From 2e789b9f0dd4d288e09881c1152f30a9fb456f75 Mon Sep 17 00:00:00 2001
From: Tyler Mandry <tmandry@gmail.com>
Date: Sun, 5 May 2019 17:23:47 -0700
Subject: [PATCH] Add test for #59972

---
 src/test/run-pass/generator/issue-59972.rs | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/test/run-pass/generator/issue-59972.rs

diff --git a/src/test/run-pass/generator/issue-59972.rs b/src/test/run-pass/generator/issue-59972.rs
new file mode 100644
index 00000000000..995da4fb3ff
--- /dev/null
+++ b/src/test/run-pass/generator/issue-59972.rs
@@ -0,0 +1,23 @@
+// compile-flags: --edition=2018
+
+#![feature(async_await, await_macro)]
+
+pub enum Uninhabited { }
+
+fn uninhabited_async() -> Uninhabited {
+    unreachable!()
+}
+
+async fn noop() { }
+
+#[allow(unused)]
+async fn contains_never() {
+    let error = uninhabited_async();
+    await!(noop());
+    let error2 = error;
+}
+
+#[allow(unused_must_use)]
+fn main() {
+    contains_never();
+}