| //@ run-rustfix | |
| //@ edition: 2021 | |
| #![allow(unused)] | |
| trait Foo { | |
| fn test() -> impl std::future::Future<Output = ()> + Send { async {} } | |
| fn test2() -> impl std::future::Future<Output = i32> + Send {async { 1 + 2 } } | |
| } | |
| fn bar<T: Foo>() { | |
| fn needs_send(_: impl Send) {} | |
| needs_send(T::test()); | |
| //~^ ERROR `impl Future<Output = ()>` cannot be sent between threads safely | |
| needs_send(T::test2()); | |
| //~^ ERROR `impl Future<Output = i32>` cannot be sent between threads safely | |
| } | |
| fn main() {} |