1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/ui/threads-sendsync/sendfn-is-a-block.rs b/src/test/ui/threads-sendsync/sendfn-is-a-block.rs
new file mode 100644
index 000000000..62807d894
--- /dev/null
+++ b/src/test/ui/threads-sendsync/sendfn-is-a-block.rs
@@ -0,0 +1,11 @@
+// run-pass
+
+
+fn test<F>(f: F) -> usize where F: FnOnce(usize) -> usize {
+    return f(22);
+}
+
+pub fn main() {
+    let y = test(|x| 4 * x);
+    assert_eq!(y, 88);
+}