1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/last-use-in-cap-clause.rs b/src/test/ui/last-use-in-cap-clause.rs
new file mode 100644
index 000000000..98d434632
--- /dev/null
+++ b/src/test/ui/last-use-in-cap-clause.rs
@@ -0,0 +1,17 @@
+// run-pass
+
+#![allow(dead_code)]
+// Make sure #1399 stays fixed
+
+struct A { a: Box<isize> }
+
+fn foo() -> Box<dyn FnMut() -> isize + 'static> {
+    let k: Box<_> = Box::new(22);
+    let _u = A {a: k.clone()};
+    let result  = || 22;
+    Box::new(result)
+}
+
+pub fn main() {
+    assert_eq!(foo()(), 22);
+}