1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/rpit/non-defining-use.stderr b/tests/ui/impl-trait/rpit/non-defining-use.stderr
new file mode 100644
index 000000000..19987d476
--- /dev/null
+++ b/tests/ui/impl-trait/rpit/non-defining-use.stderr
@@ -0,0 +1,31 @@
+error[E0792]: expected generic type parameter, found `u8`
+  --> $DIR/non-defining-use.rs:4:12
+   |
+LL | fn foo<T>() -> impl Sized {
+   |        - this generic parameter must be used with a generic type parameter
+LL |     let _: () = foo::<u8>();
+   |            ^^
+
+error[E0792]: expected generic type parameter, found `u8`
+  --> $DIR/non-defining-use.rs:8:12
+   |
+LL | fn bar<T>(val: T) -> impl Sized {
+   |        - this generic parameter must be used with a generic type parameter
+LL |     let _: u8 = bar(0u8);
+   |            ^^
+
+error: concrete type differs from previous defining opaque type use
+  --> $DIR/non-defining-use.rs:8:17
+   |
+LL |     let _: u8 = bar(0u8);
+   |                 ^^^^^^^^ expected `T`, got `u8`
+   |
+note: previous use here
+  --> $DIR/non-defining-use.rs:7:22
+   |
+LL | fn bar<T>(val: T) -> impl Sized {
+   |                      ^^^^^^^^^^
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0792`.