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Pkgsrc changes:
* Adjust patches, re-compute line offsets, fix capitalization.
* Remove i686/FreeBSD support, no longer provided upstream.
* Bump bootstraps to 1.49.0.
* Change USE_TOOLS from bsdtar to gtar.
* Reduce diffs to pkgsrc-wip package patches.
* Allow rust.BUILD_TARGET to override automatic choice of target.
* Add an i586/NetBSD (pentium) bootstrap variant (needs testing),
not yet added as bootstrap since 1.49 doesn't have that variant.
Upstream changes:
Version 1.50.0 (2021-02-11)
============================
Language
-----------------------
- [You can now use `const` values for `x` in `[x; N]` array
expressions.][79270] This has been technically possible since
1.38.0, as it was unintentionally stabilized.
- [Assignments to `ManuallyDrop<T>` union fields are now considered
safe.][78068]
Compiler
-----------------------
- [Added tier 3\* support for the `armv5te-unknown-linux-uclibceabi`
target.][78142]
- [Added tier 3 support for the `aarch64-apple-ios-macabi` target.][77484]
- [The `x86_64-unknown-freebsd` is now built with the full toolset.][79484]
\* Refer to Rust's [platform support page][forge-platform-support] for more
information on Rust's tiered platform support.
Libraries
-----------------------
- [`proc_macro::Punct` now implements `PartialEq<char>`.][78636]
- [`ops::{Index, IndexMut}` are now implemented for fixed sized
arrays of any length.][74989]
- [On Unix platforms, the `std::fs::File` type now has a "niche"
of `-1`.][74699] This value cannot be a valid file descriptor,
and now means `Option<File>` takes up the same amount of space
as `File`.
Stabilized APIs
---------------
- [`bool::then`]
- [`btree_map::Entry::or_insert_with_key`]
- [`f32::clamp`]
- [`f64::clamp`]
- [`hash_map::Entry::or_insert_with_key`]
- [`Ord::clamp`]
- [`RefCell::take`]
- [`slice::fill`]
- [`UnsafeCell::get_mut`]
The following previously stable methods are now `const`.
- [`IpAddr::is_ipv4`]
- [`IpAddr::is_ipv6`]
- [`Layout::size`]
- [`Layout::align`]
- [`Layout::from_size_align`]
- `pow` for all integer types.
- `checked_pow` for all integer types.
- `saturating_pow` for all integer types.
- `wrapping_pow` for all integer types.
- `next_power_of_two` for all unsigned integer types.
- `checked_power_of_two` for all unsigned integer types.
Cargo
-----------------------
- [Added the `[build.rustc-workspace-wrapper]` option.][cargo/8976]
This option sets a wrapper to execute instead of `rustc`, for
workspace members only.
- [`cargo:rerun-if-changed` will now, if provided a directory, scan the entire
contents of that directory for changes.][cargo/8973]
- [Added the `--workspace` flag to the `cargo update` command.][cargo/8725]
Misc
----
- [The search results tab and the help button are focusable with
keyboard in rustdoc.][79896]
- [Running tests will now print the total time taken to execute.][75752]
Compatibility Notes
-------------------
- [The `compare_and_swap` method on atomics has been deprecated.][79261]
It's recommended to use the `compare_exchange` and
`compare_exchange_weak` methods instead.
- [Changes in how `TokenStream`s are checked have fixed some cases
where you could write unhygenic `macro_rules!` macros.][79472]
- [`#![test]` as an inner attribute is now considered unstable like
other inner macro attributes, and reports an error by default
through the `soft_unstable` lint.][79003]
- [Overriding a `forbid` lint at the same level that it was set is
now a hard error.][78864]
- [Dropped support for all cloudabi targets.][78439]
- [You can no longer intercept `panic!` calls by supplying your
own macro.][78343] It's recommended to use the `#[panic_handler]`
attribute to provide your own implementation.
- [Semi-colons after item statements (e.g. `struct Foo {};`) now
produce a warning.][78296]
[74989]: rust-lang/rust#74989
[79261]: rust-lang/rust#79261
[79896]: rust-lang/rust#79896
[79484]: rust-lang/rust#79484
[79472]: rust-lang/rust#79472
[79270]: rust-lang/rust#79270
[79003]: rust-lang/rust#79003
[78864]: rust-lang/rust#78864
[78636]: rust-lang/rust#78636
[78439]: rust-lang/rust#78439
[78343]: rust-lang/rust#78343
[78296]: rust-lang/rust#78296
[78068]: rust-lang/rust#78068
[75752]: rust-lang/rust#75752
[74699]: rust-lang/rust#74699
[78142]: rust-lang/rust#78142
[77484]: rust-lang/rust#77484
[cargo/8976]: rust-lang/cargo#8976
[cargo/8973]: rust-lang/cargo#8973
[cargo/8725]: rust-lang/cargo#8725
[`IpAddr::is_ipv4`]: https://doc.rust-lang.org/stable/std/net/enum.IpAddr.html#method.is_ipv4
[`IpAddr::is_ipv6`]: https://doc.rust-lang.org/stable/std/net/enum.IpAddr.html#method.is_ipv6
[`Layout::align`]: https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.align
[`Layout::from_size_align`]: https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.from_size_align
[`Layout::size`]: https://doc.rust-lang.org/stable/std/alloc/struct.Layout.html#method.size
[`Ord::clamp`]: https://doc.rust-lang.org/stable/std/cmp/trait.Ord.html#method.clamp
[`RefCell::take`]: https://doc.rust-lang.org/stable/std/cell/struct.RefCell.html#method.take
[`UnsafeCell::get_mut`]: https://doc.rust-lang.org/stable/std/cell/struct.UnsafeCell.html#method.get_mut
[`bool::then`]: https://doc.rust-lang.org/stable/std/primitive.bool.html#method.then
[`btree_map::Entry::or_insert_with_key`]: https://doc.rust-lang.org/stable/std/collections/btree_map/enum.Entry.html#method.or_insert_with_key
[`f32::clamp`]: https://doc.rust-lang.org/stable/std/primitive.f32.html#method.clamp
[`f64::clamp`]: https://doc.rust-lang.org/stable/std/primitive.f64.html#method.clamp
[`hash_map::Entry::or_insert_with_key`]: https://doc.rust-lang.org/stable/std/collections/hash_map/enum.Entry.html#method.or_insert_with_key
[`slice::fill`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.fill- Loading branch information
