gcc/testsuite/gcc.dg/tree-ssa/alias-33.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O -fdump-tree-fre1-details" } */
   3
   4 int j;
   5 int main ()
   6 {
   7   int i = 1;
   8   int **p;
   9   j = 0;
  10   p = __builtin_malloc (sizeof (int *));
  11   *p = &i;
  12   p = __builtin_realloc (p, 2 * sizeof (int *));
  13   **p = 0;
  14   if (i != 0)
  15     __builtin_abort ();
  16   return j;
  17 }
  18
  19 /* { dg-final { scan-tree-dump "Replaced j with 0" "fre1" } } */
  20 /* { dg-final { cleanup-tree-dump "fre1" } } */