1 files changed, 75 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/extra_unused_type_parameters.stderr b/src/tools/clippy/tests/ui/extra_unused_type_parameters.stderr
new file mode 100644
index 000000000..86c88fc9b
--- /dev/null
+++ b/src/tools/clippy/tests/ui/extra_unused_type_parameters.stderr
@@ -0,0 +1,75 @@
+error: type parameter goes unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:4:13
+   |
+LL | fn unused_ty<T>(x: u8) {
+   |             ^^^
+   |
+   = help: consider removing the parameter
+   = note: `-D clippy::extra-unused-type-parameters` implied by `-D warnings`
+
+error: type parameters go unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:8:16
+   |
+LL | fn unused_multi<T, U>(x: u8) {
+   |                ^^^^^^
+   |
+   = help: consider removing the parameters
+
+error: type parameter goes unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:12:23
+   |
+LL | fn unused_with_lt<'a, T>(x: &'a u8) {
+   |                       ^
+   |
+   = help: consider removing the parameter
+
+error: type parameter goes unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:24:19
+   |
+LL | fn unused_bounded<T: Default, U>(x: U) {
+   |                   ^^^^^^^^^^^
+   |
+   = help: consider removing the parameter
+
+error: type parameter goes unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:28:24
+   |
+LL | fn unused_where_clause<T, U>(x: U)
+   |                        ^^
+   |
+   = help: consider removing the parameter
+
+error: type parameters go unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:35:16
+   |
+LL | fn some_unused<A, B, C, D: Iterator<Item = (B, C)>, E>(b: B, c: C) {
+   |                ^^       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^
+   |
+   = help: consider removing the parameters
+
+error: type parameter goes unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:60:22
+   |
+LL |     fn unused_ty_impl<T>(&self) {
+   |                      ^^^
+   |
+   = help: consider removing the parameter
+
+error: type parameters go unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:82:17
+   |
+LL | fn unused_opaque<A, B>(dummy: impl Default) {
+   |                 ^^^^^^
+   |
+   = help: consider removing the parameters
+
+error: type parameter goes unused in function definition
+  --> $DIR/extra_unused_type_parameters.rs:95:58
+   |
+LL |     fn unused_with_priv_trait_bound<T: private::Private, U>() {
+   |                                                          ^
+   |
+   = help: consider removing the parameter
+
+error: aborting due to 9 previous errors
+