1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/nll/issue-27868.rs b/src/test/ui/nll/issue-27868.rs
new file mode 100644
index 000000000..e436b22db
--- /dev/null
+++ b/src/test/ui/nll/issue-27868.rs
@@ -0,0 +1,28 @@
+// Regression test for issue #27868
+
+use std::ops::AddAssign;
+
+struct MyVec<T>(Vec<T>);
+
+impl <T> Drop for MyVec<T> {
+    fn drop(&mut self) {
+        println!("Being dropped.");
+    }
+}
+
+impl<T> AddAssign<T> for MyVec<T> {
+    fn add_assign(&mut self, _elem: T) {
+        println!("In add_assign.");
+    }
+}
+
+fn main() {
+    let mut vec = MyVec(vec![0]);
+    let mut vecvec = vec![vec];
+
+    vecvec[0] += {
+        vecvec = vec![];
+        //~^ ERROR cannot assign to `vecvec` because it is borrowed [E0506]
+        0
+    };
+}