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// Output = String caused an ICE whereas Output = &'static str compiled successfully.
// Broken MIR: generator contains type std::string::String in MIR,
// but typeck only knows about {<S as T>::Future, ()}
// check-pass
// edition:2018
use std::future::Future;
pub trait T {
type Future: Future<Output = String>;
fn bar() -> Self::Future;
}
pub async fn foo<S>() where S: T {
S::bar().await;
S::bar().await;
}
pub fn main() {}
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