1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/generic_duplicate_param_use7.rs b/src/test/ui/type-alias-impl-trait/generic_duplicate_param_use7.rs
new file mode 100644
index 000000000..feebf81ee
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/generic_duplicate_param_use7.rs
@@ -0,0 +1,24 @@
+// check-pass
+#![feature(type_alias_impl_trait)]
+
+use std::fmt::Debug;
+
+fn main() {}
+
+type Two<A: Debug, B> = impl Debug;
+
+fn two<T: Debug + Copy, U>(t: T, u: U) -> Two<T, U> {
+    (t, t)
+}
+
+fn three<T: Debug, U>(t: T, t2: T, u: U) -> Two<T, U> {
+    (t, t2)
+}
+
+fn four<T: Debug, U, V>(t: T, t2: T, u: U, v: V) -> Two<T, U> {
+    (t, t2)
+}
+
+fn five<X, Y: Debug>(x: X, y: Y, y2: Y) -> Two<Y, X> {
+    (y, y2)
+}