Add epollerr support
Fixes#3816
For socketpair, if the peer fd is closed while having data in its read buffer, ``EPOLLER`` will be thrown.
This is still WIP because I am currently finding a way to check if peer fd still has something in its ``readbuf`` when it is closed and add the ``EPOLLER`` flag In ``get_epoll_ready_events``.
Disable `dump-ice-to-disk` for i686-mingw (again)
To avoid blocking full CI or `i686-mingw` try jobs (failed in https://github.com/rust-lang/rust/pull/127679#issuecomment-2295184771).
At least we now have some context for why the assertion failed.
Anyone with r+ can approve this.
Remove JohnTitor from review rotation
This removes `@JohnTitor` from the review rotation. I haven't seen any comments from them in this repository since February, and PRs that get assigned to them tend to sit a few weeks until someone notices. I see that they are still semi-active with libc, but I haven't been able to reach them on Zulip. If `@JohnTitor` wants to get back on the rotation in the future, they are welcome (I don't want to pressure them, their support in the past was much appreciated).
Use cnum for extern crate data key
Noticed this when fixing #129184. I still have yet to put up a fix for that (mostly because I'm too lazy to minimize a test, that will come soon though).
Port `run-make/libtest-json/validate_json.py` to Rust
This is a trivial Python script that simply tries to parse each line of stdin (i.e. the test process output) as JSON, to verify that the overall output is JSON Lines.
We can perform the same check directly in `rmake.rs` using `serde_json`.
r? ````@jieyouxu````
Fix `is_val_statically_known` for floats
The LLVM intrinsic name for floats differs from the LLVM type name, so handle them explicitly. Also adds support for `f16` and `f128`.
`f16`/`f128` tracking issue: #116909
Use `ar_archive_writer` for writing COFF import libs on all backends
This is mostly the same as the llvm backend but with the cranelift version copy/pasted in place of the LLVM library.
try-job: x86_64-msvc
try-job: i686-msvc
try-job: i686-mingw
try-job: aarch64-gnu
try-job: aarch64-apple
try-job: test-various
try-job: armhf-gnu
Re-enable more debuginfo tests on Windows
These tests used to be disabled on all Windows hosts. Now they're fully enabled or just disabled on windows-gnu with an issue citation that clearly explains why.
The changes in this PR are not tested by PR CI, but I've tested it using try-jobs below.
try-job: i686-msvc
try-job: i686-mingw
try-job: x86_64-mingw
try-job: x86_64-msvc
Re-enable `dump-ice-to-disk` for Windows
This test was previously flakey on `i686-mingw` (reason unknown), but since some modifications (quarantining each ICE test in separate tmp dirs, adding/removing `RUSTC_ICE` env vars as suitable to prevent any kind of environmental influence), I could no longer make it fail on `i686-mingw`.
I tried running this test (without the `ignore-windows` of course) a bunch of times via `i686-mingw` try jobs and it refused to fail (see #128958). I was also never able to reproduce the failure locally.
In any case, if this turns out to be still flakey on `i686-mingw`, we can revert the removal of `ignore-windows` but this time we'll have way more context for why the test failed.
Running the `i686-mingw` alongside some Windows jobs for basic santiy check. But the try jobs succeeding is insufficient to guarantee reproducibility.
cc #129115 for backlink.
try-job: x86_64-msvc
try-job: x86_64-mingw
try-job: i686-msvc
try-job: i686-mingw
Testcase fix for epoll
Fixes#3811
This PR:
- Fixed the error in ``epoll_ctl_del`` test
- Simplified the logic in ``epoll_ctl_mod`` test
- Added a new test to check if flag that we don't register won't trigger notification (double negation sounds a bit confusing here, feel free to suggest a better one ;) )
- Use assert_eq(0) for epoll_ctl test
Stabilize `unsafe_attributes`
# Stabilization report
## Summary
This is a tracking issue for the RFC 3325: unsafe attributes
We are stabilizing `#![feature(unsafe_attributes)]`, which makes certain attributes considered 'unsafe', meaning that they must be surrounded by an `unsafe(...)`, as in `#[unsafe(no_mangle)]`.
RFC: rust-lang/rfcs#3325
Tracking issue: #123757
## What is stabilized
### Summary of stabilization
Certain attributes will now be designated as unsafe attributes, namely, `no_mangle`, `export_name`, and `link_section` (stable only), and these attributes will need to be called by surrounding them in `unsafe(...)` syntax. On editions prior to 2024, this is simply an edition lint, but it will become a hard error in 2024. This also works in `cfg_attr`, but `unsafe` is not allowed for any other attributes, including proc-macros ones.
```rust
#[unsafe(no_mangle)]
fn a() {}
#[cfg_attr(any(), unsafe(export_name = "c"))]
fn b() {}
```
For a table showing the attributes that were considered to be included in the list to require unsafe, and subsequent reasoning about why each such attribute was or was not included, see [this comment here](https://github.com/rust-lang/rust/pull/124214#issuecomment-2124753464)
## Tests
The relevant tests are in `tests/ui/rust-2024/unsafe-attributes` and `tests/ui/attributes/unsafe`.
Use `FnSig` instead of raw `FnDecl` for `ForeignItemKind::Fn`, fix ICE for `Fn` trait error on safe foreign fn
Let's use `hir::FnSig` instead of `hir::FnDecl + hir::Safety` for `ForeignItemKind::Fn`. This consolidates some handling code between normal fns and foreign fns.
Separetly, fix an ICE where we weren't handling `Fn` trait errors for safe foreign fns.
If perf is bad for the first commit, I can rework the ICE fix to not rely on it. But if perf is good, I prefer we fix and clean up things all at once 👍
r? spastorino
Fixes#128764
Rollup of 6 pull requests
Successful merges:
- #128989 (Emit an error for invalid use of the linkage attribute)
- #129167 (mir/pretty: use `Option` instead of `Either<Once, Empty>`)
- #129168 (Return correct HirId when finding body owner in diagnostics)
- #129191 (rustdoc-json: Clean up serialization and printing.)
- #129192 (Remove useless attributes in merged doctest generated code)
- #129196 (Remove a useless ref/id/ref round-trip from `pattern_from_hir`)
r? `@ghost`
`@rustbot` modify labels: rollup
Remove a useless ref/id/ref round-trip from `pattern_from_hir`
This re-lookup of `&hir::Pat` by its ID appears to be an artifact of earlier complexity that has since been removed from the compiler.
Merely deleting the let/match results in borrow errors, but sprinkling `'tcx` in the signature allows it to work again, so I suspect that this code's current function is simply to compensate for overly loose lifetimes in the signature. Perhaps it made more sense at a time when HIR lifetimes were not tied to `'tcx`.
I spotted this while working on some more experimental changes, which is why I've extracted it into its own PR.
Remove useless attributes in merged doctest generated code
I took another look at the generated code for merged doctests and it seems like those attributes are only useful when running `rustc --test`, which isn't the case for merged doctests. Less code generated. \o/
r? `@notriddle`
rustdoc-json: Clean up serialization and printing.
Somewhat a followup to #128963, but makes sense regardless.
- Renames `out_path` to `out_dir` because it's not the path to the JSON, but the directory
- Also adds a comment explaining `None`
- Renames `write` to `serialize_and_write` because it does both.
- Also renames the self-profile activity name to be clear this measures both IO cost and serialization CPU cost
- Expands the timer to cover flushing
- Renames `output` to `output_crate`, to emphasize it's the contents, not the `--output` flag.
r? `@GuillaumeGomez`
Return correct HirId when finding body owner in diagnostics
Fixes#129145Fixes#128810
r? ```@compiler-errors```
```rust
fn generic<const N: u32>() {}
trait Collate<const A: u32> {
type Pass;
fn collate(self) -> Self::Pass;
}
impl<const B: u32> Collate<B> for i32 {
type Pass = ();
fn collate(self) -> Self::Pass {
generic::<{ true }>()
//~^ ERROR: mismatched types
}
}
```
When type checking the `{ true }` anon const we would error with a type mismatch. This then results in diagnostics code attempting to check whether its due to a type mismatch with the return type. That logic was implemented by walking up the hir until we reached the body owner, except instead of using the `enclosing_body_owner` function it special cased various hir nodes incorrectly resulting in us walking out of the anon const and stopping at `fn collate` instead.
This then resulted in diagnostics logic inside of the anon consts `ParamEnv` attempting to do trait solving involving the `<i32 as Collate<B>>::Pass` type which ICEs because it is in the wrong environment.
I have rewritten this function to just walk up until it hits the `enclosing_body_owner` and made some other changes since I found this pretty hard to read/understand. Hopefully it's easier to understand now, it also makes it more obvious that this is not implemented in a very principled way and is definitely missing cases :)
mir/pretty: use `Option` instead of `Either<Once, Empty>`
`Either` is wasteful for a one-or-none iterator, especially since `Once`
is already an `option::IntoIter` internally. We don't really need any of
the iterator mechanisms in this case, just a single conditional insert.
Emit an error for invalid use of the linkage attribute
fixes#128486
Currently, the use of the linkage attribute for Mod, Impl,... is incorrectly permitted. This PR will correct this issue by generating errors, and I've also added some UI test cases for it.
Related: #128552.
tls_leak_main_thread_allowed: make test check target_thread_local
Instead of ignoring the test entirely on some targets, make the test check the `target_thread_local` flag to determine whether `thread_local!` statics can be tracked by Miri and hence can have main-thread-TLS leaks ignored.
Detect multiple crate versions on method not found
When a type comes indirectly from one crate version but the imported trait comes from a separate crate version, the called method won't be found. We now show additional context:
```
error[E0599]: no method named `foo` found for struct `dep_2_reexport::Type` in the current scope
--> multiple-dep-versions.rs:8:10
|
8 | Type.foo();
| ^^^ method not found in `Type`
|
note: there are multiple different versions of crate `dependency` in the dependency graph
--> multiple-dep-versions.rs:4:32
|
4 | use dependency::{do_something, Trait};
| ^^^^^ `dependency` imported here doesn't correspond to the right crate version
|
::: ~/rust/build/x86_64-unknown-linux-gnu/test/run-make/crate-loading/rmake_out/multiple-dep-versions-1.rs:4:1
|
4 | pub trait Trait {
| --------------- this is the trait that was imported
|
::: ~/rust/build/x86_64-unknown-linux-gnu/test/run-make/crate-loading/rmake_out/multiple-dep-versions-2.rs:4:1
|
4 | pub trait Trait {
| --------------- this is the trait that is needed
5 | fn foo(&self);
| --- the method is available for `dep_2_reexport::Type` here
```
Fix#128569, fix#110926, fix#109161, fix#81659, fix#51458, fix#32611. Follow up to #124944.
CloneToUninit impls
As per #126799.
Also implements it for `Wtf8` and both versions of `os_str::Slice`.
Maybe it is worth to slap `#[inline]` on some of those impls.
r? `@dtolnay`
