91 	sigset_t *const libc_set = tail_alloc(sizeof(sigset_t));  in main()  local
92 	sigemptyset(libc_set);  in main()
93 	sigaddset(libc_set, SIGUSR1);  in main()
94 	if (sigprocmask(SIG_SETMASK, libc_set, NULL))  in main()
117 	sigemptyset(libc_set);  in main()
118 	sigaddset(libc_set, SIGUSR2);  in main()
119 	memcpy(k_set, libc_set, set_size);  in main()
126 	sigaddset(libc_set, SIGHUP);  in main()
127 	memcpy(k_set, libc_set, set_size);  in main()
134 	sigaddset(libc_set, SIGINT);  in main()
135 	memcpy(k_set, libc_set, set_size);  in main()
142 	memset(libc_set, -1, sizeof(*libc_set));  in main()
143 	sigdelset(libc_set, SIGUSR1);  in main()
144 	memcpy(k_set, libc_set, set_size);  in main()