diff options
Diffstat (limited to 'tests/ui/generic-associated-types/issue-88287.rs')
-rw-r--r-- | tests/ui/generic-associated-types/issue-88287.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/ui/generic-associated-types/issue-88287.rs b/tests/ui/generic-associated-types/issue-88287.rs new file mode 100644 index 000000000..82188493d --- /dev/null +++ b/tests/ui/generic-associated-types/issue-88287.rs @@ -0,0 +1,39 @@ +// edition:2018 + +#![feature(type_alias_impl_trait)] + +use std::future::Future; + +trait SearchableResource<Criteria> { + type SearchResult; +} + +trait SearchableResourceExt<Criteria>: SearchableResource<Criteria> { + type Future<'f, A: 'f + ?Sized, B: 'f>: Future<Output = Result<Vec<A::SearchResult>, ()>> + 'f + where + A: SearchableResource<B>, + Self: 'f; + + fn search<'c>(&'c self, client: &'c ()) -> Self::Future<'c, Self, Criteria>; +} + +type SearchFutureTy<'f, A, B: 'f> +where + A: SearchableResource<B> + ?Sized + 'f, += impl Future<Output = Result<Vec<A::SearchResult>, ()>> + 'f; +impl<T, Criteria> SearchableResourceExt<Criteria> for T +where + T: SearchableResource<Criteria>, +{ + type Future<'f, A, B: 'f> = SearchFutureTy<'f, A, B> + where + A: SearchableResource<B> + ?Sized + 'f, + Self: 'f; + + fn search<'c>(&'c self, _client: &'c ()) -> Self::Future<'c, Self, Criteria> { + async move { todo!() } + //~^ ERROR: the size for values of type `A` cannot be known at compilation time + } +} + +fn main() {} |