-#if !defined(USE_POLL)
-#if FD_SETSIZE < (MAXCONNECTIONS + 4)
-/*
- * Sanity check
- *
- * All operating systems work when MAXCONNECTIONS <= 252.
- * Most operating systems work when MAXCONNECTIONS <= 1020 and FD_SETSIZE is
- * updated correctly in the system headers (on BSD systems our sys.h has
- * defined FD_SETSIZE to MAXCONNECTIONS+4 before including the system's headers
- * but sys/types.h might have abruptly redefined it so the check is still
- * done), you might already need to recompile your kernel.
- * For larger FD_SETSIZE your mileage may vary (kernel patches may be needed).
- * The check is _NOT_ done if we will not use FD_SETS at all (USE_POLL)
- */
-#error "FD_SETSIZE is too small or MAXCONNECTIONS too large."
-#endif
-#endif
-