minicore: use core's `diagnostic::on_unimplemented` messages
Without these attributes, the error message is different. Keeping the diagnostics up-to-date seems related to https://github.com/rust-lang/rust/issues/137531.
The modified test files are reported in https://github.com/rust-lang/rust/issues/143319 as failing for `--target=riscv64gc-unknown-linux-gnu`. Using `minicore` for them makes it easier to troubleshoot this sort of issue.
r? ``@jieyouxu``
setup typos check in CI
This allows to check typos in CI, currently for compiler only (to reduce commit size with fixes). With current setup, exclude list is quite short, so it worth trying?
Also includes commits with actual typo fixes.
MCP: https://github.com/rust-lang/compiler-team/issues/817
typos check currently turned for:
* ./compiler
* ./library
* ./src/bootstrap
* ./src/librustdoc
After merging, PRs which enables checks for other crates (tools) can be implemented too.
Found typos will **not break** other jobs immediately: (tests, building compiler for perf run). Job will be marked as red on completion in ~ 20 secs, so you will not forget to fix it whenever you want, before merging pr.
Check typos: `python x.py test tidy --extra-checks=spellcheck`
Apply typo fixes: `python x.py test tidy --extra-checks=spellcheck:fix` (in case if there only 1 suggestion of each typo)
Current fail in this pr is expected and shows how typo errors emitted. Commit with error will be removed after r+.
miri: improve errors for type validity assertion failures
Miri has pretty nice errors for type validity violations, printing which field in the type the problem occurs at and so on.
However, we don't see these errors when using e.g. `mem::zeroed` as that uses `assert_zero_valid` to bail out before Miri can detect the UB.
Similar to what we did with `@saethlin's` UB checks, I think we should disable such language UB checks in Miri so that we can get better error messages. If we go for this we should probably say this in the intrinsic docs as well so that people don't think they can rely on these intrinsics catching anything.
Furthermore, I slightly changed `MaybeUninit::assume_init` so that the `.value` field does not show up in error messages any more.
`@rust-lang/miri` what do you think?
Rollup of 11 pull requests
Successful merges:
- rust-lang/rust#131923 (Derive `Copy` and `Hash` for `IntErrorKind`)
- rust-lang/rust#138340 (Remove some unsized tuple impls now that we don't support unsizing tuples anymore)
- rust-lang/rust#141219 (Change `{Box,Arc,Rc,Weak}::into_raw` to only work with `A = Global`)
- rust-lang/rust#142212 (bootstrap: validate `rust.codegen-backends` & `target.<triple>.codegen-backends`)
- rust-lang/rust#142237 (Detect more cases of unused_parens around types)
- rust-lang/rust#142964 (Attribute rework: a parser for single attributes without arguments)
- rust-lang/rust#143070 (Rewrite `macro_rules!` parser to not use the MBE engine itself)
- rust-lang/rust#143235 (Assemble const bounds via normal item bounds in old solver too)
- rust-lang/rust#143261 (Feed `explicit_predicates_of` instead of `predicates_of`)
- rust-lang/rust#143276 (loop match: handle opaque patterns)
- rust-lang/rust#143306 (Add `track_caller` attributes to trace origin of Clippy lints)
r? `@ghost`
`@rustbot` modify labels: rollup
try-job: aarch64-apple
try-job: x86_64-msvc-1
try-job: x86_64-gnu
try-job: dist-i586-gnu-i586-i686-musl
try-job: test-various
Change `{Box,Arc,Rc,Weak}::into_raw` to only work with `A = Global`
Also applies to `Vec::into_raw_parts`.
The expectation is that you can round-trip these methods with `from_raw`, but this is only true when using the global allocator. With custom allocators you should instead be using `into_raw_with_allocator` and `from_raw_in`.
The implementation of `Box::leak` is changed to use `Box::into_raw_with_allocator` and explicitly leak the allocator (which was already the existing behavior). This is because, for `leak` to be safe, the allocator must not free its underlying backing store. The `Allocator` trait only guarantees that allocated memory remains valid until the allocator is dropped.
Remove some unsized tuple impls now that we don't support unsizing tuples anymore
Since https://github.com/rust-lang/rust/pull/137728 there is no sound way to create unsized tuples anymore. While we can't remove them from the language (tried here: https://github.com/rust-lang/rust/pull/138093) due to people using `PhantomData<(T, U)>` where `U: ?Sized` (they'd have to use `(PhantomData<T>, PhantomData<U>)` now), we can remove the impls from libcore I believe.
r? libs I guess?
Derive `Copy` and `Hash` for `IntErrorKind`
This PR derives `Copy` and `Hash` for `IntErrorKind` to make it easier to work with. (see #131826)
I think an argument could be made to also derive `PartialOrd` + `Ord` as well given that other error kinds in the std like [`io::ErrorKind`](https://doc.rust-lang.org/src/std/io/error.rs.html#212-428) do this. Granted these seem much less useful for errors.
Fixes https://github.com/rust-lang/rust/issues/131826
Also applies to `Vec::into_raw_parts`.
The expectation is that you can round-trip these methods with
`from_raw`, but this is only true when using the global allocator. With
custom allocators you should instead be using
`into_raw_with_allocator` and `from_raw_in`.
The implementation of `Box::leak` is changed to use
`Box::into_raw_with_allocator` and explicitly leak the allocator (which
was already the existing behavior). This is because, for `leak` to be
safe, the allocator must not free its underlying backing store. The
`Allocator` trait only guarantees that allocated memory remains valid
until the allocator is dropped.
Implement `Random` for tuple
Implement `Random` for tuples of arity 12 or less. Each element is expected to implement `Random`.
I think it's OK to implement this trait for the following types:
- Primitive integer types and `bool`
- Arrays and tuples of the above values
- ~~`NonZero<T>`~~, `Saturating<T>` and `Wrapping<T>`
The necessity of this trait is debated (<https://github.com/rust-lang/rust/issues/130703#issuecomment-2508889577>), but if we decide to keep it in the future when the `random` module is stabilized, I think it would be useful to have this trait implemented for tuples.
Tracking issue: #130703
r? `@joboet`
Workaround for memory unsafety in third party DLLs
Resolvesrust-lang/rust#143078
Note that we can't make any guarantees if third parties intercept OS functions and don't implement them according to the documentation. However, I think it's practical to attempt mitigations when issues are encountered in the wild and the mitigation itself isn't too invasive.
Add SIMD funnel shift and round-to-even intrinsics
This PR adds 3 new SIMD intrinsics
- `simd_funnel_shl` - funnel shift left
- `simd_funnel_shr` - funnel shift right
- `simd_round_ties_even` (vector version of `round_ties_even_fN`)
TODO (future PR): implement `simd_fsh{l,r}` in miri, cg_gcc and cg_clif (it is surprisingly hard to implement without branches, the common tricks that rotate uses doesn't work because we have 2 elements now. e.g, the `-n&31` trick used by cg_gcc to implement rotate doesn't work with this because then `fshl(a, b, 0)` will be `a | b`)
[#t-compiler > More SIMD intrinsics](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/More.20SIMD.20intrinsics/with/522130286)
`@rustbot` label T-compiler T-libs A-intrinsics F-core_intrinsics
r? `@workingjubilee`
BTreeSet: remove duplicated code by reusing `from_sorted_iter`
The method `BTreeSet::from_sorted_iter` was introduced in 49ccb7519f, but it was not consistently used throughout the codebase. As a result, some code redundantly reimplemented its logic. This commit fixes the problem.
update internal `send_signal` comment
the vxwork did not have the old comment updated in rust-lang/rust#141990 so update here;
signaling -> sending signals to because the latter reads better to me.
Do not include NUL-terminator in computed length
This PR contains just the first commit of rust-lang/rust#142579 which changes it so that the string length stored in the `Location` is the length of the `&str` rather than the length of the `&CStr`. Since most users will want the `&str` length, it seems better to optimize for that use-case.
There should be no visible changes in the behavior or API.
std::net: adding `unix_socket_exclbind` feature for solaris/illumos.
allows to have a tigher control over the binding exclusivness of the socket.
ACP: https://github.com/rust-lang/libs-team/issues/366
Insert checks for enum discriminants when debug assertions are enabled
Similar to the existing null-pointer and alignment checks, this checks for valid enum discriminants on creation of enums through unsafe transmutes. Essentially this sanitizes patterns like the following:
```rust
let val: MyEnum = unsafe { std::mem::transmute<u32, MyEnum>(42) };
```
An extension of this check will be done in a follow-up that explicitly sanitizes for extern enum values that come into Rust from e.g. C/C++.
This check is similar to Miri's capabilities of checking for valid construction of enum values.
This PR is inspired by saethlin@'s PR
https://github.com/rust-lang/rust/pull/104862. Thank you so much for keeping this code up and the detailed comments!
I also pair-programmed large parts of this together with vabr-g@.
r? `@saethlin`
The method `BTreeSet::from_sorted_iter` was introduced in 49ccb7519f,
but it was not consistently used throughout the codebase. As a result, some code redundantly reimplemented its logic.
This commit fixes the problem.
