1 files changed, 18 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-28828.rs b/src/test/ui/issues/issue-28828.rs
new file mode 100644
index 000000000..03968809e
--- /dev/null
+++ b/src/test/ui/issues/issue-28828.rs
@@ -0,0 +1,18 @@
+// run-pass
+pub trait Foo {
+    type Out;
+}
+
+impl Foo for () {
+    type Out = bool;
+}
+
+fn main() {
+    type Bool = <() as Foo>::Out;
+
+    let x: Bool = true;
+    assert!(x);
+
+    let y: Option<Bool> = None;
+    assert_eq!(y, None);
+}