1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/self/self-re-assign.rs b/tests/ui/self/self-re-assign.rs
new file mode 100644
index 000000000..9595ebf96
--- /dev/null
+++ b/tests/ui/self/self-re-assign.rs
@@ -0,0 +1,17 @@
+// run-pass
+// Ensure assigning an owned or managed variable to itself works. In particular,
+// that we do not glue_drop before we glue_take (#3290).
+
+#![allow(dead_code)]
+
+use std::rc::Rc;
+
+pub fn main() {
+   let mut x: Box<_> = Box::new(3);
+   x = x;
+   assert_eq!(*x, 3);
+
+   let mut x = Rc::new(3);
+   x = x;
+   assert_eq!(*x, 3);
+}