1 files changed, 10 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-21291.rs b/tests/ui/issues/issue-21291.rs
new file mode 100644
index 000000000..b351e22d8
--- /dev/null
+++ b/tests/ui/issues/issue-21291.rs
@@ -0,0 +1,10 @@
+// run-pass
+// ignore-emscripten no threads support
+
+// Regression test for unwrapping the result of `join`, issue #21291
+
+use std::thread;
+
+fn main() {
+    thread::spawn(|| {}).join().unwrap()
+}