1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-copy-closure.rs b/src/test/ui/regions/regions-copy-closure.rs
new file mode 100644
index 000000000..436400797
--- /dev/null
+++ b/src/test/ui/regions/regions-copy-closure.rs
@@ -0,0 +1,21 @@
+// run-pass
+#![allow(non_camel_case_types)]
+
+struct closure_box<'a> {
+    cl: Box<dyn FnMut() + 'a>,
+}
+
+fn box_it<'a>(x: Box<dyn FnMut() + 'a>) -> closure_box<'a> {
+    closure_box {cl: x}
+}
+
+pub fn main() {
+    let mut i = 3;
+    assert_eq!(i, 3);
+    {
+        let cl = || i += 1;
+        let mut cl_box = box_it(Box::new(cl));
+        (cl_box.cl)();
+    }
+    assert_eq!(i, 4);
+}