1 files changed, 9 insertions, 0 deletions
diff --git a/tests/ui/box/unit/unique-fn-ret.rs b/tests/ui/box/unit/unique-fn-ret.rs
new file mode 100644
index 000000000..773a9bce1
--- /dev/null
+++ b/tests/ui/box/unit/unique-fn-ret.rs
@@ -0,0 +1,9 @@
+// run-pass
+
+fn f() -> Box<isize> {
+    Box::new(100)
+}
+
+pub fn main() {
+    assert_eq!(f(), Box::new(100));
+}