1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/impl-unused-tps-inherent.rs b/tests/ui/impl-unused-tps-inherent.rs
new file mode 100644
index 00000000000..83a228e551a
--- /dev/null
+++ b/tests/ui/impl-unused-tps-inherent.rs
@@ -0,0 +1,25 @@
+struct MyType;
+
+struct MyType1<T>(T);
+
+trait Bar {
+    type Out;
+}
+
+impl<T> MyType {
+    //~^ ERROR  the type parameter `T` is not constrained
+}
+
+impl<T> MyType1<T> {
+    // OK, T is used in `Foo<T>`.
+}
+
+impl<T,U> MyType1<T> {
+    //~^ ERROR  the type parameter `U` is not constrained
+}
+
+impl<T,U> MyType1<T> where T: Bar<Out=U> {
+    // OK, T is used in `Foo<T>`.
+}
+
+fn main() { }