1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/ui/macros/issue-40770.rs b/src/test/ui/macros/issue-40770.rs
new file mode 100644
index 000000000..c9713c157
--- /dev/null
+++ b/src/test/ui/macros/issue-40770.rs
@@ -0,0 +1,11 @@
+// run-pass
+#![allow(unused_macros)]
+macro_rules! m {
+    ($e:expr) => {
+        macro_rules! n { () => { $e } }
+    }
+}
+
+fn main() {
+    m!(foo!());
+}