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22 lines
416 B
Rust
22 lines
416 B
Rust
// edition: 2021
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#![feature(async_fn_in_trait)]
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#![feature(return_position_impl_trait_in_trait)]
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#![allow(incomplete_features)]
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use std::future::Future;
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use std::pin::Pin;
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trait MyTrait {
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async fn foo(&self) -> i32;
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}
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impl MyTrait for i32 {
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fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>> {
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//~^ ERROR method `foo` should be async
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Box::pin(async { *self })
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}
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}
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fn main() {}
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