1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/generator/pattern-borrow.rs b/tests/ui/generator/pattern-borrow.rs
new file mode 100644
index 000000000..d19363708
--- /dev/null
+++ b/tests/ui/generator/pattern-borrow.rs
@@ -0,0 +1,17 @@
+#![feature(generators)]
+
+enum Test { A(i32), B, }
+
+fn main() { }
+
+fn fun(test: Test) {
+    move || {
+        if let Test::A(ref _a) = test { //~ ERROR borrow may still be in use when generator yields
+            yield ();
+            _a.use_ref();
+        }
+    };
+}
+
+trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { }  }
+impl<T> Fake for T { }