This commit removes the first of nine Clean impls on tuples, converting
it to a function instead.
The fact that these are impls causes several problems:
1. They are nameless, so it's unclear what they do.
2. It's hard to find where they're used apart from removing them and
seeing what errors occur (this applies to all Clean impls, not just
the tuple ones).
3. Rustc doesn't currently warn when impls are unused, so dead code
can accumulate easily (all Clean impls).
4. Their bodies often use tuple field indexing syntax (e.g., `self.1`)
to refer to their "arguments", which makes reading the code more
difficult.
As I noted, some of these problems apply to all Clean impls, but even
those problems are exacerbated by the tuple impls since they make
general understanding of the code harder.
Converting the impls to functions solves all four of these problems.
Fix ICE #91268 by checking that the snippet ends with a `)`
Fix#91268
Previously it was assumed that the last character of `snippet` will be a `)`, so using `snippet.len() - 1` as an index should be safe. However as we see in the test, it is possible to enter that branch without a closing `)`, and it will trigger the panic if the last character happens to be multibyte.
The fix is to ensure that the snippet ends with `)`, and skip the suggestion otherwise.
rustdoc: preload fonts
Follow-up from #82315.
I noticed that font loading was so slow that even when loading from local disk, we get a flash of unstyled text (FOUT) followed by a reflow when the fonts load. With this change, we reliably get the appropriate fonts in the first render pass when loading locally, and we get it some of the time when loading from a website.
This only preloads woff2 versions. According to https://caniuse.com/?search=preload and https://caniuse.com/?search=woff2, all browsers that support preload also support woff2, so this is fine; we will never load two copies of a font.
Don't preload italic font faces because they aren't used on all pages.
Demo: https://rustdoc.crud.net/jsha/preload-fonts/std/string/struct.String.html
Rollup of 12 pull requests
Successful merges:
- #89954 (Fix legacy_const_generic doc arguments display)
- #91321 (Handle placeholder regions in NLL type outlive constraints)
- #91329 (Fix incorrect usage of `EvaluatedToOk` when evaluating `TypeOutlives`)
- #91364 (Improve error message for incorrect field accesses through raw pointers)
- #91387 (Clarify and tidy up explanation of E0038)
- #91410 (Move `#![feature(const_precise_live_drops)]` checks earlier in the pipeline)
- #91435 (Improve diagnostic for missing half of binary operator in `if` condition)
- #91444 (disable tests in Miri that take too long)
- #91457 (Add additional test from rust issue number 91068)
- #91460 (Document how `last_os_error` should be used)
- #91464 (Document file path case sensitivity)
- #91466 (Improve the comments in `Symbol::interner`.)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Improve diagnostic for missing half of binary operator in `if` condition
Fixes#91421. I've also changed it so that it doesn't consume the `else` token in the error case, because it will try to consume it again afterwards, leading to this incorrect error message (where the `else` reported as missing is actually there):
```
error: expected one of `.`, `;`, `?`, `else`, or an operator, found `{`
--> src/main.rs:4:12
|
4 | } else { 4 };
| ^ expected one of `.`, `;`, `?`, `else`, or an operator
```
r? `@lcnr`
Move `#![feature(const_precise_live_drops)]` checks earlier in the pipeline
Should mitigate the issues found during MCP on #73255.
Once this is done, we should clean up the queries a bit, since I think `mir_drops_elaborated_and_const_checked` can be merged back into `mir_promoted`.
Fixes#90770.
cc ``@rust-lang/wg-const-eval``
r? ``@nikomatsakis`` (since they reviewed #71824)
Fix incorrect usage of `EvaluatedToOk` when evaluating `TypeOutlives`
A global predicate is not guarnatenteed to outlive all regions.
If the predicate involves late-bound regions, then it may fail
to outlive other regions (e.g. `for<'b> &'b bool: 'static` does not
hold)
We now only produce `EvaluatedToOk` when a global predicate has no
late-bound regions - in that case, the ony region that can be present
in the type is 'static
Enable svh tests on msvc
These tests were ignored for msvc in #30778 because of additional notes that were being added for some reason. I'm fairly confident this has been fixed in the intervening years so lets try re-enabling these tests.
Fixes#31306
Issue 90702 fix: Stop treating some crate loading failures as fatal errors
Surface mulitple `extern crate` resolution errors at a time.
This is achieved by creating a dummy crate, instead of aborting directly after the resolution error. The `ExternCrateError` has been added to allow propagating the resolution error from `rustc_metadata` crate to the `rustc_resolve` with a minimal public surface. The `import_extern_crate` function is a block that was factored out from `build_reduced_graph_for_item` for better organization. The only added functionality made to it where the added error handling in the `process_extern_crate` call. The remaining bits in this function are the same as before.
Resolves#90702
r? `@petrochenkov`
Disallow non-c-like but "fieldless" ADTs from being casted to integer if they use arbitrary enum discriminant
Code like
```rust
#[repr(u8)]
enum Enum {
Foo /* = 0 */,
Bar(),
Baz{}
}
let x = Enum::Bar() as u8;
```
seems to be unintentionally allowed so we couldn't disallow them now ~~, but we could disallow them if arbitrary enum discriminant is used before 1.56 hits stable~~ (stabilization was reverted).
Related: #88621
`@rustbot` label +T-lang
Cleanup: Eliminate ConstnessAnd
This is almost a behaviour-free change and purely a refactoring. "almost" because we appear to be using the wrong ParamEnv somewhere already, and this is now exposed by failing a test using the unstable `~const` feature.
We most definitely need to review all `without_const` and at some point should probably get rid of many of them by using `TraitPredicate` instead of `TraitRef`.
This is a continuation of https://github.com/rust-lang/rust/pull/90274.
r? `@oli-obk`
cc `@spastorino` `@ecstatic-morse`
Fixes 5088
Previously, rustfmt would add a new comment line anytime it reformatted
an itemized block within a comment when ``wrap_comments=true``. This
would lead to rustfmt adding empty comments with trailing whitespace.
Now, new comment lines are only added if the original comment spanned
multiple lines, if the comment needs to be wrapped, or if the comment
originally started with an empty comment line.
... if they use arbitrary enum discriminant. Code like
```rust
enum Enum {
Foo = 1,
Bar(),
Baz{}
}
```
seems to be unintentionally allowed so we couldn't disallow them now,
but we could disallow them if arbitrary enum discriminant is used before
1.56 hits stable.
Add tests for `normalize-docs` overflow errors
`@b-naber` do you understand why using `try_normalize_erasing_regions` doesn't silence these cycle errors? Rustdoc isn't emitting them, rustc is aborting before returning an error, even though the function has `try_` in the name.
cc https://github.com/rust-lang/rust/issues/82692, https://github.com/rust-lang/rust/pull/91255
expand: Turn `ast::Crate` into a first class expansion target
And stop creating a fake `mod` item for the crate root when expanding a crate, thus addressing FIXMEs left in https://github.com/rust-lang/rust/pull/82238, and making a step towards a proper support for crate-level macro attributes (cc #54726).
I haven't added token collection support for the whole crate in this PR, maybe later.
r? `@Aaron1011`
Noah Lev