1 files changed, 9 insertions, 0 deletions
diff --git a/tests/ui/lint/unused/concat-in-crate-name-issue-137687.rs b/tests/ui/lint/unused/concat-in-crate-name-issue-137687.rs
new file mode 100644
index 00000000000..37fbf93ffa1
--- /dev/null
+++ b/tests/ui/lint/unused/concat-in-crate-name-issue-137687.rs
@@ -0,0 +1,9 @@
+#![deny(unused)]
+
+#[crate_name = concat !()]
+//~^ ERROR crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]
+macro_rules! a {
+    //~^ ERROR unused macro definition
+    () => {};
+}
+fn main() {}