rust/tests/ui/async-await/issues/issue-63388-1.rs

//@ edition:2018

struct Xyz {
    a: u64,
}

trait Foo {}

impl Xyz {
    async fn do_sth<'a>(
        &'a self, foo: &dyn Foo
    ) -> &dyn Foo  //~ WARNING elided lifetime has a name
    {
        foo
        //~^ ERROR explicit lifetime required in the type of `foo` [E0621]
    }
}

fn main() {}
revamp how we handle elision in async fn We now always make fresh lifetimne parameters for all elided lifetimes, whether they are in the inputs or outputs. But then we generate `'_` in the case of elided lifetimes from the outputs. Example: ```rust async fn foo<'a>(x: &'a u32) -> &u32 { .. } ``` becomes ```rust type Foo<'a, 'b> = impl Future<Output = &'b u32>; fn foo<'a>(x: &'a u32) -> Foo<'a, '_> ``` 2019-08-12 17:15:33 -04:00			`//@ edition:2018`

			`struct Xyz {`
			`a: u64,`
			`}`

			`trait Foo {}`

			`impl Xyz {`
			`async fn do_sth<'a>(`
			`&'a self, foo: &dyn Foo`
elided_named_lifetimes: bless & add tests 2024-08-31 15:31:31 +03:00			`) -> &dyn Foo //~ WARNING elided lifetime has a name`
revamp how we handle elision in async fn We now always make fresh lifetimne parameters for all elided lifetimes, whether they are in the inputs or outputs. But then we generate `'_` in the case of elided lifetimes from the outputs. Example: ```rust async fn foo<'a>(x: &'a u32) -> &u32 { .. } ``` becomes ```rust type Foo<'a, 'b> = impl Future<Output = &'b u32>; fn foo<'a>(x: &'a u32) -> Foo<'a, '_> ``` 2019-08-12 17:15:33 -04:00			`{`
Use revisions for NLL in async-await 2022-05-21 15:46:25 -04:00			`foo`
`best_blame_constraint`: avoid blaming constraints from MIR generated by desugaring 2024-12-13 08:04:15 -08:00			//~^ ERROR explicit lifetime required in the type of `foo` [E0621]
revamp how we handle elision in async fn We now always make fresh lifetimne parameters for all elided lifetimes, whether they are in the inputs or outputs. But then we generate `'_` in the case of elided lifetimes from the outputs. Example: ```rust async fn foo<'a>(x: &'a u32) -> &u32 { .. } ``` becomes ```rust type Foo<'a, 'b> = impl Future<Output = &'b u32>; fn foo<'a>(x: &'a u32) -> Foo<'a, '_> ``` 2019-08-12 17:15:33 -04:00			`}`
			`}`

			`fn main() {}`