From eb14dd863a0d8af603c6783b10efff8454944c15 Mon Sep 17 00:00:00 2001
From: Frank Steffahn <frank.steffahn@stu.uni-kiel.de>
Date: Wed, 15 Jun 2022 03:12:07 +0200
Subject: [PATCH] Test NLL fix of bad lifetime inference for reference captured
 in closure.

---
 library/std/src/thread/tests.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/library/std/src/thread/tests.rs b/library/std/src/thread/tests.rs
index 5b8309cf5d273..ec68b52918802 100644
--- a/library/std/src/thread/tests.rs
+++ b/library/std/src/thread/tests.rs
@@ -316,3 +316,16 @@ fn test_scoped_threads_drop_result_before_join() {
     });
     assert!(actually_finished.load(Ordering::Relaxed));
 }
+
+#[test]
+fn test_scoped_threads_nll() {
+    // this is mostly a *compilation test* for this exact function:
+    fn foo(x: &u8) {
+        thread::scope(|s| {
+            s.spawn(|| drop(x));
+        });
+    }
+    // let's also run it for good measure
+    let x = 42_u8;
+    foo(&x);
+}