_SC_ARG_MAX
arg_max = sysconf(_SC_ARG_MAX);
if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)
case _SC_ARG_MAX:
arg_max = sysconf(_SC_ARG_MAX);
if ((argmax = sysconf(_SC_ARG_MAX)) == -1) {
if ((arg_max = sysconf(_SC_ARG_MAX)) == -1)