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| author | Jubilee <46493976+workingjubilee@users.noreply.github.com> | 2024-06-12 03:57:26 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-12 03:57:26 -0700 |
| commit | 0a5284917b26496f608bff8737f32fa1b502b3d5 (patch) | |
| tree | 6e8f2b82f04dbb135a90778f6c2000b4e27e2923 | |
| parent | 6f4f405c396159a33bf98f2e7ccf638d49542e9d (diff) | |
| parent | bbc55091bb05c11d6770de3e396d81b6221de8d0 (diff) | |
| download | rust-0a5284917b26496f608bff8737f32fa1b502b3d5.tar.gz rust-0a5284917b26496f608bff8737f32fa1b502b3d5.zip | |
Rollup merge of #126314 - lcnr:fix-relnotes, r=pietroalbini
fix RELEASES: we do not support upcasting to auto traits
#119338 does not actually support casts from `dyn Trait` to `dyn Auto`, only from `dyn Trait` to `dyn Trait + Auto`. The following test does not compile
```rust
trait Trait: Send {}
impl<T: Send> Trait for T {}
fn foo() {
let x: &i32 = &1;
let y = x as &dyn Trait as &dyn Send;
}
```
it actually also doesn't compile with `feature(trait_upcasting)`, opened #126313 for that
r? `@Mark-Simulacrum` `@cuviper`
| -rw-r--r-- | RELEASES.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/RELEASES.md b/RELEASES.md index c1311ab14c5..2297924c7f3 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -147,7 +147,7 @@ Language - [Split `refining_impl_trait` lint into `_reachable`, `_internal` variants](https://github.com/rust-lang/rust/pull/121720/) - [Remove unnecessary type inference when using associated types inside of higher ranked `where`-bounds](https://github.com/rust-lang/rust/pull/119849) - [Weaken eager detection of cyclic types during type inference](https://github.com/rust-lang/rust/pull/119989) -- [`trait Trait: Auto {}`: allow upcasting from `dyn Trait` to `dyn Auto`](https://github.com/rust-lang/rust/pull/119338) +- [`trait Trait: Auto {}`: allow upcasting from `dyn Trait` to `dyn Trait + Auto`](https://github.com/rust-lang/rust/pull/119338) <a id="1.78.0-Compiler"></a> |