--- /dev/null
+#include <stdlib.h>
+
+struct a
+{
+ int a1[5];
+ union
+ {
+ int b1[5];
+ struct
+ {
+ int c1;
+ int c2;
+ } b2[4];
+ } a2[8];
+};
+
+int i1 = 5;
+int i2 = 2;
+int i3 = 6;
+int i4 = 0;
+
+int
+main ()
+{
+ volatile struct a *k = calloc (1, sizeof (struct a));
+ k->a2[i1].b1[i2] = k->a2[i3].b2[i4].c2;
+ free ((void *) k);
+ return 0;
+}