1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ui/overloaded/overloaded-calls-nontuple.rs b/tests/ui/overloaded/overloaded-calls-nontuple.rs
new file mode 100644
index 000000000..32a3b93e0
--- /dev/null
+++ b/tests/ui/overloaded/overloaded-calls-nontuple.rs
@@ -0,0 +1,30 @@
+#![feature(fn_traits, unboxed_closures)]
+
+use std::ops::FnMut;
+
+struct S {
+    x: isize,
+    y: isize,
+}
+
+impl FnMut<isize> for S {
+    //~^ ERROR type parameter to bare `FnMut` trait must be a tuple
+    extern "rust-call" fn call_mut(&mut self, z: isize) -> isize {
+        //~^ ERROR functions with the "rust-call" ABI must take a single non-self tuple argument
+        self.x + self.y + z
+    }
+}
+
+impl FnOnce<isize> for S {
+    //~^ ERROR type parameter to bare `FnOnce` trait must be a tuple
+    type Output = isize;
+    extern "rust-call" fn call_once(mut self, z: isize) -> isize {
+        //~^ ERROR functions with the "rust-call" ABI must take a single non-self tuple argument
+        self.call_mut(z)
+    }
+}
+
+fn main() {
+    let mut s = S { x: 1, y: 2 };
+    drop(s(3))
+}