+--------------------+-----------------+
|  POSIX signal      | default action  |
+--------------------+-----------------+
|  SIGHUP            |  terminate      |
|  SIGINT            |    terminate    |
|  SIGQUIT           |    coredump     |
|  SIGILL            |    coredump     |
|  SIGTRAP           |    coredump     |
|  SIGABRT/SIGIOT    |    coredump     |
|  SIGBUS            |    coredump     |
|  SIGFPE            |    coredump     |
|  SIGKILL           |    terminate(+) |
|  SIGUSR1           |    terminate    |
|  SIGSEGV           |    coredump     |
|  SIGUSR2           |    terminate    |
|  SIGPIPE           |    terminate    |
|  SIGALRM           |    terminate    |
|  SIGTERM           |    terminate    |
|  SIGCHLD           |    ignore       |
|  SIGCONT           |    ignore(*)    |
|  SIGSTOP           |    stop(*)(+)   |
|  SIGTSTP           |    stop(*)      |
|  SIGTTIN           |    stop(*)      |
|  SIGTTOU           |    stop(*)      |
|  SIGURG            |    ignore       |
|  SIGXCPU           |    coredump     |
|  SIGXFSZ           |    coredump     |
|  SIGVTALRM         |    terminate    |
|  SIGPROF           |    terminate    |
|  SIGPOLL/SIGIO     |    terminate    |
|  SIGSYS/SIGUNUSED  |    coredump     |
|  SIGSTKFLT         |    terminate    |
|  SIGWINCH          |    ignore       |
|  SIGPWR            |    terminate    |
|  SIGRTMIN-SIGRTMAX |    terminate    |
+--------------------+-----------------+
|  non-POSIX signal  |  default action |
+--------------------+-----------------+
|  SIGEMT            |  coredump       |
+--------------------+-----------------+