test/ud2.c

   1 void g (void)
   2 {
   3   char *x;
   4   char **y;
   5
   6   f1(&x);
   7   printf("%s\n", x);
   8
   9   f1(y); /* 1. Unallocated storage y passed as out parameter: y */
  10   printf("%s\n", *y);
  11 }
  12
  13 void h (void)
  14 {
  15   int z;
  16   char *x;
  17   char **y;
  18
  19   f3 (&z); /* okay! */
  20   f2 (&x); /* 2. Value &x used before definition, */
  21   printf ("%s\n", x);
  22
  23   f2 (y);  /* 3. Variable y used before definition */
  24 }