[79135]: https://github.com/rust-lang/rust/pull/79135
+[81521]: https://github.com/rust-lang/rust/pull/81521
+[80968]: https://github.com/rust-lang/rust/pull/80968
+[80959]: https://github.com/rust-lang/rust/pull/80959
+[80718]: https://github.com/rust-lang/rust/pull/80718
+[80653]: https://github.com/rust-lang/rust/pull/80653
+[80579]: https://github.com/rust-lang/rust/pull/80579
+[79998]: https://github.com/rust-lang/rust/pull/79998
+[78044]: https://github.com/rust-lang/rust/pull/78044
+[81455]: https://github.com/rust-lang/rust/pull/81455
+[80764]: https://github.com/rust-lang/rust/pull/80764
+[80749]: https://github.com/rust-lang/rust/pull/80749
+[80662]: https://github.com/rust-lang/rust/pull/80662
+[cargo/8997]: https://github.com/rust-lang/cargo/pull/8997
+[cargo/9112]: https://github.com/rust-lang/cargo/pull/9112
+[feature-resolver@2.0]: https://doc.rust-lang.org/nightly/cargo/reference/features.html#feature-resolver-version-2
+[`Once::call_once_force`]: https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.call_once_force
+[`sync::OnceState`]: https://doc.rust-lang.org/stable/std/sync/struct.OnceState.html
+[`panic::panic_any`]: https://doc.rust-lang.org/stable/std/panic/fn.panic_any.html
+[`slice::strip_prefix`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.strip_prefix
+[`slice::strip_suffix`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.strip_prefix
+[`Arc::increment_strong_count`]: https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.increment_strong_count
+[`Arc::decrement_strong_count`]: https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.decrement_strong_count
+[`slice::fill_with`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.fill_with
+[`ptr::addr_of!`]: https://doc.rust-lang.org/nightly/std/ptr/macro.addr_of.html
+[`ptr::addr_of_mut!`]: https://doc.rust-lang.org/nightly/std/ptr/macro.addr_of_mut.html
+[`array::IntoIter`]: https://doc.rust-lang.org/nightly/std/array/struct.IntoIter.html
+[`slice::split_inclusive`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_inclusive
+[`slice::split_inclusive_mut`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_inclusive_mut
+[`str::split_inclusive`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_inclusive
+[`task::Wake`]: https://doc.rust-lang.org/nightly/std/task/trait.Wake.html
+[`Seek::stream_position`]: https://doc.rust-lang.org/nightly/std/io/trait.Seek.html#method.stream_position
+[`Peekable::next_if`]: https://doc.rust-lang.org/nightly/std/iter/struct.Peekable.html#method.next_if
+[`Peekable::next_if_eq`]: https://doc.rust-lang.org/nightly/std/iter/struct.Peekable.html#method.next_if_eq
+
Version 1.50.0 (2021-02-11)
============================
- [The `x86_64-unknown-freebsd` is now built with the full toolset.][79484]
- [Dropped support for all cloudabi targets.][78439]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
- [Output from threads spawned in tests is now captured.][78227]
- [Change os and vendor values to "none" and "unknown" for some targets][78951]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
Note: If you're using cargo you must explicitly pass the `--target` flag.
- [Added tier 2\* support for `aarch64-unknown-linux-musl`.][76420]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
- [Upgrade the FreeBSD toolchain to version 11.4][75204]
- [`RUST_BACKTRACE`'s output is now more compact.][75048]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
- [Added tier 3 support for the `thumbv7a-uwp-windows-msvc` target.][72133]
- [Upgraded to LLVM 10.][67759]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
pointing to the location where they were called, rather than
`core`'s internals. ][67887]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
- [You can now provide `--extern` flag without a path, indicating that it is
available from the search path or specified with an `-L` flag.][64882]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
[argfile-docs]: https://doc.rust-lang.org/nightly/rustc/command-line-arguments.html#path-load-command-line-flags-from-a-path
- [Added tier 3 support for the `mips64-unknown-linux-muslabi64`, and
`mips64el-unknown-linux-muslabi64` targets.][65843]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
output of successful tests.][62600]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
- [Added tier 3 support for the `riscv32i-unknown-none-elf` target.][62784]
- [Upgraded to LLVM 9.][62592]
-\* Refer to Rust's [platform support page][forge-platform-support] for more
+\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.
Libraries
[`Duration::mul_f32`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.mul_f32
[`Duration::mul_f64`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.mul_f64
[`any::type_name`]: https://doc.rust-lang.org/std/any/fn.type_name.html
-[forge-platform-support]: https://forge.rust-lang.org/release/platform-support.html
+[platform-support-doc]: https://doc.rust-lang.org/nightly/rustc/platform-support.html
[pipeline-internals]: https://internals.rust-lang.org/t/evaluating-pipelined-rustc-compilation/10199
Version 1.37.0 (2019-08-15)
projects / rust.git / blobdiff