_EDC_SIG_DFLT

To be compliant with the SUSV3 standard, when _EDC_SIG_DFLT is set to 1, the default action of the following signals is abnormal termination of the process with no message output: SIGALRM, SIGHUP, SIGINT, SIGPIPE, SIGPOLL, SIGPROF, SIGSYS, SIGTERM, SIGUSR1, SIGUSR2, and SIGVTALRM.