There is a bug in sendto in cygwin-1.3.16 which can cause an uninitialized value to be returned.
--- fhandler_socket.cc.orig Mon Nov 25 23:15:37 2002 +++ fhandler_socket.cc Mon Nov 25 23:16:32 2002 @@ -862,9 +862,9 @@ DWORD ret; if (!winsock2_active) - res = ::sendto (get_socket (), (const char *) ptr, len, - flags & MSG_WINMASK, - (to ? (const struct sockaddr *) &sin : NULL), tolen); + res = ret = ::sendto (get_socket (), (const char *) ptr, len, + flags & MSG_WINMASK, + (to ? (const struct sockaddr *) &sin : NULL), tolen); else { WSABUF wsabuf = { len, (char *) ptr }; /Mikael -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/