printf("\n\nCOM_ERR tests:\n");
com_err("whoami", FOO_ERR, (char *)NULL);
com_err("whoami", FOO_ERR, " -- message goes %s", "here");
- com_err("whoami", 0, (char *)0);
+ com_err("whoami", 0, NULL);
com_err("whoami", 0, "error number %d\n", 0);
return 0;