[rustc.git] / tests / ui / async-await / in-trait / object-safety.rs

// edition:2021
// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty
// revisions: current next

#![feature(async_fn_in_trait)]
//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes

trait Foo {
    async fn foo(&self);
}

fn main() {
    let x: &dyn Foo = todo!();
    //~^ ERROR the trait `Foo` cannot be made into an object
}
Commit	Line	Data
487cf647	1	// edition:2021
353b0b11 FG	2	// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty
353b0b11 FG	3	// revisions: current next
487cf647 FG	4
	5	#![feature(async_fn_in_trait)]
	6	//~^ WARN the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
	7
	8	trait Foo {
	9	async fn foo(&self);
	10	}
	11
	12	fn main() {
	13	let x: &dyn Foo = todo!();
	14	//~^ ERROR the trait `Foo` cannot be made into an object
	15	}