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trait Fun {
type F<'a>: ?Sized;
fn identity<'a>(t: &'a Self::F<'a>) -> &'a Self::F<'a> { t }
}
impl <T> Fun for T {
type F<'a> = [u8];
}
fn bug<'a, T: ?Sized + Fun<F<'a> = [u8]>>(_ : Box<T>) -> &'static T::F<'a> {
let a = [0; 1];
let _x = T::identity(&a);
//~^ ERROR: `a` does not live long enough
todo!()
}
fn main() {
let x = 10;
bug(Box::new(x));
}
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