rust/tests/ui/borrowck/issue-103095.rs
2024-02-16 20:02:50 +00:00

31 lines
572 B
Rust

//@ check-pass
trait FnOnceForGenericRef<T>: FnOnce(&T) -> Self::FnOutput {
type FnOutput;
}
impl<T, R, F: FnOnce(&T) -> R> FnOnceForGenericRef<T> for F {
type FnOutput = R;
}
struct Data<T, D: FnOnceForGenericRef<T>> {
value: Option<T>,
output: Option<D::FnOutput>,
}
impl<T, D: FnOnceForGenericRef<T>> Data<T, D> {
fn new(value: T, f: D) -> Self {
let output = f(&value);
Self {
value: Some(value),
output: Some(output),
}
}
}
fn test() {
Data::new(String::new(), |_| {});
}
fn main() {}