rust/tests/ui/async-await/issue-63832-await-short-temporary-lifetime-1.rs

//@ check-pass
//@ edition:2018

struct Test(String);

impl Test {
    async fn borrow_async(&self) {}

    fn with(&mut self, s: &str) -> &mut Self {
        self.0 = s.into();
        self
    }
}

async fn test() {
    Test("".to_string()).with("123").borrow_async().await;
}

fn main() { }
[AUTO-GENERATED] Migrate ui tests from `//` to `//@` directives 2024-02-16 20:02:50 +00:00			`//@ check-pass`
			`//@ edition:2018`
lowering: extend temporary lifetimes around await This commit changes the HIR lowering around `await` so that temporary lifetimes are extended. Previously, await was lowered as: ```rust { let mut pinned = future; loop { match ::std::future::poll_with_tls_context(unsafe { <::std::pin::Pin>::new_unchecked(&mut pinned) }) { ::std::task::Poll::Ready(result) => break result, ::std::task::Poll::Pending => {} } yield (); } } ``` With this commit, await is lowered as: ```rust match future { mut pinned => loop { match ::std::future::poll_with_tls_context(unsafe { <::std::pin::Pin>::new_unchecked(&mut pinned) }) { ::std::task::Poll::Ready(result) => break result, ::std::task::Poll::Pending => {} } yield (); } } ``` However, this change has the following side-effects: - All temporaries in future will be considered to live across a yield for the purpose of auto-traits. - Borrowed temporaries in future are likely to be considered to be live across the yield for the purpose of the generator transform. Signed-off-by: David Wood <david@davidtw.co> 2019-09-08 20:22:51 +00:00
			`struct Test(String);`

			`impl Test {`
			`async fn borrow_async(&self) {}`

			`fn with(&mut self, s: &str) -> &mut Self {`
			`self.0 = s.into();`
			`self`
			`}`
			`}`

			`async fn test() {`
			`Test("".to_string()).with("123").borrow_async().await;`
			`}`

			`fn main() { }`