gcc/testsuite/gcc.dg/tree-ssa/alias-16.c

   1 /* { dg-do run } */
   2
   3 extern void abort (void);
   4
   5 struct X {
   6     int a;
   7     struct Y {
   8         int b[4];
   9     } b;
  10     struct Y c;
  11 } m;
  12
  13 struct X n;
  14
  15 foo (int i)
  16 {
  17   struct Y *p = (i > 10) ? &m.b : &n.c;
  18   p->b[2] = 10;
  19   m.b.b[3] = 6;
  20   n.c.b[2] = 3;
  21   return p->b[2] + n.c.b[2] + m.b.b[3];
  22 }
  23
  24 main()
  25 {
  26   if (foo (3) != 12)
  27     abort ();
  28   return 0;
  29 }