1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/box/unit/unique-containing-tag.rs b/tests/ui/box/unit/unique-containing-tag.rs
new file mode 100644
index 000000000..6c31ae99b
--- /dev/null
+++ b/tests/ui/box/unit/unique-containing-tag.rs
@@ -0,0 +1,25 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(non_camel_case_types)]
+
+// pretty-expanded FIXME #23616
+
+pub fn main() {
+    enum t { t1(isize), t2(isize), }
+
+    let _x: Box<_> = Box::new(t::t1(10));
+
+    /*alt *x {
+      t1(a) {
+        assert_eq!(a, 10);
+      }
+      _ { panic!(); }
+    }*/
+
+    /*alt x {
+      Box::new(t1(a) {
+        assert_eq!(a, 10);
+      })
+      _ { panic!(); }
+    }*/
+}