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Rollup merge of #121669 - nnethercote:count-stashed-errs-again, r=estebank

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Count stashed errors again

Stashed diagnostics are such a pain. Their "might be emitted, might not" semantics messes with lots of things.

#120828 and #121206 made some big changes to how they work, improving some things, but still leaving some problems, as seen by the issues caused by #121206. This PR aims to fix all of them by restricting them in a way that eliminates the "might be emitted, might not" semantics while still allowing 98% of their benefit. Details in the individual commit logs.

r? `@oli-obk`
This commit is contained in:
Guillaume Gomez 2024-02-29 17:08:38 +01:00 committed by GitHub
commit 7cfe7d6223
2 changed files with 17 additions and 0 deletions
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8
tests/ui/crashes/unreachable-array-or-slice.rs Normal file
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@ -0,0 +1,8 @@
struct Foo(isize, isize, isize, isize);
pub fn main() {
let Self::anything_here_kills_it(a, b, ..) = Foo(5, 5, 5, 5);
match [5, 5, 5, 5] {
[..] => { }
}
}

9
tests/ui/crashes/unreachable-array-or-slice.stderr Normal file
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@ -0,0 +1,9 @@
error[E0433]: failed to resolve: `Self` is only available in impls, traits, and type definitions
--> tests/ui/crashes/unreachable-array-or-slice.rs:4:9
|
LL | let Self::anything_here_kills_it(a, b, ..) = Foo(5, 5, 5, 5);
| ^^^^ `Self` is only available in impls, traits, and type definitions
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0433`.