diff options
Diffstat (limited to 'tests/ui/async-await/in-trait/fn-not-async-err2.rs')
-rw-r--r-- | tests/ui/async-await/in-trait/fn-not-async-err2.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/async-await/in-trait/fn-not-async-err2.rs b/tests/ui/async-await/in-trait/fn-not-async-err2.rs new file mode 100644 index 000000000..2c4ed5535 --- /dev/null +++ b/tests/ui/async-await/in-trait/fn-not-async-err2.rs @@ -0,0 +1,19 @@ +// edition: 2021 + +#![feature(async_fn_in_trait)] +#![allow(incomplete_features)] + +use std::future::Future; + +trait MyTrait { + async fn foo(&self) -> i32; +} + +impl MyTrait for i32 { + fn foo(&self) -> impl Future<Output = i32> { + //~^ ERROR `impl Trait` only allowed in function and inherent method return types, not in `impl` method return [E0562] + async { *self } + } +} + +fn main() {} |