1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/issue-68368-non-defining-use.stderr b/src/test/ui/type-alias-impl-trait/issue-68368-non-defining-use.stderr
new file mode 100644
index 000000000..8059621b6
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-68368-non-defining-use.stderr
@@ -0,0 +1,14 @@
+error: non-defining opaque type use in defining scope
+  --> $DIR/issue-68368-non-defining-use.rs:9:29
+   |
+LL | fn f<'a>() -> Alias<'a, ()> {}
+   |                             ^^
+   |
+note: used non-generic type `()` for generic parameter
+  --> $DIR/issue-68368-non-defining-use.rs:7:16
+   |
+LL | type Alias<'a, U> = impl Trait<U>;
+   |                ^
+
+error: aborting due to previous error
+