…ehavior

Basically, passing the empty string will actually remove the extension
instead of setting it to the empty string. This might change what is
considered to be an extension. Additionally, passing an extension that
contains dots will make the path only consider the last part of it to be
the new extension.

Closes rust-lang#106299

- Avoid `/checkout/src/ci/run.sh: line 187: [: =: unary operator expected`: https://github.com/rust-lang/rust/actions/runs/3809902408/jobs/6481611301#step:26:1701
- Avoid running `x check` in the tidy test, to get faster feedback. It's
  already run on the normal `mingw-check` job.

Context is no longer Sync so this doesn't work.

    error[E0277]: `*mut ()` cannot be shared between threads safely
      --> library/core/tests/task.rs:24:21
       |
    24 |     static CONTEXT: Context<'static> = Context::from_waker(&WAKER);
       |                     ^^^^^^^^^^^^^^^^ `*mut ()` cannot be shared between threads safely
       |
       = help: within `Context<'static>`, the trait `Sync` is not implemented for `*mut ()`
       = note: required because it appears within the type `PhantomData<*mut ()>`
       = note: required because it appears within the type `Context<'static>`
       = note: shared static variables must have a type that implements `Sync`

HIR debug output is currently very verbose, especially when used with
the alternate (`#`) flag. This commit reduces the amount of noisy
newlines by forcing a few small key types to stay on one line, which
makes the output easier to read and scroll by.

```
$ rustc +after hello_world.rs -Zunpretty=hir-tree | wc -l
582
$ rustc +before hello_world.rs -Zunpretty=hir-tree | wc -l
932
```

Add PhantomData marker to Context to make Context !Send and !Sync

Adds `PhantomData<*mut ()>` to `Context` in order to allow for future `!Send` or `!Sync` additions to `Context`'s fields. This would allow for things like future single threaded async executor optimizations, or (re)adding `LocalWaker`, etc.

Closes rust-lang#66481.

Per rust-lang#66481 (comment), this is a breaking change that needs a Crater run as the next step.

(So far have tested the change locally with `cargotest` on WSL)

…-ou-se

Add notes and examples about non-intuitive `PathBuf::set_extension` behavior

Basically, passing the empty string will actually remove the extension instead of setting it to the empty string. This might change what is considered to be an extension. Additionally, passing an extension that contains dots will make the path only consider the last part of it to be the new extension.

…gillot

Reduce HIR debug output

HIR debug output is currently very verbose, especially when used with the alternate (`#`) flag. This commit reduces the amount of noisy newlines by forcing a few small key types to stay on one line, which makes the output easier to read and scroll by.

```
$ rustc +after hello_world.rs -Zunpretty=hir-tree | wc -l
582
$ rustc +before hello_world.rs -Zunpretty=hir-tree | wc -l
932
```

…dead

Cleanup `mingw-tidy` docker job

Fixes a couple small regressions from rust-lang#106048 and rust-lang#105714.

- Avoid `/checkout/src/ci/run.sh: line 187: [: =: unary operator expected`: https://github.com/rust-lang/rust/actions/runs/3809902408/jobs/6481611301#step:26:1701
- Avoid running `x check` in the tidy test, to get faster feedback. It's already run on the normal `mingw-check` job.

r? `@fee1-dead`

…GuillaumeGomez

Rustdoc-Json: Report discriminant on all kinds of enum variant.

Closes rust-lang#106299

Probably easier to review one commit at a time.

r? `@GuillaumeGomez`

…edef-type-mismatch, r=notriddle

Fix rustdoc ICE on bad typedef with mismatching types

Fixes rust-lang#106226.
Fixes rust-lang#105742.
Fixes rust-lang#105737.
Fixes rust-lang#105334.
Fixes rust-lang#96287.

In this case, it's ok to replace the panic with `rustc_error::raise` because the compiler provided us with a `Error`.

r? `@notriddle`

Update books

## rust-lang/book

3 commits in a60f4316ec923a5ac2ed6a2eba6960edb832d855..2bd5d42c9956369132228da6409f0e68da56c51a
2022-12-22 21:37:10 UTC to 2022-12-22 21:36:14 UTC

- fix macos installation problem (rust-lang/book#3469)
- Update -guessing-game-tutorial incorrect output (rust-lang/book#3462)
- FIX: IT repo updated (rust-lang/book#3454)

## rust-lang/nomicon

1 commits in dd37e21ccee43918ed18a71581bb2af537ffe4fc..8ca261268068d80c0969260fff15199bad87b587
2022-12-30 16:32:09 UTC to 2022-12-30 16:32:09 UTC

- Discourage the use of transmute to construct invalid values (rust-lang/nomicon#388)

## rust-lang/rust-by-example

6 commits in 995df09b65c582eb6290ab7ea5d9485983eb4c37..8888f9428fe9a48f31de6bd2cef9b9bf80791edc
2023-01-01 12:53:50 UTC to 2022-12-21 10:18:31 UTC

- types/alias: use io::{Result,Error} instead of Io{Result,Error} (rust-lang/rust-by-example#1660)
- Fix sample code mismatching its comments (rust-lang/rust-by-example#1659)
- fix: add missing space (rust-lang/rust-by-example#1658)
- diverging: fix issues with example code (rust-lang/rust-by-example#1631)
- Update enum.md (rust-lang/rust-by-example#1645)
- Clean up Chapter 2 (Primitives) (rust-lang/rust-by-example#1651)

## rust-lang/rustc-dev-guide

5 commits in 8b42eb5f57d3d8ed2257a22d0e850d9db52afed3..b3e2a6e6c8a3aae5b5d950c63046f23bae07096d
2023-01-01 05:20:47 UTC to 2022-12-25 12:11:21 UTC

- Add help for when you update a submodule by accident (rust-lang/rustc-dev-guide#1537)
- Simplify "how to build and run" section (rust-lang/rustc-dev-guide#1528)
- Replace `$TARGET` with `host` (rust-lang/rustc-dev-guide#1514)
- Add more rebasing help (rust-lang/rustc-dev-guide#1536)
- Fix rustc_borrowck crate name typo (rust-lang/rustc-dev-guide#1535)

…rrors

Document some of the AST nodes

Someone was confused about some of this on Zulip, added some docs

We probably should make sure every last field/variant in the AST/HIR is documented at some point

`@bors` rollup