1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/nested-return-type.rs b/tests/ui/impl-trait/nested-return-type.rs
new file mode 100644
index 000000000..7d7a084b8
--- /dev/null
+++ b/tests/ui/impl-trait/nested-return-type.rs
@@ -0,0 +1,16 @@
+// Check that nested impl Trait items work in functions with generic parameters.
+// check-pass
+
+trait Captures<'a> {}
+
+impl<T> Captures<'_> for T {}
+
+fn nested_assoc_type<'a: 'a, T>() -> impl Iterator<Item = impl Sized> {
+    [1].iter()
+}
+
+fn nested_assoc_lifetime<'a: 'a, T>() -> impl Iterator<Item = impl Captures<'a>> {
+    [1].iter()
+}
+
+fn main() {}