My type ascription
Oh rip it out
Ah
If you think we live too much then
You can sacrifice diagnostics
Don't mix your garbage
Into my syntax
So many weird hacks keep diagnostics alive
Yet I don't even step outside
So many bad diagnostics keep tyasc alive
Yet tyasc doesn't even bother to survive!
Close parentheses for `offset_of` in AST pretty printing
HIR pretty printing already handles it correctly.
This will conflict with #110694 but it seems like that PR is gonna take bit more time.
Ping Nadrieril when changing exhaustiveness checking
Hi!
I don't know what the procedure is but I'd quite like to be pinged when people try to change the exhaustiveness code. It's a tricky piece of code and I'm the de facto expert on it; I'd like to be available to provide feedback to contributors who wish to change it. I occasionally look through the git history and open PRs but a triagebot ping would be much more convenient.
The message says "might have" because `check_match.rs` contains a little bit of exhaustiveness logic and a lot of other match-related checks, so this ping will have false positives.
Test precise capture with a multi-variant enum and exhaustive patterns
Add test checking that it is possible to capture fields of a multi-variant enum, when remaining variants are visibly uninhabited (under the `exhaustive_patterns` feature gate).
Remove wrong assertion in match checking.
This assertions is completely misguided, introduced by https://github.com/rust-lang/rust/pull/108504. The responsible PR is on beta, nominating for backport.
Instead of checking that this is not a `&&`, it would make sense to check that neither arms of that `&&` is a `let`. This seems like a lot of code for unclear benefit.
r? `@saethlin`
Tweak await span to not contain dot
Fixes a discrepancy between method calls and await expressions where the latter are desugared to have a span that *contains* the dot (i.e. `.await`) but method call identifiers don't contain the dot. This leads to weird suggestions suggestions in borrowck -- see linked issue.
Fixes#110761
This mostly touches a bunch of tests to tighten their `await` span.
Previously, when borrowck failed it would taint all promoteds within the MIR
body. An attempt to evaluated the promoteds would subsequently fail with
spurious "note: erroneous constant used". For example:
```console
...
note: erroneous constant used
--> tests/ui/borrowck/tainted-promoteds.rs:7:9
|
7 | a = &0 * &1 * &2 * &3;
| ^^
note: erroneous constant used
--> tests/ui/borrowck/tainted-promoteds.rs:7:14
|
7 | a = &0 * &1 * &2 * &3;
| ^^
note: erroneous constant used
--> tests/ui/borrowck/tainted-promoteds.rs:7:19
|
7 | a = &0 * &1 * &2 * &3;
| ^^
note: erroneous constant used
--> tests/ui/borrowck/tainted-promoteds.rs:7:24
|
7 | a = &0 * &1 * &2 * &3;
| ^^
```
Borrowck failure doesn't indicate that there is anything wrong with
promoteds. Leave them untainted.
Parallelize initial Rust download in bootstrap
Parallelize the initial download of Rust in `bootstrap.py`
`time ./x.py --help` after `rm -r build`
Before: 33s
After: 27s
Add test checking that it is possible to capture fields of a
multi-variant enum, when remaining variants are visibly uninhabited
(under the `exhaustive_patterns` feature gate).
bootstrap: Fix compile error: unused-mut
Compile errors:
```
Compiling bootstrap v0.0.0 (/home/hev/rust/rust/src/bootstrap)
error: variable does not need to be mutable
--> config.rs:1312:17
|
1312 | let mut build_target = config
| ----^^^^^^^^^^^^
| |
| help: remove this `mut`
|
= note: `-D unused-mut` implied by `-D warnings`
error: could not compile `bootstrap` (lib) due to previous error
```
rustdoc: catch and don't blow up on impl Trait cycles
Fixes#110629
An odd feature of Rust is that `Foo` is invalid, but `Bar` is okay:
type Foo<'a, 'b> = Box<dyn PartialEq<Foo<'a, 'b>>>;
type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>>;
To get it right, track every time rustdoc descends into a type alias, so if it shows up twice, it can be write the path instead of infinitely expanding it.
