From 3b9e5dfda565224e6f007f379ca1cea4623422d9 Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Wed, 25 Sep 2019 11:06:52 +0700
Subject: [PATCH] Add regression test for macro expansion

---
 tests/ui/toplevel_ref_arg.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/ui/toplevel_ref_arg.rs b/tests/ui/toplevel_ref_arg.rs
index 7d5eaa940..e11c40966 100644
--- a/tests/ui/toplevel_ref_arg.rs
+++ b/tests/ui/toplevel_ref_arg.rs
@@ -19,6 +19,8 @@ fn main() {
     let (ref x, _) = (1, 2); // ok, not top level
     println!("The answer is {}.", x);
 
+    let ref x = vec![1, 2, 3];
+
     // Make sure that allowing the lint works
     #[allow(clippy::toplevel_ref_arg)]
     let ref mut x = 1_234_543;