rust/tests/ui/impl-trait/in-trait/dyn-compatibility.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

21 lines
436 B
Rust

use std::fmt::Debug;
trait Foo {
fn baz(&self) -> impl Debug;
}
impl Foo for u32 {
fn baz(&self) -> impl Debug {
32
}
}
fn main() {
let i = Box::new(42_u32) as Box<dyn Foo>;
//~^ ERROR the trait `Foo` is not dyn compatible
//~| ERROR the trait `Foo` is not dyn compatible
let s = i.baz();
//~^ ERROR the trait `Foo` is not dyn compatible
//~| ERROR the trait `Foo` is not dyn compatible
}