diff options
Diffstat (limited to 'src/test/ui/type-alias-impl-trait/type-alias-nested-impl-trait.rs')
-rw-r--r-- | src/test/ui/type-alias-impl-trait/type-alias-nested-impl-trait.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/type-alias-nested-impl-trait.rs b/src/test/ui/type-alias-impl-trait/type-alias-nested-impl-trait.rs new file mode 100644 index 000000000..fd954801d --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/type-alias-nested-impl-trait.rs @@ -0,0 +1,14 @@ +// run-pass + +#![feature(type_alias_impl_trait)] + +use std::iter::{once, Chain}; + +type I<A> = Chain<A, impl Iterator<Item = &'static str>>; +fn test2<A: Iterator<Item = &'static str>>(x: A) -> I<A> { + x.chain(once("5")) +} + +fn main() { + assert_eq!(vec!["1", "3", "5"], test2(["1", "3"].iter().cloned()).collect::<Vec<_>>()); +} |