coccinelle/free_and_replace.cocci

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 @@
   3 expression p, q;
   4 @@
   5 - free(p);
   6 - p = q;
   7 - q = NULL;
   8 - return 0;
   9 + return free_and_replace(p, q);
  10 @@
  11 expression p, q;
  12 @@
  13 - free(p);
  14 - p = q;
  15 - q = NULL;
  16 + free_and_replace(p, q);