21 lines
488 B
Rust
21 lines
488 B
Rust
// run-rustfix
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// edition: 2021
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#![feature(async_fn_in_trait, return_position_impl_trait_in_trait)]
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#![allow(unused)]
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trait Foo {
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async fn test() -> () {}
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async fn test2() -> i32 { 1 + 2 }
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}
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fn bar<T: Foo>() {
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fn needs_send(_: impl Send) {}
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needs_send(T::test());
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//~^ ERROR `impl Future<Output = ()>` cannot be sent between threads safely
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needs_send(T::test2());
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//~^ ERROR `impl Future<Output = i32>` cannot be sent between threads safely
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}
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fn main() {}
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