1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-call-sugar-autoderef.rs b/src/test/ui/unboxed-closures/unboxed-closures-call-sugar-autoderef.rs
new file mode 100644
index 000000000..9b8a3f409
--- /dev/null
+++ b/src/test/ui/unboxed-closures/unboxed-closures-call-sugar-autoderef.rs
@@ -0,0 +1,15 @@
+// run-pass
+// Test that the call operator autoderefs when calling a bounded type parameter.
+
+use std::ops::FnMut;
+
+fn call_with_2<F>(x: &mut F) -> isize
+    where F : FnMut(isize) -> isize
+{
+    x(2) // look ma, no `*`
+}
+
+pub fn main() {
+    let z = call_with_2(&mut |x| x - 22);
+    assert_eq!(z, -20);
+}