1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/lint/must_not_suspend/gated.rs b/tests/ui/lint/must_not_suspend/gated.rs
new file mode 100644
index 000000000..b73a76555
--- /dev/null
+++ b/tests/ui/lint/must_not_suspend/gated.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+// edition:2018
+#![deny(must_not_suspend)]
+//~^ WARNING unknown lint: `must_not_suspend`
+//~| WARNING unknown lint: `must_not_suspend`
+//~| WARNING unknown lint: `must_not_suspend`
+
+async fn other() {}
+
+pub async fn uhoh(m: std::sync::Mutex<()>) {
+    let _guard = m.lock().unwrap();
+    other().await;
+}
+
+fn main() {
+}