Fix broken link to Miri intrinsics in documentation
This PR updates an outdated link in the library/core/src/intrinsics/mod.rs file. The previous link, pointing to the Miri repository's src/shims/intrinsics directory, has been replaced with the correct one: https://github.com/rust-lang/miri/tree/master/src/intrinsics. This ensures that users can access the appropriate resources for the relevant intrinsic functions.
Re-add `DynSend` and `DynSync` impls for `TyCtxt`
They were somewhat unexpectedly removed in #136731. This PR adds them back, as requested in https://github.com/rust-lang/rust/pull/136731#issuecomment-2702504644. I've also tried to expand the comments a bit to make it less likely that they're removed again in the future.
r? `@SparrowLii`
Move `yield` expressions behind their own feature gate
In order to make progress with the `iter!` macro (e.g. in #137725), we need `yield` expressions to be available without the `coroutines` feature. This PR moves `yield` to be guarded by the `yield_expr` feature so that we can stabilize that independently (or at least, concurrently with the `iter_macro` feature). Note that once `yield` is stable, it will still be an error to use `yield` expressions outside something like a generator or coroutine, and these features remain unstable.
r? `@oli-obk`
Reduce the noise of bootstrap changelog warnings in --dry-run mode
Presently x.py displays "There have been changes to x.py since you last updated:" note only once when run normally, but on every invocation when run with `--dry-run`.
The disparity is not exactly intentonal, but just a historical accident.
It was made to be printed once in https://github.com/rust-lang/rust/pull/117815 via storing `.last-warned-change-id` on disk in `{config.out}/bootstrap` (i.e. `build/bootstrap`) directory.
But that didn't quite work for `--dry-run`, since `{config.out}/bootsrap` points to `build/tmp-dry-run/bootstrap` which *isn't* created in dry-run mode, so file creation fails.
This got fixed in https://github.com/rust-lang/rust/pull/118789 and now `--dry-run` does not save `.last-warned-change-id` at all. (Nor does it read it, since it cannot know to read from non-dry-run location)
This PR simply stops displaying the changelog altogether in --dry-run mode.
<details>
<summary>previous attempt (outdated)</summary>
This PR takes a different approach, and instead of not-writing the stamp in `--dry-run` mode it instead tries harder to yes-write it, and, specifically, creates `build/tmp-dry-run/bootstrap` directory to do so. If neccessary (i.e. if there are changes newer than the `change-id` stamp of config.toml to warn about).
Note that `build/tmp-dry-run/` was *already* being created, so making an extra `boostrap` sub-folder should not meaningfully pollute the build dir.
</details>
(Apologies for the, perhaps, excessively wordy PR, I'm new to this)
Use final path segment for diagnostic
Test changes should prove the effect of this PR; we want to mention the *function name* not the arbitrary first segment of the path.
trim channel value in `get_closest_merge_commit`
This was a silly bug which caused `git_upstream_merge_base` to never work because it was `nightly\n` not `nightly`.
bootstrap and compiletest: Use `size_of_val` from the prelude instead of imported
Use `std::mem::size_of_val` from the prelude instead of importing or qualifying it.
This function was added to all preludes in Rust 1.80.
r? ``@jieyouxu``
Add timestamp to unstable feature usage metrics
part of https://github.com/rust-lang/rust/issues/129485
with this we should be able to temporarily enable metrics on docs.rs to gather a nice test dataset for the initial PoC dashboard
r? ```@estebank```
handle forced compiler and revert #137476
Fixes https://github.com/rust-lang/rust/issues/138004
I would appreciate it if we could measure CI pipelines with the current changes to see if this reduces recent CI overhead. cc `@rust-lang/infra`
try-job: dist-powerpc64le-linux
Inline `FnOnce`/`FnMut`/`Fn` shims once again
This PR fixes the argument checking for `extern "rust-call"` ABI functions with a spread arg, which do no expect their arguments to be exploded from a tuple like closures do.
Secondly, it removes the hack that prevented them from being inlined. This results in more work done by the compiler, but it does end up allowing us to inline functions we didn't before.
Fixes#137901
Rollup of 20 pull requests
Successful merges:
- #134063 (dec2flt: Clean up float parsing modules)
- #136581 (Retire the legacy `Makefile`-based `run-make` test infra)
- #136662 (Count char width at most once in `Formatter::pad`)
- #136764 (Make `ptr_cast_add_auto_to_object` lint into hard error)
- #136798 (Added documentation for flushing per #74348)
- #136865 (Perform deeper compiletest path normalization for `$TEST_BUILD_DIR` to account for compare-mode/debugger cases, and normalize long type file filename hashes)
- #136975 (Look for `python3` first on MacOS, not `py`)
- #136977 (Upload Datadog metrics with citool)
- #137240 (Slightly reformat `std::fs::remove_dir_all` error docs)
- #137298 (Check signature WF when lowering MIR body)
- #137463 ([illumos] attempt to use posix_spawn to spawn processes)
- #137477 (uefi: Add Service Binding Protocol abstraction)
- #137569 (Stabilize `string_extend_from_within`)
- #137633 (Only use implied bounds hack if bevy, and use deeply normalize in implied bounds hack)
- #137679 (Various coretests improvements)
- #137723 (Make `rust.description` more general-purpose and pass `CFG_VER_DESCRIPTION`)
- #137728 (Remove unsizing coercions for tuples)
- #137731 (Resume one waiter at once in deadlock handler)
- #137875 (mir_build: Integrate "simplification" steps into match-pair-tree creation)
- #138028 (compiler: add `ExternAbi::is_rustic_abi`)
r? `@ghost`
`@rustbot` modify labels: rollup
compiler: add `ExternAbi::is_rustic_abi`
Various parts of the compiler were hand-rolling this extremely simple check that is nonetheless easy to get wrong as the compiler evolves over time. Discourage them from being so "original" again by replacing it with a single implementation on the type that represents these ABIs. This simplifies a surprising amount of code as a result.
Also fixes#132981, an ICE that emerged due to other checks being made stricter.
mir_build: Integrate "simplification" steps into match-pair-tree creation
The “simplification” step helps to prepare THIR patterns for lowering into MIR, and originally dates back to the earliest days of MIR in the compiler.
Over time, various intermediate data structures have been introduced (e.g. `MatchPair`, later renamed to `MatchPairTree`) that reduce the need for a separate simplification step, because some of the necessary simplifications can be built into the construction of those intermediate structures instead. This PR continues that process to its logical conclusion and removes the simplification step entirely, by integrating its remaining responsibilities into match-pair-tree creation: flattening “irrefutable” nodes, collecting bindings/ascriptions in flat lists, and sorting or-patterns after other subpatterns.
This has a few immediate benefits:
- We can remove `TestCase::Irrefutable`, which was not allowed to exist after simplification, and was much larger than other test-case variants.
- We can make `MatchPairTree::place` non-optional, because only irrefutable nodes could fail to have a place.
In the future, this should also help with some ideas I have for simplifying how `AscribeUserType` and `ExpandedConstant` nodes are handled, by representing them as side-data keyed by THIR pattern ID, so that they are no longer their own kinds of THIR pattern node.
Resume one waiter at once in deadlock handler
When multiple query loop errors occur in the code, only one waiter should be resumed at a time to avoid waking up multiple waiters at the same time and causing deadlock due to thread grabbing.
This fixes the UI failures in #132051
cc `@Zoxc` `@cjgillot` `@nnethercote` `@bjorn3` `@Kobzol`
Zulip discussion [here](https://rust-lang.zulipchat.com/#narrow/channel/187679-t-compiler.2Fwg-parallel-rustc/topic/Deadlocks.20and.20Rayon)
Edit: We can't reproduce these bugs with the existing test suits, so we keep them until we merge #132051
UPDATES #129912
UPDATES #120757
UPDATES #129911
Various coretests improvements
The first commit is not yet strictly necessary as directly testing libcore works though useless work, but will be necessary once https://github.com/rust-lang/rust/pull/136642 migrates the liballoc tests into a separate package. The second commit fixes https://github.com/rust-lang/rust/issues/137478 and ensures that coretests actually gets tested on all CI job. The third commit fixes an error that didn't get caught because coretests doesn't run on the wasm32 CI job.
Only use implied bounds hack if bevy, and use deeply normalize in implied bounds hack
Consolidates the implied bounds computation mode into a single function, which deeply normalizes, and if it's in **compat** mode (for bevy), it extracts outlives bounds from the infcx.
Previously, we were using the implied bounds compat mode in two cases:
1. During WF, if it detects `ParamSet`
2. EVERYWHERE ELSE (lol) -- e.g. borrowck, predicate entailment, etc.
While I think this is fine, and the net effect was just that we emitted fewer diagnostics, it makes me uncomfortable that all crates were using the supposed "compat" code.
Fixes#137767
uefi: Add Service Binding Protocol abstraction
- Some UEFI protocols such as TCP4, TCP6, UDP4, UDP6, etc are managed by service binding protocol.
- A new instance of such protocols is created and destroyed using the corresponding service binding protocol.
- This PR adds abstractions to make using such protocols simpler using Rust Drop trait.
- The reason to add these abstractions in a seperate PR from TCP4 Protocol is to make review easier.
[EFI_SERVICE_BINDING_PROTCOL](https://uefi.org/specs/UEFI/2.11/11_Protocols_UEFI_Driver_Model.html#efi-service-binding-protocol)
cc ````@nicholasbishop````
[illumos] attempt to use posix_spawn to spawn processes
illumos has `posix_spawn`, and the very newest versions also have `_addchdir`, so use that. POSIX standardized this function so I also added a weak symbol lookup for the non `_np` version. (illumos has both.)
This probably also works on Solaris, but I don't have access to an installation to validate this so I decided to focus on illumos instead.
This is a nice ~4x performance improvement for process creation. My go-to as usual is nextest against the clap repo, which acts as a stress test for process creation -- with [this commit]:
```console
$ cargo nextest run -E 'not test(ui_tests) and not test(example_tests)'
before: Summary [ 1.747s] 879 tests run: 879 passed, 2 skipped
after: Summary [ 0.445s] 879 tests run: 879 passed, 2 skipped
```
[this commit]: fde45f9aea
Slightly reformat `std::fs::remove_dir_all` error docs
To make the error cases easier to spot on a quick glance, as I've been bitten by this a couple of times already 💀
cc #137230.
Upload Datadog metrics with citool
This removes one Python script and also the installation of the `datadog-ci` JavaScript package, along with the corresponding package and lock file.
r? `@ghost`
Look for `python3` first on MacOS, not `py`
`py` is not installed by default *and* trying to run it results in a popup asking if you want to install it. `python3` is installed by default.
This hopefully should not be too disruptive to people on Windows, since they should be going through `x.ps1` instead anyway. Just in case, I've added a check for Cygwin and Msys (i'm not sure how else you'd get a bash shell on windows).
I've tested this on macOS, WSL, "git bash" (which appears to be MSYS), and MSVC with `bash -c ./x` (which runs in WSL, but differently than interactive bash 🙃). I haven't tested Cygwin, which is unsupported anyway, but the code tries to make it work.
Perform deeper compiletest path normalization for `$TEST_BUILD_DIR` to account for compare-mode/debugger cases, and normalize long type file filename hashes
Fixes#136510.
### Summary
- Whereas previously `$TEST_BUILD_DIR` is a normalization of `/path/to/build/test/<test_suite_name>/`, we now more deeply normalize. `$TEST_BUILD_DIR` now becomes a normalization of `/path/to/build/test/<test_suite_name>/<subdirs>/$name.$revision.$compare_mode.$debugger/` to normalize away path name differences when `--compare-mode` and/or `--debugger` are specified.
- We also centralize the normalization of long type name hashes
cf. https://github.com/rust-lang/rust/pull/136328#discussion_r1936760908.
### Review advice
- Best reviewed commit-by-commit.
- Split into 3 commits:
- **Commit 1**: compiletest changes to have `$TEST_BUILD_DIR` more deeply normalize.
- **Commit 2**: remove per-test hacks for long type path hash normalizations, and rebless tests *specifically* affected by that.
- **Commit 3**: rebless other tests that were changed as a side-effect of deeper `$TEST_BUILD_DIR` normalizations.
**Commit 2** is created via first finding tests that try to perform long type file hash normalizations on an ad hoc, per-test basis:
```
rg --no-ignore -l --no-ignore -F -e "long-type" tests/ui/**/*.rs
```
<details>
<summary>Tests with ad hoc long-type hash normalizations</summary>
```
tests/ui/type_length_limit.rs
tests/ui/traits/on_unimplemented_long_types.rs
tests/ui/regions/issue-102374.rs
tests/ui/recursion/recursion.rs
tests/ui/recursion/issue-83150.rs
tests/ui/recursion/issue-23122-2.rs
tests/ui/methods/inherent-bound-in-probe.rs
tests/ui/issues/issue-67552.rs
tests/ui/issues/issue-37311-type-length-limit/issue-37311.rs
tests/ui/issues/issue-20413.rs
tests/ui/issues/issue-8727.rs
tests/ui/infinite/infinite-instantiation.rs
tests/ui/infinite/infinite-instantiation-struct-tail-ice-114484.rs
tests/ui/higher-ranked/trait-bounds/hrtb-doesnt-borrow-self-1.rs
tests/ui/higher-ranked/trait-bounds/hrtb-doesnt-borrow-self-2.rs
tests/ui/higher-ranked/trait-bounds/hang-on-deeply-nested-dyn.rs
tests/ui/error-codes/E0275.rs
tests/ui/diagnostic-width/secondary-label-with-long-type.rs
tests/ui/diagnostic-width/long-e0277.rs
tests/ui/diagnostic-width/non-copy-type-moved.rs
tests/ui/diagnostic-width/long-E0308.rs
tests/ui/diagnostic-width/E0271.rs
tests/ui/diagnostic-width/binop.rs
```
</details>
These ad hoc normalizations were removed, and they are reblessed.
r? `````@lqd`````
