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Suggested-by: Caleb Cartwright <calebcartwright@users.noreply.github.com>
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Show an example that has bounds.
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In particular, lifetime-generic associated types often have a
`where Self: 'a` bound, which we can format on the same line.
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This commit fixes several issues in the fuchsia-test-runner.py script:
1. Migrate from `pm` to `ffx` for package management, as `pm` is now
deprecated. Furthermore, the `pm` calls used in this script no longer
work at Fuchsia's HEAD. This is the largest change in this commit, and
impacts all steps around repository management (creation and
registration of the repo, as well as package publishing).
2. Allow for `libtest` to be either statically or dynamically linked.
The script assumed it was dynamically linked, but the current Rust
behavior at HEAD is to statically link it.
3. Minor cleanup to use `ffx --machine json` rather than string parsing.
4. Minor cleanup to the docs around the script.
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Rollup of 3 pull requests
Successful merges:
- #124759 (Record impl args in the proof tree in new solver)
- #124809 (borrowck: prepopulate opaque storage more eagerly)
- #124815 (Update books)
r? `@ghost`
`@rustbot` modify labels: rollup
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Make check-cfg docs more user-friendly
This PR improves the `--check-cfg` to make them more user-friendly by:
- explaining the purpose of the feature
- removing the "form" jargon
- making it (bit) less formal and more "friendly"
- making the doc less cluttered
- and by fixing (the width and flags) of the examples
`@rustbot` label +F-check-cfg
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Co-authored-by: Tshepang Mbambo <tshepang@gmail.com>
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Add `rustfmt` cfg to well known cfgs list
This PR adds the `rustfmt` cfg to the well known cfgs list.
Related to https://github.com/rust-lang/rust/issues/124735
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Support Result<T, E> across FFI when niche optimization can be used (v2)
This PR is identical to #122253, which was approved and merged but then removed from master by a force-push due to a [CI bug](https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/ci.20broken.3F).
r? ghost
Original PR description:
---
Allow allow enums like `Result<T, E>` to be used across FFI if the T/E can be niche optimized and the non-niche-optimized type is FFI safe.
Implementation of https://github.com/rust-lang/rfcs/pull/3391
Tracking issue: https://github.com/rust-lang/rust/issues/110503
Additional ABI and codegen tests were added in https://github.com/rust-lang/rust/pull/115372
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- Fixed std support in top-level docs.
- Added `*-apple-darwin` docs.
- Added `i686-apple-darwin` docs.
- Moved `aarch64-apple-ios-sim` to `*-apple-ios` and document all the
iOS targets there.
- Added `*-apple-ios-macabi` docs.
- Add myself (madsmtm) as co-maintainer of most of these targets.
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Stabilize exclusive_range_pattern (v2)
This PR is identical to #124459, which was approved and merged but then removed from master by a force-push due to a [CI bug](https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/ci.20broken.3F).
r? ghost
Original PR description:
---
Stabilization report: https://github.com/rust-lang/rust/issues/37854#issuecomment-1842398130
FCP: https://github.com/rust-lang/rust/issues/37854#issuecomment-1872520294
Stabilization was blocked by a lint that was merged here: #118879
Documentation PR is here: rust-lang/reference#1484
`@rustbot` label +F-exclusive_range_pattern +T-lang
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rustdoc-search: search for references
This feature extends rustdoc with syntax and search index information for searching borrow references. Part of https://github.com/rust-lang/rust/issues/60485
## Preview
- [`&mut`](https://notriddle.com/rustdoc-html-demo-11/reference/std/index.html?search=%26mut)
- [`&Option<T> -> Option<&T>`](https://notriddle.com/rustdoc-html-demo-11/reference/std/index.html?search=%26Option%3CT%3E%20-%3E%20Option%3C%26T%3E)
- [`&mut Option<T> -> Option<&mut T>`](https://notriddle.com/rustdoc-html-demo-11/reference/std/index.html?search=%26mut%20Option%3CT%3E%20-%3E%20Option%3C%26mut%20T%3E)
Updated chapter of the book: https://notriddle.com/rustdoc-html-demo-11/reference/rustdoc/read-documentation/search.html
## Motivation
See https://github.com/rust-lang/rust/pull/119676
## Guide-level explanation
You can't search by lifetimes, but other than that it's the same syntax references normally use.
## Reference-level description
<table>
<thead>
<tr>
<th>Shorthand</th>
<th>Explicit names</th>
</tr>
</thead>
<tbody>
<tr><td colspan="2">Before this PR</td></tr>
<tr>
<td><code>[]</code></td>
<td><code>primitive:slice</code> and/or <code>primitive:array</code></td>
</tr>
<tr>
<td><code>[T]</code></td>
<td><code>primitive:slice<T></code> and/or <code>primitive:array<T></code></td>
</tr>
<tr>
<td><code>!</code></td>
<td><code>primitive:never</code></td>
</tr>
<tr>
<td><code>()</code></td>
<td><code>primitive:unit</code> and/or <code>primitive:tuple</code></td>
</tr>
<tr>
<td><code>(T)</code></td>
<td><code>T</code></td>
</tr>
<tr>
<td><code>(T,)</code></td>
<td><code>primitive:tuple<T></code></td>
</tr>
<tr>
<td><code>(T, U -> V, W)</code></td>
<td><code>fn(T, U) -> (V, W)</code>, Fn, FnMut, and FnOnce</td>
</tr>
<tr><td colspan="2">New additions with this PR</td></tr>
<tr>
<td><code>&</code></td>
<td><code>primitive:reference</td>
</tr>
<tr>
<td><code>&mut</code></td>
<td><code>primitive:reference<keyword:mut></td>
</tr>
<tr>
<td><code>&T</code></td>
<td><code>primitive:reference<T></td>
</tr>
<tr>
<td><code>&mut T</code></td>
<td><code>primitive:reference<keyword:mut, T></td>
</tr>
</tbody>
</table>
### Search query grammar
<code><pre><strong>borrow-ref = AMP *WS [MUT] *WS [arg]</strong>
arg = [type-filter *WS COLON *WS] (path [generics] / slice-like / tuple-like / <strong>borrow-ref</strong>)</pre></code>
```
AMP = "&"
MUT = "mut"
```
## Future direction
As described in https://github.com/rust-lang/rust/pull/118194 and https://github.com/rust-lang/rust/pull/119676
* The remaining type expression grammar (this is another step in the type expression grammar: `ReferenceType` is now supported)
* Search subtyping and traits
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Co-authored-by: Jubilee <46493976+workingjubilee@users.noreply.github.com>
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Both are renamed! Sorry for the initial incorrect commit,
but this should correct it. 😄
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the Hermit team seems to have moved from `hermitcore` to
`hermit-os` on GitHub. this change corrects the old links on its
target page.
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Change `SIGPIPE` ui from `#[unix_sigpipe = "..."]` to `-Zon-broken-pipe=...`
In the stabilization [attempt](https://github.com/rust-lang/rust/pull/120832) of `#[unix_sigpipe = "sig_dfl"]`, a concern was [raised ](https://github.com/rust-lang/rust/pull/120832#issuecomment-2007394609) related to using a language attribute for the feature: Long term, we want `fn lang_start()` to be definable by any crate, not just libstd. Having a special language attribute in that case becomes awkward.
So as a first step towards the next stabilization attempt, this PR changes the `#[unix_sigpipe = "..."]` attribute to a compiler flag `-Zon-broken-pipe=...` to remove that concern, since now the language is not "contaminated" by this feature.
Another point was [also raised](https://github.com/rust-lang/rust/pull/120832#issuecomment-1987023484), namely that the ui should not leak **how** it does things, but rather what the **end effect** is. The new flag uses the proposed naming. This is of course something that can be iterated on further before stabilization.
Tracking issue: https://github.com/rust-lang/rust/issues/97889
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Signed-off-by: Alice Ryhl <aliceryhl@google.com>
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In the stabilization attempt of `#[unix_sigpipe = "sig_dfl"]`, a concern
was raised related to using a language attribute for the feature: Long
term, we want `fn lang_start()` to be definable by any crate, not just
libstd. Having a special language attribute in that case becomes
awkward.
So as a first step towards towards the next stabilization attempt, this
PR changes the `#[unix_sigpipe = "..."]` attribute to a compiler flag
`-Zon-broken-pipe=...` to remove that concern, since now the language
is not "contaminated" by this feature.
Another point was also raised, namely that the ui should not leak
**how** it does things, but rather what the **end effect** is. The new
flag uses the proposed naming. This is of course something that can be
iterated on further before stabilization.
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Arm bare-metal target doc changes
Updates the Arm bare-metal target docs:
* Detailed pages for all the Cortex-M targets, including details about setting target-cpu and target-features to suit specific Arm models
* More detail about the difference between `eabi` and `eabihf`
* Marks the Embedded Devices Working Group Cortex-M Team as the maintainer of the Cortex-M targets
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rustc: document the jobserver
Explicitly document that the jobserver may be used by `rustc`, as well as recommend the `+` indicator for integration of `rustc` into GNU Make.
In particular, show the warning to increase the chances that this document is found when searching for solutions online.
In addition, add a note about the issue with GNU Make 4.3 since it is important that users realize they should do this even if they do not expect parallelism from `rustc`.
Finally, show how to workaround the issue of `$(shell ...)` calls in recursive Make (which e.g. was needed for the Linux kernel).
The GNU Make 4.4 case under `--jobserver-style=pipe` is not added since it got fixed after Rust 1.76.0 already (i.e. `rustc` will not warn if it finds the negative file descriptors).
From: https://github.com/rust-lang/rust/issues/120515
Cc: `@petrochenkov` `@belovdv` `@weihanglo` `@bjorn3`
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v2: To be able to use tab characters for the Make examples, add `<!-- ignore-tidy-{check} -->` support to `tidy`.
v3: Added "Integration with build systems" section to hold the GNU Make one. Added "by clearing the `MAKEFLAGS` variable". Added "aforementioned" so that it is clear we are talking about the warning above.
v4: Added CMake subsection. Added a note that `rustc` may be affected by other flags, e.g. `CARGO_MAKEFLAGS`.
v5: Added that `rustc` will choose the number of jobs if a jobserver is not passed.
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Yes it looks weird, but this is how Arm write it now.
I left ARM64 alone, because it's a Microsoft/Apple term but not an Arm term (they have Armv8-A and Armv9-A architectures, which say that A64 instructions are executed when in the Aarch64 state), and I don't want to get into that, especially for a Tier 1 target.
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The `-Z verbose` option has been renamed to `-Z verbose-internals` in
commit b5d83619 [1] (PR #119129 [2]). This commit updates the remaining
`-Z verbose` to `-Z verbose-internals`.
[1]: https://github.com/rust-lang/rust/commit/b5d8361909e9e30a11227aa773099c293a5dca55
[2]: https://github.com/rust-lang/rust/pull/119129
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Explicitly document that the jobserver may be used by `rustc` and show
the warning to increase the chances that this document is found when
searching for solutions online.
In particular, add a section about the interaction with build systems,
which is intended to contain recommendations on how to integrate `rustc`
with different built systems.
For GNU Make, recommend using the `+` indicator. In addition, add a
note about the issue with GNU Make 4.3 since it is important that users
realize they should do this even if they do not expect parallelism from
`rustc`. Finally, show how to workaround the issue of `$(shell ...)`
calls in recursive Make (which e.g. was needed for the Linux kernel).
The GNU Make 4.4 case under `--jobserver-style=pipe` is not added since
it got fixed after Rust 1.76.0 already (i.e. `rustc` will not warn if
it finds the negative file descriptors).
For CMake, recommend using `JOB_SERVER_AWARE` and show a workaround using
`$(MAKE)` for earlier versions (when using the Makefile generator).
From: https://github.com/rust-lang/rust/issues/120515
Cc: @petrochenkov @belovdv @weihanglo @bjorn3
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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