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Accept `TyCtxt` instead of `TyCtxtAt` in `Ty::is_*` functions
Functions in answer:
- `Ty::is_freeze`
- `Ty::is_sized`
- `Ty::is_unpin`
- `Ty::is_copy_modulo_regions`
This allows to remove a lot of useless `.at(DUMMY_SP)`, making the code a bit nicer :3
r? `@compiler-errors`
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spastorino noticed some silly expressions like `item_id.def_id.def_id`.
This commit renames several `def_id: OwnerId` fields as `owner_id`, so
those expressions become `item_id.owner_id.def_id`.
`item_id.owner_id.local_def_id` would be even clearer, but the use of
`def_id` for values of type `LocalDefId` is *very* widespread, so I left
that alone.
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Functions in answer:
- `Ty::is_freeze`
- `Ty::is_sized`
- `Ty::is_unpin`
- `Ty::is_copy_modulo_regions`
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And a couple of other naming tweaks
Related to https://github.com/rust-lang/rust/issues/48054
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Fix wrapped valid-range handling in ty_find_init_error
Rust's niche handling allows for wrapping valid ranges with end < start;
for instance, a valid range with start=43 and end=41 means a niche of
42. Most places in the compiler handle this correctly, but
`ty_find_init_error` assumed that `lo > 0` means the type cannot contain a
zero.
Fix it to handle wrapping ranges.
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Flatten diagnostic slug modules
This makes it easier to grep for the slugs in the code.
See https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Localization.20infra.20interferes.20with.20grepping.20for.20error for more discussion about it.
This was mostly done with a few regexes and a bunch of manual work. This also exposes a pretty annoying inconsistency for the extra labels. Some of the extra labels are defined as additional properties in the fluent message (which makes them not prefixed with the crate name) and some of them are new fluent messages themselves (which makes them prefixed with the crate name). I don't know whether we want to clean this up at some point but it's useful to know.
r? `@davidtwco`
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Rollup of 9 pull requests
Successful merges:
- #103123 (Introduce `subst_iter` and `subst_iter_copied` on `EarlyBinder` )
- #103328 (Do not suggest trivially false const predicates)
- #103354 (Escape string literals when fixing overlong char literal)
- #103355 (Handle return-position `impl Trait` in traits properly in `register_hidden_type`)
- #103368 (Delay ambiguity span bug in normalize query iff not rustdoc)
- #103388 (rustdoc: remove unused CSS class `.result-description`)
- #103399 (Change `unknown_lint` applicability to `MaybeIncorrect`)
- #103401 (Use functions for headings rustdoc GUI test)
- #103412 (Fix typo in docs of `String::leak`.)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Change `unknown_lint` applicability to `MaybeIncorrect`
This small PR changes the applicability of `unknown_lint` to `MaybeIncorrect`, because the suggested lint might not be the correct one.
Here is one example where the current applicability causes a problem. Clippy has a set of internal lints guarded by a feature called `internal`. If the feature is not enabled, then the internal lints are "unknown." In that case, running `cargo clippy --fix ...` on `clippy_utils` causes lines such as the followig
https://github.com/rust-lang/rust/blob/26c96e341639102afacbbcad0dc18ad0ac71ab18/src/tools/clippy/clippy_utils/src/paths.rs#L51-L52
to be changed to
```rust
#[expect(clippy::invalid_regex)] // internal lints do not know about all external crates
pub const FUTURES_IO_ASYNCREADEXT: [&str; 3] = ["futures_util", "io", "AsyncReadExt"];
```
which is not correct.
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Introduce `subst_iter` and `subst_iter_copied` on `EarlyBinder`
Makes working with bounds lists a bit easier, which I seem to do a lot.
Specifically, means that we don't need to do `.transpose_iter().map(|(pred, _)| *pred)` every time we want to iterate through an `EarlyBinder<&'tcx [(Predicate, Span)]>` (and even then, still have to call `subst` later), which was a very awkward idiom imo.
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Remove ParamEnv from uninhabited query
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Rust's niche handling allows for wrapping valid ranges with end < start;
for instance, a valid range with start=43 and end=41 means a niche of
42. Most places in the compiler handle this correctly, but
ty_find_init_error assumed that `lo > 0` means the type cannot contain a
zero.
Fix it to handle wrapping ranges.
Add a test to cover this case.
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Slightly tweak comments wrt `lint_overflowing_range_endpoint`
From the review: https://github.com/rust-lang/rust/pull/101986#discussion_r975610611
It _seemed_ that the lint was not emitted when the `if` check failed, but _actually_ this happens already in a special case and the lint is emitted outside of this function, if this function doesn't. I've cleared up the code/comments a bit, so it's more obvious :)
r? ```@estebank```
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Fixup a few tests needing asm support
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translation: doc comments with derives, subdiagnostic-less enum variants, more derive use
- Adds support for `doc` attributes in the diagnostic derives so that documentation comments don't result in the derive failing.
- Adds support for enum variants in the subdiagnostic derive to not actually correspond to an addition to a diagnostic.
- Made use of the derive in more places in the `rustc_ast_lowering`, `rustc_ast_passes`, `rustc_lint`, `rustc_session`, `rustc_infer` - taking advantage of recent additions like eager subdiagnostics, multispan suggestions, etc.
cc #100717
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Signed-off-by: David Wood <david.wood@huawei.com>
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r=RalfJung
Improve docs for `struct_lint_level` function.
r? ``@RalfJung``
Does this answer your questions?
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`AddToDiagnostic::add_to_diagnostic_with` is similar to the previous
`AddToDiagnostic::add_to_diagnostic` but takes a function that can be
used by the caller to modify diagnostic messages originating from the
subdiagnostic (such as performing translation eagerly).
`add_to_diagnostic` now just calls `add_to_diagnostic_with` with an
empty closure.
Signed-off-by: David Wood <david.wood@huawei.com>
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Rename `AssocItemKind::TyAlias` to `AssocItemKind::Type`
Thanks `@camsteffen` for catching this in ast too, cc https://github.com/rust-lang/rust/pull/102829#issuecomment-1272649247
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The loop could contain `break;` that won't work with an `if let`
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if the iterator is used after the loop, we need to use `.by_ref()`
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I refactored the code:
- Removed handling of methods, as it felt entirely unnecessary
- Removed clippy utils (obviously...)
- Used some shiny compiler features
(let-else is very handy for lints :eyes:)
- I also renamed the lint to `for_loop_over_fallibles` (note: no `s`).
I'm not sure what's the naming convention here, so maybe I'm wrong.
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make const_err a hard error
This lint has been deny-by-default with future incompat wording since [Rust 1.51](https://github.com/rust-lang/rust/pull/80394) and the stable release of this week starts showing it in cargo's future compat reports. I can't wait to finally get rid of at least some of the mess in our const-err-reporting-code. ;)
r? `@oli-obk`
Fixes https://github.com/rust-lang/rust/issues/71800
Fixes https://github.com/rust-lang/rust/issues/100114
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Remove `-Ztime`
Because it has a lot of overlap with `-Ztime-passes` but is generally less useful. Plus some related cleanups.
Best reviewed one commit at a time.
r? `@davidtwco`
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The compiler currently has `-Ztime` and `-Ztime-passes`. I've used
`-Ztime-passes` for years but only recently learned about `-Ztime`.
What's the difference? Let's look at the `-Zhelp` output:
```
-Z time=val -- measure time of rustc processes (default: no)
-Z time-passes=val -- measure time of each rustc pass (default: no)
```
The `-Ztime-passes` description is clear, but the `-Ztime` one is less so.
Sounds like it measures the time for the entire process?
No. The real difference is that `-Ztime-passes` prints out info about passes,
and `-Ztime` does the same, but only for a subset of those passes. More
specifically, there is a distinction in the profiling code between a "verbose
generic activity" and an "extra verbose generic activity". `-Ztime-passes`
prints both kinds, while `-Ztime` only prints the first one. (It took me
a close reading of the source code to determine this difference.)
In practice this distinction has low value. Perhaps in the past the "extra
verbose" output was more voluminous, but now that we only print stats for a
pass if it exceeds 5ms or alters the RSS, `-Ztime-passes` is less spammy. Also,
a lot of the "extra verbose" cases are for individual lint passes, and you need
to also use `-Zno-interleave-lints` to see those anyway.
Therefore, this commit removes `-Ztime` and the associated machinery. One thing
to note is that the existing "extra verbose" activities all have an extra
string argument, so the commit adds the ability to accept an extra argument to
the "verbose" activities.
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Lint against nested opaque types that don't satisfy associated type bounds
See the test failures for examples of places where this lint would fire.
r? `@oli-obk`
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