rust/tests/ui/traits/issue-38604.rs
Taylor Cramer d00d4dfe0d Refactor dyn-compatibility error and suggestions
This CL makes a number of small changes to dyn compatibility errors:
- "object safety" has been renamed to "dyn-compatibility" throughout
- "Convert to enum" suggestions are no longer generated when there
  exists a type-generic impl of the trait or an impl for `dyn OtherTrait`
- Several error messages are reorganized for user readability

Additionally, the dyn compatibility error creation code has been
split out into functions.

cc #132713
cc #133267
2025-01-22 09:20:57 -08:00

17 lines
308 B
Rust

trait Q<T:?Sized> {}
trait Foo where u32: Q<Self> {
fn foo(&self);
}
impl Q<()> for u32 {}
impl Foo for () {
fn foo(&self) {
println!("foo!");
}
}
fn main() {
let _f: Box<dyn Foo> = //~ ERROR `Foo` is not dyn compatible
Box::new(()); //~ ERROR `Foo` is not dyn compatible
}