+ int
+ main ()
+ {
+ static struct timespec ts_sleep;
+ static struct timespec ts_remaining;
+ static struct sigaction act;
+ if (! nanosleep)
+ return 2;
+ act.sa_handler = check_for_SIGALRM;
+ sigemptyset (&act.sa_mask);
+ sigaction (SIGALRM, &act, NULL);
+ ts_sleep.tv_sec = 0;
+ ts_sleep.tv_nsec = 1;
+ alarm (1);
+ if (nanosleep (&ts_sleep, NULL) != 0)
+ return 3;
+ ts_sleep.tv_sec = TYPE_MAXIMUM (time_t);
+ ts_sleep.tv_nsec = 999999999;
+ alarm (1);
+ if (nanosleep (&ts_sleep, &ts_remaining) != -1)
+ return 4;
+ if (errno != EINTR)
+ return 5;
+ if (ts_remaining.tv_sec <= TYPE_MAXIMUM (time_t) - 10)
+ return 6;
+ return 0;
+ }]])],
+ [gl_cv_func_nanosleep=yes],
+ [case $? in dnl (
+ 4|5|6) gl_cv_func_nanosleep='no (mishandles large arguments)';; dnl (
+ *) gl_cv_func_nanosleep=no;;
+ esac],
+ [gl_cv_func_nanosleep=cross-compiling])
+ ])
+ if test "$gl_cv_func_nanosleep" = yes; then
+ REPLACE_NANOSLEEP=0
+ else
+ REPLACE_NANOSLEEP=1
+ if test "$gl_cv_func_nanosleep" = 'no (mishandles large arguments)'; then
+ AC_DEFINE([HAVE_BUG_BIG_NANOSLEEP], [1],
+ [Define to 1 if nanosleep mishandles large arguments.])
+ else
+ for ac_lib in $LIBSOCKET; do
+ case " $LIB_NANOSLEEP " in
+ *" $ac_lib "*) ;;
+ *) LIB_NANOSLEEP="$LIB_NANOSLEEP $ac_lib";;
+ esac
+ done
+ fi
+ fi
+ else
+ HAVE_NANOSLEEP=0
+ fi