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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: 51ff895062ba60a7cba53f57af928c3fb7b0f2f4
Filtered ref: 5057370cda58bcaad24ea094ec11c8c01b24c2bc
This merge was created using https://github.com/rust-lang/josh-sync.
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This updates the rust-version file to 51ff895062ba60a7cba53f57af928c3fb7b0f2f4.
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Consolidate staging for compiletest steps in bootstrap
This PR finishes the initial pass of refactorings that fixed up staging of various bootstrap steps after the stage0 redesign. Now the *real* refactorings can begin =D
It fixes the unnecessary stage2 build of cargo for run-make tests (https://rust-lang.zulipchat.com/#narrow/channel/326414-t-infra.2Fbootstrap/topic/run-make.20cargo.20staging/with/536662651), and also consolidates staging of messages printed by bootstrap for test steps (`Testing stageN...` etc.).
r? `@jieyouxu`
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Example
---
**Not applicable**:
```rust
fn foo() {
match () {
() => {
t(|n|$0 n + 100);
}
}
}
```
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improve process::abort rendering in Miri backtraces
Also, avoid using the `sys` function directly in the panic machinery -- that seems like an unnecessary layering violation.
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r=notriddle
Fix search index generation
Fixes this issue:
```
error: couldn't generate documentation: failed to read column from disk: data consumer error: missing field `unknown number` at line 1 column 8
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= note: failed to create or modify "build/x86_64-unknown-linux-gnu/test/rustdoc-gui/doc/search.index/entry/": failed to read column from disk: data consumer error: missing field `unknown number` at line 1 column 8
warning: `theme_css` (lib doc) generated 1 warning
error: could not document `theme_css`
```
The problem was that a conversion was forgotten for the `ItemType` enum.
Thanks a lot to `@janis-bhm!`
r? `@lolbinarycat`
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Add maintainer for VxWorks
Hi,
This adds me as a target maintainer for VxWorks. I am currently a member of the VxWorks compiler team and I am actively working on improving rust support for VxWorks.
Thanks!
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Remove dead code stemming from an old effects desugaring
CC https://github.com/rust-lang/rust/pull/132374, https://github.com/rust-lang/rust/pull/133443.
r? fee1-dead
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r=GuillaumeGomez
fix rustdoc `render_call_locations` panicking because of default span `DUMMY_SP` pointing at non local-source file
fixes https://github.com/rust-lang/rust/issues/144752
related to/builds on https://github.com/rust-lang/rust/pull/145008
bevy still crashes in the same way as rust-lang/rust#144752 when building docs on nightly, and from what I can tell the cause seems to be the following (copied from zulip [#t-rustdoc > docs on nightly with example scrapes crash](https://rust-lang.zulipchat.com/#narrow/channel/266220-t-rustdoc/topic/docs.20on.20nightly.20with.20example.20scrapes.20crash)):
> render_call_locations tries to [find](https://github.com/rust-lang/rust/blob/84a17470220e7adf249b18d7c0178dfbede89462/src/librustdoc/html/render/mod.rs#L2816) the source span of a call to add as an example, but the example files are never actually in the source map from what I can tell, and so it falls back to the default span, which points at the first file in the source map.
> Now, the issue that guillaume mentions [here](https://github.com/rust-lang/rust/pull/145008) adds new files to the source map in order to get them into the dep info, and that leads to some files, namely docs-rs/trait-tags.html in the case of bevy because it's added with --html-after-content, being added before any source files, so then the default span points at them, and when href_from_span tries to find the [source file](https://github.com/rust-lang/rust/blob/84a17470220e7adf249b18d7c0178dfbede89462/src/librustdoc/html/render/context.rs#L368) corresponding to the span, the file doesn't belong to local_sources, and it short circuits.
> This can be fixed by just not using DUMMY_SP as the default span and calculating, for example, the crates root source file as the span, because I'm not entirely sure what the href from that span is actually used for; it's not what links to the example in the end.
> I think the proper way of fixing this would be to make sure the example files are part of the local_sources or at least the source map, but I don't know nearly enough about rust internals to be able to figure out how to fix that.
I've included a test that's mostly copied from rust-lang/rust#145008's test with the addition of `--html-after-content after.html` in the `RUSTDOCFLAGS`, which panics on master in conjunction with the `-Zrustdoc-scrape-examples` cargo flag.
cc `@GuillaumeGomez`
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fix a constness ordering bug in rustfmt
Normally, changes to rustfmt go into the separate repo. But, in this case, the bug is introduced in a local change and therefore isn't present in the rustfmt repo.
Related to: https://github.com/rust-lang/rust/pull/146071
Fixes https://github.com/rust-lang/rustfmt/issues/6619.
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rustdoc-search: skip loading unneeded fnData
Fixes rust-lang/rust#146063 (probably)
Based on the test I ran, it seems like most of the CPU time is being spent loading function signature data. This PR should avoid that.
https://notriddle.com/rustdoc-html-demo-12/skip-loading-function-data/doc/std/index.html
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add span to struct pattern rest (..)
Struct pattern rest (`..`) did not retain span information compared to normal fields. This patch adds span information for it.
The motivation of this patch comes from when I implemented this PR for Clippy: https://github.com/rust-lang/rust-clippy/pull/15000#discussion_r2134145163
It is possible to get the span of the Et cetera in a bit roundabout way, but I thought this would be nicer.
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stabilize c-style varargs for sysv64, win64, efiapi, aapcs
This has been split up so the PR now only contains the extended_varargs_abi_support stabilization; "system" has been moved to https://github.com/rust-lang/rust/pull/145954.
**Previous (combined) PR description:**
This stabilizes extern block declarations of variadic functions with the system, sysv64, win64, efiapi, aapcs ABIs. This corresponds to the extended_varargs_abi_support and extern_system_varargs feature gates.
The feature gates were split up since it seemed like there might be further discussion needed for what exactly "system" ABI variadic functions should do, but a [consensus](https://github.com/rust-lang/rust/issues/136946#issuecomment-2967847553) has meanwhile been reached: they shall behave like "C" functions. IOW, the ABI of a "system" function is (bold part is new in this PR):
- "stdcall" for win32 targets **for non-variadic functions**
- "C" for everything else
This had been previously stabilized *without FCP* in https://github.com/rust-lang/rust/pull/116161, which got reverted in https://github.com/rust-lang/rust/pull/136897. There was also a "fun" race condition involved with the system ABI being [added](https://github.com/rust-lang/rust/pull/119587) to the list of variadic-supporting ABIs between the creation and merge of rust-lang/rust#116161.
There was a question raised [here](https://github.com/rust-lang/rust/pull/116161#issuecomment-1983829513) whether t-lang even needs to be involved for a change like this. Not sure if that has meanwhile been clarified? The behavior of the "system" ABI (a Rust-specific ABI) definitely feels like t-lang territory to me.
Fixes rust-lang/rust#100189
Cc `@rust-lang/lang`
# Stabilization report
> ## General design
> ### What is the RFC for this feature and what changes have occurred to the user-facing design since the RFC was finalized?
AFAIK there is no RFC. The tracking issues are
- https://github.com/rust-lang/rust/issues/100189
- https://github.com/rust-lang/rust/issues/136946
> ### What behavior are we committing to that has been controversial? Summarize the major arguments pro/con.
The only controversial point is whether "system" ABI functions should support variadics.
- Pro: This allows crates like windows-rs to consistently use "system", see e.g. https://github.com/microsoft/windows-rs/issues/3626.
- Cons: `@workingjubilee` had some implementation concerns, but I think those have been [resolved](https://github.com/rust-lang/rust/issues/136946#issuecomment-2967847553). EDIT: turns out Jubilee still has concerns (she mentioned that in a DM); I'll let her express those.
Note that "system" is already a magic ABI we introduced to "do the right thing". This just makes it do the right thing in more cases. In particular, it means that on Windows one can almost always just do
```rust
extern "system" {
// put all the things here
}
```
and it'll do the right thing, rather than having to split imports into non-varargs and varargs, with the varargs in a separate `extern "C"` block (and risking accidentally putting a non-vararg there).
(I am saying "almost" always because some Windows API functions actually use cdecl, not stdcall, on x86. Those of course need to go in `extern "C"` blocks.)
> ### Are there extensions to this feature that remain unstable? How do we know that we are not accidentally committing to those?
Actually defining variadic functions in Rust remains unstable, under the [c_variadic feature gate](https://github.com/rust-lang/rust/issues/44930).
> ## Has a Call for Testing period been conducted? If so, what feedback was received?
>
> Does any OSS nightly users use this feature? For instance, a useful indication might be "search <grep.app> for `#![feature(FEATURE_NAME)]` and had `N` results".
There was no call for testing.
A search brings up https://github.com/rust-osdev/uefi-rs/blob/main/uefi-raw/src/table/boot.rs using this for "efiapi". This doesn't seem widely used, but it is an "obvious" gap in our support for c-variadics.
> ## Implementation quality
All rustc does here is forward the ABI to LLVM so there's lot a lot to say here...
> ### Summarize the major parts of the implementation and provide links into the code (or to PRs)
>
> An example for async closures: <https://rustc-dev-guide.rust-lang.org/coroutine-closures.html>.
The check for allowed variadic ABIs is [here](https://github.com/rust-lang/rust/blob/9c870d30e2d6434c9e9a004b450c5ccffdf3d844/compiler/rustc_hir_analysis/src/lib.rs#L109-L126).
The special handling of "system" is [here](https://github.com/rust-lang/rust/blob/c24914ec8329b22ec7bcaa6ab534a784b2bd8ab9/compiler/rustc_target/src/spec/abi_map.rs#L82-L85).
> ### Summarize existing test coverage of this feature
>
> Consider what the "edges" of this feature are. We're particularly interested in seeing tests that assure us about exactly what nearby things we're not stabilizing.
>
> Within each test, include a comment at the top describing the purpose of the test and what set of invariants it intends to demonstrate. This is a great help to those reviewing the tests at stabilization time.
>
> - What does the test coverage landscape for this feature look like?
> - Tests for compiler errors when you use the feature wrongly or make mistakes?
> - Tests for the feature itself:
> - Limits of the feature (so failing compilation)
> - Exercises of edge cases of the feature
> - Tests that checks the feature works as expected (where applicable, `//@ run-pass`).
> - Are there any intentional gaps in test coverage?
>
> Link to test folders or individual tests (ui/codegen/assembly/run-make tests, etc.).
Prior PRs add a codegen test for all ABIs and tests actually calling extern variadic functions for sysv64 and win64:
- https://github.com/rust-lang/rust/pull/144359
- https://github.com/rust-lang/rust/pull/144379
We don't have a way of executing uefi target code in the test suite, so it's unclear how to fully test efiapi. aapcs could probably be done? (But note that we have hardly an such actually-calling-functions tests for ABI things, we almost entirely rely on codegen tests.)
The test ensuring that we do *not* stabilize *defining* c-variadic functions is `tests/ui/feature-gates/feature-gate-c_variadic.rs`.
> ### What outstanding bugs in the issue tracker involve this feature? Are they stabilization-blocking?
None that I am aware of.
> ### What FIXMEs are still in the code for that feature and why is it ok to leave them there?
None that I am aware of.
> ### Summarize contributors to the feature by name for recognition and assuredness that people involved in the feature agree with stabilization
`@Soveu` added sysv64, win64, efiapi, aapcs to the list of ABIs that allow variadics, `@beepster4096` added system. `@workingjubilee` recently refactored the ABI handling in the compiler, also affecting this feature.
> ### Which tools need to be adjusted to support this feature. Has this work been done?
>
> Consider rustdoc, clippy, rust-analyzer, rustfmt, rustup, docs.rs.
Maybe RA needs to be taught about the new allowed ABIs? No idea how precisely they mirror what exactly rustc accepts and rejects here.
> ## Type system and execution rules
> ### What compilation-time checks are done that are needed to prevent undefined behavior?
>
> (Be sure to link to tests demonstrating that these tests are being done.)
Nothing new here, this just expands the existing support for calling variadic functions to more ABIs.
> ### Does the feature's implementation need checks to prevent UB or is it sound by default and needs opt in in places to perform the dangerous/unsafe operations? If it is not sound by default, what is the rationale?
Nothing new here, this just expands the existing support for calling variadic functions to more ABIs.
> ### Can users use this feature to introduce undefined behavior, or use this feature to break the abstraction of Rust and expose the underlying assembly-level implementation? (Describe.)
Nothing new here, this just expands the existing support for calling variadic functions to more ABIs.
> ### What updates are needed to the reference/specification? (link to PRs when they exist)
- https://github.com/rust-lang/reference/pull/1936
> ## Common interactions
> ### Does this feature introduce new expressions and can they produce temporaries? What are the lifetimes of those temporaries?
No.
> ### What other unstable features may be exposed by this feature?
None.
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This was done in #145740 and #145947. It is causing problems for people
using r-a on anything that uses the rustc-dev rustup package, e.g. Miri,
clippy.
This repository has lots of submodules and subtrees and various
different projects are carved out of pieces of it. It seems like
`[workspace.dependencies]` will just be more trouble than it's worth.
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Because duplicates can be found with traits. Worse, the inherent methods could be private, and we'll discover that only later. But even if they're not they're different methods, and its seems worthy to present them all to the user.
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To the extent possible.
Previously they were confused. Sometimes generic params were treated as `Param` and sometimes as `Placeholder`. A completely redundant (in the new solver) mapping of salsa::Id to ints to intern some info where we could just store it uninterned (not in Chalk though, for some weird reason).
Plus fix a cute bug in closure substitution that was caught by the assertions of Chalk but the next solver did not have such assertions. Do we need more assertions?
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outside of local_sources
add test against crashing with --html-after-content file
correctly add --html-after-content to env not args
formatting fix for rustdoc-call-locations-after-content/rmake.rs
Use local crate source file as default span in `render_call_locations`
- avoids unwrapping the first file added to the source map as a local file in
`href_from_span`
move test to tests/rustdoc-gui, rename to scrape_examples_ice
test link is correct
use rustdocflags, rename path in example, track lock file
factor out duplicate function calls
use compile-flags to make sure the after.html file is actually included in the rustdoc call
fix goml go-to path
increment assert-count in sidebar-source-code.goml
adjust crate-search width in search-result-display.goml
renamed Bar in scrape_examples_ice test
make crate name shorter ..
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Normally, changes to rustfmt go into the separate repo. But, in
this case, the bug is introduced in a local change and therefore
isn't present in the rustfmt repo.
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style)"
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compiletest: Capture panic messages via a custom panic hook
Currently, output-capture of panic messages relies on special cooperation between `#![feature(internal_output_capture)]` and the default panic hook. That's a problem if we want to perform our own output capture, because the default panic hook won't know about our custom output-capture mechanism.
We can work around that by installing a custom panic hook that prints equivalent panic messages to a buffer instead.
The custom hook is always installed, but delegates to the default panic hook unless a panic-capture buffer has been installed on the current thread. A panic-capture buffer is only installed on compiletest test threads (by the executor), and only if output-capture is enabled.
---
Right now this PR doesn't provide any particular concrete benefits. But it will be essential as part of further efforts to replace compiletest's use of `#![feature(internal_output_capture)]` with our own output-capture mechanism.
r? jieyouxu
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fixup nix dev shell again
r? Noratrieb
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improve output for 'cargo miri test --help'
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Pull recent changes from https://github.com/rust-lang/rust via Josh.
Upstream ref: 828e45ad11ce4ab56dd64e93f1fb5dd8f0c0ae93
Filtered ref: 10ab51e1b1b8eadb430163bd78ef39c0721cfbf8
This merge was created using https://github.com/rust-lang/josh-sync.
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This updates the rust-version file to 828e45ad11ce4ab56dd64e93f1fb5dd8f0c0ae93.
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