diff --git a/test/CFrontend/2002-09-18-UnionProblem.c b/test/CFrontend/2002-09-18-UnionProblem.c
new file mode 100644
index 00000000000..e914e4f5b25
--- /dev/null
+++ b/test/CFrontend/2002-09-18-UnionProblem.c
@@ -0,0 +1,24 @@
+
+struct DWstruct {
+  char high, low;
+};
+
+typedef union {
+  struct DWstruct s;
+  short ll;
+} DWunion;
+
+short __udivmodhi4 (char n1, char bm) {
+  DWunion rr;
+
+  if (bm == 0)
+    {
+      rr.s.high = n1;
+    }
+  else
+    {
+      rr.s.high = bm;
+    }
+
+  return rr.ll;
+}