1 files changed, 10 insertions, 0 deletions
diff --git a/tests/ui/closures/closure-immutable-outer-variable.rs.fixed b/tests/ui/closures/closure-immutable-outer-variable.rs.fixed
new file mode 100644
index 000000000..5c6358beb
--- /dev/null
+++ b/tests/ui/closures/closure-immutable-outer-variable.rs.fixed
@@ -0,0 +1,10 @@
+// Point at the captured immutable outer variable
+
+fn foo(mut f: Box<FnMut()>) {
+    f();
+}
+
+fn main() {
+    let mut y = true;
+    foo(Box::new(move || y = false) as Box<_>); //~ ERROR cannot assign to captured outer variable
+}