rust/tests/ui/suggestions/impl-on-dyn-trait-with-implicit-static-bound.rs

// FIXME(#96332): We should be able to suggest a fix and automatically fix.

#![allow(dead_code)]

mod foo {
    trait OtherTrait<'a> {}
    impl<'a> OtherTrait<'a> for &'a () {}

    trait ObjectTrait<T> {}
    trait MyTrait<T> {
        fn use_self<K>(&self) -> &();
    }
    trait Irrelevant {}

    impl<T> MyTrait<T> for dyn ObjectTrait<T> {
        fn use_self<K>(&self) -> &() { panic!() }
    }
    impl<T> Irrelevant for dyn ObjectTrait<T> {}

    fn use_it<'a, T>(val: &'a dyn ObjectTrait<T>) -> impl OtherTrait<'a> + 'a {
        val.use_self::<T>() //~ ERROR borrowed data escapes
    }
}

mod bar {
    trait ObjectTrait {}
    trait MyTrait {
        fn use_self(&self) -> &();
    }
    trait Irrelevant {}

    impl MyTrait for dyn ObjectTrait {
        fn use_self(&self) -> &() { panic!() }
    }
    impl Irrelevant for dyn ObjectTrait {}

    fn use_it<'a>(val: &'a dyn ObjectTrait) -> &'a () {
        val.use_self()
    }
}

mod baz {
    trait ObjectTrait {}
    trait MyTrait {
        fn use_self(&self) -> &();
    }
    trait Irrelevant {}

    impl MyTrait for Box<dyn ObjectTrait> {
        fn use_self(&self) -> &() { panic!() }
    }
    impl Irrelevant for Box<dyn ObjectTrait> {}

    fn use_it<'a>(val: &'a Box<dyn ObjectTrait + 'a>) -> &'a () {
        val.use_self()
    }
}

mod bat {
    trait OtherTrait<'a> {}
    impl<'a> OtherTrait<'a> for &'a () {}

    trait ObjectTrait {}

    impl dyn ObjectTrait {
        fn use_self(&self) -> &() { panic!() }
    }

    fn use_it<'a>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> + 'a {
        val.use_self()
        //~^ ERROR borrowed data escapes
    }
}

mod ban {
    trait OtherTrait<'a> {}
    impl<'a> OtherTrait<'a> for &'a () {}

    trait ObjectTrait {}
    trait MyTrait {
        fn use_self(&self) -> &() { panic!() }
    }
    trait Irrelevant {
        fn use_self(&self) -> &() { panic!() }
    }

    impl MyTrait for dyn ObjectTrait {}

    fn use_it<'a>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> {
        val.use_self() //~ ERROR borrowed data escapes
    }
}

mod bal {
    trait OtherTrait<'a> {}
    impl<'a> OtherTrait<'a> for &'a () {}

    trait ObjectTrait {}
    trait MyTrait {
        fn use_self(&self) -> &() { panic!() }
    }
    trait Irrelevant {
        fn use_self(&self) -> &() { panic!() }
    }

    impl MyTrait for dyn ObjectTrait {}
    impl Irrelevant for dyn ObjectTrait {}

    fn use_it<'a>(val: &'a dyn ObjectTrait) -> impl OtherTrait<'a> + 'a {
        MyTrait::use_self(val) //~ ERROR borrowed data escapes
    }
}

fn main() {}