gcc/testsuite/rust/compile/torture/traits19.rs


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// { dg-additional-options "-w" }
trait Get {
    type Value;
    fn get(&self) -> &<Self as Get>::Value;
}

struct Struct {
    x: isize,
}

impl Get for Struct {
    type Value = isize;
    fn get(&self) -> &isize {
        &self.x
    }
}

trait Grab {
    type U;
    fn grab(&self) -> &<Self as Grab>::U;
}

impl<T: Get> Grab for T {
    type U = <T as Get>::Value;
    fn grab(&self) -> &<T as Get>::Value {
        self.get()
    }
}

fn main() {
    let s = Struct { x: 100 };
    let a = s.grab();
}