1 files changed, 9 insertions, 0 deletions
diff --git a/tests/ui/borrowck/issue-33819.rs b/tests/ui/borrowck/issue-33819.rs
new file mode 100644
index 000000000..fff5015cd
--- /dev/null
+++ b/tests/ui/borrowck/issue-33819.rs
@@ -0,0 +1,9 @@
+fn main() {
+    let mut op = Some(2);
+    match op {
+        Some(ref v) => { let a = &mut v; },
+        //~^ ERROR cannot borrow `v` as mutable, as it is not declared as mutable
+        //~| HELP try removing `&mut` here
+        None => {},
+    }
+}