diff options
Diffstat (limited to 'tests/ui/impl-trait/async_scope_creep.rs')
-rw-r--r-- | tests/ui/impl-trait/async_scope_creep.rs | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/async_scope_creep.rs b/tests/ui/impl-trait/async_scope_creep.rs new file mode 100644 index 000000000..7a9d64d33 --- /dev/null +++ b/tests/ui/impl-trait/async_scope_creep.rs @@ -0,0 +1,28 @@ +#![feature(type_alias_impl_trait)] +// edition:2021 +// check-pass + +struct Pending {} + +struct CantOpen {} + +trait AsyncRead {} + +impl AsyncRead for i32 {} + +type PendingReader<'a> = impl AsyncRead + 'a; + +type OpeningReadFuture<'a> = + impl std::future::Future<Output = Result<PendingReader<'a>, CantOpen>>; + +impl Pending { + async fn read(&mut self) -> Result<impl AsyncRead + '_, CantOpen> { + Ok(42) + } + + fn read_fut(&mut self) -> OpeningReadFuture<'_> { + self.read() + } +} + +fn main() {} |