1 files changed, 9 insertions, 0 deletions
diff --git a/tests/ui/resolve/issue-3021-c.rs b/tests/ui/resolve/issue-3021-c.rs
new file mode 100644
index 000000000..94ed1fdf7
--- /dev/null
+++ b/tests/ui/resolve/issue-3021-c.rs
@@ -0,0 +1,9 @@
+fn siphash<T>() {
+
+    trait U {
+        fn g(&self, x: T) -> T;  //~ ERROR can't use generic parameters from outer function
+        //~^ ERROR can't use generic parameters from outer function
+    }
+}
+
+fn main() {}