From 868aa8974d87f0406871ed67b04082f6ab05b4b9 Mon Sep 17 00:00:00 2001
From: SNCPlay42 <SNCPlay42@gmail.com>
Date: Mon, 9 Nov 2020 15:43:33 +0000
Subject: [PATCH] add regression test for #78892

---
 .../issue-78892-substitution-in-statement-attr.rs  | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 src/test/ui/macros/issue-78892-substitution-in-statement-attr.rs

diff --git a/src/test/ui/macros/issue-78892-substitution-in-statement-attr.rs b/src/test/ui/macros/issue-78892-substitution-in-statement-attr.rs
new file mode 100644
index 0000000000000..9d1fae7a234fe
--- /dev/null
+++ b/src/test/ui/macros/issue-78892-substitution-in-statement-attr.rs
@@ -0,0 +1,14 @@
+// check-pass
+
+// regression test for #78892
+
+macro_rules! mac {
+    ($lint_name:ident) => {{
+        #[allow($lint_name)]
+        let _ = ();
+    }};
+}
+
+fn main() {
+    mac!(dead_code)
+}