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Clean up some of the pkgsrc Makefile, there's still lots in here that should just be deleted though. Switch SunOS to the illumos bootstrap by default. Version 1.48.0 (2020-11-19) ========================== Language -------- - [The `unsafe` keyword is now syntactically permitted on modules.][75857] This is still rejected *semantically*, but can now be parsed by procedural macros. Compiler -------- - [Stabilised the `-C link-self-contained=<yes|no>` compiler flag.][76158] This tells `rustc` whether to link its own C runtime and libraries or to rely on a external linker to find them. (Supported only on `windows-gnu`, `linux-musl`, and `wasi` platforms.) - [You can now use `-C target-feature=+crt-static` on `linux-gnu` targets.][77386] 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 information on Rust's tiered platform support. Libraries --------- - [`io::Write` is now implemented for `&ChildStdin` `&Sink`, `&Stdout`, and `&Stderr`.][76275] - [All arrays of any length now implement `TryFrom<Vec<T>>`.][76310] - [The `matches!` macro now supports having a trailing comma.][74880] - [`Vec<A>` now implements `PartialEq<[B]>` where `A: PartialEq<B>`.][74194] - [The `RefCell::{replace, replace_with, clone}` methods now all use `#[track_caller]`.][77055] Stabilized APIs --------------- - [`slice::as_ptr_range`] - [`slice::as_mut_ptr_range`] - [`VecDeque::make_contiguous`] - [`future::pending`] - [`future::ready`] The following previously stable methods are now `const fn`'s: - [`Option::is_some`] - [`Option::is_none`] - [`Option::as_ref`] - [`Result::is_ok`] - [`Result::is_err`] - [`Result::as_ref`] - [`Ordering::reverse`] - [`Ordering::then`] Cargo ----- Rustdoc ------- - [You can now link to items in `rustdoc` using the intra-doc link syntax.][74430] E.g. ``/// Uses [`std::future`]`` will automatically generate a link to `std::future`'s documentation. See ["Linking to items by name"][intradoc-links] for more information. - [You can now specify `#[doc(alias = "<alias>")]` on items to add search aliases when searching through `rustdoc`'s UI.][75740] Compatibility Notes ------------------- - [Promotion of references to `'static` lifetime inside `const fn` now follows the same rules as inside a `fn` body.][75502] In particular, `&foo()` will not be promoted to `'static` lifetime any more inside `const fn`s. - [Associated type bindings on trait objects are now verified to meet the bounds declared on the trait when checking that they implement the trait.][27675] - [When trait bounds on associated types or opaque types are ambiguous, the compiler no longer makes an arbitrary choice on which bound to use.][54121] - [Fixed recursive nonterminals not being expanded in macros during pretty-print/reparse check.][77153] This may cause errors if your macro wasn't correctly handling recursive nonterminal tokens. - [`&mut` references to non zero-sized types are no longer promoted.][75585] - [`rustc` will now warn if you use attributes like `#[link_name]` or `#[cold]` in places where they have no effect.][73461] - [Updated `_mm256_extract_epi8` and `_mm256_extract_epi16` signatures in `arch::{x86, x86_64}` to return `i32` to match the vendor signatures.][73166] - [`mem::uninitialized` will now panic if any inner types inside a struct or enum disallow zero-initialization.][71274] - [`#[target_feature]` will now error if used in a place where it has no effect.][78143] - [Foreign exceptions are now caught by `catch_unwind` and will cause an abort.][70212] Note: This behaviour is not guaranteed and is still considered undefined behaviour, see the [`catch_unwind`] documentation for further information. Internal Only ------------- These changes provide no direct user facing benefits, but represent significant improvements to the internals and overall performance of rustc and related tools. - [Building `rustc` from source now uses `ninja` by default over `make`.][74922] You can continue building with `make` by setting `ninja=false` in your `config.toml`. - [cg_llvm: `fewer_names` in `uncached_llvm_type`][76030] - [Made `ensure_sufficient_stack()` non-generic][76680] [78143]: rust-lang/rust#78143 [76680]: rust-lang/rust#76680 [76030]: rust-lang/rust#76030 [70212]: rust-lang/rust#70212 [27675]: rust-lang/rust#27675 [54121]: rust-lang/rust#54121 [71274]: rust-lang/rust#71274 [77386]: rust-lang/rust#77386 [77153]: rust-lang/rust#77153 [77055]: rust-lang/rust#77055 [76275]: rust-lang/rust#76275 [76310]: rust-lang/rust#76310 [76420]: rust-lang/rust#76420 [76158]: rust-lang/rust#76158 [75857]: rust-lang/rust#75857 [75585]: rust-lang/rust#75585 [75740]: rust-lang/rust#75740 [75502]: rust-lang/rust#75502 [74880]: rust-lang/rust#74880 [74922]: rust-lang/rust#74922 [74430]: rust-lang/rust#74430 [74194]: rust-lang/rust#74194 [73461]: rust-lang/rust#73461 [73166]: rust-lang/rust#73166 [intradoc-links]: https://doc.rust-lang.org/rustdoc/linking-to-items-by-name.html [`catch_unwind`]: https://doc.rust-lang.org/std/panic/fn.catch_unwind.html [`Option::is_some`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.is_some [`Option::is_none`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.is_none [`Option::as_ref`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.as_ref [`Result::is_ok`]: https://doc.rust-lang.org/std/result/enum.Result.html#method.is_ok [`Result::is_err`]: https://doc.rust-lang.org/std/result/enum.Result.html#method.is_err [`Result::as_ref`]: https://doc.rust-lang.org/std/result/enum.Result.html#method.as_ref [`Ordering::reverse`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.reverse [`Ordering::then`]: https://doc.rust-lang.org/std/cmp/enum.Ordering.html#method.then [`slice::as_ptr_range`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_ptr_range [`slice::as_mut_ptr_range`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_mut_ptr_range [`VecDeque::make_contiguous`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.make_contiguous [`future::pending`]: https://doc.rust-lang.org/std/future/fn.pending.html [`future::ready`]: https://doc.rust-lang.org/std/future/fn.ready.html
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