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Add implict unsafety inlay hints for extern blocks
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rustbook: update to use new mdbook-trpl package from The Book
Updates to the latest merge from `rust-lang/book` and simplifies the dependency chain there. There are now three preprocessors, but only one package, so everything is a lot nicer to deal with from the consuming POV (i.e. here).
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Extend Miri to correctly pass mutable pointers through FFI
Based off of https://github.com/rust-lang/rust/pull/129684, this PR further extends Miri to execute native calls that make use of pointers to *mutable* memory.
We adapt Miri's bookkeeping of internal state upon any FFI call that gives external code permission to mutate memory.
Native code may now possibly write and therefore initialize and change the pointer provenance of bytes it has access to: Such memory is assumed to be *initialized* afterwards and bytes are given *arbitrary (wildcard) provenance*. This enables programs that correctly use mutating FFI calls to run Miri without errors, at the cost of possibly missing Undefined Behaviour caused by incorrect usage of mutating FFI.
> <details>
>
> <summary> Simple example </summary>
>
> ```rust
> extern "C" {
> fn init_int(ptr: *mut i32);
> }
>
> fn main() {
> let mut x = std::mem::MaybeUninit::<i32>::uninit();
> let x = unsafe {
> init_int(x.as_mut_ptr());
> x.assume_init()
> };
>
> println!("C initialized my memory to: {x}");
> }
> ```
> ```c
> void init_int(int *ptr) {
> *ptr = 42;
> }
> ```
> should now show `C initialized my memory to: 42`.
>
> </details>
r? ``@RalfJung``
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rust_for_linux: -Zreg-struct-return commandline flag for X86 (#116973)
Command line flag `-Zreg-struct-return` for X86 (32-bit) for rust-for-linux.
This flag enables the same behavior as the `abi_return_struct_as_int` target spec key.
- Tracking issue: https://github.com/rust-lang/rust/issues/116973
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Fix weak memory emulation to avoid generating behaviors that are forbidden under C++ 20
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fix: Fix parser getting stuck for bad asm expressions
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Co-authored-by: famfo <famfo@famfo.xyz>
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Signed-off-by: Jens Reidel <adrian@travitia.xyz>
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MCP: https://github.com/rust-lang/compiler-team/issues/803
Signed-off-by: Jens Reidel <adrian@travitia.xyz>
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CI: rfl: move job forward to Linux v6.13-rc1
Linux v6.13-rc1 contains commit 28e848386b92 ("rust: block: fix formatting of `kernel::block::mq::request` module"), which in turn contains commit c95bbb59a9b2 ("rust: enable arbitrary_self_types and remove `Receiver`"), which is why we had a hash rather than a tag.
r? ```@Kobzol``` ```@lqd```
try-job: x86_64-rust-for-linux
```@rustbot``` label A-rust-for-linux
```@bors``` try
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Replace black with ruff in `tidy`
`ruff` can both lint and format Python code (in fact, it should be a mostly drop-in replacement for `black` in terms of formatting), so it's not needed to use `black` anymore. This PR removes `black` and replaces it with `ruff`, to get rid of one Python dependency, and also to make Python formatting faster (although that's a small thing).
If we decide to merge this, we'll need to "reformat the world" - `ruff` is not perfectly compatible with `black`, and it also looks like `black` was actually ignoring some files before. I tried it locally (`./x test tidy --extra-checks=py:fmt --bless`) and it also reformatted some code in subtrees (e.g. `clippy` or `rustc_codegen_gcc`) - I'm not sure how to handle that.
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CI: use free runners for i686-gnu jobs
try-job: i686-gnu-1
try-job: i686-gnu-2
try-job: i686-gnu-nopt-1
try-job: i686-gnu-nopt-2
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Co-authored-by: zachs18 <8355914+zachs18@users.noreply.github.com>
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Co-authored-by: Ralf Jung <post@ralfj.de>
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fix: Fix parsing of dyn T in generic arg on 2015 edition
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Migrate `sort_items` Assist to Use `SyntaxFactory`
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Migrate `introduce_named_generic` Assist to Use `SyntaxFactory`
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fix: Parse lifetime bounds in lifetime param into TypeBoundList
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This mainly aids in error recovery but also makes it a bit easier to handle lifetime resolution.
While doing so it also came apparent that we were not actually lowering lifetime outlives relationships within lifetime parameter declaration bounds, so this fixes that.
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fix: Panic when displaying generic params with defaults
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fix: Fix parsing of integer/keyword name refs in various places
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Signed-off-by: Tarek <tareknaser360@gmail.com>
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skip `setup::Hook` on non-git sources
Running `setup::Hook` (with `x setup`) leads tarball sources to panic and this PR resolves that problem by skipping `Hook` step on non-git sources.
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Improve bootstrap job objects
This attempts to fix a few comments on bootstrap job objects.
I also fixed an issue where if duplicating the job object handle into the python process failed, it would close the job object. This would then result in the job object closing all attached processes, which at that point includes the current process. The fix is to simply never close the job object handle at any point after the current process is assigned to it.
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Fix "std" support status of some tier 3 targets
https://github.com/rust-lang/rust/pull/127265 marked targets with empty "std" support status as no-std targets in target-spec metadata:
> * Where a targets 'std' or 'host tools' support is listed as '?' in the rust docs, these are left as 'None' with this PR. The corresponding changes in cargo will only reject an attempt to build std if the 'std' field is 'Some(false)'. In the case it is 'None', cargo will continue trying to build
However, this is not accurate because "std" support status has a marker indicating that it is a no-std target. (empty status is just invalid.)
https://doc.rust-lang.org/nightly/rustc/platform-support.html#tier-3
> The `std` column in the table below has the following meanings:
>
> * ✓ indicates the full standard library is available.
> * \* indicates the target only supports [`no_std`] development.
> * ? indicates the standard library support is unknown or a work-in-progress.
>
> [`no_std`]: https://rust-embedded.github.io/book/intro/no-std.html
This PR fixes the status of targets whose "std" support status is currently set to empty and update target-spec metadata.
The new status is set based on the following criteria:
- Set to ✓ for targets that I regularly check in [rust-cross-toolchain](https://github.com/taiki-e/rust-cross-toolchain) that the `cargo test` works. (riscv32-unknown-linux-gnu,{riscv64,s390x}-unknown-linux-musl)
- Targets where `cargo run` works but `cargo test` does not work tend to have incomplete std support (e.g., riscv32 musl https://github.com/taiki-e/rust-cross-toolchain/commit/f3068b66e042895806538bebba1ea982f13bfbb1), so I included them in the group below that means “work in progress” rather than in this group.
- Set powerpc64le FreeBSD to ✓ on both std and host_tools, because the [Rust package](https://www.freshports.org/lang/rust/) is available.
- Set to ? (which means "unknown" or “work in progress”) for all other affected targets because these are Linux, Android, FreeBSD, or Fuchsia, all of which are operating systems that support std if properly supported.
r? Noratrieb
cc ``@harmou01``
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fix: Disable `<` typing handler again
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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