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20 lines
513 B
Rust
20 lines
513 B
Rust
//@ run-rustfix
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//@ edition: 2021
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#![allow(unused)]
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trait Foo {
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fn test() -> impl std::future::Future<Output = ()> + Send { async {} }
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fn test2() -> impl std::future::Future<Output = i32> + Send {async { 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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