Add back Send and Sync impls on ChunksMut iterators
Fixes https://github.com/rust-lang/rust/issues/100014
These were accidentally removed in #94247 because the representation was changed from `&mut [T]` to `*mut T`, which has `!Send + !Sync`.
Rollup of 5 pull requests
Successful merges:
- #99371 (Remove synchronization from Windows `hashmap_random_keys`)
- #99614 (do not claim that transmute is like memcpy)
- #99738 (rustdoc: avoid inlining modules with duplicate names)
- #99800 (Fix futex module imports on wasm+atomics)
- #100079 (Replace `* -> vec` with `-> vec` in docs)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Fix futex module imports on wasm+atomics
The futex modules were rearranged a bit in #98707, which meant that wasm+atomics would no longer compile on nightly. I don’t believe any other targets were impacted by this.
do not claim that transmute is like memcpy
Saying transmute is like memcpy is not a well-formed statement, since memcpy is by-ref whereas transmute is by-val. The by-val nature of transmute inherently means that padding is lost along the way. (This is not specific to transmute, this is how all by-value operations work.) So adjust the docs to clarify this aspect.
Cc `@workingjubilee`
Remove synchronization from Windows `hashmap_random_keys`
Unfortunately using synchronization when generating hashmap keys can prevent it being used in `DllMain`.
~~Fixes #99341~~
Rollup of 6 pull requests
Successful merges:
- #99933 (parallelize HTML checking tool)
- #99958 (Improve position named arguments lint underline and formatting names)
- #100008 (Update all pre-cloned submodules on startup)
- #100049 (⬆️ rust-analyzer)
- #100070 (Clarify Cargo.toml comments)
- #100074 (rustc-docs: Be less specific about the representation of `+bundle`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
remove `commit_unconditionally`
`commit_unconditionally` is a noop unless we somehow inspect the current state of our snapshot. The only thing which does that is the leak check which was only used in one place where `commit_if_ok` is probably at least as, or even more, correct.
r? rust-lang/types
Improve position named arguments lint underline and formatting names
For named arguments used as implicit position arguments, underline both
the opening curly brace and either:
* if there is formatting, the next character (which will either be the
closing curl brace or the `:` denoting the start of formatting args)
* if there is no formatting, the entire arg span (important if there is
whitespace like `{ }`)
This should make it more obvious where the named argument should be.
Additionally, in the lint message, emit the formatting argument names
without a dollar sign to avoid potentially confusion.
Fixes#99907
parallelize HTML checking tool
there's a lot of IO, so timings on my laptop are far from stable, but it seems to be considerably faster.
this step often appears to take 5+ minutes in CI, so hopefully this offers a speedup
move [`assertions_on_result_states`] to restriction
"Backports" the first commit of https://github.com/rust-lang/rust-clippy/pull/9273, so that the lint doesn't go into beta as a warn-by-default lint.
The other changes in the linked PR can ride the train as usual.
r? ``@xFrednet`` (only Clippy changes, so we don't need to bother compiler people)
---
For Clippy:
changelog: none
RISC-V ASM test: relax label name constraint.
The test is currently [broken at LLVM Head](https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/12425#01825d5b-c3d1-4fdc-a98d-5956b246aee2), likely since 260a641068:
```plain
/var/lib/buildkite-agent/builds/rust-llvm-integrate/llvm-project/rust-llvm-integrate-prototype/src/test/assembly/asm/riscv-types.rs:59:11: error: CHECK: expected string not found in input
--
| // CHECK: lb t0, %pcrel_lo(.Lpcrel_hi0)(t0)
| ^
| /var/lib/buildkite-agent/builds/rust-llvm-integrate/llvm-project/rust-llvm-integrate-prototype/build/x86_64-unknown-linux-gnu/test/assembly/asm/riscv-types.riscv64/riscv-types.s:24:36: note: scanning from here
| auipc t0, %pcrel_hi(extern_static)
| ^
| /var/lib/buildkite-agent/builds/rust-llvm-integrate/llvm-project/rust-llvm-integrate-prototype/build/x86_64-unknown-linux-gnu/test/assembly/asm/riscv-types.riscv64/riscv-types.s:25:2: note: possible intended match here
| lb t0, %pcrel_lo(.Lpcrel_hi18)(t0)
| ^
```
As far as I can tell, the exact index in the label probably doesn't matter for the test, especially if LLVM can change it to ~arbitrary values, though I'm not an ASM or RISC-V expert.
This [fixes the test](https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/12427).
Properly reject the `may_unwind` option in `global_asm!`
This was accidentally accepted even though it had no effect in
`global_asm!`. The option only makes sense for `asm!` which runs within
a function.
Remove Clean trait for ast::Attribute and improve Attributes::from_ast
I prefer to keep this commit on its own for this PR because I'm changing a bit more things than expected originally: I split `Attributes::from_ast` into two because there is only one location making use of its second parameter.
Follow-up of https://github.com/rust-lang/rust/pull/99638.
r? `@notriddle`
Always include a position span in `rustc_parse_format::Argument`
Moves the spans from the `Position` enum to always be included in the `Argument` struct. Doesn't make any changes to use it in rustc, but it will be useful for some upcoming Clippy lints
make `PlaceholderConst` not store the type of the const
Currently the `Placeholder` variant on `ConstKind` is 28 bytes when with this PR its 8 bytes, i am not sure this is really useful at all rn since `Unevaluated` and `Value` variants are huge still but eventually it should be possible to get both down to 16 bytes 🤔. Mostly opening this to see if this change has any perf impact when done before it can make `ConstKind`/`ConstS` smaller
Add validation to const fn CStr creation
Improves upon the existing validation that only worked when building the stdlib from source. `CStr::from_bytes_with_nul_unchecked` now utilizes `const_eval_select` to validate the safety requirements of the function when used as `const FOO: &CStr = CStr::from_bytes_with_nul_unchecked(b"Foobar\0");`.
This can help catch erroneous code written by accident and, assuming a new enough `rustc` in use, remove the need for boilerplate safety comments for this function in `const` contexts.
~~I think this might need a UI test, but I don't know where to put it. If this is a worth change, a perf run would be nice to make sure the `O(n)` validation isn't too bad. I didn't notice a difference building the stdlib tests locally.~~
For named arguments used as implicit position arguments, underline both
the opening curly brace and either:
* if there is formatting, the next character (which will either be the
closing curl brace or the `:` denoting the start of formatting args)
* if there is no formatting, the entire arg span (important if there is
whitespace like `{ }`)
This should make it more obvious where the named argument should be.
Additionally, in the lint message, emit the formatting argument names
without a dollar sign to avoid potentially confusion.
Fixes#99907
Rollup of 8 pull requests
Successful merges:
- #99156 (`codegen_fulfill_obligation` expect erased regions)
- #99293 (only run --all-targets in stage0 for Std)
- #99779 (Fix item info pos and height)
- #99994 (Remove `guess_head_span`)
- #100011 (Use Parser's `restrictions` instead of `let_expr_allowed`)
- #100017 (kmc-solid: Update `Socket::connect_timeout` to be in line with #78802)
- #100037 (Update rustc man page to match `rustc --help`)
- #100042 (Update books)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Update books
## reference
2 commits in a92be0fef439b3d8e0468d82cb24812d303520a0..f3d3953bf3b158d596c96d55ce5366f9f3f972e9
2022-07-21 19:01:23 -0700 to 2022-08-01 17:17:37 -0700
- Add `let_chains` references (rust-lang/reference#1179)
- Remove outdated warning (rust-lang/reference#1243)
## rust-by-example
18 commits in 3155db49b0d57cd82c65456ac210b69ecec5ccb1..ee342dc91e1ba1bb1e1f1318f84bbe3bfac04798
2022-07-05 20:35:53 -0300 to 2022-07-27 11:06:36 -0300
- Closure inferred twice (rust-lang/rust-by-example#1588)
- fix a syntax bug in example assembly (rust-lang/rust-by-example#1511)
- Minor grammar change in src/std/rc.md paragraph 2 (rust-lang/rust-by-example#1586)
- Fix typo in asm.md (rust-lang/rust-by-example#1585)
- Fix incorrect padding in fixed-width print (rust-lang/rust-by-example#1584)
- Update print.md (rust-lang/rust-by-example#1582)
- add-chapter-on-defaults (rust-lang/rust-by-example#1580)
- Fix typo (rust-lang/rust-by-example#1579)
- fix a compile error (rust-lang/rust-by-example#1578)
- Suggest using mod.rs pattern to share test code (rust-lang/rust-by-example#1577)
- fix a compile error in iter_any.md (rust-lang/rust-by-example#1576)
- Mention attribute like macros in attributes.md (rust-lang/rust-by-example#1574)
- Update exercise to be clearer (rust-lang/rust-by-example#1573)
- fixes link for turbofish in testcase_mapreduce.md (rust-lang/rust-by-example#1572)
- Fix inconsistency between comment and code in hello/print.md (rust-lang/rust-by-example#1571)
- Fixes a typo in print.md (rust-lang/rust-by-example#1570)
- into_iter-moves-elements (rust-lang/rust-by-example#1569)
- Fix a typo in print.md (rust-lang/rust-by-example#1568)
## rustc-dev-guide
16 commits in d5201cddace979b299ec1bf9fd8997338151aa9d..04f3cf0bb2f5a6ee2bfc4b1a6a6cd8c11d1c5531
2022-07-21 04:48:49 +0200 to 2022-07-31 07:46:57 +0200
- address review comment
- accept review suggestion
- try address review comments
- summary of chapter
- Update src/building/compiler-documenting.md
- revamp doc-build chapter
- minor fixes
- Prefer relative links
- Fix the link to clippy docs
- Fix the link to `ResolverAstLowering`
- Fix the link to `ProcMacro` trait
- Fix the link to `Lazy<T>`
- Add instructions to fix build errors in std after adding a new target
- Document how to build a cross-compiler
- Add documentation about Microsoft provided debuggers and CodeView/PDB… (rust-lang/rustc-dev-guide#1406)
- rust-analyzer is now a subtree
## embedded-book
2 commits in 766979590da8100998f0d662499d4a901d8d1640..befe6840874311635c417cf731377f07234ee373
2022-07-04 09:13:58 +0000 to 2022-07-25 07:51:14 +0000
- Updated instructions for running first Hardware example (rust-embedded/book#323)
- Improved ligability for hardware.md (rust-embedded/book#324)
Update rustc man page to match `rustc --help`
This brings the `--crate-type`, `--emit`, and `--print` options' allowed arguments into sync with that printed by `rustc --help`.
c.f. the `opt::multi_s` calls for `"crate-type"`, `"emit"`, and `"print"` here: https://github.com/rust-lang/rust/blob/master/compiler/rustc_session/src/config.rs
kmc-solid: Update `Socket::connect_timeout` to be in line with #78802
Fixes the build failure of the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets after #78802.
```
error[E0308]: mismatched types
--> library\std\src\sys\solid\net.rs:234:45
|
234 | cvt(netc::connect(self.0.raw(), addrp, len))
| ------------- ^^^^^ expected *-ptr, found union `SocketAddrCRepr`
| |
| arguments to this function are incorrect
|
= note: expected raw pointer `*const sockets::sockaddr`
found union `SocketAddrCRepr`
note: function defined here
--> library\std\src\sys\solid\abi\sockets.rs:173:12
|
173 | pub fn connect(s: c_int, name: *const sockaddr, namelen: socklen_t) -> c_int;
| ^^^^^^^
```
Use Parser's `restrictions` instead of `let_expr_allowed`
This also means that the `ALLOW_LET` flag is reset properly for subexpressions, so we can properly deny things like `a && (b && let c = d)`. Also the parser is a tiny bit smaller now.
It doesn't reject _all_ bad `let` expr usages, just a bit more.
cc `@c410-f3r`
