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They've been deprecated for four years.
This commit includes the following changes.
- It eliminates the `rustc_plugin_impl` crate.
- It changes the language used for lints in
`compiler/rustc_driver_impl/src/lib.rs` and
`compiler/rustc_lint/src/context.rs`. External lints are now called
"loaded" lints, rather than "plugins" to avoid confusion with the old
plugins. This only has a tiny effect on the output of `-W help`.
- E0457 and E0498 are no longer used.
- E0463 is narrowed, now only relating to unfound crates, not plugins.
- The `plugin` feature was moved from "active" to "removed".
- It removes the entire plugins chapter from the unstable book.
- It removes quite a few tests, mostly all of those in
`tests/ui-fulldeps/plugin/`.
Closes #29597.
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To 5b6c1ceaa62ecbd6caef08df39b33b3938e99deb, for this commit:
- Prepare for removal of compiler plugin support. (rust-lang/book#3764)
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Rollup of 4 pull requests
Successful merges:
- #117170 (Add support for i586-unknown-netbsd as target.)
- #117259 (Declare rustc_target's dependency on object/macho)
- #117322 (change default output mode of `BootstrapCommand`)
- #117325 (Small ty::print cleanups)
r? `@ghost`
`@rustbot` modify labels: rollup
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Add support for i586-unknown-netbsd as target.
This restricts instructions to those offered by Pentium, to support e.g. AMD Geode.
There is already an entry for this target in the NetBSD platform support page at
src/doc/rustc/src/platform-support/netbsd.md
...so this should forestall its removal.
Additional fixes are needed for some vendored modules, this is the changes in the rust compiler core itself.
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tvOS simulator support on Apple Silicon for rustc
Closes or is a subtask of #115692.
# Tier 3 Target Policy
At this tier, the Rust project provides no official support for a target, so we place minimal requirements on the introduction of targets.
> * A tier 3 target must have a designated developer or developers (the "target maintainers") on record to be CCed when issues arise regarding the target. (The mechanism to track and CC such developers may evolve over time.)
See [`src/doc/rustc/src/platform-support/apple-tvos.md`](https://github.com/rust-lang/rust/blob/4ab4d48ee59968d8d519ccda5e12c9d200cc092f/src/doc/rustc/src/platform-support/apple-tvos.md)
> * Targets must use naming consistent with any existing targets; for instance, a target for the same CPU or OS as an existing Rust target should use the same name for that CPU or OS. Targets should normally use the same names and naming conventions as used elsewhere in the broader ecosystem beyond Rust (such as in other toolchains), unless they have a very good reason to diverge. Changing the name of a target can be highly disruptive, especially once the target reaches a higher tier, so getting the name right is important even for a tier 3 target.
> * Target names should not introduce undue confusion or ambiguity unless absolutely necessary to maintain ecosystem compatibility. For example, if the name of the target makes people extremely likely to form incorrect beliefs about what it targets, the name should be changed or augmented to disambiguate it.
> * If possible, use only letters, numbers, dashes and underscores for the name. Periods (.) are known to cause issues in Cargo.
This naming scheme matches `$ARCH-$VENDOR-$OS-$ABI` (I think `sim` is the ABI here) which is matches the iOS apple silicon simulator (`aarch64-apple-ios-sim`). [There is some discussion about renaming some apple simulator targets](https://github.com/rust-lang/rust/issues/115692#issuecomment-1712931910) to match the `-sim` suffix but that is outside the scope of this PR.
> * Tier 3 targets may have unusual requirements to build or use, but must not create legal issues or impose onerous legal terms for the Rust project or for Rust developers or users.
>
> * The target must not introduce license incompatibilities.
> * Anything added to the Rust repository must be under the standard Rust license (MIT OR Apache-2.0).
> * The target must not cause the Rust tools or libraries built for any other host (even when supporting cross-compilation to the target) to depend on any new dependency less permissive than the Rust licensing policy. This applies whether the dependency is a Rust crate that would require adding new license exceptions (as specified by the tidy tool in the rust-lang/rust repository), or whether the dependency is a native library or binary. In other words, the introduction of the target must not cause a user installing or running a version of Rust or the Rust tools to be subject to any new license requirements.
> * Compiling, linking, and emitting functional binaries, libraries, or other code for the target (whether hosted on the target itself or cross-compiling from another target) must not depend on proprietary (non-FOSS) libraries. Host tools built for the target itself may depend on the ordinary runtime libraries supplied by the platform and commonly used by other applications built for the target, but those libraries must not be required for code generation for the target; cross-compilation to the target must not require such libraries at all. For instance, rustc built for the target may depend on a common proprietary C runtime library or console output library, but must not depend on a proprietary code generation library or code optimization library. Rust's license permits such combinations, but the Rust project has no interest in maintaining such combinations within the scope of Rust itself, even at tier 3.
> * "onerous" here is an intentionally subjective term. At a minimum, "onerous" legal/licensing terms include but are not limited to: non-disclosure requirements, non-compete requirements, contributor license agreements (CLAs) or equivalent, "non-commercial"/"research-only"/etc terms, requirements conditional on the employer or employment of any particular Rust developers, revocable terms, any requirements that create liability for the Rust project or its developers or users, or any requirements that adversely affect the livelihood or prospects of the Rust project or its developers or users.
This contribution is fully available under the standard Rust license with no additional legal restrictions whatsoever. This PR does not introduce any new dependency less permissive than the Rust license policy.
The new targets do not depend on proprietary libraries.
> * Tier 3 targets should attempt to implement as much of the standard libraries as possible and appropriate (core for most targets, alloc for targets that can support dynamic memory allocation, std for targets with an operating system or equivalent layer of system-provided functionality), but may leave some code unimplemented (either unavailable or stubbed out as appropriate), whether because the target makes it impossible to implement or challenging to implement. The authors of pull requests are not obligated to avoid calling any portions of the standard library on the basis of a tier 3 target not implementing those portions.
This new target implements as much of the standard library as the other tvOS targets do.
> * The target must provide documentation for the Rust community explaining how to build for the target, using cross-compilation if possible. If the target supports running binaries, or running tests (even if they do not pass), the documentation must explain how to run such binaries or tests for the target, using emulation if possible or dedicated hardware if necessary.
I have added the target to the other tvOS targets in [`src/doc/rustc/src/platform-support/apple-tvos.md`](https://github.com/rust-lang/rust/blob/4ab4d48ee59968d8d519ccda5e12c9d200cc092f/src/doc/rustc/src/platform-support/apple-tvos.md)
> * Neither this policy nor any decisions made regarding targets shall create any binding agreement or estoppel by any party. If any member of an approving Rust team serves as one of the maintainers of a target, or has any legal or employment requirement (explicit or implicit) that might affect their decisions regarding a target, they must recuse themselves from any approval decisions regarding the target's tier status, though they may otherwise participate in discussions.
> * This requirement does not prevent part or all of this policy from being cited in an explicit contract or work agreement (e.g. to implement or maintain support for a target). This requirement exists to ensure that a developer or team responsible for reviewing and approving a target does not face any legal threats or obligations that would prevent them from freely exercising their judgment in such approval, even if such judgment involves subjective matters or goes beyond the letter of these requirements.
> * Tier 3 targets must not impose burden on the authors of pull requests, or other developers in the community, to maintain the target. In particular, do not post comments (automated or manual) on a PR that derail or suggest a block on the PR based on a tier 3 target. Do not send automated messages or notifications (via any medium, including via ``@)`` to a PR author or others involved with a PR regarding a tier 3 target, unless they have opted into such messages.
> * Backlinks such as those generated by the issue/PR tracker when linking to an issue or PR are not considered a violation of this policy, within reason. However, such messages (even on a separate repository) must not generate notifications to anyone involved with a PR who has not requested such notifications.
> * Patches adding or updating tier 3 targets must not break any existing tier 2 or tier 1 target, and must not knowingly break another tier 3 target without approval of either the compiler team or the maintainers of the other tier 3 target.
> * In particular, this may come up when working on closely related targets, such as variations of the same architecture with different features. Avoid introducing unconditional uses of features that another variation of the target may not have; use conditional compilation or runtime detection, as appropriate, to let each target run code supported by that target.
I acknowledge these requirements and intend to ensure that they are met.
This target does not touch any existing tier 2 or tier 1 targets and should not break any other targets.
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Cleanup and improve `--check-cfg` implementation
This PR removes some indentation in the code, as well as preventing some bugs/misusages and fix a nit in the doc.
r? ```@petrochenkov``` (maybe)
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feat(docs): add cargo-pgo to PGO documentation 📝
fixes #114995
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Rollup of 7 pull requests
Successful merges:
- #117111 (Remove support for alias `-Z instrument-coverage`)
- #117141 (Require target features to match exactly during inlining)
- #117152 (Fix unwrap suggestion for async fn)
- #117154 (implement C ABI lowering for CSKY)
- #117159 (Work around the fact that `check_mod_type_wf` may spuriously return `ErrorGuaranteed`)
- #117163 (compiletest: Display compilation errors in mir-opt tests)
- #117173 (Make `Iterator` a lang item)
r? `@ghost`
`@rustbot` modify labels: rollup
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These happened during the `generator` -> `coroutine` rename.
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Co-authored-by: Jakub Beránek <berykubik@gmail.com>
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Co-authored-by: Jakub Beránek <berykubik@gmail.com>
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Update books
## rust-lang/book
1 commits in 72187f5cd0beaaa9c6f584156bcd88f921871e83..3dca2fc50b922a8efb94903b9fee8bb42ab48f38
2023-10-19 18:01:47 UTC to 2023-10-19 18:01:47 UTC
- Fix cargo doc links (rust-lang/book#3751)
## rust-embedded/book
1 commits in eac173690b8cc99094e1d88bd49dd61127fbd285..22bca3d0f6e9b9b556689b54ce96f25b46ecd1b3
2023-10-16 22:47:38 UTC to 2023-10-16 22:47:38 UTC
- Improved hardware.md chapter. (rust-embedded/book#361)
## rust-lang/nomicon
1 commits in ddfa4214487686e91b21aa29afb972c08a8f0d5b..1842257814919fa62e81bdecd5e8f95be2839dbb
2023-10-17 15:11:58 UTC to 2023-10-17 15:11:58 UTC
- Fixed `Hole::get` marked as unsafe in `exception-safety.md` (rust-lang/nomicon#427)
## rust-lang/reference
2 commits in 142b2ed77d33f37a9973772bd95e6144ed9dce43..16fd3c06d9e558dae2d52000818274ae70c9e90a
2023-10-14 22:31:04 UTC to 2023-10-11 15:35:55 UTC
- Adjust reference for return-position `impl Trait` in trait and `async fn` in trait (rust-lang/reference#1409)
- Fix temporary drop scope for last expression. (rust-lang/reference#1416)
## rust-lang/rust-by-example
1 commits in 8eb3a01ab74c567b7174784892fb807f2c632d6b..6709beeb7d0fbc5ffc91ac4893a24434123b9bfa
2023-10-20 19:11:21 UTC to 2023-10-20 19:11:21 UTC
- docs: fix a typo (rust-lang/rust-by-example#1752)
## rust-lang/rustc-dev-guide
5 commits in b98af7d661e4744baab81fb8dc7a049e44a4a998..b0ee9ec8fa59a6c7620165e061f4747202377a62
2023-10-22 03:18:44 UTC to 2023-10-11 06:30:26 UTC
- Add WF to glossary (rust-lang/rustc-dev-guide#1810)
- recommend `unpretty=hir` alongside `unpretty=hir-tree` (rust-lang/rustc-dev-guide#1804)
- Start a chapter about the evolving const effect system (rust-lang/rustc-dev-guide#1808)
- Document subtle implied bounds issue in RPITIT inference (rust-lang/rustc-dev-guide#1807)
- [suggested.md] `changelog-seen` -> `change-id` in `shell.nix` (rust-lang/rustc-dev-guide#1806)
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Fixes the second example in the Examples section of what-to-include.md by marking main as a function.
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Implement rustc part of RFC 3127 trim-paths
This PR implements (or at least tries to) [RFC 3127 trim-paths](https://github.com/rust-lang/rust/issues/111540), the rustc part. That is `-Zremap-path-scope` with all of it's components/scopes.
`@rustbot` label: +F-trim-paths
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Add new simpler and more explicit syntax for check-cfg
<details>
<summary>
Old proposition (before the MCP)
</summary>
This PR adds a new simpler and more explicit syntax for check-cfg. It consist of two new form:
- `exhaustive(names, values)`
- `configure(name, "value1", "value2", ... "valueN")`
The preview forms `names(...)` and `values(...)` have implicit meaning that are not strait-forward. In particular `values(foo)`&`values(bar)` and `names(foo, bar)` are not equivalent which has created [some confusions](https://github.com/rust-lang/rust/pull/98080).
Also the `names()` and `values()` form are not clear either and again created some confusions where peoples believed that `values()`&`values(foo)` could be reduced to just `values(foo)`.
To fix that the two new forms are made to be explicit and simpler. See the table of correspondence:
- `names()` -> `exhaustive(names)`
- `values()` -> `exhaustive(values)`
- `names(foo)` -> `exhaustive(names)`&`configure(foo)`
- `values(foo)` -> `configure(foo)`
- `values(feat, "foo", "bar")` -> `configure(feat, "foo", "bar")`
- `values(foo)`&`values(bar)` -> `configure(foo, bar)`
- `names()`&`values()`&`values(my_cfg)` -> `exhaustive(names, values)`&`configure(my_cfg)`
Another benefits of the new syntax is that it allow for further options (like conditional checking for --cfg, currently always on) without syntax change.
The two previous forms are deprecated and will be removed once cargo and beta rustc have the necessary support.
</details>
This PR is the first part of the implementation of [MCP636 - Simplify and improve explicitness of the check-cfg syntax](https://github.com/rust-lang/compiler-team/issues/636).
## New `cfg` form
It introduces the new [`cfg` form](https://github.com/rust-lang/compiler-team/issues/636) and deprecate the other two:
```
rustc --check-cfg 'cfg(name1, ..., nameN, values("value1", "value2", ... "valueN"))'
```
## Default built-in names and values
It also changes the default for the built-in names and values checking.
- Built-in values checking would always be activated as long as a `--check-cfg` argument is present
- Built-in names checking would always be activated as long as a `--check-cfg` argument is present **unless** if any `cfg(any())` arg is passed
~~**Note: depends on https://github.com/rust-lang/rust/pull/111068 but is reviewable (last two commits)!**~~
Resolve https://github.com/rust-lang/compiler-team/issues/636
r? `@petrochenkov`
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Updated libc and doc for Vita target
Doc changes:
- Updated Vita target readme. The recommended approach to build artifacts for the platform now is [cargo-vita](https://crates.io/crates/cargo-vita) which wraps all the convoluted steps previously described in a yaml for `cargo-make`
- Updated maintainer list for Vita target. (`@ZetaNumbers` `@pheki` please agree to be added to the list, `@amg98` please let us know if you're still planning on actively maintaining target support)
Code changes:
- ~Updated libc for rust-lang/libc#3284 and rust-lang/libc#3366~ (Already merged in #116527)
- In dupfd changed the flag same as for esp target, there is no CLOEXEC on Vita
- Enabled `new_pair` since we've implemented `socketpair` in Vita newlib
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Implement sys::args for UEFI
- Uses `EFI_LOADED_IMAGE_PROTOCOL`, which is implemented for all loaded images.
Tested on qemu with OVMF
cc ``@nicholasbishop``
cc ``@dvdhrm``
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- Uses `EFI_LOADED_IMAGE_PROTOCOL`
- verify that cli args are valid UTF-16
- Update Docs
Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com>
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Document `string_deref_patterns` feature
Rendered:
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r=GuillaumeGomez
rustdoc: hide `#[repr(transparent)]` if it isn't part of the public ABI
Fixes #90435.
This hides `#[repr(transparent)]` when the non-1-ZST field the struct is "transparent" over is private.
CC `@RalfJung`
Tentatively nominating it for the release notes, feel free to remove the nomination.
`@rustbot` label needs-fcp relnotes A-rustdoc-ui
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r=workingjubilee
Add the V (vector) extension to the riscv64-linux-android target spec
This feature has been enabled and tested internally in the Android project.
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This add a new form and deprecated the other ones:
- cfg(name1, ..., nameN, values("value1", "value2", ... "valueN"))
- cfg(name1, ..., nameN) or cfg(name1, ..., nameN, values())
- cfg(any())
It also changes the default exhaustiveness to be enable-by-default in
the presence of any --check-cfg arguments.
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Fix mips platform support entries.
The table entries for these MIPS entries were broken because they had the wrong number of columns (from #116503). Additionally, there was a conflict with #115238, which made the same change (but on different lines, so git didn't complain).
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Add unstable book page for the no-jump-tables codegen option
See tracking issue: https://github.com/rust-lang/rust/issues/116592
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This commit adds additional documentation describing the
features/extensions required by the riscv64-linux-android target.
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rustdoc: show crate name beside smaller logo
*Blocked on https://github.com/rust-lang/cargo/pull/12800*
## Summary
In this PR, the crate name and version are always shown in the sidebar, even in subpages, and the lateral navigation is always shown in the sidebar, even in modules.
Clicking the crate name does the same thing clicking the logo always did: take you to the crate root (the crate's home page, at least within Rustdoc).
The Rust logo is also no longer shown by default for non-Rust docs.
### Screenshots
<details><summary>Before</summary>
| | Macro | Module |
|--|-------|--------|
| In crate |  |
| In module[^1] |  | 
[^1]: This PR also includes a bug fix for derive macros not showing up in the lateral navigation part of the sidebar
</details>
#### Whole sidebar screenshots
| | Macro | Module |
|--|-------|--------|
| In crate |  | 
| In module |  | 
#### Different logo configurations
| | Short crate name | Long crate name |
|---------|------------------|-----------------|
| Root | ![short-root] | ![long-root]
| Subpage | ![short-subpage] | ![long-subpage]
[short-root]: https://github.com/rust-lang/rust/assets/1593513/9e2b4fa8-f581-4106-b562-1e0372c13f79
[short-subpage]: https://github.com/rust-lang/rust/assets/1593513/8331cdb8-fa13-4671-a1e2-dcc1cdca7451
[long-root]: https://github.com/rust-lang/rust/assets/1593513/7d377fec-0f1d-4343-9f82-0e35a8f58056
[long-subpage]: https://github.com/rust-lang/rust/assets/1593513/3b3094a4-63c9-477c-8c15-b6075837df30
##### Without a logo
### Preview pages
https://notriddle.com/rustdoc-html-demo-5/sidebar-layout-rocket/rocket/index.html
https://notriddle.com/rustdoc-html-demo-5/sidebar-layout-rocket/rocket_sync_db_pools/index.html
https://notriddle.com/rustdoc-html-demo-5/sidebar-layout-rust-compiler/index.html
https://notriddle.com/rustdoc-html-demo-5/sidebar-layout-rust/std/index.html
https://notriddle.com/rustdoc-html-demo-5/sidebar-layout-rocket/tokio/index.html
## Motivation
This improves visual information density (the construct with the logo and crate name is *shorter* than the logo on its own, because it's not square) and navigation clarity (we can now see what clicking the Rust logo does, specifically).
Compare this with the layout at [Phoenix's Hexdocs] (which is what this proposal is closely based on), the old proposal on [Internals Discourse] (which always says "Rust standard library" in the sidebar, but doesn't do the side-by-side layout).
[Phoenix's Hexdocs]: https://hexdocs.pm/phoenix/1.7.7/overview.html
[Internals Discourse]: https://internals.rust-lang.org/t/poc-of-a-new-design-for-the-generated-rustdoc/11018
## Guide-level explanation
This PR cleans up some of the sidebar navigation.
It makes the logo in the desktop sidebar a bit smaller, and puts the crate name and version next to it (either beside it, or below it, depending on if there's space), making it clearer what clicking on it does: click the crate name to open the crate's home page. It also removes the Rust logo from non-official-Rust crates, again to make the navigation and supply chain clearer (since the crate name has been added, the logo is no longer necessary for navigation).
It adds a bit more clarifying information for lateral navigation. On items that don't add their own sidebar items, it just shows its siblings directly below the crate name and logo, but for other items, it shows "In crate alloc" instead of just "In alloc". It also shows the lateral navigation tools on module pages, making modules consistent with every other item.
## Drawbacks
While this actually takes up less screen real estate than the old layout on desktop, it takes up more HTML. It's also a bit more visually complex.
## Rationale and alternatives
I could do what the Internals POC did and keep the vertically stacked layout all the time, instead of doing a horizontal stack where possible. It would take up more screen real estate, though.
## Prior art
This design is lifted almost verbatim from Hexdocs. It seems to work for them. [`opentelemetry_process_propagator`], for example, has a long application name.
[`opentelemetry_process_propagator`]: https://hexdocs.pm/opentelemetry_process_propagator/OpentelemetryProcessPropagator.html
## Unresolved questions
Maybe we should encourage crate authors to include their own logo more often? It certainly helps give people a better sense of "place." This seems to be blocked on coming up with an API to do it without requiring them to host the file somewhere.
## Future possibilities
Beyond this, plenty of other changes could be made to improve the layout, like
* Fix things so that clicking an item in the sidebar doesn't cause it to scroll back to the top.
* The [Internals demo](https://utherii.github.io/new.html) does this right: clicking an item in the sidebar changes the content area, but the sidebar itself does not change. This is nice, because clicking is cheap and I can skim the opening few paragraphs while browsing.
* The layout of the docs sidebar causes trouble to implement this, because it's different on different pages, but at least fix this on the file browser.
* Come up with a less cluttered way to do disclosure. There's a lot of `[-]` on the page.
* We don't lack ideas to fix this one. We have *too many*.
* Do a better job of separating local navigation (vec::Vec links to vec::IntoIter) and the table of contents (vec::Vec links to vec::Vec::new).
* A possibility: add a Back arrow next to the "In [module]" header?
* Give readers more control of how much rustdoc shows them, and giving doc authors more control of how much it generates. Basically, https://github.com/rust-lang/rust/pull/115660 is great, let's do it too.
But those are mostly orthogonal, not future possibilities unlocked by this change.
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Document `diagnostic_namespace` feature
This adds it to the rust unstable book.
FWIW: I couldn't find a way to serve the book locally (please send help), so I can't check that this renders correctly.
cc `@weiznich`
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Update books
## rust-lang/reference
2 commits in 5262e1c3b43a2c489df8f6717683a44c7a2260fd..142b2ed77d33f37a9973772bd95e6144ed9dce43
2023-10-07 19:41:21 UTC to 2023-09-26 12:26:35 UTC
- replace 'UB on raw ptr deref' with UB on place projection/access (rust-lang/reference#1387)
- docs: Fix links to ECMA standards in `attributes.md` (rust-lang/reference#1408)
## rust-lang/rust-by-example
11 commits in c954202c1e1720cba5628f99543cc01188c7d6fc..8eb3a01ab74c567b7174784892fb807f2c632d6b
2023-09-26 12:38:17 UTC to 2023-09-26 12:29:10 UTC
- fixed a typo in the lifetime.md (rust-lang/rust-by-example#1737)
- Misleading textual statement in HOF (rust-lang/rust-by-example#1731)
- Equalize title from respective file with title in SUMMARY.md (rust-lang/rust-by-example#1738)
- Added explanation for compiling and executing match_args.rs. (rust-lang/rust-by-example#1739)
- Wrapped long lines and put #[doc] in backquotes. (rust-lang/rust-by-example#1740)
- Update read_lines example to flatten iterator (rust-lang/rust-by-example#1742)
- Update while_let.md: address inconsistent use of fn main between 2 co… (rust-lang/rust-by-example#1744)
- [TRIVIAL] Remove confusing `also` (rust-lang/rust-by-example#1746)
- Fix and extend the explanation of outer vs inner attributes. (rust-lang/rust-by-example#1748)
- Fix uncorresponded back quote (rust-lang/rust-by-example#1749)
- Fix format in constants.md (rust-lang/rust-by-example#1741)
## rust-lang/rustc-dev-guide
3 commits in a13b7c28ed705891c681ce5417b3d1cdb12cecd1..b98af7d661e4744baab81fb8dc7a049e44a4a998
2023-10-05 19:48:35 UTC to 2023-09-27 22:57:27 UTC
- update new trait solver docs (rust-lang/rustc-dev-guide#1802)
- update rustc_driver examples (rust-lang/rustc-dev-guide#1803)
- test headers: fix `compile-flags` example (rust-lang/rustc-dev-guide#1800)
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Update docs for mips target tier demotion.
These mips targets were demoted in #113274, but the documentation was not updated. I have also elected to document this in the release notes for 1.72 because I think that should have been included.
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