bors [Wed, 24 Aug 2022 23:51:06 +0000 (23:51 +0000)]
Auto merge of #99946 - tmiasko:elide-storage-makers, r=oli-obk
Elide superfluous storage markers
Follow the existing strategy of omitting the storage markers for temporaries
introduced for internal usage when elaborating derefs and deref projections.
Those temporaries are simple scalars which are used immediately after being
defined and never have their address taken. There is no benefit from storage
markers from either liveness analysis or code generation perspective.
bors [Wed, 24 Aug 2022 19:54:22 +0000 (19:54 +0000)]
Auto merge of #100963 - matthiaskrgr:rollup-pjr0lb3, r=matthiaskrgr
Rollup of 15 pull requests
Successful merges:
- #99993 (linker: Update some outdated comments)
- #100220 (Properly forward `ByRefSized::fold` to the inner iterator)
- #100826 (sugg: take into count the debug formatting)
- #100855 (Extra documentation for new formatting feature)
- #100888 (Coherence negative impls implied bounds)
- #100901 (Make some methods private)
- #100906 (Suggest alternatives when trying to mutate a `HashMap`/`BTreeMap` via indexing)
- #100912 (Diagnose missing includes in run-make tests)
- #100919 (Use par_body_owners for liveness)
- #100922 (Rewrite error index generator to greatly reduce the size of the pages)
- #100926 (Update README.md)
- #100930 (Use `--userns=keep-id` when "docker" is really podman)
- #100938 (rustdoc: remove unused CSS rule)
- #100940 (Do not suggest adding a bound to a opaque type)
- #100945 (Add a missing test case for impl generic mismatch)
Matthias Krüger [Wed, 24 Aug 2022 16:20:19 +0000 (18:20 +0200)]
Rollup merge of #100938 - notriddle:notriddle/fields-table, r=sanxiyn
rustdoc: remove unused CSS rule
According to [blame], this rule was added to support enum struct variants. However, enum struct variants don't use tables in their design any more, so this rule does nothing.
Matthias Krüger [Wed, 24 Aug 2022 16:20:18 +0000 (18:20 +0200)]
Rollup merge of #100930 - cuviper:podman-keep-id, r=jyn514
Use `--userns=keep-id` when "docker" is really podman
Rootless podman creates a separate user namespace, where an inner
`LOCAL_USER_ID` will map to a different subuid range on the host.
The "keep-id" mode maps the current UID directly into the container.
This makes `src/ci/docker/run.sh` work better for testing container
images on systems running podman, where "docker" is just a shim.
Instead of having all error codes in a same page (making the DOM way too big), I split the output into multiple files and generated a list of links (if there is an explanation) to the error codes' explanation into the already existing file.
I also used this opportunity to greatly simplify the code. Instead of needing a `build.rs`, I simply imported the file we want and wrote the macro which generates a function containing everything we need. We just need to call it to get the error codes and their explanation (if any). Also, considering the implementations between markdown and HTML formats differed even further, the `Formatter` trait was becoming too problematic so I removed it too.
You can test it [here](https://rustdoc.crud.net/imperio/rewrite-error-index/error-index.html).
Matthias Krüger [Wed, 24 Aug 2022 16:20:11 +0000 (18:20 +0200)]
Rollup merge of #100888 - spastorino:coherence-negative-impls-implied-bounds, r=lcnr
Coherence negative impls implied bounds
Fixes #93875
This PR is rebased on top of #100789 and it would need to include that one which is already r+ed.
r? ``@nikomatsakis``
cc ``@lcnr`` (which I've talked about https://github.com/rust-lang/rust/commit/3222f420d9d2312efe0735eb48160c7b070adc54, I guess after you finish your reordering of modules and work with OutlivesEnvironmentEnv this commit can just be reverted).
Matthias Krüger [Wed, 24 Aug 2022 16:20:10 +0000 (18:20 +0200)]
Rollup merge of #100855 - IsaacCloos:master, r=joshtriplett
Extra documentation for new formatting feature
Documentation of this feature was added in #90473 and released in Rust 1.58. However, high traffic macros did not receive new examples. Namely `println!()` and `format!()`.
The doc comments included in Rust are super important to the community- especially newcomers. I have met several other newbies like myself who are unaware of this recent (well about 7 months old now) update to the language allowing for convenient intra-string identifiers.
Bringing small examples of this feature to the doc comments of `println!()` and `format!()` would be helpful to everyone learning the language.
[Blog Post Announcing Feature](https://blog.rust-lang.org/2022/01/13/Rust-1.58.0.html)
[Feature PR](https://github.com/rust-lang/rust/pull/90473) - includes several instances of documentation of the feature- minus the macros in question for this PR
*This is my first time contributing to a project this large. Feedback would mean the world to me 😄*
---
*Recreated; I violated the [No-Merge Policy](https://rustc-dev-guide.rust-lang.org/git.html#no-merge-policy)*
bors [Wed, 24 Aug 2022 05:34:43 +0000 (05:34 +0000)]
Auto merge of #100942 - ehuss:update-cargo, r=ehuss
Update cargo
7 commits in 9809f8ff33c2b998919fd0432c626f0f7323697a..6da726708a4406f31f996d813790818dce837161
2022-08-16 22:10:06 +0000 to 2022-08-23 21:39:56 +0000
- Update non-ASCII crate name warning message (rust-lang/cargo#11017)
- Add more tests for aggressive or precise update (rust-lang/cargo#11011)
- Ignore broken but excluded file during traversing (rust-lang/cargo#11008)
- Improve error message for wrong target names (rust-lang/cargo#10999)
- Bump snapbox to 0.3 (rust-lang/cargo#11005)
- remove missed reference to workspace inheritance in unstable.md (rust-lang/cargo#11001)
- Warning when precise or aggressive without -p flag (rust-lang/cargo#10988)
bors [Wed, 24 Aug 2022 01:17:52 +0000 (01:17 +0000)]
Auto merge of #96869 - sunfishcode:main, r=joshtriplett
Optimize `Wtf8Buf::into_string` for the case where it contains UTF-8.
Add a `is_known_utf8` flag to `Wtf8Buf`, which tracks whether the
string is known to contain UTF-8. This is efficiently computed in many
common situations, such as when a `Wtf8Buf` is constructed from a `String`
or `&str`, or with `Wtf8Buf::from_wide` which is already doing UTF-16
decoding and already checking for surrogates.
This makes `OsString::into_string` O(1) rather than O(N) on Windows in
common cases.
And, it eliminates the need to scan through the string for surrogates in
`Args::next` and `Vars::next`, because the strings are already being
translated with `Wtf8Buf::from_wide`.
Many things on Windows construct `OsString`s with `Wtf8Buf::from_wide`,
such as `DirEntry::file_name` and `fs::read_link`, so with this patch,
users of those functions can subsequently call `.into_string()` without
paying for an extra scan through the string for surrogates.
Michael Howell [Wed, 24 Aug 2022 01:15:53 +0000 (18:15 -0700)]
rustdoc: remove unused CSS rule
According to [blame], this rule was added to support enum struct
variants. However, enum struct variants don't use tables in their design
any more, so this rule does nothing.
Josh Stone [Tue, 23 Aug 2022 22:10:36 +0000 (15:10 -0700)]
Use `--userns=keep-id` when "docker" is really podman
Rootless podman creates a separate user namespace, where an inner
`LOCAL_USER_ID` will map to a different subuid range on the host.
The "keep-id" mode maps the current UID directly into the container.
This makes `src/ci/docker/run.sh` work better for testing container
images on systems running podman, where "docker" is just a shim.
bors [Tue, 23 Aug 2022 19:48:55 +0000 (19:48 +0000)]
Auto merge of #99917 - yaahc:error-in-core-move, r=thomcc
Move Error trait into core
This PR moves the error trait from the standard library into a new unstable `error` module within the core library. The goal of this PR is to help unify error reporting across the std and no_std ecosystems, as well as open the door to integrating the error trait into the panic reporting system when reporting panics whose source is an errors (such as via `expect`).
This PR is a rewrite of https://github.com/rust-lang/rust/pull/90328 using new compiler features that have been added to support error in core.
Dylan DPC [Tue, 23 Aug 2022 15:10:04 +0000 (20:40 +0530)]
Rollup merge of #100768 - Facel3ss1:plugin-impl-translation, r=davidtwco
Migrate `rustc_plugin_impl` to `SessionDiagnostic`
Migration of the `rustc_plugin_impl` crate.
~Draft PR because it is blocked on #100694 for `#[fatal(...)]` support~ (this has been merged, and I've changed over to `#[diag(...)]` now too), but I would also like to know if what I did with `LoadPluginError` is okay, because all it does is display the error message from `libloading` ([See conversation on zulip](https://rust-lang.zulipchat.com/#narrow/stream/147480-t-compiler.2Fwg-diagnostics/topic/.23100717.20diagnostic.20translation/near/294327843)). This crate is apparently for a deprecated feature which is used by servo, so I don't know how much this matters anyway.
Dylan DPC [Tue, 23 Aug 2022 15:10:01 +0000 (20:40 +0530)]
Rollup merge of #99249 - cjgillot:no-reparse-fn, r=fee1-dead
Do not re-parse function signatures to suggest generics
This PR uses the existing resolution rib infrastructure to channel the correct span information to suggest generic parameters. This allows to avoid re-parsing a function's source code.
Drive-by cleanup: this removes useless `FnItemRibKind` from late resolution ribs. All the use cases are already covered by `ItemRibKind` and `AssocItemRibKind` which have more precise semantics.
bors [Tue, 23 Aug 2022 08:09:19 +0000 (08:09 +0000)]
Auto merge of #100782 - thomcc:fix-android-sigaddset, r=Mark-Simulacrum
Align android `sigaddset` impl with the reference impl from Bionic
In https://github.com/rust-lang/rust/pull/100737 I noticed we were treating the sigset_t as an array of bytes, while referencing code from android (https://github.com/aosp-mirror/platform_bionic/blob/ad8dcd6023294b646e5a8288c0ed431b0845da49/libc/include/android/legacy_signal_inlines.h) which treats it as an array of unsigned long.
That said, the behavior difference is so subtle here that it's not hard to see why nobody noticed. This fixes the implementation to be equivalent to the one in bionic.
bors [Tue, 23 Aug 2022 05:22:05 +0000 (05:22 +0000)]
Auto merge of #100904 - matthiaskrgr:rollup-z3yzivj, r=matthiaskrgr
Rollup of 9 pull requests
Successful merges:
- #100382 (Make the GATS self outlives error take into GATs in the inputs)
- #100565 (Suggest adding a missing semicolon before an item)
- #100641 (Add the armv4t-none-eabi target to the supported_targets)
- #100789 (Use separate infcx to solve obligations during negative coherence)
- #100832 (Some small bootstrap cleanup)
- #100861 (fix ICE with extra-const-ub-checks)
- #100862 (tidy: remove crossbeam-utils)
- #100887 (Refactor part of codegen_call_terminator)
- #100893 (Remove out-of-context comment in `mem::MaybeUninit` documentation)
Matthias Krüger [Tue, 23 Aug 2022 04:55:30 +0000 (06:55 +0200)]
Rollup merge of #100887 - eholk:codegen_call_terminator-cleanup, r=fee1-dead
Refactor part of codegen_call_terminator
I was reading through this code and found the chain of `if let` and a nested match on the same value that was matched in the `if let` to be kind of hard to follow. This PR cleans it up by flattening the `if let` chain and nested match into a single `match` expression.
Matthias Krüger [Tue, 23 Aug 2022 04:55:27 +0000 (06:55 +0200)]
Rollup merge of #100832 - ehuss:bootstrap-cleanup, r=jyn514
Some small bootstrap cleanup
This is a collection of a few small cleanups. See commits for more details.
* Remove some unused fields from the tool_extended macro.
* Remove rustfmt from publish_toolstate.
* Remove Steve from toolstate failure notices.
* Don't allow rustfmt to fail on dist.
Matthias Krüger [Tue, 23 Aug 2022 04:55:23 +0000 (06:55 +0200)]
Rollup merge of #100382 - jackh726:gat-self-outlives-input, r=compiler-errors
Make the GATS self outlives error take into GATs in the inputs
Before, the reasoning was that outlives should factor in to the outlives error, because that value is produced and inputs aren't. However, this is potentially confusing, and we can just require this for now and relax it later if we need. GATs in where clauses still don't count for the self outlives error, and I've added a test for that.
This now errors:
```rust
trait Input {
type Item<'a>;
//~^ missing required
fn takes_item<'a>(&'a self, item: Self::Item<'a>);
}
```
I've also added a test that this does not:
```rust
trait WhereClause {
type Item<'a>;
fn takes_item<'a>(&'a self) where Self::Item<'a>: ;
}
```
bors [Mon, 22 Aug 2022 20:28:16 +0000 (20:28 +0000)]
Auto merge of #99762 - Nilstrieb:unreachable-prop, r=oli-obk
UnreachableProp: Preserve unreachable branches for multiple targets
Before, UnreachablePropagation removed all unreachable branches. This was a pessimization, as it removed information about reachability that was used later in the optimization pipeline.
For example, this code
```rust
pub enum Two { A, B }
pub fn identity(x: Two) -> Two {
match x {
Two::A => Two::A,
Two::B => Two::B,
}
}
```
basically has `switchInt() -> [0: 0, 1: 1, otherwise: unreachable]` for the match. This allows it to be transformed into a simple `x`. If we remove the unreachable branch, the transformation becomes illegal.
This was the problem keeping `UnreachablePropagation` from being enabled, so we can enable it now.
Something similar already happened in #77800, but it did not show a perf improvement there. Let's try it again anyways!
Fixes #68105, although that issue has been fixed for a long time (see #77680).
bors [Mon, 22 Aug 2022 17:46:57 +0000 (17:46 +0000)]
Auto merge of #100881 - Dylan-DPC:rollup-q9rr658, r=Dylan-DPC
Rollup of 8 pull requests
Successful merges:
- #98200 (Expand potential inner `Or` pattern for THIR)
- #99770 (Make some const prop mir-opt tests `unit-test`s)
- #99957 (Rework Ipv6Addr::is_global to check for global reachability rather than global scope - rebase)
- #100331 (Guarantee `try_reserve` preserves the contents on error)
- #100336 (Fix two const_trait_impl issues)
- #100713 (Convert diagnostics in parser/expr to SessionDiagnostic)
- #100820 (Use pointer `is_aligned*` methods)
- #100872 (Add guarantee that Vec::default() does not alloc)
Dylan DPC [Mon, 22 Aug 2022 15:04:16 +0000 (20:34 +0530)]
Rollup merge of #100872 - JanBeh:PR_vec_default_alloc_doc, r=fee1-dead
Add guarantee that Vec::default() does not alloc
Currently `Vec::new()` is guaranteed to not allocate until elements are pushed onto the `Vec`, but such a guarantee is missing for `Vec`'s implementation of `Default::default`.
This adds such a guarantee for `Vec::default()` to the API reference.
See also [this discussion on URLO](https://users.rust-lang.org/t/guarantee-that-vec-default-does-not-allocate/79903).
Dylan DPC [Mon, 22 Aug 2022 15:04:14 +0000 (20:34 +0530)]
Rollup merge of #100713 - Xiretza:parser-expr-session-diagnostics, r=estebank
Convert diagnostics in parser/expr to SessionDiagnostic
This migrates all the easy cases in `rustc_parse::parser::expr` to `SessionDiagnostic`s, I've left things such as `multipart_suggestion`s out for now in the hopes of a derive API being developed soon.
Dylan DPC [Mon, 22 Aug 2022 15:04:09 +0000 (20:34 +0530)]
Rollup merge of #99770 - Nilstrieb:mir-pass-unit-test, r=oli-obk
Make some const prop mir-opt tests `unit-test`s
Most of these have no or only tiny diffs beyond line numbers being changed (would it make sense to not have line numbers in mir-opt tests?). Some things changed a bit, but I think it should all be fine, not sure though.
Dylan DPC [Mon, 22 Aug 2022 15:04:08 +0000 (20:34 +0530)]
Rollup merge of #98200 - ouz-a:issue-98177, r=oli-obk
Expand potential inner `Or` pattern for THIR
Code assumed there wouldn't be a deeper `Or` pattern inside expanded `PatStack` this fixes it by looking for the `Or` pattern inside expanded `PatStack`.
A more ideal solution would be recursively doing this but I haven't found a good way to do that.
_fixes #97898_
bors [Mon, 22 Aug 2022 14:59:21 +0000 (14:59 +0000)]
Auto merge of #99908 - Nilstrieb:mir-opt-span, r=oli-obk
Show absolute line numbers if span is outside relative span
In the MIR pretty printing, it can sometimes happen that the span of the statement is outside the span of the body (for example through inlining). In this case, don't display a relative span but an absolute span. This will make the mir-opt-tests a little more prone to diffs again, but the impact should be small.