Comment 6 for bug 1507812

static int init_server_components()
{
...
  if (gtid_mode >= 1 && opt_bootstrap)
  {
    sql_print_warning("Bootstrap mode disables GTIDs. Bootstrap mode "
    "should only be used by mysql_install_db which initializes the MySQL "
    "data directory and creates system tables.");
    gtid_mode= 0;
  }
...
}