[socket] Fix bad parameter passed to select (#4390)

[mono.git] / mono / utils / mono-poll.c

diff --git a/mono/utils/mono-poll.c b/mono/utils/mono-poll.c
index 8900bb23572c0abb6a994afd1e68e968565a8d77..d81b4eb9168f050626d4afd5ab31628fd5d061fa 100755 (executable)
--- a/mono/utils/mono-poll.c
+++ b/mono/utils/mono-poll.c
@@ -1,3 +1,5 @@
+#include <config.h>
+
 #ifdef HOST_WIN32
 /* For select */
 #include <winsock2.h>
@@ -58,7 +60,7 @@ mono_poll (mono_pollfd *ufds, unsigned int nfds, int timeout)
                        return 1;
                }
 #else
-               if (fd > FD_SETSIZE) {
+               if (fd >= FD_SETSIZE) {
                        ufds [i].revents = MONO_POLLNVAL;
                        return 1;
                }