diff -urpN proxychains-3.1/proxychains/core.c proxychains-3.1.fixed/proxychains/core.c
--- proxychains-3.1/proxychains/core.c  2006-03-15 18:16:59.000000000 +0200
+++ proxychains-3.1.fixed/proxychains/core.c    2011-07-15 12:23:20.607010439 +0300
@@ -717,9 +717,18 @@ int proxy_getaddrinfo(const char *node,
    (*res)->ai_canonname = addr_name;
    (*res)->ai_next = NULL;
    (*res)->ai_family = sockaddr_space->sa_family = AF_INET;
-   (*res)->ai_socktype = hints->ai_socktype;
-   (*res)->ai_flags = hints->ai_flags;
-   (*res)->ai_protocol = hints->ai_protocol;
+   if (hints != NULL)
+   {
+       (*res)->ai_socktype = hints->ai_socktype;
+       (*res)->ai_flags = hints->ai_flags;
+       (*res)->ai_protocol = hints->ai_protocol;
+   }
+   else
+   {
+       (*res)->ai_socktype = 0;
+       (*res)->ai_flags = 0;
+       (*res)->ai_protocol = 0;
+   }
    (*res)->ai_addrlen = sizeof(*sockaddr_space);
    goto out;
 err3:
diff -urpN proxychains-3.1/proxychains/libproxychains.c proxychains-3.1.fixed/proxychains/libproxychains.c
--- proxychains-3.1/proxychains/libproxychains.c    2006-03-15 18:16:59.000000000 +0200
+++ proxychains-3.1.fixed/proxychains/libproxychains.c  2011-07-15 12:48:05.677008133 +0300
@@ -282,8 +282,11 @@ void freeaddrinfo(struct addrinfo *res)
    if(!proxychains_resolver)
        true_freeaddrinfo(res);
    else {
-       free(res->ai_addr);
-       free(res);
+       if (res != NULL)
+       {
+           free(res->ai_addr);
+           free(res);
+       }
    }
    return;
 }