diff --git a/test/CodeGenCXX/expr.cpp b/test/CodeGenCXX/expr.cpp
index 26bda05..775169d 100644
--- a/test/CodeGenCXX/expr.cpp
+++ b/test/CodeGenCXX/expr.cpp
@@ -18,3 +18,13 @@
 // PR7892
 int test3(const char*);
 int test3g = test3(__PRETTY_FUNCTION__);
+
+
+// PR7889
+struct test4A {
+  int j : 2;
+};
+int test4() {
+  test4A a;
+  (a.j = 2) = 3;
+}