gcc/testsuite/gcc.c-torture/compile/920428-6.c

   1 typedef struct x
   2 {
   3   struct x *type;
   4   struct x *chain;
   5   struct x *value;
   6 } *tree;
   7
   8 int
   9 func (new, old)
  10      register tree new, old;
  11 {
  12   if (old->type == 0 || new->type == 0)
  13     {
  14       register tree t = old->type;
  15       if (t == 0)
  16         t = new->type;
  17       for (; t; t = t->chain )
  18         if (t->value)
  19           return 1;
  20     }
  21   return 0;
  22 }