1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/span/missing-unit-argument.rs b/src/test/ui/span/missing-unit-argument.rs
new file mode 100644
index 000000000..5b9861da6
--- /dev/null
+++ b/src/test/ui/span/missing-unit-argument.rs
@@ -0,0 +1,17 @@
+fn foo(():(), ():()) {}
+fn bar(():()) {}
+
+struct S;
+impl S {
+    fn baz(self, (): ()) { }
+    fn generic<T>(self, _: T) { }
+}
+
+fn main() {
+    let _: Result<(), String> = Ok(); //~ ERROR this enum variant takes
+    foo(); //~ ERROR this function takes
+    foo(()); //~ ERROR this function takes
+    bar(); //~ ERROR this function takes
+    S.baz(); //~ ERROR this function takes
+    S.generic::<()>(); //~ ERROR this function takes
+}