docs/test: add UI test and long-form error docs for `E0461`
Might take a couple of tries to pass CI. The UI test is x86-linux only; I'm not sure how to generalize it to other architectures.
r? ``@GuillaumeGomez``
Some `compare_method` tweaks
1. Make some of the comparison functions' names more regular
2. Reduce pub scope of some of the things in `compare_method`
~3. Remove some unnecessary opaque type handling code -- `InferCtxt` already is in a mode that doesn't define opaque types~
* moved to a different PR
4. Bubble up `ErrorGuaranteed` for region constraint errors in `compare_method` - Improves a redundant error message in one unit test.
5. Move the `compare_method` module to have a more general name, since it's more like `compare_impl_item` :)
6. Rename `collect_trait_impl_trait_tys`
Remove some totally duplicated files in `rustc_infer`
I have no idea why or how I duplicated these files from `compiler/rustc_infer/src/infer/error_reporting/note.rs`, but I did by accident, and nothing caught it 🤦
Implement allow-by-default `multiple_supertrait_upcastable` lint
The lint detects when an object-safe trait has multiple supertraits.
Enabled in libcore and liballoc as they are low-level enough that many embedded programs will use them.
r? `@nikomatsakis`
Account for `match` expr in single line
When encountering `match Some(42) { Some(x) => x, None => "" };`, output
```
error[E0308]: `match` arms have incompatible types
--> f53.rs:2:52
|
2 | let _ = match Some(42) { Some(x) => x, None => "" };
| -------------- - ^^ expected integer, found `&str`
| | |
| | this is found to be of type `{integer}`
| `match` arms have incompatible types
```
Always suggest as `MachineApplicable` in `recover_intersection_pat`
This resolves one FIXME in `recover_intersection_pat` by always applying `MachineApplicable` when suggesting, as `bindings_after_at` is now stable.
This also separates a test to apply `// run-rustfix`.
Signed-off-by: Yuki Okushi <jtitor@2k36.org>
Rollup of 4 pull requests
Successful merges:
- #105515 (Account for macros in const generics)
- #106146 (Readme: update section on how to run `x.py`)
- #106150 (Detect when method call on LHS might be shadowed)
- #106174 (Remove unused empty CSS rules in ayu theme)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Fix incorrect span when using byte-escaped rbrace
Fix#103826, a format args span issue introduced in #102214.
The current solution for tracking skipped characters made it so that certain situations were ambiguous enough that the original span couldn't be worked out later. This PR improves on the original solution by keeping track of groups of skipped characters using a map, and fixes the previous bug. See an example of this ambiguity in the [previous PR's discussion](https://github.com/rust-lang/rust/pull/102214#issuecomment-1258711015).
