1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/lint/dead-code/in-closure.rs b/tests/ui/lint/dead-code/in-closure.rs
new file mode 100644
index 000000000..c55634405
--- /dev/null
+++ b/tests/ui/lint/dead-code/in-closure.rs
@@ -0,0 +1,16 @@
+// edition: 2021
+
+#![deny(dead_code)]
+
+pub fn foo() {
+    let closure = || {
+        fn a() {}   //~ ERROR function `a` is never used
+    };
+    closure()
+}
+
+pub async fn async_foo() {
+    const A: usize = 1; //~ ERROR constant `A` is never used
+}
+
+fn main() {}