1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/generator/reborrow-mut-upvar.rs b/tests/ui/generator/reborrow-mut-upvar.rs
new file mode 100644
index 000000000..dbd9e24e2
--- /dev/null
+++ b/tests/ui/generator/reborrow-mut-upvar.rs
@@ -0,0 +1,16 @@
+// run-pass
+
+#![feature(generators)]
+
+fn _run(bar: &mut i32) {
+    || { //~ WARN unused generator that must be used
+        {
+            let _baz = &*bar;
+            yield;
+        }
+
+        *bar = 2;
+    };
+}
+
+fn main() {}