title: abort system call behaviour
body: <p>I have  a parent process which is handling the signal <code>SIGCHLD</code>.
  If I call <code>abort()</code> in the child process , the <code>SIGABRT</code> signal is raised in the child process.</p>
  
  <p>My question is , at the time of child process core dumping , <code>SIGCHLD</code> signal will be sent to parent process or not ?</p>