SIG_ERR           289 lib/common/mainloop.c         return SIG_ERR;
SIG_ERR           300 lib/common/mainloop.c         return SIG_ERR;
SIG_ERR           363 lib/common/mainloop.c     if (crm_signal_handler(sig, mainloop_signal_handler) == SIG_ERR) {
SIG_ERR           388 lib/common/mainloop.c     } else if (crm_signal_handler(sig, NULL) == SIG_ERR) {
SIG_ERR          1449 lib/common/mainloop.c     return crm_signal_handler(sig, dispatch) != SIG_ERR;
SIG_ERR          1428 tools/crm_mon.c             ncurses_winch_handler == SIG_IGN || ncurses_winch_handler == SIG_ERR)