/* recvfrom.c --- wrappers for Windows recvfrom function
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008-2010 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
int
rpl_recvfrom (int fd, void *buf, int len, int flags, struct sockaddr *from,
- int *fromlen)
+ int *fromlen)
{
- int frombufsize = *fromlen;
+ int frombufsize = (from != NULL ? *fromlen : 0);
SOCKET sock = FD_TO_SOCKET (fd);
int r = recvfrom (sock, buf, len, flags, from, fromlen);
/* Winsock recvfrom() only returns a valid 'from' when the socket is
connectionless. POSIX gives a valid 'from' for all types of sockets. */
- else if (*fromlen == frombufsize)
+ else if (from != NULL && *fromlen == frombufsize)
rpl_getpeername (fd, from, fromlen);
return r;