bors [Thu, 4 Nov 2021 09:40:25 +0000 (09:40 +0000)]
Auto merge of #90518 - calebcartwright:rustc-ast-docs, r=wesleywiser
update rustc_ast crate descriptions in documentation
I noticed this the other day and figured I'd suggest a refresh. It seems like a relic from the days of `libsyntax` that got missed as things were split out into separate crates, since the current documentation text references elements that were moved into their own respective crates (e.g. `rustc_parse`)
bors [Thu, 4 Nov 2021 06:54:21 +0000 (06:54 +0000)]
Auto merge of #87467 - inquisitivecrystal:ref-unwind, r=dtolnay
Implement `RefUnwindSafe` for `Rc<T>`
This PR implements `RefUnwindSafe` for `Rc<T>`, where `T: RefUnwindSafe`.
This impl was omitted by an apparent oversight. `Rc<T>` already implements `UnwindSafe`. `Arc<T>` implements both `UnwindSafe` and `RefUnwindSafe`. There is no reason why an `&Rc<T>` is any less unwind safe than a `Rc<T>` or an `&Arc<T>`, so this should be safe to add.
bors [Thu, 4 Nov 2021 03:48:43 +0000 (03:48 +0000)]
Auto merge of #90392 - solid-rs:fix-solid-support, r=Mark-Simulacrum
kmc-solid: Fix SOLID target
This PR is a follow-up for #86191 and necessary to make the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets actually usable.
- Bumps `libc` to 0.2.106, which includes <https://github.com/rust-lang/libc/pull/2227>.
- Applies the change made by #89324 to this target's target-specific code.
bors [Thu, 4 Nov 2021 00:39:21 +0000 (00:39 +0000)]
Auto merge of #90179 - Nilstrieb:lifetime-elision-mismatch-hint, r=estebank
Add beginner friendly lifetime elision hint to E0623
Address #90170
Suggest adding a new lifetime parameter when two elided lifetimes should match up but don't.
Example:
```
error[E0623]: lifetime mismatch
--> $DIR/issue-90170-elision-mismatch.rs:2:35
|
LL | fn foo(slice_a: &mut [u8], slice_b: &mut [u8]) {
| --------- --------- these two types are declared with different lifetimes...
LL | core::mem::swap(&mut slice_a, &mut slice_b);
| ^^^^^^^^^^^^ ...but data from `slice_b` flows into `slice_a` here
|
= note: each elided lifetime in input position becomes a distinct lifetime
help: explicitly declare a lifetime and assign it to both
|
LL | fn foo<'a>(slice_a: &'a mut [u8], slice_b: &'a mut [u8]) {
| ++++ ++ ++
bors [Wed, 3 Nov 2021 21:10:22 +0000 (21:10 +0000)]
Auto merge of #90475 - camelid:docvisitor, r=notriddle
rustdoc: Add `DocVisitor` and use it where possible
`DocFolder` allows transforming the docs, accomplished by making its methods take and return types by-value. However, several of the rustdoc `DocFolder` impls only *visit* the docs; they don't change anything. Passing around types by-value is thus unnecessary, confusing, and potentially inefficient for those impls.
`DocVisitor` is very similar to `DocFolder`, except that its methods take shared references and return nothing (i.e., the unit type). This should both be more efficient and make the code clearer.
There is an additional reason to add `DocVisitor`, too. As part of my cleanup of `external_traits`, I'm planning to add a `fn cache(&mut self) -> &mut Cache` method to `DocFolder` so that `external_traits` can be retrieved explicitly from the `Cache`, rather than implicitly via `Crate.external_traits` (which is an `Rc<RefCell<...>>`). However, some of the `DocFolder` impls that could be turned into `DocVisitor` impls only have a shared reference to the `Cache`, because they are used during rendering. (They have to access the `Cache` via `html::render::Context.shared.cache`, which involves an `Rc`.)
Since `DocVisitor` does not mutate any of the types it's visiting, its equivalent `cache()` method will only need a shared reference to the `Cache`, avoiding the problem described above.
bors [Wed, 3 Nov 2021 18:13:11 +0000 (18:13 +0000)]
Auto merge of #90413 - tmiasko:addr-of-mutable, r=RalfJung,oli-obk
`addr_of!` grants mutable access, maybe?
The exact set of permissions granted when forming a raw reference is
currently undecided https://github.com/rust-lang/rust/issues/56604.
To avoid presupposing any particular outcome, adjust the const
qualification to be compatible with decision where raw reference
constructed from `addr_of!` grants mutable access.
Additionally, to avoid keeping `MaybeMutBorrowedLocals` in sync with
const qualification, remove it. It's no longer used.
Tomasz Miąsko [Sat, 30 Oct 2021 00:00:00 +0000 (00:00 +0000)]
`addr_of!` grants mutable access, maybe?
The exact set of permissions granted when forming a raw reference is
currently undecided https://github.com/rust-lang/rust/issues/56604.
To avoid presupposing any particular outcome, adjust the const
qualification to be compatible with decision where raw reference
constructed from `addr_of!` grants mutable access.
bors [Wed, 3 Nov 2021 08:44:38 +0000 (08:44 +0000)]
Auto merge of #90478 - rusticstuff:apple-a14, r=wesleywiser
Use apple-a14 as target CPU for aarch64-apple-darwin
After updating the minimum required LLVM version to 12 (#90175) we can use `apple-a14` as target CPU, because that CPU is similar in features to the Apple M1 (see [LLVM 13 source](https://github.com/llvm/llvm-project/blob/b8016b626ec7095c7d57ebfffb2135dc5c3077b8/llvm/lib/Target/AArch64/AArch64.td#L1127)). Once the minimum required LLVM version is updated to 13 we can use `apple-m1` here.
bors [Wed, 3 Nov 2021 05:36:30 +0000 (05:36 +0000)]
Auto merge of #90421 - thomcc:friendship-ended-with-ssize_t-now-ptrdiff_t-is-my-best-friend, r=joshtriplett
Replace `std::os::raw::c_ssize_t` with `std::os::raw::c_ptrdiff_t`
The discussions in #88345 brought up that `ssize_t` is not actually the signed index type defined in stddef.h, but instead it's `ptrdiff_t`. It seems pretty clear that the use of `ssize_t` here was a mistake on my part, and that if we're going to bother having a isize-alike for FFI in `std::os::raw`, it should be `ptrdiff_t` and not `ssize_t`.
Anyway, both this and `c_size_t` are dubious in the face of the discussion in https://internals.rust-lang.org/t/pre-rfc-usize-is-not-size-t/15369, and any RFC/project-group/etc that handles those issues there should contend with these types in some manner, but that doesn't mean we shouldn't fix something wrong like this, even if it is unstable.
All that said, `size_t` is *vastly* more common in function signatures than either `ssize_t` or `ptrdiff_t`, so I'm going to update the tracking issue's list of unresolved questions to note that perhaps we only want `c_size_t` — I mostly added the signed version for symmetry, rather than to meet a need. (Given this, I'm also fine with modifying this patch to instead remove `c_ssize_t` without a replacement)
CC `@magicant` (who brought the issue up)
CC `@chorman0773` (who has a significantly firmer grasp on the minutae of the C standard than I do)
r? `@joshtriplett` (original reviewer, active in the discussions around this)
Matthias Krüger [Tue, 2 Nov 2021 22:48:49 +0000 (23:48 +0100)]
Rollup merge of #90500 - xFrednet:00000-update-clippy-deps, r=flip1995
Update Clippy dependencies
Clippy has two outdated dependencies, where one indirect dependency has been flagged by rustsec for dropping a lifetime. See [RUSTSEC-2020-0146](https://rustsec.org/advisories/RUSTSEC-2020-0146). This PR updates these dependencies.
With previous dependency updates, it was tried to prevent duplicates in the `Cargo.lock` file of rust-lang/rust. I've tried to keep this in mind with this update.
* Dependency `semver`
* Used in `src/tools/cargo/Cargo.toml` as version `1.0.3`
* Used in `src/tools/rust-analyzer/crates/project_model/Cargo.toml` as version `1`
* Updated in Clippy from `0.11` to `1.0` (Clippy usually defines the major and minor patch version). The `Cargo.lock` file lists `1.0.3` which is one patch version behind the most recent one but prevents a duplicate with cargo's pinned version.
* Dependency `cargo_metadata`
* Used in several tools as `0.14`
* Used in `src/tools/tidy` and `src/tools/rls` as `0.12`
* Updated in Clippy from `0.12` to `0.14`
All updates to the `Cargo.lock` have been done automatically by `x.py`.
There are still some tools with these outdated dependencies. Clippy didn't require any changes, and it would be likely that the others could also be updated without any problem. Let me know if I should try to update them as well :upside_down_face:.
Keep up the good work, whoever is reading this :crab:
Matthias Krüger [Tue, 2 Nov 2021 22:48:49 +0000 (23:48 +0100)]
Rollup merge of #90500 - xFrednet:00000-update-clippy-deps, r=flip1995
Update Clippy dependencies
Clippy has two outdated dependencies, where one indirect dependency has been flagged by rustsec for dropping a lifetime. See [RUSTSEC-2020-0146](https://rustsec.org/advisories/RUSTSEC-2020-0146). This PR updates these dependencies.
With previous dependency updates, it was tried to prevent duplicates in the `Cargo.lock` file of rust-lang/rust. I've tried to keep this in mind with this update.
* Dependency `semver`
* Used in `src/tools/cargo/Cargo.toml` as version `1.0.3`
* Used in `src/tools/rust-analyzer/crates/project_model/Cargo.toml` as version `1`
* Updated in Clippy from `0.11` to `1.0` (Clippy usually defines the major and minor patch version). The `Cargo.lock` file lists `1.0.3` which is one patch version behind the most recent one but prevents a duplicate with cargo's pinned version.
* Dependency `cargo_metadata`
* Used in several tools as `0.14`
* Used in `src/tools/tidy` and `src/tools/rls` as `0.12`
* Updated in Clippy from `0.12` to `0.14`
All updates to the `Cargo.lock` have been done automatically by `x.py`.
There are still some tools with these outdated dependencies. Clippy didn't require any changes, and it would be likely that the others could also be updated without any problem. Let me know if I should try to update them as well :upside_down_face:.
Keep up the good work, whoever is reading this :crab:
Matthias Krüger [Tue, 2 Nov 2021 22:48:46 +0000 (23:48 +0100)]
Rollup merge of #90354 - xFrednet:00000-lets-deploy-clippy-docs, r=Mark-Simulacrum
Document clippy on nightly-rustc
Adding Clippy's docs to nightly-rustc, based on commit 01cf0bde. This PR only adds `clippy_utils` to the documentation. I've decided to only document one crate for now, as `clippy_lints` etc. contain very specific and undocumented functions which aren't really reusable. I'm guessing that they would mostly clutter up the search results with little benefit.
`./x.py --stage 1 doc src/tools/clippy` if working fine now after the help that ```````@jyn514``````` and ```````@ehuss``````` have provided. A big THANK YOU to them!
Matthias Krüger [Tue, 2 Nov 2021 22:48:46 +0000 (23:48 +0100)]
Rollup merge of #90084 - noncombatant:patch-2, r=steveklabnik
Make printed message match the code comment
I think this code is getting L0, not L1 cache size, if I'm reading the Intel manual right. (I might not be.) Either way, the code comment and the printed message should match, whichever way is right. :)
bors [Tue, 2 Nov 2021 16:16:20 +0000 (16:16 +0000)]
Auto merge of #7918 - samueltardieu:use-config-toml, r=flip1995
Use .cargo/config.toml instead of .cargo/config
`.cargo/config.toml` is the preferred form for the local configuration file. This is emphasized in _The Cargo Book_ with the following note:
> Note: Cargo also reads config files without the `.toml` extension, such as `.cargo/config`. Support for the `.toml` extension was added in version 1.39 and is the preferred form.
Moreover, this helps with toml-aware text editors as they will recognize the file extension.
Samuel Tardieu [Tue, 2 Nov 2021 16:04:39 +0000 (17:04 +0100)]
Use .cargo/config.toml instead of .cargo/config
`.cargo/config.toml` is the preferred form for the local configuration
file. This is emphasized in _The Cargo Book_ with the following note:
> Note: Cargo also reads config files without the `.toml` extension, such
> as `.cargo/config`. Support for the `.toml` extension was added in version
> 1.39 and is the preferred form.
Moreover, this helps with toml-aware text editors as they will recognize
the file extension.
bors [Tue, 2 Nov 2021 12:15:08 +0000 (12:15 +0000)]
Auto merge of #90442 - ChrisDenton:win-tls-dtor, r=alexcrichton
Windows thread-local keyless drop
`#[thread_local]` allows us to maintain a per-thread list of destructors. This also avoids the need to synchronize global data (which is particularly tricky within the TLS callback function).
bors [Tue, 2 Nov 2021 09:57:12 +0000 (09:57 +0000)]
Auto merge of #7726 - dswij:unseparated-literal-suffix, r=flip1995
Unseparated literal suffix
Closes #7658
Since `literal_suffix` style is opinionated, we should disable by default and only enforce if it's stated as so.
changelog: [`unseparated_literal_suffix`] is renamed to `literal_suffix`, adds a new configuration `literal-suffix-style` to enforce a certain style writing literal_suffix. Possible values for `literal-suffix-style`: `"separated"`, `"unseparated"`
bors [Tue, 2 Nov 2021 08:11:57 +0000 (08:11 +0000)]
Auto merge of #90439 - m-ou-se:thread-is-running, r=Mark-Simulacrum
Add JoinHandle::is_running.
This adds:
```rust
impl<T> JoinHandle<T> {
/// Checks if the the associated thread is still running its main function.
///
/// This might return `false` for a brief moment after the thread's main
/// function has returned, but before the thread itself has stopped running.
pub fn is_running(&self) -> bool;
}
```
The usual way to check if a background thread is still running is to set some atomic flag at the end of its main function. We already do that, in the form of dropping an Arc which will reduce the reference counter. So we might as well expose that information.
This is useful in applications with a main loop (e.g. a game, gui, control system, ..) where you spawn some background task, and check every frame/iteration whether the background task is finished to .join() it in that frame/iteration while keeping the program responsive.
bors [Tue, 2 Nov 2021 03:18:41 +0000 (03:18 +0000)]
Auto merge of #90490 - ehuss:update-cargo, r=ehuss
Update cargo
3 commits in 6c1bc24b8b49d4bc965f67d7037906dc199c72b7..94ca096afbf25f670e76e07dca754fcfe27134be
2021-10-24 17:51:41 +0000 to 2021-10-29 14:45:06 +0000
- Chore: prefer `HashMap::from` rather than collecting `Vec` of tuples (rust-lang/cargo#10018)
- Change --scrape-examples flag to -Z rustdoc-scrape-examples (rust-lang/cargo#10017)
- Scrape code examples from examples/ directory for Rustdoc (rust-lang/cargo#9525)
bors [Mon, 1 Nov 2021 21:21:53 +0000 (21:21 +0000)]
Auto merge of #90457 - rusticstuff:use-curl-ca-bundle, r=Mark-Simulacrum
CI: Use ubuntu image to download openssl, curl sources, cacert.pem for x86 dist builds
The dist-x86_64 and dist-i686 docker builds are failing again (see [try build](https://github.com/rust-lang-ci/rust/runs/4060836540?check_suite_focus=true)) because python.org renewed its certificate with a CA cert that is too new for debian:6.
In order to solve this once and for all this PR moves the curl and openssl downloads to a new ubuntu:20.04 "stage-0" docker build and copies the downloaded tarballs over to build them in the "stage-1" debian:6 context. It also downloads the cacert.pem file from the curl website and uses it by pointing the `CURL_CA_BUNDLE` environment variable to it.
Hans Kratz [Mon, 1 Nov 2021 16:03:07 +0000 (17:03 +0100)]
Use apple-a14 as target CPU for aarch64-apple-darwin.
After updating the minimum required LLVM version to 12 we can use
apple-a14 as that is closer in features to the Apple M1 than the A12.
Once the minimum required LLVM version is updated to 13 we can use
apple-m1.
Add `separated_literal_suffix` as an alternative for
`unseparated_literal_suffix`
This commit adds a configuration `literal-suffix-style` to enforce a
specific style for unseparated_literal_suffix. The configuration accepts
two values:
- "separated"
enforce all literals to be written separately (e.g. `123_i32`)
- "unseparated"
enforce all literals to be written as unseparated (e.g. `123i32`)
Not specifying a value means that there is no preference on style and
any style should not be warned.
bors [Mon, 1 Nov 2021 10:53:49 +0000 (10:53 +0000)]
Auto merge of #90462 - pietroalbini:bidi-master, r=nikomatsakis,pietroalbini
[master] Fix CVE-2021-42574
This PR implements new lints to mitigate the impact of [CVE-2021-42574], caused by the presence of bidirectional-override Unicode codepoints in the compiled source code. [See the advisory][advisory] for more information about the vulnerability.
The changes in this PR will be released in tomorrow's nightly release.
Noah Lev [Mon, 1 Nov 2021 04:53:31 +0000 (21:53 -0700)]
Fix `RefCell` `BorrowMut` error in `DocVisitor`
Until `external_traits` is cleaned up (i.e., no longer behind a
`RefCell`), `DocVisitor` will have to `take` `external_traits` -- just
like `DocFolder` -- to prevent `RefCell` runtime errors.
Noah Lev [Mon, 1 Nov 2021 03:18:52 +0000 (20:18 -0700)]
rustdoc: Add `DocVisitor`
`DocFolder` allows transforming the docs, accomplished by making its
methods take and return types by-value. However, several of the rustdoc
`DocFolder` impls only *visit* the docs; they don't change anything.
Passing around types by-value is thus unnecessary, confusing, and
potentially inefficient for those impls.
`DocVisitor` is very similar to `DocFolder`, except that its methods
take shared references and return nothing (i.e., the unit type). This
should both be more efficient and make the code clearer.
There is an additional reason to add `DocVisitor`, too. As part of my
cleanup of `external_traits`, I'm planning to add a `fn cache(&mut self)
-> &mut Cache` method to `DocFolder` so that `external_traits` can be
retrieved explicitly from the `Cache`, rather than implicitly via
`Crate.external_traits` (which is an `Rc<RefCell<...>>`). However, some
of the `DocFolder` impls that could be turned into `DocVisitor` impls
only have a shared reference to the `Cache`, because they are used
during rendering. (They have to access the `Cache` via
`html::render::Context.shared.cache`, which involves an `Rc`.)
Since `DocVisitor` does not mutate any of the types it's visiting, its
equivalent `cache()` method will only need a shared reference to the
`Cache`, avoiding the problem described above.
Noah Lev [Mon, 1 Nov 2021 02:58:28 +0000 (19:58 -0700)]
rustdoc: Remove unnecessary clone in `DocFolder`
Also, contrary to the comment, the clone is not that small, since
`Variant` contains `Item`s, which are quite large when you factor in
both stack- and heap-allocated memory.
Matthias Krüger [Mon, 1 Nov 2021 02:33:09 +0000 (03:33 +0100)]
Rollup merge of #90441 - tmiasko:test-promotion-needs-drop, r=Mark-Simulacrum
Test that promotion follows references when looking for drop
Noticed that this wasn't covered by any of existing tests.
The const checking and const qualification, which currently shares the
implementation with promotion, will likely need a different behaviour
here (see issue #90193).
Matthias Krüger [Mon, 1 Nov 2021 02:33:07 +0000 (03:33 +0100)]
Rollup merge of #90349 - willcrichton:example-analyzer, r=jyn514
Fix rare ICE during typeck in rustdoc scrape_examples
While testing the `--scrape-examples` extension on the [wasmtime](https://github.com/bytecodealliance/wasmtime) repository, I found some additional edge cases. Specifically, when asking to typecheck a body containing a function call, I would sometimes get an ICE if:
* The body doesn't exist
* The function's HIR node didn't have a type
This adds checks for both of those conditions.
(Also this updates a test to check that the sources of a reverse-dependency are correctly generated and linked.)
Matthias Krüger [Mon, 1 Nov 2021 02:33:06 +0000 (03:33 +0100)]
Rollup merge of #90333 - jsha:flashy-searchbar, r=GuillaumeGomez
rustdoc: remove flicker during page load
The search bar has a `:disabled` style that makes it grey, which creates a distracting flicker from grey to white when the page finishes loading. The search bar should stay the same color throughout page load.
A blank white search bar might create an incorrect impression for users with JS turned off. Since they can't use the search functionality, I've hidden the search bar in noscript.css.
Matthias Krüger [Mon, 1 Nov 2021 02:33:04 +0000 (03:33 +0100)]
Rollup merge of #89929 - yuvaldolev:handle-submodule-checkout-more-gracefully, r=Mark-Simulacrum
Handling submodule update failures more gracefully from x.py
Addresses #80498
Handling the case where x.py can't check out the right commit of a submodule, because the submodule has local edits that would be overwritten by the checkout, more gracefully.
The error is printed in detail, with some hints on how to revert the local changes to the submodule.