sigsetops (3), sigvec (3), sigwait (3), strsignal (3), swapcontext (3), sysv_signal (3), core
readdir() setenv() setgrent() setkey() setpwent() setutxent() strerror() strsignal() [Added in POSIX.1-2008] strtok() system() [Added
NAME signal-safety