1 files changed, 13 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-6153.rs b/tests/ui/issues/issue-6153.rs
new file mode 100644
index 00000000000..25f026f214b
--- /dev/null
+++ b/tests/ui/issues/issue-6153.rs
@@ -0,0 +1,13 @@
+// run-pass
+
+
+fn swap<F>(f: F) -> Vec<isize> where F: FnOnce(Vec<isize>) -> Vec<isize> {
+    let x = vec![1, 2, 3];
+    f(x)
+}
+
+pub fn main() {
+    let v = swap(|mut x| { x.push(4); x });
+    let w = swap(|mut x| { x.push(4); x });
+    assert_eq!(v, w);
+}