rust/tests/ui/traits/trait-upcasting/migrate-lint-deny-regions.rs
Oli Scherer 9a20cf1697 Revert "Auto merge of #118133 - Urgau:stabilize_trait_upcasting, r=WaffleLapkin"
This reverts commit 6d2b84b3ed7848fd91b8d6151d4451b3103ed816, reversing
changes made to 73bc12199ea8c7651ed98b069c0dd6b0bb5fabcf.
2024-01-22 14:24:31 +00:00

19 lines
398 B
Rust

#![deny(deref_into_dyn_supertrait)]
use std::ops::Deref;
trait Bar<'a> {}
trait Foo<'a>: Bar<'a> {}
impl<'a> Deref for dyn Foo<'a> {
//~^ ERROR this `Deref` implementation is covered by an implicit supertrait coercion
//~| WARN this will change its meaning in a future release!
type Target = dyn Bar<'a>;
fn deref(&self) -> &Self::Target {
todo!()
}
}
fn main() {}