1 files changed, 9 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-3290.rs b/src/test/ui/issues/issue-3290.rs
new file mode 100644
index 000000000..840c7ff83
--- /dev/null
+++ b/src/test/ui/issues/issue-3290.rs
@@ -0,0 +1,9 @@
+// run-pass
+#![feature(box_syntax)]
+#![allow(dead_code)]
+
+pub fn main() {
+   let mut x: Box<_> = box 3;
+   x = x;
+   assert_eq!(*x, 3);
+}