rustdoc perf: clone `clean::Item` less
In https://github.com/rust-lang/rust/pull/130798, I caused a small perf regression for rustdoc (see https://github.com/rust-lang/rust/pull/130807#issuecomment-2373116917), so here is a small improvement to make up for it 😺.
This change is actually unrelated to the minor perf regression in `Item::stability` and instead fixes a more relevant perf problem that I found while investigating: For certain crates with many impls on type aliases, we unnecessarily cloned large `clean::Item`s multiple times -- now we just borrow them.
On implicit `Sized` bound on fn argument, point at type instead of pattern
Instead of
```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:20
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^ doesn't have a size known at compile-time
```
output
```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:29
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
```
[rustdoc] Remove unneeded jinja comments
This is a follow-up of https://github.com/rust-lang/rust/pull/130585.
Since we now check for the jinja comments we missed, we can now check for the jinja comments which are unneeded. It will make the parsing and therefore the compilation a tiny bit faster (well, if anyone sees a difference haha). The real goal is mostly to have easier to read template files. 😉
r? ``@notriddle``
Instead of
```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:20
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^ doesn't have a size known at compile-time
```
output
```
error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time
--> $DIR/issue-59324.rs:23:29
|
LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
| ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
```
Rollup of 11 pull requests
Successful merges:
- #130279 (Document subtleties of `ManuallyDrop`)
- #130517 (Add the library workspace to the suggested rust-analyzer config)
- #130820 (Fix diagnostics for coroutines with () as input.)
- #130833 (Fix the misleading diagnostic for `let_underscore_drop` on type without `Drop` implementation)
- #130845 (Utf8Chunks: add link to Utf8Chunk)
- #130850 (Pass Module Analysis Manager to Standard Instrumentations)
- #130861 (Use `mem::offset_of!` for `sockaddr_un.sun_path`)
- #130862 (rustdoc: do not animate :target when user prefers reduced motion)
- #130868 (Update FIXME comment in s390x_unknown_linux_*.rs)
- #130879 (Pass correct HirId to late_bound_vars in diagnostic code)
- #130880 (add missing FIXME(const-hack))
r? `@ghost`
`@rustbot` modify labels: rollup
rustdoc: do not animate :target when user prefers reduced motion
This accessibility improvement gates #129284 behind an inverted [prefers-reduced-motion](https://developer.mozilla.org/en-US/docs/Web/CSS/`@media/prefers-reduced-motion)` media query.
Don't keep the `external_traits` as shared mutable data between the
`DocContext` and `clean::Crate`. Instead, move the data over when necessary.
This allows us to get rid of a borrowck hack in the `DocVisitor`.
Clippy subtree update
r? `@Manishearth`
Really delayed sync (2 1/2 weeks), because of a `debug_assertion` we hit, and I didn't have the time to investigate earlier.
It would be nice to merge this PR with some priority, as it includes a lot of formatting changes due to the rustfmt bump.
Include Cargo.lock update due to Clippy version bump and ui_test bump in Clippy.
Rollup of 6 pull requests
Successful merges:
- #130549 (Add RISC-V vxworks targets)
- #130595 (Initial std library support for NuttX)
- #130734 (Fix: ices on virtual-function-elimination about principal trait)
- #130787 (Ban combination of GCE and new solver)
- #130809 (Update llvm triple for OpenHarmony targets)
- #130810 (Don't trap into the debugger on panics under Linux)
r? `@ghost`
`@rustbot` modify labels: rollup
Add `File` constructors that return files wrapped with a buffer
In addition to the light convenience, these are intended to raise visibility that buffering is something you should consider when opening a file, since unbuffered I/O is a common performance footgun to Rust newcomers.
ACP: https://github.com/rust-lang/libs-team/issues/446
Tracking Issue: #130804
rustdoc: inherit parent's stability where applicable
It is currently not possible for a re-export to have a different stability (https://github.com/rust-lang/rust/issues/30827). Therefore the standard library uses a hack when moving items like `std::error::Error` or `std::net::IpAddr` into `core` by marking the containing module (`core::error` / `core::net`) as unstable or stable in a later version than the items the module contains.
Previously, rustdoc would always show the *stability as declared* for an item rather than the *stability as publicly reachable* (i.e. the features required to actually access the item), which could be confusing when viewing the docs. This PR changes it so that we show the stability of the first unstable parent or the most recently stabilized parent instead, to hopefully make things less confusing.
fixes https://github.com/rust-lang/rust/issues/130765
screenshots:
 
Separate collection of crate-local inherent impls from error tracking
#119895 changed the return type of the `crate_inherent_impls` query from `CrateInherentImpls` to `Result<CrateInherentImpls, ErrorGuaranteed>` to avoid needing to use the non-parallel-friendly `track_errors()` to track if an error was reporting from within the query... This was mostly fine until #121113, which stopped halting compilation when we hit an `Err(ErrorGuaranteed)` in the `crate_inherent_impls` query.
Thus we proceed onwards to typeck, and since a return type of `Result<CrateInherentImpls, ErrorGuaranteed>` means that the query can *either* return one of "the list inherent impls" or "error has been reported", later on when we want to assemble method or associated item candidates for inherent impls, we were just treating any `Err(ErrorGuaranteed)` return value as if Rust had no inherent impls defined anywhere at all! This leads to basically every inherent method call failing with an error, lol, which was reported in #127798.
This PR changes the `crate_inherent_impls` query to return `(CrateInherentImpls, Result<(), ErrorGuaranteed>)`, i.e. returning the inherent impls collected *and* whether an error was reported in the query itself. It firewalls the latter part of that query into a new `crate_inherent_impls_validity_check` just for the `ensure()` call.
This fixes#127798.
Fix cargo staging for run-make tests
Follow-up to https://github.com/rust-lang/rust/pull/130642#issuecomment-2366891866 to make sure that when
```
$ COMPILETEST_FORCE_STAGE0=1 ./x test run-make --stage 0
```
is used, bootstrap cargo is used in order to avoid building stage 1 rustc. Note that run-make tests are usually not written with `--stage 0` in mind and some tests may rely on stage1 rustc (nightly) behavior, and it is expected that some tests will fail under this invocation.
This PR also fixes `tool::Cargo` staging in compiletest when preparing for `run-make` test mode, by chopping off a stage from the `compiler` passed to `tool::Cargo` such that when the user invokes with stage `N`
```
./x test run-make --stage N
```
the `run-make` test suite will be tested against the cargo built by stage `N` compiler. Let's take `N=1`, i.e. `--stage 1`, without chopping off a stage, previously `./x test run-make --stage 1` will cause stage 1 rustc + std to be built, then stage 2 rustc, and cargo will be produced by the stage 2 rustc, which is clearly not what we want. By chopping off a stage, it means that cargo will be produced by the stage 1 rustc.
cc #119946, #59864.
See discussions regarding the tool staging at https://rust-lang.zulipchat.com/#narrow/stream/326414-t-infra.2Fbootstrap/topic/.E2.9C.94.20stage1.20run-make.20tests.20now.20need.20stage2.20rustc.20built.20for.20c.2E.2E.2E.
Previously if you pass compiler stage 1 to `tool::Cargo`, it will build
stage2 rustc and give you back a cargo built with stage2 rustc, which is
not what we want.
This commit adds a hack that chops off a stage from the compiler passed
to `tool::Cargo`, meaning that we will get a cargo built with stage 1
compiler, avoiding unnecessary and incorrect build of stage2 rustc and
the cargo built by that.
