rust/tests/ui/const-generics/generic_const_exprs/dyn-compatibility-err-ret.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

22 lines
414 B
Rust

#![feature(generic_const_exprs)]
#![allow(incomplete_features)]
const fn bar<T: ?Sized>() -> usize { 7 }
trait Foo {
fn test(&self) -> [u8; bar::<Self>()];
}
impl Foo for () {
fn test(&self) -> [u8; bar::<Self>()] {
[0; bar::<Self>()]
}
}
fn use_dyn(v: &dyn Foo) { //~ERROR the trait `Foo` is not dyn compatible
v.test(); //~ERROR the trait `Foo` is not dyn compatible
}
fn main() {}