1 files changed, 12 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-18809.rs b/tests/ui/issues/issue-18809.rs
new file mode 100644
index 000000000..cc5b4a64c
--- /dev/null
+++ b/tests/ui/issues/issue-18809.rs
@@ -0,0 +1,12 @@
+// check-pass
+trait Tup {
+    type T0;
+    type T1;
+}
+
+impl Tup for isize {
+    type T0 = f32;
+    type T1 = ();
+}
+
+fn main() {}