From 88f2a702c7c46274331f5be08f4dde692dbf1913 Mon Sep 17 00:00:00 2001
From: hyd-dev <yd-huang@outlook.com>
Date: Thu, 11 Mar 2021 19:39:26 +0800
Subject: [PATCH] Add regression test for
 https://github.com/rust-lang/rust/issues/81555

---
 src/test/ui/proc-macro/issue-81555.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/test/ui/proc-macro/issue-81555.rs

diff --git a/src/test/ui/proc-macro/issue-81555.rs b/src/test/ui/proc-macro/issue-81555.rs
new file mode 100644
index 000000000000..693f1f7dc39f
--- /dev/null
+++ b/src/test/ui/proc-macro/issue-81555.rs
@@ -0,0 +1,15 @@
+// check-pass
+// aux-build:test-macros.rs
+#![feature(stmt_expr_attributes, proc_macro_hygiene)]
+
+extern crate test_macros;
+
+use test_macros::identity_attr;
+
+#[identity_attr]
+fn main() {
+    let _x;
+    let y = ();
+    #[identity_attr]
+    _x = y;
+}