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Add AArch64 big-endian and ILP32 targets #81455

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merged 9 commits into from
Feb 3, 2021
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Amanieu
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@Amanieu Amanieu commented Jan 27, 2021

This PR adds 3 new AArch64 targets:

  • aarch64_be-unknown-linux-gnu
  • aarch64-unknown-linux-gnu_ilp32
  • aarch64_be-unknown-linux-gnu_ilp32

It also fixes some ABI issues on big-endian ARM and AArch64.

@rust-highfive
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r? @varkor

(rust-highfive has picked a reviewer for you, use r? to override)

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⚠️ Warning ⚠️

  • These commits modify submodules.

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jan 27, 2021
@nagisa
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nagisa commented Jan 28, 2021

Are the underscore separation conventional in other toolchains? At least in Rust the existing be/le capable targets didn't use the underscore in the arch portion of the triple (e.g. powerpc64 vs powerpc64le).

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Amanieu commented Jan 28, 2021

Both aarch64_be and gnu_ilp32 are used by GCC for their target triples.

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varkor commented Jan 31, 2021

@bors r+

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bors commented Jan 31, 2021

📌 Commit fc156a3 has been approved by varkor

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 31, 2021
JohnTitor added a commit to JohnTitor/rust that referenced this pull request Feb 1, 2021
Add AArch64 big-endian and ILP32 targets

This PR adds 3 new AArch64 targets:
- `aarch64_be-unknown-linux-gnu`
- `aarch64-unknown-linux-gnu_ilp32`
- `aarch64_be-unknown-linux-gnu_ilp32`

It also fixes some ABI issues on big-endian ARM and AArch64.
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Failed in rollup: #81620 (comment)
libc update causes deprecate warnings, cc rust-lang/libc#1848
@bors r-

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Feb 1, 2021
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Amanieu commented Feb 2, 2021

I've updated libc to fix the issue.

I've also fixed some type definitions in std::os::raw. This is technically a breaking change, but the previous definitions were completely incorrect.

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sanxiyn commented Feb 2, 2021

@bors r+

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bors commented Feb 2, 2021

📌 Commit 3408c58 has been approved by sanxiyn

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Feb 2, 2021
m-ou-se added a commit to m-ou-se/rust that referenced this pull request Feb 2, 2021
Add AArch64 big-endian and ILP32 targets

This PR adds 3 new AArch64 targets:
- `aarch64_be-unknown-linux-gnu`
- `aarch64-unknown-linux-gnu_ilp32`
- `aarch64_be-unknown-linux-gnu_ilp32`

It also fixes some ABI issues on big-endian ARM and AArch64.
jackh726 added a commit to jackh726/rust that referenced this pull request Feb 2, 2021
Add AArch64 big-endian and ILP32 targets

This PR adds 3 new AArch64 targets:
- `aarch64_be-unknown-linux-gnu`
- `aarch64-unknown-linux-gnu_ilp32`
- `aarch64_be-unknown-linux-gnu_ilp32`

It also fixes some ABI issues on big-endian ARM and AArch64.
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 2, 2021
Rollup of 14 pull requests

Successful merges:

 - rust-lang#80593 (Upgrade Chalk)
 - rust-lang#81260 (Add .editorconfig)
 - rust-lang#81455 (Add AArch64 big-endian and ILP32 targets)
 - rust-lang#81517 (Remove remnants of the santizer runtime crates from bootstrap)
 - rust-lang#81530 (sys: use `process::abort()` instead of `arch::wasm32::unreachable()`)
 - rust-lang#81544 (Add better diagnostic for unbounded Abst. Const)
 - rust-lang#81588 (Add doc aliases for "delete")
 - rust-lang#81603 (rustbuild: Don't build compiler twice for error-index-generator.)
 - rust-lang#81634 (Add long explanation e0521)
 - rust-lang#81636 (Directly use `Option<&[T]>` instead of converting from `Option<&Vec<T>>` later on)
 - rust-lang#81647 (Fix bug with assert!() calling the wrong edition of panic!().)
 - rust-lang#81655 (Improve wording of suggestion about accessing field)
 - rust-lang#81665 (Fix out of date `Scalar` documentation)
 - rust-lang#81671 (Add more associated type tests)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 399c0a8 into rust-lang:master Feb 3, 2021
@rustbot rustbot added this to the 1.51.0 milestone Feb 3, 2021
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Feb 3, 2021
Make remote-test-server easier to use with new targets

While testing rust-lang#81455 I encountered 2 issues with `remote-test-server`:
- It is built with the stage 0 toolchain, which does not support a newly added target.
- It overwrites `LD_LIBRARY_PATH` instead of appending to it, which prevents the use of a custom sysroot for target libraries.
m-ou-se added a commit to m-ou-se/rust that referenced this pull request Feb 5, 2021
Make remote-test-server easier to use with new targets

While testing rust-lang#81455 I encountered 2 issues with `remote-test-server`:
- It is built with the stage 0 toolchain, which does not support a newly added target.
- It overwrites `LD_LIBRARY_PATH` instead of appending to it, which prevents the use of a custom sysroot for target libraries.
m-ou-se added a commit to m-ou-se/rust that referenced this pull request Feb 5, 2021
Make remote-test-server easier to use with new targets

While testing rust-lang#81455 I encountered 2 issues with `remote-test-server`:
- It is built with the stage 0 toolchain, which does not support a newly added target.
- It overwrites `LD_LIBRARY_PATH` instead of appending to it, which prevents the use of a custom sysroot for target libraries.
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Needs relnotes, yes?

@Amanieu Amanieu added the relnotes Marks issues that should be documented in the release notes of the next release. label Feb 9, 2021
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Amanieu commented Feb 9, 2021

Added.

wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request Apr 10, 2021
Pkgsrc changes:
 * Remove one SunOS patch, apparently no longer needed.
 * Adapt one patch for Darwin, adjust cargo checksum accordingly.
 * Adjust bootstraps to version 1.50.0.

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]
- [Rust now uses `inline-asm` for stack probes when used with LLVM
  11.0.1+][77885]

\* Refer to Rust's [platform support page][forge-platform-support]
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 `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]: rust-lang/rust#79135
[74489]: rust-lang/rust#74489
[76934]: rust-lang/rust#76934
[79570]: rust-lang/rust#79570
[80181]: rust-lang/rust#80181
[79642]: rust-lang/rust#79642
[80945]: rust-lang/rust#80945
[80279]: rust-lang/rust#80279
[80053]: rust-lang/rust#80053
[79502]: rust-lang/rust#79502
[75180]: rust-lang/rust#75180
[79135]: rust-lang/rust#79135
[81521]: rust-lang/rust#81521
[80968]: rust-lang/rust#80968
[80959]: rust-lang/rust#80959
[80718]: rust-lang/rust#80718
[80653]: rust-lang/rust#80653
[80579]: rust-lang/rust#80579
[79998]: rust-lang/rust#79998
[78044]: rust-lang/rust#78044
[81455]: rust-lang/rust#81455
[80764]: rust-lang/rust#80764
[80749]: rust-lang/rust#80749
[80662]: rust-lang/rust#80662
[77885]: rust-lang/rust#77885
[cargo/8997]: rust-lang/cargo#8997
[cargo/9112]: rust-lang/cargo#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
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request May 26, 2021
Pkgsrc changes:
 * Add support for the big-endian arm64 NetBSD target (aarch64_be).
 * On NetBSD/i386, use the i586 (pentium) bootstrap kit variant in
   preference to i686.
 * Adjust patches, re-compute line offsets, re-compute crate checksums.
 * Remove a patch which was either integrated upstream and/or no longer
   applies.
 * Bump bootstraps to 1.50.0.
 * Move conditionals until after bsd.prefs.mk so that they work...
 * Default to "dist" build target if cross-compiling, but allow
   also to override via rust.BUILD_TARGET.
 * Allow overriding MAKE_JOBS_SAFE via rust.MAKE_JOBS_SAFE if you
   want a different trade-off between occasional breakage and performance.
 * Adjust platform.mk according to work already done in wip/rust/
 * Add a patch to optimize the install.sh script used to install binary
   bootstraps to not do so many forks; use case/esac and parameter expansion
   instead of grep, sed and cut.
 * Drop building documentation for the binary bootstrap kits.  This will
   also impact the lang/rust-bin package.  For full documentation, build
   or install lang/rust as a package.

Upstream changes:

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]
- [`Div` and `Rem` by their `NonZero` variant is now implemented
  for all unsigned integers.][79134]

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`]
- [`VecDeque::range`]
- [`VecDeque::range_mut`]

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`
- [`atomic::spin_loop_hint` has been deprecated.][80966] It's
  recommended to use `hint::spin_loop` instead.

Internal Only
-------------

- [Consistently avoid constructing optimized MIR when not doing codegen][80718]

[79135]: rust-lang/rust#79135
[74489]: rust-lang/rust#74489
[76934]: rust-lang/rust#76934
[79570]: rust-lang/rust#79570
[80181]: rust-lang/rust#80181
[79642]: rust-lang/rust#79642
[80945]: rust-lang/rust#80945
[80279]: rust-lang/rust#80279
[80053]: rust-lang/rust#80053
[79502]: rust-lang/rust#79502
[75180]: rust-lang/rust#75180
[79135]: rust-lang/rust#79135
[81521]: rust-lang/rust#81521
[80968]: rust-lang/rust#80968
[80959]: rust-lang/rust#80959
[80718]: rust-lang/rust#80718
[80653]: rust-lang/rust#80653
[80579]: rust-lang/rust#80579
[79998]: rust-lang/rust#79998
[78044]: rust-lang/rust#78044
[81455]: rust-lang/rust#81455
[80764]: rust-lang/rust#80764
[80749]: rust-lang/rust#80749
[80662]: rust-lang/rust#80662
[79134]: rust-lang/rust#79134
[80966]: rust-lang/rust#80966
[cargo/8997]: rust-lang/cargo#8997
[cargo/9112]: rust-lang/cargo#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
[`VecDeque::range`]: https://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.range
[`VecDeque::range_mut`]: https://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.range_mut
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relnotes Marks issues that should be documented in the release notes of the next release. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion.
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